Academic literature on the topic 'Dynamic Load Allowance'

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Journal articles on the topic "Dynamic Load Allowance"

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Laman, J. A., J. S. Pechar, and T. E. Boothby. "Dynamic Load Allowance for Through-Truss Bridges." Journal of Bridge Engineering 4, no. 4 (1999): 231–41. http://dx.doi.org/10.1061/(asce)1084-0702(1999)4:4(231).

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Prachasaree, Woraphot, Attapon Sangkaew, Suchart Limkatanyu, and Hota V. S. GangaRao. "Parametric Study on Dynamic Response of Fiber Reinforced Polymer Composite Bridges." International Journal of Polymer Science 2015 (2015): 1–13. http://dx.doi.org/10.1155/2015/565301.

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Because of high strength and stiffness to low self-weight ratio and ease of field installation, fiber reinforced polymer (FRP) composite materials are gaining popularity as the materials of choice to replace deteriorated concrete bridge decks. FRP bridge deck systems with lower damping compared to conventional bridge decks can lead to higher amplitudes of vibration causing dynamically active bridge deck leading serviceability problems. The FRP bridge models with different bridge configurations and loading patterns were simulated using finite element method. The dynamic response results under v
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Gao, Qingfei, Biao Wu, Renzhi Wang, Jiaqiang Zhang, Binqiang Guo, and Jun Li. "Investigation of the Dynamic Performance of a Large-Span Suspension Bridge Influenced by Scouring Based on Vehicle-Bridge Coupled Vibration." Shock and Vibration 2020 (November 11, 2020): 1–12. http://dx.doi.org/10.1155/2020/6656247.

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To study the damage of bridge pile foundations caused by scouring, two damage mechanisms of scouring are proposed in this paper. Considering the vehicle-bridge coupled vibration in terms of two aspects of the scouring depth and erosion depth, the vertical and transversal dynamic characteristics and dynamic responses of the bridge are studied under different cases for the most sensitive vehicle speed. The dynamic characteristics include the 1st and 2nd vibration modes of the vertical and transversal directions of the bridge. The dynamic responses include the vertical and transversal dynamic loa
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Panesar, Daman K., and F. Michael Bartlett. "Load and resistance data for precast stringer highway bridges." Canadian Journal of Civil Engineering 33, no. 11 (2006): 1368–78. http://dx.doi.org/10.1139/l06-082.

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Statistical parameters for the load effects and resistances of precast "type G" stringer bridges erected in Alberta since the late 1950s are presented to assist practicing engineers assessing similar bridges using the mean load method. The load effect data include unit weight data for normal weight and two lightweight concretes; traffic volumes, gross vehicle weights, and single, tandem, and tridem axle weights observed on primary, secondary, and local roads; and dynamic load allowances for shear and bending moment on short span bridges. Extreme annual traffic loads are derived. The resistance
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Zhou, Yongjun, Zhongguo John Ma, Yu Zhao, Xiongwei Shi, and Shuanhai He. "Improved definition of dynamic load allowance factor for highway bridges." Structural Engineering and Mechanics 54, no. 3 (2015): 561–77. http://dx.doi.org/10.12989/sem.2015.54.3.561.

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Holden, Korin, Chris Pantelides, and Lawrence Reaveley. "Maximum Dynamic-Load Allowance of Bridge with GFRP-Reinforced Concrete Deck." Journal of Performance of Constructed Facilities 30, no. 3 (2016): 04015060. http://dx.doi.org/10.1061/(asce)cf.1943-5509.0000808.

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Wells, A., H. W. Shenton, K. N. Manahiloh, and G. Wenczel. "Dynamic Load Allowance Provisions for Box Culverts with Low Fill Depth." Transportation Infrastructure Geotechnology 5, no. 1 (2017): 42–58. http://dx.doi.org/10.1007/s40515-017-0046-6.

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Liu, Chenguang, Zonglin Wang, and Qingfei Gao. "Nonstructural Influence Factors of Dynamic Load Allowance for Concrete Beam Bridges." KSCE Journal of Civil Engineering 23, no. 5 (2019): 2293–302. http://dx.doi.org/10.1007/s12205-019-1428-9.

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Bigelow, Jake, Brent Phares, Terry Wipf, Mike Ritter, and Doug Wood. "Dynamic Field Performance of Glued Laminated Timber Bridges." Transportation Research Record: Journal of the Transportation Research Board 1928, no. 1 (2005): 154–64. http://dx.doi.org/10.1177/0361198105192800117.

