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Journal articles on the topic 'Platform bridges'
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1
Vidya, K., and A. Aarthy. "Mobility Platform for Physically Challenged People using Wireless Sensor Network." International Journal of Engineering & Technology 7, no. 2.24 (2018): 255. http://dx.doi.org/10.14419/ijet.v7i2.24.12059.
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The Primary objective of Automatic Railway Bridge System is to help the physically Challenged Passenger to move from one Platform to another. Crossing the railway track inside the railway station is very difficult. But it is quite difficult to the handicapped and aged persons to cross the railway track without the help of other. The proposed system uses the train time for opening and closing of bridges. This is done by wireless communication. Each train is connected with RF transceiver, which will send a data of arrival before it reaches the station platform. If the train leaves the platform, the automatically the mobile platform will be bridged between two platforms to build a path between them. This project is designed with arduino microcontroller. The arduino microcontroller gives the input from the RSSI and give command to the motor to run in order to change in the position of open and close the mobility rostrum
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Yuan, JC, XL Liu, Y. Ding, XJ Wang, ZB Cao, and JH Zhou. "Rapid Intelligent Risk Assessment of Bridges under Typhoon Disasters." Journal of Physics: Conference Series 2476, no. 1 (2023): 012030. http://dx.doi.org/10.1088/1742-6596/2476/1/012030.
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Abstract In order to improve the risk early-warning performance of highway bridges caused by typhoon disasters, a fast and intelligent risk assessment model for highway bridges is proposed in this paper. A three-level accident possibility index system is established in which the top-level index is the possibility of bridge accident, the second-level indices comprise the accident causing factor, the surrounding environment factor, and the accident bearing body, and the third-level indices are selected from the disaster conditions and the bridge’s own technical conditions. With the rapid risk assessment model of highway bridges under typhoon disasters, the intelligent risk assessment software platform is developed. In the case analysis, the automatic and intelligent risk assessment of highway bridges in Ningbo under Typhoon “Lekima” on August 10, 2019, was realized.
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Olmi, Palombi, Durazzani, et al. "Integrating Thermographic Images in A User-Friendly Platform to Support Inspection of Railway Bridges." Proceedings 27, no. 1 (2019): 12. http://dx.doi.org/10.3390/proceedings2019027012.
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preventive inspection of railway bridges is a key step for an effective maintenance program. The TOSCA-FI project has developed an integrated ICT platform for easy access to a wide set of data, obtained with several imaging techniques (high definition photography, photogrammetry, 3D scanning, fluorescence LIDAR and thermography) and integrated into a 3D model of the bridge. The aim is to provide a tool to support the inspection of railway bridges, often based exclusively on the visual inspection. In this paper, we present selected results obtained on masonry bridges by using thermography and their integration in the TOSCA-FI platform.
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Patil, Vyankatesh. "Automatic Platform Bridge in Railways." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 05 (2024): 1–5. http://dx.doi.org/10.55041/ijsrem34184.
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The primary aim of the Automatic Railway Bridge System is to assist physically challenged passengers in moving from one platform to another. Crossing the railway track within the station premises poses significant challenges, especially for the handicapped and elderly individuals, who often require assistance from others. In this study, the agents utilize various resources such as train characteristics, driving regulations, and information pertaining to other trains to formulate their action plan. Many elderly individuals suffer from ailments such as leg cramps, walking difficulties, vein issues, and chronic foot pains, making it imperative to address this issue. To tackle this problem, we propose a project involving the implementation of a horizontally adjusted platform connecting both station platforms. This innovation eliminates the need for both adults and children to climb bridges, thereby saving time for passengers and ensuring smoother operations for all. Keywords- Railway Systems, Platform Bridge, IR SENSOR (E18-D80NK Infrared Proximity Sensor), DC Motor.
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Siavash, Cheraghaliganji* Afshin Aayatmadar. "COMPARISON OF SEISMIC RESPONSE OF NON-SEISMICALLY AND SEISMICALLY DESIGNED MULTI SPAN CONTINUOUS CONCRETE I-GIRDER BRIDGES." Global Journal of Engineering Science and Research Management 4, no. 6 (2017): 28–41. https://doi.org/10.5281/zenodo.805439.
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Multi Span Continuous Concrete I-Girder Bridges are categorized among the most vulnerable bridge classes. Seismic response assessment for these highway bridges are essential for highway transportation networks exposed to seismic hazards. This study focuses on developing and comparing seismic response of different bridge components for seismically and non-seismically designed bridges that are common in this region. The primary differences between seismically and non-seismically designed bridges are the column details. Detailed three-dimensional (3-D) nonlinear analytical models, which account for the nonlinear behavior of the column, girders, and abutments are developed with the use of OpenSees platform. The seismic behavior of the bridge components are obtained and compared for the case of non-seismically and seismically designed bridges. The results explicitly show that the seismic behavior of the bridge components are significantly affected by seismic detailing of the reinforced concrete column. However, different components are not equally affected by this parameter.
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Komol, Md Mostafizur Rahman, Md Samiul Islam Sagar, Naeem Mohammad, et al. "Simulation Study on an ICT-Based Maritime Management and Safety Framework for Movable Bridges." Applied Sciences 11, no. 16 (2021): 7198. http://dx.doi.org/10.3390/app11167198.
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Maritime management is a crucial concern for movable bridge safety. Irregular management of water vehicles near movable bridges may lead to collision among ships and bridge infrastructures, causing massive losses of life and property. The paper presents a theoretical framework and simulation of an intelligent water vehicle management system for movable bridges corresponding to vehicle traffic responses. The water regime around the bridge is considered in virtually separated domains to estimate the desired safety actions based on the position of the approaching ships. An emergency clash avoidance control system is represented to prevent ship-infrastructure collision and ensure transportation safety. In addition, a simulation platform is developed specifically adaptable for movable bridge maritime and dynamic traffic management. The proposed theory is experimented using the simulation platform for different ship speeds and bridge-vehicle traffic volumes. Based on analyzing the velocity profile of approaching ships at different incidents, the bridge is found incapable of evacuating vehicles and unable to open promptly in case of speeding ships and high traffic density of vehicles on the bridge. Computational results show that the emergency control system is effective in reducing ship speed and prevent certain collisions. Lastly, the transportation policy for the newly proposed maritime management system is validated by real-world implementation in movable bridges across the world.
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Xu, Baishun, Chuanzhi Sun, Shuai Song, Xuening Zhang, Bin Zhao, and Wenhao Zhang. "Comparative Study on the Seismic Vulnerability of Continuous Bridges with Steel–Concrete Composite Girder and Reinforced Concrete Girder." Buildings 14, no. 6 (2024): 1768. http://dx.doi.org/10.3390/buildings14061768.
