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Journal articles on the topic 'Prestressing Forces'

Author: Grafiati

Published: 2 June 2025

Last updated: 19 July 2025

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1

Liu, Han Bing, Long Lin Wang, Guo Jin Tan, and Yong Chun Cheng. "Prestress Force Effection on Natural Frequencies of Simply Supported Beams." Applied Mechanics and Materials 275-277 (January 2013): 1172–75. http://dx.doi.org/10.4028/www.scientific.net/amm.275-277.1172.

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Natural frequencies of bridges have certain sensitivity to prestressing force, so the identification of effective prestressing force based on bridges' natural frequencies is a effective method. This paper uses Finite Element Methods to establish the finite element model of prestressed steel beam, and then conducts dynamic simulation analysis of the natural frequencies of the simply-supported bridges on the condition of different prestressing forces and different reinforcement eccentricity distance arrangements. Based on the results, it analyzes the law and the extent of prestressing force's in

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2

Svoboda, Adam, and Ladislav Klusáček. "Results of Short-Term Experiments with Monostrands in Saddles with Small Radii." Solid State Phenomena 272 (February 2018): 147–53. http://dx.doi.org/10.4028/www.scientific.net/ssp.272.147.

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When strengthening existing reinforced concrete structures, we can find many successful applications of post-tensioning. The method of substituted cable ducts is a very convenient especially in the case of strengthening existing reinforced concrete bridges whose load capacity can be increased up to 300 %. Strengthening of structures by post-tensioning is based on active influence of internal forces by prestressing force and radial forces that occur in places of bending the unbonded prestressing tendons. Thus, the forces which acts directly on structure in the anchorage areas and in the locatio

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3

Sari, Nur Purnama, Irwan Irwan, and Hermansyah Hermansyah. "Analisis Kehilangan Gaya Prategang Girder Pada Jembatan Proyek Pembangunan Jalan Tol Tebing Tinggi – Inderapura." Jurnal Ilmiah Teknik Sipil dan Arsitektur (JITAS) 1, no. 2 (2022): 112–17. http://dx.doi.org/10.31289/jitas.v1i2.1456.

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Currently, the construction of toll roads in several regions of Indonesia is being carried out. One of them is the construction of the Tebing Tinggi-Inderapura Toll Road. In this project there are several bridge constructions as a link between roads or as a pedestrian bridge. This bridge uses prestressed beams in which there are steel wires. The steel wire is tensioned by pulling it using a hydraulic jack. When stress is applied, the beam loses its prestressing force. The purpose of this study was to determine the percentage loss of prestressing forces that occurred in the bridge beam. Loss of

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4

Pham, Quang-Quang, Ngoc-Loi Dang, Quoc-Bao Ta, and Jeong-Tae Kim. "Optimal Localization of Smart Aggregate Sensor for Concrete Damage Monitoring in PSC Anchorage Zone." Sensors 21, no. 19 (2021): 6337. http://dx.doi.org/10.3390/s21196337.

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This study investigates the feasibility of smart aggregate (SA) sensors and their optimal locations for impedance-based damage monitoring in prestressed concrete (PSC) anchorage zones. Firstly, numerical stress analyses are performed on the PSC anchorage zone to determine the location of potential damage that is induced by prestressing forces. Secondly, a simplified impedance model is briefly described for the SA sensor in the anchorage. Thirdly, numerical impedance analyses are performed to explore the sensitivities of a few SA sensors in the anchorage zone under the variation of prestressing

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5

Jung, Chi-Young, Tae-Ryeon Woo, and Jong-Han Lee. "Multi-Step Prestressing with Hybrid SMA Wires." Applied Sciences 10, no. 8 (2020): 2842. http://dx.doi.org/10.3390/app10082842.

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Prestressing force is induced in reinforced concrete (RC) structures to improve their load-carrying capacity. Generally, the prestressing strand of an RC structure is tensioned using a hydraulic jack, which decreases its workability. In this study, we evaluate the application of prestressing force by using a shape memory alloy (SMA), as has been actively studied in civil engineering. Experiments were conducted to measure the multi-stepwise prestressing force introduced in a hybrid SMA wire composed of two different types of SMA wires. The experimental parameters were determined based on the co

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6

Yurchenko, Vitalina, and Ivan Peleshko. "Optimal numbers of the redundant members for introducing initial pre-stressing forces into steel bar structures." Strength of Materials and Theory of Structures, no. 106 (May 24, 2021): 68–91. http://dx.doi.org/10.32347/2410-2547.2021.106.68-91.

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The paper considers parametric optimization problems for the steel bar structures formulated as nonlinear programming ones with variable unknown cross-sectional sizes of the structural members, as well as initial prestressing forces introduced into the specified redundant members of the structure. The system of constraints covers load-bearing capacity constraints for all the design sections of the structural members subjected to all the design load combinations at ultimate limit state, as well as displacement constraints for the specified nodes of the bar system, subjected to all design load c

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Stuklis, Arturs, Dmitrijs Serdjuks, and Vadims Goremikins. "Materials Consumption Decrease for Long-Span Prestressed Cable Roof." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 1 (June 16, 2015): 209. http://dx.doi.org/10.17770/etr2015vol1.231.