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To use and develop timber structures in transportation better, the U.S. government implemented several national programs starting in the early 1990s to address the needs of the timber industry. One need was to investigate the dynamic field performance of timber bridges in relation to vehicular loading. The AASHTO load and resistance factor design specifications recommend a dynamic load allowance of 0.165 for timber bridges. To investigate this codified value, research was needed to determine the dynamic characteristics of timber bridges and to study their dynamic performance. To obtain dynamic
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ZHANG, JING, and WEI-XIN REN. "A DYNAMIC STIFFNESS METHOD FOR DETERMINING NATURAL FREQUENCIES OF BEAMS WITH ALLOWANCE FOR DEAD LOAD." International Journal of Structural Stability and Dynamics 09, no. 04 (2009): 777–90. http://dx.doi.org/10.1142/s0219455409003284.

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The initial stresses due to dead loads have an influence on the natural frequencies of bridges. In this paper, a dynamic stiffness-based method is proposed for determining the natural frequencies of uniform elastic beams with allowance for the dead load effect. Firstly, the governing differential equation including the effect of dead loads is derived. Next, the analytical dynamic stiffness matrix is obtained by applying the displacements and forces boundary conditions at the ends of the beam. In order to solve analytically the governing differential equation, the modified dynamic stiffness mat
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Dissertations / Theses on the topic "Dynamic Load Allowance"

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Prince, Robert T. "Evaluation of Field Tests Performed on an Aluminum Deck Bridge." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/36719.

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Studies have shown that over 30 percent of the bridges in the United States are structurally deficient, and/or over 50 years old. The majority of the highway bridges have reinforced concrete decks supported on steel or concrete girders. Over the years, weathering and deicing chemicals have caused spalling of the concrete surrounding the reinforcing steel, deteriorating many bridges to levels that often result in closure. Repairing or reconstructing the reinforced concrete deck to meet current design specifications is often not possible or feasible, and at times seems illogical due to the pos
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Harris, Devin K. "Lateral Load Distribution and Deck Design Recommendations for the Sandwich Plate System (SPS) in Bridge Applications." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/29582.

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The deterioration of the nation's civil infrastructure has prompted the investigation of numerous solutions to offset the problem. Some of these solutions have come in the form of innovative materials for new construction, whereas others have considered rehabilitation techniques for repairing existing infrastructure. A relatively new system that appears capable of encompassing both of these solution methodologies is the Sandwich Plate System (SPS), a composite bridge deck system that can be used in both new construction or for rehabilitation applications. SPS consists of steel face plates bond
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Kassner, Bernard Leonard. "Long-term In-service Evaluation of Two Bridges Designed with Fiber-Reinforced Polymer Girders." Thesis, Virginia Tech, 2004. http://hdl.handle.net/10919/10122.

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A group of researchers, engineers, and government transportation officials have teamed up to design two bridges with simply-supported FRP composite structural beams. The Toms Creek Bridge, located in Blacksburg, Virginia, has been in service for six years. Meanwhile, the Route 601 Bridge, located in Sugar Grove, Virginia, has been in service for two years. Researchers have conducted load tests at both bridges to determine if their performance has changed during their respective service lives. The key design parameters under consideration are: deflection, wheel load distribution, and dynamic l
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Collins, William Norfleet. "Live Load Testing and Analysis of the Southbound Span of U.S. Route 15 over Interstate-66." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/34364.

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As aging bridges around the United States begin to near the end of their service lives, more funding must be allocated for their rehabilitation or replacement. The Federal Highway Administrationâ s (FHWA) Long-Term Bridge Performance (LTBP) Program has been developed to help bridge stakeholders make the best decisions concerning the allocation of these funds. This is done through the use of high quality data obtained through numerous testing processes. As part of the LTBP Pilot Program, researchers have performed live load tests on the U.S. Route 15 Southbound bridge over Interstate-66. The m
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Neely, William Douglas. "Evaluation of the In-Servic Performance of the Tom's Creek Bridge." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/33249.

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The Tom's Creek Bridge is a small-scale demonstration project involving the use of fiber-reinforced polymer (FRP) composite girders as the main load carrying members. The project is intended to serve two purposes. First, by calculating bridge design parameters such as the dynamic load allowance, transverse wheel load distribution and deflections under service loading, the Tom's Creek Bridge will aid in modifying current AASHTO bridge design standards for use with FRP composite materials. Second, by evaluating the FRP girders after being exposed to service conditions, the project will begin
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Restrepo, Edgar Salom. "Determination of AASHTO Bridge Design Parameters through Field Evaluation of the Rt. 601 Bridge: A Bridge Utilizing Strongwell 36 in. Fiber-Reinforced Polymer Double Web Beams as the Main Load Carrying Members." Thesis, Virginia Tech, 2002. http://hdl.handle.net/10919/36182.