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For medium- and small-span bridges, the weight of the superstructure in steel–concrete composite girder bridges is lighter than that of a reinforced concrete girder bridge. However, it is still uncertain whether steel–concrete composite girder bridges exhibit superior seismic performance compared to reinforced concrete girder bridges. This study quantitatively compared the seismic performance of the two types of bridges. Using the theory of probabilistic seismic demand analysis, the seismic vulnerability curves of bridges were derived. To conduct seismic demand analysis for probabilistic analysis on the OpenSEES platform, bridge samples were generated using the Latin hypercube stratified sampling method, which considers the uncertainties associated with the two types of bridges. The vulnerability curves of the piers, bearings, abutments, and the system of the two bridges were established using probabilistic analysis of the time history analyses. The results showed that the seismic vulnerabilities of components and the overall system of the steel–concrete composite girder bridge were both lower than those of the reinforced concrete girder bridge. When the peak ground acceleration (PGA) of the ground motion was 0.3 g, the moderate and serious damage probabilities of the piers in the steel–concrete composite bridge were only 54.61% and 60.89%, respectively, of those of the reinforced concrete bridge. Consequently, replacing the upper reinforced concrete girders with steel–concrete composite girders can significantly improve the seismic performance of a large number of existing bridges.
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GHANI, MUHAMMAD USMAN, MUHAMMAD HAMZA, RAHAT ULLAH, MUHAMMAD TOQUEER, DANISH BASHEER, and MUHAMMAD JAMSHED ABBASS. "Historical bridges in Pakistan." Inżynieria i Budownictwo LXXIX, no. 7-8 (2023): 339–45. http://dx.doi.org/10.5604/01.3001.0053.7982.
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Bridges play a very important role in the country's economy, as they allow easy transport of goods and passengers through difficult-to-travel areas. They also give a general picture of technological advancement in the land construction sector in the country. With the advancement of civil engineering technology, several materials and technologies have found their way into bridge construction, where bricks, concrete, and steel have been used and different structural configurations are used as needed. These configurations include slab, beam, arch, truss, suspension and cable-stayed bridges. It is important to pay attention to significant bridges in a country and consistently collect available statistical and historical data. This can be useful for future authors and researchers to easily navigate this data and use it for further research, as it is easily accessible consistently on one platform. This paper aims to provide such a platform by listing the most important bridges to Pakistan's growing economy. Several bridges in Pakistan are presented, their history, technical specifications and historical significance. The bridges are shown in chronological order to provide a clear and understandable narrative. Pakistan has been observed to have some remarkable bridges statistically and historically due to the development of the civil engineering sector during pre-independence and post-independence in 1947
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Rehm, Sven-Volker, Shane McLoughlin, and Giovanni Maccani. "Experimentation Platforms as Bridges to Urban Sustainability." Smart Cities 4, no. 2 (2021): 569–87. http://dx.doi.org/10.3390/smartcities4020030.
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Despite immense efforts to realize diverse visions of the ‘smart city,’ municipalities still face manifold uncertainties of how governance and the tools of governance can best support public and regional value creation for achieving urban sustainability. To this end, Urban Living Labs have become a known enabling mechanism. In this paper, we extend the lab idea and formulate the concept of Urban Experimentation Platform that focuses on developing urban innovation ecosystems for urban sustainability. We use action design research and participant observation across multiple case studies enacting Urban Experimentation Platforms in order to investigate how the tie-in between governance and the local lab’s innovation process unfolds. Our analysis distills three facets that are instrumental in institutionalizing these platforms as resilient organizational models. With the help of the case studies, we illustrate the three facets, concerning issues of urban ecosystem governance, empowering co-creation, and qualifying local innovation. The facets reinforce the roles of digital instruments and digital capabilities for effective urban governance and platform management. We draw some conclusions for future research and formulate policy recommendations for implementing and operating Urban Experimentation Platforms.
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Zhanga, Yongjun, Qiangqiang Maa, Tianhui Mab, Shengrong Xiec, and Jun Peng. "CONSTRUCTION SAFETY INSPECTION PLATFORM OF HIGH-SPEED RAILWAY SUPER LARGE SWIVEL BRIDGE BASED ON NUMERICAL SIMULATION." Engineering Heritage Journal 7, no. 2 (2023): 108–12. http://dx.doi.org/10.26480/gwk.02.2023.108.112.
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In recent years, when building bridges across existing railways, in order to reduce the interference to the railway operation line during the construction process, parallel railways are often used to cast bridges and then rotate them. In this paper, combined with the engineering example of Zhaochuan Super Swivel Bridge on Beijing-Zhanghai High-speed Railway, the key and difficult points of the swivel bridge during construction are monitored, and compared with the computer simulation data, the static friction coefficient, dynamic friction coefficient and friction couple distance of the swivel system are obtained. Model each component of the bridge body, establish a safety monitoring and early warning method, system, storage medium, and early warning platform, and visually display the safety degree of components at different stages and locations by color discrimination.
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Sanchez-Cuevas, Pedro, Pablo Ramon-Soria, Begoña Arrue, Anibal Ollero, and Guillermo Heredia. "Robotic System for Inspection by Contact of Bridge Beams Using UAVs." Sensors 19, no. 2 (2019): 305. http://dx.doi.org/10.3390/s19020305.
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This paper presents a robotic system using Unmanned Aerial Vehicles (UAVs) for bridge-inspection tasks that require physical contact between the aerial platform and the bridge surfaces, such as beam-deflection analysis or measuring crack depth with an ultrasonic sensor. The proposed system takes advantage of the aerodynamic ceiling effect that arises when the multirotor gets close to the bridge surface. Moreover, this paper describes how a UAV can be used as a sensor that is able to fly and touch the bridge to take measurements during an inspection by contact. A practical application of the system involving the measurement of a bridge’s beam deflection using a laser tracking station is also presented. In order to validate our system, experiments on two different bridges involving the measurement of the deflection of their beams are shown.
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Podworna, M., and M. Klasztorny. "Vertical vibrations of composite bridge/track structure/high-speed train systems. Part 1: Series-of-types of steel-concrete bridges." Bulletin of the Polish Academy of Sciences: Technical Sciences 62, no. 1 (2014): 165–79. http://dx.doi.org/10.2478/bpasts-2014-0018.
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Abstract A new series-of-types of single-span simply-supported railway composite (steel-concrete) bridges, with a symmetric platform, has been designed according to the Polish bridge standards. The designed bridges/viaducts are located on the main railways of the classification coefficient k = +2. A ballasted track structure adapted to high operating speeds has also been designed. The ultimate limit states and the limit states corresponding to the bridges undertaken are collected and discussed. The bridges have been designed in accordance with contemporary art engineering, with geometric and material optimization, avoiding overdesign. A new methodology of numerical modelling and simulation of dynamic processes in composite bridge/ballasted track structure/high speed train systems, developed in Part 2 and Part 3, has been applied and implemented in a problem-oriented computer programme. A new approach to predicting forced resonances in those systems is formulated and tested numerically. It has been proved that in the case of typical structural solutions of bridges and ballasted track structures, it is necessary to introduce certain limitations for operating speeds of trains
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Floridia, Andrea, Davide Messina, Dario Panarelli, Antonino Recupero, Pier Paolo Rossi, and Nino Spinella. "Experimental Application of the Italian Bridge Guidelines to a Stock of Prestressed Concrete Bridges." Infrastructures 9, no. 11 (2024): 196. http://dx.doi.org/10.3390/infrastructures9110196.
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This study applies the first three levels of analysis outlined in the recent Italian Bridge Guidelines to a stock of prestressed concrete bridges located along the highways connecting the cities of Palermo, Messina and Catania in Sicily, south of Italy. The examined levels of analysis include census, visual inspection and determination of the structural–foundational and seismic Classes of Attention of bridges and viaducts. Data of the census and visual inspection activities were gathered using a custom-made web application. The details, the methodologies and all the features implemented in the web platform were illustrated and discussed. Furthermore, the collected data were described and critically analyzed, offering insights into the strength and limitations of each of the three examined levels of analysis of the Italian Bridge Guidelines. Finally, based on the detected defects and their numerousness with respect to the total number of assessed bridges, the authors proposed a straightforward and practical methodology for prioritizing any subsequent repairing intervention on specific groups of bridges.
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Gomez, Jose A., Ali I. Ozdagli, and Fernando Moreu. "Reference-free dynamic displacements of railroad bridges using low-cost sensors." Journal of Intelligent Material Systems and Structures 30, no. 9 (2017): 1291–305. http://dx.doi.org/10.1177/1045389x17721375.
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Displacements of railroad bridges under service loads are important parameters in assessing bridge conditions and risk of train derailment, according to railroad bridge managers. Measuring bridge responses in the field is often expensive and challenging due to the high costs of sensing equipment. Consequently, railroad bridge managers typically rent or subcontract field measurements to others or choose not to collect dynamic data in the field and make visual inspections. This article studies the use of a low-cost data acquisition platform to measure reference-free dynamic displacements of railroad bridges by combining low-cost microcontrollers and accelerometers. Researchers used off-the-shelf systems to measure accelerations and reconstructed reference-free displacements from several railroad bridge crossing events by running trains with different levels of serviceability in the laboratory. The results obtained from the proposed low-cost sensors were compared with those of commercial sensing equipment. The results show that low-cost sensors and commercial sensing systems have comparable accuracy. The results of this study show that the proposed platform estimates reference-free displacements with a peak error between 20% and 30% and a root mean square error between 10% and 20%, which is similar to commercial structural health monitoring systems. The proposed low-cost system is approximately 300 times less expensive than the commercial sensing equipment. The ultimate goal of this research is to increase the intelligent assessment of bridges by training owners and inspectors to collect dynamic data of their interest with their own resources.
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Luo, Xiao Qun, Zhong Quan Wang, and Jie Wu. "Integrated CAD System for Bridges Based on BrIM." Advanced Materials Research 189-193 (February 2011): 102–6. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.102.
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The concept of BrIM (Bridge Information Modeling) is proposed and the technical features of BrIM are briefly described. A bridge CAD system based on BrIM concept is developed under the graphic platform of AutoCAD using ObjectARX. Data interface between 3D solid geometric database and each stage of bridge lifecycle is introduced. The essence of BrIM is realized that all informations including geometric data and non-geometric data are stored in the only knowledge database and all informations of bridges in different stages, such as design, construction and service, are obtained in the only database.
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Gong, Tian Hao, and Yun Long Yao. "Effect of pier bearing construction on nearby high-speed rail line bridges." Vibroengineering Procedia 55 (September 27, 2024): 118–24. http://dx.doi.org/10.21595/vp.2024.24145.
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In order to analyze the impact of the new pier bearing platform construction on the bridge section adjacent to the high-speed railway line, a new pier bearing platform project adjacent to the high-speed railway line in the soft soil area of the Yangtze River Delta is taken as the background of the project, and the finite element software Plaxis 3D is used to study the impact of the pier bearing platform construction on the bridge section adjacent to the high-speed railway line, and to analyze the effect of distance on the horizontal displacement and settlement of the bridge foundation soil body. The neighboring high-speed rail line bridge is displaced horizontally toward the foundation, with the maximum horizontal displacement of 1.5 mm and the maximum settlement of 5.5 mm; the existing pier bearing platforms are also displaced in the same direction, with the maximum horizontal displacement of 2.7 mm and the maximum settlement of 5.4 mm, and the pier bearing platforms in the middle are affected the most.
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Wang, Baitian, Yudong Jia, Hongjuan Zhao, Simeng Wang, Zhengchuang Jin, and Jinfeng Yang. "Research on the Dynamic Response of a Continuous Steel Box Girder Bridge Based on the ANSYS Platform." Sustainability 14, no. 17 (2022): 10638. http://dx.doi.org/10.3390/su141710638.
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Under the action of various dynamic loads, bridges will experience large deflections and stress. When the situation is difficult, it will affect the regular use of the bridge and even cause it to collapse suddenly. This article generated a sample of road surface irregularities based on the Chinese national standard. An ANSYS model was used to create the vehicle–bridge coupling model. In order to meet the actual engineering calculations, an essential but valuable analytical approach is presented here. The node coupling method established the time-varying vehicle axle coupling system. The moving tire force was applied to the axle coupling system. The ANSYS parametric design language was adopted to realize the process of the vehicle approach and exit of the bridge. Combined with the actual data of dynamic and static load experiments, the model’s accuracy was verified. The influence of different vehicle driving speeds, road irregularities, vehicle driving position, and vehicle driving state are analyzed in this paper. The vehicle speed had no significant influence on the displacement time-history and the force of the middle wheel of the vehicle at a specific driving position. The pavement grade significantly influenced the bridge’s displacement time-history and acceleration spectrum.
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Liu, Wenshuo, Qiong Luo, Gonglian Dai, and Xin Tang. "Experimental and Numerical Study on Dynamic Response of High-Pier Ballastless Continuous Beam Bridge in Mountainous Area." Applied Sciences 15, no. 8 (2025): 4341. https://doi.org/10.3390/app15084341.
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The dynamic performance of a ballastless track on bridges affects the vibration performance of the vehicle–bridge coupling system, which, in turn, will affect safety, the smoothness of operating trains, and passenger comfort. However, in the existing literature, few studies focus on the coupled vibration response analysis of large-span continuous beam bridges for high-speed railways, especially high-pier bridges. Dynamic response tests with multiple measurement points installed on the rail, concrete slab, and bridge deck are conducted. This study investigates the dynamic characteristics of bridges with high piers under train loads. A dynamic system is built by the co-simulation platform of SIMPACK v9 and ANSYS v2022, consisting of several models, a coupling mechanism, etc. The vibration response of a train passing through the bridge at 300 km/h is analyzed, and the influence of operating speed on the motivation performance of the coupled system is further studied. The results indicate that the simulation results are validated against experimental data, showing good agreement; the train–track–continuous beam bridge coupling system meets the specification limits and has some margins for further optimization with an operating speed of 300 km/h. The refined model of train–rail–bridge coupling vibration established in this paper provides theoretical guidance for the design and application of high-speed railways.
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王, 升堂. "Design of Prestressed Bearing Platform for Swivel Bridges." Hans Journal of Civil Engineering 12, no. 07 (2023): 999–1008. http://dx.doi.org/10.12677/hjce.2023.127114.