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The Route 601 Bridge in Sugar Grove, Virginia spans 39 ft over Dickey Creek. The Bridge is the first to use the Strongwell 36 in. fiber reinforced polymer (FRP) double web beam (DWB) in its superstructure. Replacement of the old bridge began in June 2001, and construction of the new bridge was completed in October 2001. The bridge was field tested in October 2001 and June 2002. This thesis details the field evaluation of the Rt. 601 Bridge. Using mid span deflection and strain data from the October 2001 and June 2002 field tests, the primary goal of this research was to determine the fo
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Book chapters on the topic "Dynamic Load Allowance"

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Guz, Aleksander N. "Problem 7. Brittle Fracture of Materials with Cracks Under Action of Dynamic Loads (with Allowance for Contact Interaction of the Crack Edges)." In Eight Non-Classical Problems of Fracture Mechanics. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77501-8_9.

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"Reliability-based calibration of dynamic load allowance of bridge by numerical simulation." In Advances in Bridge Maintenance, Safety Management, and Life-Cycle Performance, Set of Book & CD-ROM. CRC Press, 2015. http://dx.doi.org/10.1201/b18175-214.

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Deng, L., C. Cai, and M. Barbato. "Dynamic load allowance for capacity rating of prestressed concrete girder bridges based on reliability studies." In Bridge Maintenance, Safety, Management, Resilience and Sustainability. CRC Press, 2012. http://dx.doi.org/10.1201/b12352-340.

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Meish, Vladimyr, and Yuliia Meish. "THE WAVE PROCESSES IN THREE-LAYER SHELLS OF ROTATIONWITH TAKING INTO ACCOUNT THE DISCRETE FILLER AT NON-STATIONARY LOADS." In Integration of traditional and innovation processes of development of modern science. Publishing House “Baltija Publishing”, 2020. http://dx.doi.org/10.30525/978-9934-26-021-6-36.

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Thin-walled shell structures in the form of plates and shells of various shapes have a high bearing capacity, lightness, and relative ease of manufacture. Three-layer shell elements, which consist of two bearing layers and a filler, which ensures their joint work, are widely used in mechanical engineering, industrial and civil construction, aviation and space technology, shipbuilding. When calculating the strength of three-layer shell structures with a discrete filler under dynamic loads, it becomes necessary to determine the stress-strain state both in the area of a sharp change in the geometry of the structure and at a considerable distance from the heterogeneity. The complexity of the processes that arise in this case necessitates the use of modern numerical methods for solving dynamic problems of the behavior of three-layer shell elements with a discrete filler. In this regard, the determination of the stress-strain state of three-layer shells with a discrete filler under non-stationary loads and the development of an effective numerical method for solving problems of this class is an urgent problem in the mechanics of a deformable solid. On the basis of the theory of threelayered shells with applying the hypotheses for each layer the nonstationary vibrations threelayered shells of revolution with allowance of discrete fillers are investigated. Hamilton-Ostrogradskyy variational principle for dynamical processes is used for deduction of the motion equations. An efficient numerical method for solution of problems on nonstationary behaviour of threelayers shells of revolution with allowance of discrete fillers are used. The wide diapason of geometrical, and physico-mechanical parameters of nonhomohenes threelayered structure are considerated. On the basis of the offered model nonstationary problems of the forced nonlinear vibrations of threelayered shells of revolution of various structure are solved and analysed. The basis of the developed numerical method for the study of nonstationary oscillations is the application of explicit finite-difference schemes to solve the initial differential equations in partial derivatives. The theory is based on the relations of the theory of three-layer shells of revolution taking into account the discreteness of the filler, which are based on the hypotheses of the geometrically nonlinear theory of shells and rods of the Timoshenko type.
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Conference papers on the topic "Dynamic Load Allowance"

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Kadivar, Mehdi, Kalehiwot Nega Manahiloh, Victor N. Kaliakin, and Harry W. Shenton. "Assessment of Dynamic Load Allowance for Buried Culverts." In IFCEE 2018. American Society of Civil Engineers, 2018. http://dx.doi.org/10.1061/9780784481608.018.

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Everitt, Anthony, Gordon Wight, and Marc-Andre Dagenais. "Dynamic Load Allowance for Military Tracked and Wheeled Vehicles: Experimental Results." In 2019 International Conference on Military Technologies (ICMT). IEEE, 2019. http://dx.doi.org/10.1109/miltechs.2019.8870083.

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Guimarães, Miguel, and Alberto Teixeira. "Coura and Valença Bridges on Minho Railway line – old structures, updated performance." In IABSE Symposium, Guimarães 2019: Towards a Resilient Built Environment Risk and Asset Management. International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/guimaraes.2019.0455.