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Vimonsatit, Vanissorn, and Koon Wan Wong. "Bridge Management—Determination of Allowable Cartage Loads for the Movement of Heavy Vehicles with a Platform Trailer on Concrete Bridges to Satisfy MCFT-Based Section Shear Adequacy." Infrastructures 9, no. 12 (2024): 236. https://doi.org/10.3390/infrastructures9120236.
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Load rating, using nominated rating vehicles by individual road authorities, is described in the Australian standard for bridge assessment, AS 5100.7, for all load effects, including shear. The load rating can be used to indicate the strength condition of bridges and to determine load posting for weak bridges. Thus, the information is useful for managing vehicle movements. However, for road authorities to accurately assess requested movements for a heavy vehicle with a prime mover and a platform trailer, additional information is required. This paper describes an approach employing a nonlinear search technique to determine the maximum allowable cartage loads of vehicles for various number of trailer axles up to that of a nominated load rating vehicle to ensure shear adequacy. A vehicle–bridge system has been analyzed considering a two-span bridge girder subject to a nominated rating vehicle. The calculated scaling factors for trailer loads corresponding to the total number of axles in the vehicle are presented. A platform table can then be created to assess the requested permits. The approach ensures full compliance with Modified Compression Field Theory (MCFT) as the section shear strength used for load rating is consistent with the load effects of the rating vehicle for the vehicle–bridge system under assessment.
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Salave, Harshwardhan. "IoT-Based Bridge Monitoring System." International Journal for Research in Applied Science and Engineering Technology 13, no. 4 (2025): 4442–45. https://doi.org/10.22214/ijraset.2025.69099.
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Bridges are vital components of a country's transportation infrastructure, facilitating the movement of people and goods. However, due to factors like aging, overloading, environmental influences, and natural disasters, bridges are subject to structural degradation over time. Traditional methods of bridge inspection are often labor- intensive, time-consuming, and prone to human error. To address these challenges, this project proposes an IoT- based Bridge Monitoring System that provides realtime, remote, and continuous structural health monitoring using a network of smart sensors and microcontrollers. The system integrates various sensors such as vibration sensors, strain gauges, tilt sensors, temperature and humidity sensors, and displacement sensors to continuously monitor critical structural parameters. These sensors are interfaced with an IoT-enabled microcontroller which collects the sensor data and transmits it to a cloud-based platform for storage, analysis, and visualization. Platforms such as ThingSpeak, Blynk, or Firebase are employed to display real-time data and trends, allowing engineers and authorities to assess the condition of the bridge remotely. In addition, the system incorporates threshold-based alerts. When any parameter exceeds the predefined safety limit, the system automatically triggers notifications via SMS, email, or app-based alerts. This ensures that potential structural issues can be identified early, reducing the risk of catastrophic failures and enabling timely maintenance interventions
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Nagar, Dr Monika, Adarsh Chauhan, and Mudit Dwivedi. "Replacing Face-to-Face Classes with Collegium: Ed-tech platform (Online Platform)." International Journal for Research in Applied Science and Engineering Technology 12, no. 5 (2024): 251–59. http://dx.doi.org/10.22214/ijraset.2024.61449.
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Abstract: The incorporation of technology has sparked a revolutionary change in the way that students interact with instructional materials in today's quickly changing educational environment. This paradigm shift is demonstrated by the creation of collegium, which bridges the gap between cutting-edge technological solutions and conventional learning approaches. Collegium reimagines the educational experience by utilizing cutting-edge frameworks like ReactJS, NodeJS, ExpressJS, and MongoDB, providing a dynamic platform that overcomes time and space constraints.
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Nie, Y., J. Li, P. Zhou, and G. Liu. "Numerical evaluation of seismic response of corroded bridges." IOP Conference Series: Earth and Environmental Science 1334, no. 1 (2024): 012047. http://dx.doi.org/10.1088/1755-1315/1334/1/012047.
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Abstract Traditional seismic analyses of concrete bridges mainly focus on new bridges, ignoring the effect of durability on the performance, which causes limitations. Research on the seismic performance of corroded bridge piers considering the modal period of the piers is of utmost importance. The corrosion process of steel bars under chloride-ion erosion is simulated based on Faraday’s law, and the time-varying law of the performance degradation of reinforced concrete materials is calculated. Subsequently, a finite-element model of the bridge structure is established using the OpenSees platform. Two seismic waves are selected to analyze the time history within the established finite element model. Considering the influence of the pier modal period, the seismic capacity, and dynamic characteristics of a bridge exposed to a chloride-ion environment are evaluated. This study serves as a robust source of technical support for the comprehensive study of vulnerability analysis, encompassing the assessment of the risks associated with chloride-ion-induced corrosion degradation and seismic hazards.
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Renan Barzilay, Arianne. "The Technologies of Discrimination: How Platforms Cultivate Gender Inequality." Law & Ethics of Human Rights 13, no. 2 (2019): 179–202. http://dx.doi.org/10.1515/lehr-2019-2006.
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Abstract The changes created by platform-facilitated labor are considered fundamental challenges to the future of work. As more data accumulates on gender discrimination in online platforms, this Article explores how inequality is cultivated by platforms in the gig economy. Looking at technological architecture as organizational structure, this essay bridges a gap between three bodies of scholarship that have not yet been in conversation but considering them together is necessary if we are to think about gender equality in platform-facilitated labor. The first concerns data driven discrimination, the second concerns the role of platform affordances and the third concerns organizational policies. These point to the gender inequality regime that platforms may enact. Thus, the Article theoretically contributes to unpacking platforms’ role in perpetuating and institutionalizing gender inequality. Finally, it offers some suggestions on the ways in which law, policy and technology can disrupt the institutionalization of gender inequality in platform-facilitated labor.
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Stefanidou, Sotiria P., Elias A. Paraskevopoulos, Vassilis K. Papanikolaou, and Andreas J. Kappos. "An online platform for bridge-specific fragility analysis of as-built and retrofitted bridges." Bulletin of Earthquake Engineering 20, no. 3 (2022): 1717–37. http://dx.doi.org/10.1007/s10518-021-01299-3.
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Jia, Dai Yong, Lu Yan Sui, and Ming Lai He. "Experimental Study on Mass Transfer Coefficient of Dry Air in Main Cable of Suspension Bridge." Advanced Materials Research 461 (February 2012): 151–54. http://dx.doi.org/10.4028/www.scientific.net/amr.461.151.
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In this study, an experiment platform was built up to determine the key parameter, mass transfer coefficient, of the ventilation and dehumidification process in main cable of suspension bridge. On the basis of experimental studies, an empirical formula of the mass transfer coefficient was obtained, which can greatly contribute to control the content of moisture in the main cable of suspension bridges.
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Prathap Reddy, Kasi Reddy. "DESIGN AND ANALYSIS OF STEEL BRIDGE USING STAAD.Pro." INTERNATIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 09, no. 06 (2025): 1–9. https://doi.org/10.55041/ijsrem49640.
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Abstract – Steel and steel-concrete composite bridges are widely used across the globe due to their combination of aesthetic appeal and efficient structural performance. These bridges not only reflect the vision and inspiration of their designers but also symbolize a nation's development and aspirations for a better future. Compared to traditional reinforced concrete (RC) bridges, steel bridges offer numerous advantages, including a high strength-to-self weight ratio, rapid and flexible construction, ease of modification, repair, and recycling, enhanced durability, and superior architectural adaptability. The high strength-to-self weight ratio reduces dead loads, which is especially beneficial in areas with poor ground conditions, and facilitates easier transportation, handling, and erection of large components—sometimes even allowing entire bridges to be installed in short durations. Steel components can be customized to meet site access limitations, and once in place, steel girders provide a stable platform for further construction activities. The adaptability of steel bridges allows for modifications such as widening to support increased traffic, and structural reinforcements using steel plates or advanced composites can be applied to meet higher load demands. Additionally, steel bridges are recyclable at the end of their service life or when site conditions change. When properly designed, maintained, and protected from corrosion, steel bridges are highly durable and capable of accommodating complex architectural forms that are often unfeasible with traditional RC structures Key Words: Steel bridges, Composite bridge, Durability, Recyclability, Modification and repair.
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Huang, Xiao Min, and Jin Bo Song. "Bridge Safety Quick Test Vehicle Feasibility Development Research." Applied Mechanics and Materials 178-181 (May 2012): 2401–4. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.2401.
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Bridge construction is the national important foundation construction of bridge engineering, is the relationship between society and economy to coordinate development of lifeline engineering. Bridge construction of rapid development, huge capital investment, the economic society of the prominent role, making it to the bridge's safety, durability, more and more attention. Based on the analysis of detection results of existing bridges, bridge on the future work state of speculation, pointed out the possible development trend for the future to provide advice, bridge maintenance. As the bridge reinforcement and reconstruction to provide accurate and comprehensive data. The results of this study, can be formed quickly, economy of bridge health monitoring technology for bridge health security situation in the initial judgement; through the acquisition of the data of bridge health security archives; acquisition project archives data and webGIS docking platform form a" bridge based on webGIS project archives management system " for the future highway bridge maintenance and strengthening of decision making the corresponding reference. The project also has safety, economy, practical, convenient, and many other characteristics suitable for road and Bridge Health census and safety risk assessment.
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Lawal, Omobolaji, Shaik Althaf Veluthedath Shajihan, Kirill Mechitov, and Billie F. Spencer. "Edge Integration of Artificial Intelligence into Wireless Smart Sensor Platforms for Railroad Bridge Impact Detection." Sensors 24, no. 17 (2024): 5633. http://dx.doi.org/10.3390/s24175633.
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Of the 100,000 railroad bridges in the United States, 50% are over 100 years old. Many of these bridges do not meet the minimum vertical clearance standards, making them susceptible to impact from over-height vehicles. The impact can cause structural damage and unwanted disruption to railroad bridge services; rapid notification of the railroad authorities is crucial to ensure that the bridges are safe for continued use and to affect timely repairs. Therefore, researchers have developed approaches to identify these impacts on railroad bridges. Some recent approaches use machine learning to more effectively identify impacts from the sensor data. Typically, the collected sensor data are transmitted to a central location for processing. However, the challenge with this centralized approach is that the transfer of data to a central location can take considerable time, which is undesirable for time-sensitive events, like impact detection, that require a rapid assessment and response to potential damage. To address the challenges posed by the centralized approach, this study develops a framework for edge implementation of machine-learning predictions on wireless smart sensors. Wireless sensors are used because of their ease of installation and lower costs compared to their wired counterparts. The framework is implemented on the Xnode wireless smart sensor platform, thus bringing artificial intelligence models directly to the sensor nodes and eliminating the need to transfer data to a central location for processing. This framework is demonstrated using data obtained from events on a railroad bridge near Chicago; results illustrate the efficacy of the proposed edge computing framework for such time-sensitive structural health monitoring applications.
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Xiong, Qin, and Guanguo Liu. "Response Monitoring and Analysis of Large Temporary Platform of Cross-Sea Bridge Under the Action of High Tidal Range and Strong Wind and Wave." Atmosphere 16, no. 4 (2025): 386. https://doi.org/10.3390/atmos16040386.
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The response of large temporary working platforms for cross-sea bridges under the action of strong wind and waves with large tidal ranges is one of the key issues in offshore engineering. Based on a grand offshore bridge project in Fujian Province of China, on-site monitoring tests were carried out on a temporary working platform. A high-precision and fully automatic monitoring system was adopted to conduct the all-weather and high-frequency monitoring on vibrations, responses, and sea conditions of the platform, enabling us to grasp its structural mechanical characteristic and ensuring the platform safety. The results show that, under the severe sea conditions of typhoons, the stress of the platform structure increases significantly with the increase in the tidal range and reaches its maximum value at the high tide level. The inclination angle changes violently at the high tide level, while the amplitude of inclination angle change is relatively small at the low tide level. The effective value of the platform displacement under the severe sea conditions of typhoon meteorology is much larger than that under normal sea conditions. Compared with the low tide level, the acceleration of the offshore temporary work platform changes more drastically at the high tide level under severe sea conditions. Under severe sea conditions, the tidal level has a significant impact on the frequency corresponding to the peak value of the acceleration power spectrum of the offshore temporary platform.
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Kaewunruen, Sakdirat, Jessada Sresakoolchai, Wentao Ma, and Olisa Phil-Ebosie. "Digital Twin Aided Vulnerability Assessment and Risk-Based Maintenance Planning of Bridge Infrastructures Exposed to Extreme Conditions." Sustainability 13, no. 4 (2021): 2051. http://dx.doi.org/10.3390/su13042051.
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Over the past centuries, millions of bridge infrastructures have been constructed globally. Many of those bridges are ageing and exhibit significant potential risks. Frequent risk-based inspection and maintenance management of highway bridges is particularly essential for public safety. At present, most bridges rely on manual inspection methods for management. The efficiency is extremely low, causing the risk of bridge deterioration and defects to increase day by day, reducing the load-bearing capacity of bridges, and restricting the normal and safe use of them. At present, the applications of digital twins in the construction industry have gained significant momentum and the industry has gradually entered the information age. In order to obtain and share relevant information, engineers and decision makers have adopted digital twins over the entire life cycle of a project, but their applications are still limited to data sharing and visualization. This study has further demonstrated the unprecedented applications of digital twins to sustainability and vulnerability assessments, which can enable the next generation risk-based inspection and maintenance framework. This study adopts the data obtained from a constructor of Zhongcheng Village Bridge in Zhejiang Province, China as a case study. The applications of digital twins to bridge model establishment, information collection and sharing, data processing, inspection and maintenance planning have been highlighted. Then, the integration of “digital twins (or Building Information Modelling, BIM) + bridge risk inspection model” has been established, which will become a more effective information platform for all stakeholders to mitigate risks and uncertainties of exposure to extreme weather conditions over the entire life cycle.