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<p>The pleasant Minho railway single lane line section from Caminha to Valença crosses the Minho river at Valença, through a very interesting and beautiful steel bridge. At Caminha it crosses the river Coura, by an also attractive steel bridge. Both are more than a century old and were refurbished and upgraded in a recent past and had before severe speed restrictions and load limitations:</p><ol><li> <p>Coura bridge: This 1879 iron bridge is a 3 span 164m lower deck continuous closed lattice girder, for a live load of only 4t/m without dynamic effects allowance. I
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Heidari, Amir, and Amin Nikoobin. "Maximum allowable dynamic load of flexible manipulators with imposing residual vibration constraint." In 2007 IEEE International Conference on Robotics and biomimetics (ROBIO). IEEE, 2007. http://dx.doi.org/10.1109/robio.2007.4522379.

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Morscheck, Luke A., and John J. Roller. "Stress Testing of a New North American Passenger Locomotive Truck Frame in Accordance With International Union of Railways (UIC) Code." In 2013 Joint Rail Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/jrc2013-2426.

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MotivePower Incorporated (MPI) a Wabtec company and CTLGroup have completed stress testing of a new two-axle passenger locomotive truck (bogie) frame for use in North America. Testing was performed in accordance with International Union of Railways (UIC) Code 615-4 – Bogie Frame Structural Strength Tests [1]. Static testing was performed to simulate exceptional, main in-service and particular in-service loads. A three-phase dynamic fatigue test of 10 million cycles was also performed. Factors for quasi-static, dynamic and track twist (warp) loads were increased from those recommended by the UI
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Wang, Bo, Yung-Sup Shin, and Eric Norris. "Hull Deformation Effect on Membrane-Type LNG Containment Systems." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54903.

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The objective of this study is to investigate the relationship between the maximum allowable hull deformation, which includes global elongation and local deflection, and the capacity of the CCS in membrane-type LNG vessels. The LNG CCS mainly consists of the primary barrier (e.g. a corrugated membrane for GTT MK III system and an invar membrane for GTT NO 96 system) and the insulation panel which is attached to the inner hull through mastics or couplers. The excessive hull elongation due to dynamic wave loads may cause fatigue damage of the primary barrier. Thus, the maximum allowable hull elo
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Wang, Guozhi, and Zhouyi Liu. "Reconstruction and Reinforcement of Pile Driving Barges." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79433.

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With the increasing demand of petroleum exploitation as well as the construction of bridges and ports, the size of pile driving barges becomes much greater with longer piles. Considering of the economy, many old pile driving barges face to the reconstruction through the strengthening and heightening. In determining the reconstruction scheme, the traditional method for loads estimation is the combination of static load with dynamic coefficient, but it is perhaps not reasonable. The reconstruction design of a pile driving barge is described in this paper. Various of loads were considered includi
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Yiu, F., N. Liu, J. Wang, and D. Litton. "Dynamic Analysis of Offshore Pile Launch." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79216.

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Successful installation of offshore piles is often challenged by the constraints of cost, technical feasibility, availability of suitable installation vessels and the environment. A practical installation procedure is defined as one that utilizes the capacity of available equipment to operate in a wide allowable environmental window. To find such procedures there is a continuing need for research, use of new technologies, and the adoption of new ideas. This paper presents a feasibility study for side launching piles from a conventional cargo barge. Sophisticated nonlinear time domain dynamic s
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Han, Zenghu, Vikram N. Shah, Jeries Abou-Hanna, and Yung Y. Liu. "Dynamic Structural Analysis of the 9516 Transport Package." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25047.

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This paper presents the structural dynamic analysis of the 9516 package subjected to two hypothetical accidents in sequence: (1) the 30-ft drop test and (2) the puncture test. The analysis is performed with the general-purpose finite element analysis computer code, ABAQUS, using explicit integration. The 9516 package consists of a containment vessel placed inside a cask mounted inside a steel cage, which acts as the impact limiter and the personnel shield. The cask has a bolted closure that provides the confinement to the containment vessel. The closure bolts initially were modeled with one-di
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Greenwell, Wesley, and Ardalan Vahidi. "Experiments in Predictive Coordination of a Fuel Cell/Ultracapacitor Hybrid." In ASME 2008 Dynamic Systems and Control Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/dscc2008-2190.

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A rule-based and a model predictive power management strategy are evaluated in experiments for power management of a fuel cell/ultracapacitor hybrid. The two degrees of freedom provided by use of two dc/dc convertors enable independent low-level control of the DC BUS voltage and the current split between the fuel cell and ultracapacitor. The high-level control objectives are to respond to rapid variations in load while minimizing damaging fluctuations in fuel cell current and maintaining the ultracapacitor charge (or voltage) within allowable bounds. Experiments show that both strategies can b
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