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Ma, Jianke, Jianyi Zhang, Haonan Zhang, and Jing Tian. "Analysis of Bridge Tests on Sandy Overburden Site with Fault Dislocating." Applied Sciences 14, no. 2 (2024): 852. http://dx.doi.org/10.3390/app14020852.
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Performance-based seismic design methods for bridges are advancing, yet limited research has explored the damage mechanisms of bridges subjected to extreme seismic effects, such as those near or across faults. To investigate the damage mechanisms under bedrock dislocation and bridge rupture resistance, providing essential insights for the standardized design and construction of bridges in close proximity to seismic rupture sites, we developed a large-scale device to model bridges in the immediate vicinity of tilted-slip strong seismic rupture sites. This included a synchronous bedrock dislocation loading system. Four sets of typical sandy soil modeling tests were concurrently conducted. The results indicate: (1) The overall shear deformation zone of the foundation and surface uneven deformation primarily concentrate the overburdened soil body along the fault dip. The damaged area under the low-dip reverse fault is lighter on the surface and inside the soil body compared to the high-dip-positive fault. (2) The presence of bridges reduces the width of the main rupture zone and avoidance distance to some extent. However, this reduction is not as significant as anticipated. The damage to the bridge pile foundation along the fault dislocation tendency notably leads to the bending damage of the bridge deck. (3) Input parameters for fracture-resistant bridge design (surface rupture zone location, extent, maximum deformation, etc.) can be deduced from the free site. Within the rupture zone, a “fuse” design can be implemented using simply supported girders. Additionally, combining the “fuse” design with simple supported girders on both sides and utilizing simple support beams for “fuse” design within the rupture zone, along with structural “disconnection”, allows for reinforcing measures on the bridge structure’s foundation platform and pile in the soil body.
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Won, Jongbin, Jong-Woong Park, Junyoung Park, Junsik Shin, and Minyong Park. "Development of a Reference-Free Indirect Bridge Displacement Sensing System." Sensors 21, no. 16 (2021): 5647. http://dx.doi.org/10.3390/s21165647.
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Bridge displacement measurements are important data for assessing the condition of a bridge. Measuring bridge displacement under moving vehicle loads is helpful for rating the load-carrying capacity and evaluating the structural health of a bridge. Displacements are conventionally measured using a linear variable differential transformer (LVDT), which needs stable reference points and thus prohibits the use of this method for measuring displacements for bridges crossing sea channels, large rivers, and highways. This paper proposes a reference-free indirect bridge displacement sensing system using a multichannel sensor board strain and accelerometer with a commercial wireless sensor platform (Xnode). The indirect displacement estimation method is then optimized for measuring the structural displacement. The performance of the developed system was experimentally evaluated on concrete- and steelbox girder bridges. In comparison with the reference LVDT data, the maximum displacement error for the proposed method was 2.17%. The proposed method was successfully applied to the displacement monitoring of a tall bridge (height = 20 m), which was very difficult to monitor using existing systems.
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Zaťko, Maroš. "FOUNDATION OF THE NEW RAILWAY BRIDGE OVER THE NOSICKÁ DAM ON THE RIVER VÁH." Acta Polytechnica CTU Proceedings 29 (January 20, 2021): 35–39. http://dx.doi.org/10.14311/app.2020.29.0035.
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The new railway bridge over the Nosická dam is a part of the complex modernization of the railway corridor from Púchov to Žilina. Our company participated on the project using a wide variety of special foundation techniques on artificial islands for piers P6, P5, P4 and P3 and the pillar foundations. We applied the many years of experience gained by our company through working on projects involving water. Bored piles, as well as vibrated sheet piles, welding and assemblage work have all been carried out from a floating pontoon platform and also there was jet grouting applied to stabilize embankments. At the same time we provided active assistance with temporary floating bridges and platforms for the kind of transfer on water required by our client.
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Huang, Li Hua, Bing Li, Gang Lei, and Dong Dong Shi. "Dynamic and Buffeting Analysis of Suspension Pipeline Bridge." Applied Mechanics and Materials 137 (October 2011): 113–18. http://dx.doi.org/10.4028/www.scientific.net/amm.137.113.
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Suspension aerial crossing structures are broadly applied for supporting petroleum pipelines across special terrain for their optimal structural style and constructional benefit. Due to the general flexibility of the structures, pipeline suspension bridges easily vibrate under the action of random wind forces. One of the typical vibration responses, known as buffeting, is considered to be an important factor for the serviceable safety of suspension bridges. In this paper, the dynamical model of a suspension pipeline bridge is presented and buffeting analysis under the action of wind loads is carried out through the Finite Element Method. It is shown that the frequency spectrum of the suspension pipeline bridge is composed of densely distributed modal frequencies. Low frequencies are mainly focused on horizontal and vertical bending motions of the bridge. Based on the standard harmonic response analysis, the Pseudo-Excitation Method (PEM) is introduced to obtain the buffeting vibration in response to the wind excitation. The correlative formulas of quasi-static buffeting force model are derived, and the buffeting analysis of the bridge using PEM is achieved on the solution platform Ansys.
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Jimenez-Cano, Antonio E., J. Sanchez-Cuevas Pedro, Grau Pedro, Ollero Anibal, and Heredia Guillermo. "Contact-based Bridge Inspection Multirotors: Design, Modelling and Control Considering the Ceiling Effect." IEEE Robotics and Automation Letters 4, no. 4 (2019): 3561–68. https://doi.org/10.1109/LRA.2019.2928206.
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This paper presents the design, modelling and control of a multirotor for inspection of bridges with full contact. The paper analyzes the aerodynamic ceiling effect when the aerial robot approaches the bridge surface from below, including its aerodynamic characterization using Computational Fluid Dynamics (CFD). The proposed multirotor design takes the modelled aerodynamic effects into account, improving the performance of the aerial platform in terms of the stability and position accuracy during the inspection. Nonlinear attitude and position controllers to manage the aerodynamic effects are derived and tested. Last, outdoor experiments in a real bridge inspection task have been used to validate the system, as well as the controller and the aerodynamic characterization. The experiments carried out also include a complete autonomous mission of the aerial platform during a structural assessment application.
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Zhang, Jin, Ke-jian Chen, Neng-pan Ju, Shi-xiong Zheng, Hong-yu Jia, and Da-ping Yuan. "Simulation of the In Situ Spatially Varying Ground Motions and Nonlinear Seismic Response Analysis of the Cable-Stayed Bridge." Shock and Vibration 2020 (March 16, 2020): 1–19. http://dx.doi.org/10.1155/2020/3063402.
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To study the nonlinear seismic behavior and seismic resistance of the long-span cable-stayed bridges subjected to earthquakes, the multidimensional and multisupported artificial ground motions are synthesized first based on the in situ site conditions of the bridge considering the coherent and traveling wave effects. Then, considering the material nonlinearity of the cable-stayed bridge, a 3D finite element model is established based on the OpenSees platform, and the nonlinear seismic response analysis of the bridge is carried out under the synthetic artificial ground motions. The nonlinear seismic response of main bridge components such as piers, towers, bearings, and cables is analyzed, and key conclusions and observations are drawn.
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Deshmukh, Rohit A., Dileepa Jayakody, Alexander Schneider, and Violeta Damjanovic-Behrendt. "Data Spine: A Federated Interoperability Enabler for Heterogeneous IoT Platform Ecosystems." Sensors 21, no. 12 (2021): 4010. http://dx.doi.org/10.3390/s21124010.
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Today, the Internet of Things (IoT) is pervasive and characterized by the rapid growth of IoT platforms across different application domains, enabling a variety of business models and revenue streams. This opens new opportunities for companies to extend their collaborative networks and develop innovative cross-platform and cross-domain applications. However, the heterogeneity of today’s platforms is a major roadblock for mass creation of IoT platform ecosystems, pointing at the current absence of technology enablers for an easy and innovative composition of tools/services from the existing platforms. In this paper, we present the Data Spine, a federated platform enabler that bridges IoT interoperability gaps and enables the creation of an ecosystem of heterogeneous IoT platforms in the manufacturing domain. The Data Spine allows the ecosystem to be extensible to meet the need for incorporating new tools/services and platforms. We present a reference implementation of the Data Spine and a quantitative evaluation to demonstrate adequate performance of the system. The evaluation suggests that the Data Spine provides a multitude of advantages (single sign-on, provision of a low-code development environment to support interoperability and an easy and intuitive creation of cross-platform applications, etc.) over the traditional approach of users joining multiple platforms separately.
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Abdelkader, Eslam Mohammed, Mohamed Marzouk, and Tarek Zayed. "An Invasive Weed Optimization-Based Fuzzy Decision-making Framework for Bridge Intervention Prioritization in Element and Network Levels." International Journal of Information Technology & Decision Making 19, no. 05 (2020): 1189–246. http://dx.doi.org/10.1142/s0219622020500273.
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Recently, the number of deteriorating bridges has drastically increased. Furthermore, tight maintenance budgets are cut down, imposing escalating adverse implications on the safety of bridges. This state of affairs entails the development of decision support systems for the effective management of bridges within the allocated budget. As such, this study introduces an invasive weed optimization-based fuzzy decision-making framework designated for bridge intervention prioritization in both element and network levels. The proposed decision-making platform encompasses three main tiers. The first tier is an optimized fuzzy analytical network process model that aims at computing the weighting vector of the bridge defects, namely corrosion, delamination, cracking, spalling and scaling. In this model, a genetic algorithm optimization model is formulated to improve the consistencies of judgment matrices through circumventing the imprecisions encountered by the classical judgment assignment. The second tier encompasses establishing an integrated bridge deck condition assessment model capitalizing on ground-penetrating radar and inspection reports. In it, the severities of the bridge defects are demonstrated in the form of fuzzy membership functions to address the inherent uncertainties of inspection. Subsequently, a variable-length invasive weed optimization model is structured to automatically calibrate the fuzzy membership functions. The third model is designed for structuring a bridge maintenance decision-making strategy stepping on the integrated condition index. The capabilities of the proposed framework were validated through several levels of comparisons. For instance, it significantly outperformed some of the current condition assessment models. Additionally, it inferred that the thresholds separating the four categories of the integrated bridge deck condition index are 75.651, 67.769 and 60.318.
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Liu, Zhe, and Wang Ping. "The Minimum Longitudinal Horizontal Linear-Stiffness of Piers of Typical High-Speed Railway’s Layout of Turnout and Bridge." Advanced Materials Research 255-260 (May 2011): 3979–83. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.3979.
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The values of longitudinal horizontal linear-stiffness of piers are very important parameters in the design of welded turnout on bridge and they can have a great impact on the force and displacement of the turnout. The layout form of turnout and bridge of welded turnout structure system on high-speed railway bridges are various, so the values of longitudinal horizontal linear-stiffness of piers have to be limited in order to insure the strength and stability of track structure on bridges and at the same time meet the requirement of comparative displacement of beam and rail, turnout proper and frog. To make the value-taking easy in the design process, a finite element model for welded turnout-bridge-platform is established in this paper, which is based on the principle of longitudinal interaction of welded turnout on bridges. Directing at three typical layout forms (No.18 single turnout+4×32m continuous beam, single crossover+6×32m continuous beam and typical throat point+4×32m continuous beam) of welded turnout and bridge on ballast track, a research of the relation between the force and displacement of turnout, and the values of longitudinal horizontal linear-stiffness of piers has been carried out. Based on the comprehensive analysis, minimal values of longitudinal horizontal linear-stiffness of piers which are suitable for these three kinds of layout forms, and the values are 1000,800 and 1600 kN/cm·double-line respectively.
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Costantino, Gianluca, Davide Messina, Antonino Recupero, Pier Paolo Rossi, and Nino Spinella. "A web platform for management and analysis of existing bridges." Procedia Structural Integrity 44 (2023): 1220–27. http://dx.doi.org/10.1016/j.prostr.2023.01.157.
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Zheng, Xiao Yan, Zhuo De Feng, and Yue Xu. "Multi-Tower Effect Analysis of Long-Span Suspension Bridge." Advanced Materials Research 163-167 (December 2010): 1940–44. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.1940.
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As a new bridge system, mechanics behavior study on long-span multi-tower suspension is also very deficiency. The existence of center towers is the origin of performance difference between multi-tower suspension bridge and the traditional one. Based on the Midas/Civil platform, the paper takes a three tower suspension bridge as project reference, establishes finite element models of suspension bridge, which the main span is longer than one kilometer and towers from two to seven. Moreover, the structural property is analyzed separately, which bending moment and displacement effect of girder and tower along with the tower number changes is considered. Natural frequency differences of the model bridges are also paid attention on.
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Xia, Donghong, and Leilei Shi. "Finite Element Analysis of Steel Truss Bridge Structure Based on ANSYS." Journal of Engineering Research and Reports 25, no. 9 (2023): 155–65. http://dx.doi.org/10.9734/jerr/2023/v25i9989.
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With the rapid development of bridge engineering in China, steel truss bridge is widely used with many advantages such as clear force of the structure itself, easy to analyze, and low requirement for foundation. In this paper, the finite element analysis method is adopted to analyze the stress and deformation distribution of steel truss bridge on the platform of ANSYS, a large-scale finite element analysis software. In the static analysis, by applying the vehicle load, the operation mode of the structure is simulated, and the cloud diagrams of its displacement and stress are derived. The dangerous areas of the bridge are identified to provide a reference basis for the design of steel truss bridges.
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Li, Yi, Dapeng Hu, Yangming Xu, Bo Wang, Yongjun Zhou, and Zhonghong Dong. "Study on the mechanical behavior of corroded bridge steel based on the entire process of tensile failure." Materials Research Express 12, no. 1 (2025): 016514. https://doi.org/10.1088/2053-1591/adaac2.
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Abstract The Q345qD bridge steels exposed to severe corrosion environments undergo mechanical property degradation, posing significant safety risks for sea-crossing bridges. Assessing the health of corroded bridge steel structures under load conditions in a manner that avoids causing damage can effectively prevent these intensifying safety hazards. To investigate the impact of corrosion on the mechanical performance of these steels, six sets of standard specimens underwent corrosion ranging from 0 to 896 h. Subsequently, during tensile testing, an image acquisition platform was established to utilize Digital Image Correlation (DIC) techniques for capturing and observing the tensile loading processes of various corroded specimens. Analysis of stress–strain curves and strain field evolution patterns provided insights into the deterioration of mechanical properties of Q345qD bridge steels after corrosion. For corroded bridge steel structures, defects caused by the corrosion pits can still result in localized strain concentration under low load levels. At higher load levels, mass loss due to corrosion or reduced cross-sectional dimensions of load-bearing elements are the primary causes of mechanical performance decline, precipitating overall structural failure. These findings provide some references for routine maintenance of steel structures of cross-sea bridges.
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Pineda, Jhanes, Renato Torres, and Hernán Torres. "Design of a low power consumption wireless sensor network for structural monitoring of bridges." IOP Conference Series: Earth and Environmental Science 1370, no. 1 (2024): 012004. http://dx.doi.org/10.1088/1755-1315/1370/1/012004.
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Abstract This research focuses on designing a wireless sensor network (WSN) using LoRa for monitoring the structural condition of bridges, covering the measurement of variables such as temperature, humidity, vibration and wind speed using sensors such as DHT22, ADXL345 and anemometers. These data are transmitted via LoRa radio access technology to The Things Network (TTN) web platform for processing and storage in the cloud, and then integrated with the Ubidots platform for real-time visualization and analysis. This approach strengthens the field of structural monitoring, laying the groundwork for future applications in the safety of bridges and similar structures.
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Fiandaca, D., V. Denoël, and A. Pirrotta. "A Vehicle Bridge Interaction based approach for the monitoring of bridges through an electric mobile platform." Journal of Physics: Conference Series 2647, no. 18 (2024): 182016. http://dx.doi.org/10.1088/1742-6596/2647/18/182016.
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Abstract The main purpose of the Structural Health Monitoring (SHM) techniques applied in bridges is to monitor many structural parameters to prevent serious damage that may eventually lead to collapse of the entire structure. To date, Operational Modal Analysis (OMA) methods are widely seen as the most reliable SHM technique. These encompass a series of procedures for deriving the modal parameters of a structure using the data acquired under its operating conditions, without recording the external excitation. However, traditional OMA methods generally require expensive setup and time-consuming procedures. With the aim of overcoming these issues, in this paper, an innovative Vehicle-Bridge Interaction (VBI) based approach is investigated as a low-cost monitoring system for the identification of the structural modal parameters. These are obtained from the analysis in the frequency domain of the measured vehicle’s vibration response during several passages on the structure. Therefore, the proposed approach has been adopted in an experimental campaign on a pedestrian bridge in the city of Palermo (Italy). In particular, a very low-cost setup comprising a scaled-up electric vehicle as a mobile platform and few accelerometers has been used.
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Krasoń, Wiesław, and Paweł Sławek. "Design and pre-testing of a mobile modular floating platform with adjustable displacement." Mechanik 90, no. 11 (2017): 1075–80. http://dx.doi.org/10.17814/mechanik.2017.11.185.
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Contemporary emergency crossing systems used by military and crisis service systems are constantly evolving and have to meet many requirements. As a result, modifications to the prototype pontoon bridge segment with adjustable displacement, are proposed. The floating cradle system has been upgraded, additional displacement modules have been supported and a number of solutions including floating equipment and fittings have been added. Modifications and developed constructions allow not only to combine traditional ribbon bridges, but also mobile floating platforms with self propulsion. Assumptions and solutions used in the ferry built from adjustable displacement cassettes, have been focused on. Concept of the ferry in basic configuration and selected variants of strength tests of the shore module of such ferry, is also discussed.
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Krzysztof, Galas. "Drive unit as replacement for the platform." Studies and Materials in Applied Computer Science (ISSN 1689-6300) 12, no. 1 (2020): 10–14. https://doi.org/10.5281/zenodo.4362649.
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he aim of the study is to present an alternative solution to decaying bridges over water tanks. The project is based on the available floating platform solution. This has been matched to the stepper motor, PLC and operator panel. WinProLadder and EasyBuilderPro were used to simulate these connections. The illustrated embodiment also includes the design of the metal casing and the housing to hold for the duration of the absence of use. For this was used Autodesk Fusion 360. The solution can help improve the comfort of stay on waterwater, thanks to easier maintenance than classic solutions.
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Pati, Amey. "StudyNotion - An Online Education Platform." International Journal for Research in Applied Science and Engineering Technology 13, no. 5 (2025): 5885–94. https://doi.org/10.22214/ijraset.2025.71585.
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In StudyNotion is a dynamic and interactive online education platform designed to revolutionize the way learners and educators connect. In today’s fast-paced digital era, the demand for accessible, affordable, and personalized education has grown exponentially. StudyNotion addresses this need by offering a comprehensive e-learning ecosystem that bridges the gap between traditional learning methods and modern educational technologies. StudyNotion’s mission is to democratize education by providing learners from all walks of life with equal opportunities to succeed. It emphasizes inclusivity by offering multilingual support and accessibility features such as subtitles, text-to-speech, and adjustable content formats. By fostering collaboration among students and instructors, the platform creates a thriving community focused on knowledge sharing and lifelong learning.
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Xie, Xiao-Li, Yang Huang, and Xia Qin. "Conceptual design of a new type of single-tower cable-stayed arch bridge and study of its mechanical properties." Advances in Structural Engineering 24, no. 11 (2021): 2500–2511. http://dx.doi.org/10.1177/13694332211001506.
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In order to overcome the apparent characteristics as a flexible structure of a long-span single-tower cable-stayed bridge and the excessive axial force of the main girder, and to exert the advantages of cable-stayed arch cooperative system bridges, this paper proposes a new type of single-tower cable-stayed arch cooperative system bridge. On the premise of the same amount of steel, the new cooperative system bridge can have a greater stiffness than the existing cable-stayed arch cooperative system bridge with the same span. The new system bridge uses the main girder as the rigid tie bar to balance the arches’ thrusts, which enables the main girder to have a smaller axial force and makes the cable-stayed arch cooperative system bridge a thrustless structure. The proposed bridge is assembled by the following method: (a) constructing a cable-stayed bridge with a steel box girder to bear part of the dead load and to act as a construction platform firstly; (b) then installing arch structures and fixing they with the girder to bear the remaining dead load; and, (c) adding web members between the arch ribs and the girder to form a variable-height truss structure with the arch ribs as the upper chords and the girder as a lower chord to bear most of the live load at last. The underlying mechanical principles were explained, and the mechanical properties of the cooperative system bridges were calculated with the finite element method in this paper. The stiffness and axial forces in the girders are analyzed by the finite element method and compared with those of the conventional bridges. The FEA results show that the new cooperative system bridge has the truss structure’s characteristics, which shows apparent advantages of stiffness and much smaller axial force in the main girder.