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<p class="R-AbstractKeywords"><span lang="EN-US">Limited raw materials and energy resources are actual national economy problems which can be solved by the decrease of weight, increase of span and durability of load bearing structures. The largest structural spans were achieved by application of cable structures. The roofs are one of the most widely used in practice type of cable structures. However, increased deformability and necessity of the special methods of stabilizing are significant cable roofs disadvantages. The prestressing of one or several groups of cables is one of the

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8

Perelmuter, Anatolii. "ON THE CHOICE OF PRESTRESSING PARAMETERS." International Journal for Computational Civil and Structural Engineering 17, no. 3 (2021): 114–19. http://dx.doi.org/10.22337/2587-9618-2021-17-3-114-119.

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This paper focuses on the regulation of forces in a statically indeterminate system under the action of many loads. This regulation is realized by prestressing. The paper compares two proposed methods for selecting rational values of the prestressing parameters: maximizing the minimum bearing capacity margin for the elements of the system (1) and equalizing the margins for all elements (2). An illustrative example is provided.

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9

Tian, Zhongchu, Zujun Zhang, Wenping Peng, Ye Dai, Yue Cai, and Binlin Xu. "Research on the Method of Temporary Prestressing to Regulate the Stress in the Section during the Construction of the Main Arch Ring of the Cantilever Cast Arch Bridge." Applied Sciences 12, no. 19 (2022): 10070. http://dx.doi.org/10.3390/app121910070.

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To control the level of tensile stress in the section of reinforced concrete arch cantilever construction, a construction control method of temporary prestressing reinforcement is proposed in this study. The influence law of temporary prestressing on the arch ring section stress is revealed based on the engineering background (Shatuo Special Bridge in Guizhou). Meanwhile, a temporary prestressing test is carried out on the ring section of the main arch to verify the effectiveness of the method. The results show that the prestressing configuration during the construction of the main arch ring o

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10

Aloisio, Angelo. "Aspects of Vibration-Based Methods for the Prestressing Estimate in Concrete Beams with Internal Bonded or Unbonded Tendons." Infrastructures 6, no. 6 (2021): 83. http://dx.doi.org/10.3390/infrastructures6060083.

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The estimate of internal prestressing in concrete beams is essential for the assessment of their structural reliability. Many scholars have tackled multiple and diverse methods to estimate the measurable effects of prestressing. Among them, many experimented with dynamics-based techniques; however, these clash with the theoretical independence of the natural frequencies of the forces of internally prestressed beams. This paper examines the feasibility of a hybrid approach based on dynamic identification and the knowledge of the elastic modulus. Specifically, the author considered the effect of

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11

He, Zhi-Qi, Hao Hong, Zhao Liu, and Zhongguo John Ma. "Three-dimensional spreading of prestressing forces in box girders." Structures 33 (October 2021): 4803–16. http://dx.doi.org/10.1016/j.istruc.2021.07.051.

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12

Xu, Yong, Xin Huang, Yingda Zhang, Yusen Qu, Yujie Fan, and Guoqin Yang. "Research on Lateral Resistance Performance of Prestressed Cross-Laminated Timber–Concrete Composite Structures under Reciprocating Loads." Materials 17, no. 11 (2024): 2485. http://dx.doi.org/10.3390/ma17112485.

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Cross-Laminated Timber (CLT) and concrete composite structures represent an architectural system that integrates the strengths of both materials. In this innovative configuration, the CLT and concrete collaborate synergistically, harnessing their individual merits to achieve enhanced structural performance and functionality. Specifically, the CLT offers a lightweight design, superior bending resistance, and immense engineering plasticity, while concrete boasts exceptional compressive strength and durability. This study investigates the mechanical performance of CLT–concrete composite structur

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13

Kravchuk, V. A. "Free oscillations of steel beams prestressed by wall stretching." Вестник гражданских инженеров 17, no. 6 (2020): 97–103. http://dx.doi.org/10.23968/1999-5571-2020-17-6-97-103.

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The article presents the study results of the impact of steel beam prestressing by wall stretching on changes in the circular frequency, frequency, period, and number of oscillations per minute for free oscillation, and for oscillation taking into account the resistance forces. The forced oscillations of the beam under impulse loading are investigated. There has been carried out a comparative analysis of the dynamic parameters of prestressed beams and conventional beams of equal cross-section with the same load-bearing capacity parameters. The analysis results of the influence of resistance fo

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14

Pažma, Peter, Viktor Borzovič, and Jaroslav Halvonik. "Secondary Effects of Prestressing at ULS on Hyperstatic Structures." Key Engineering Materials 691 (May 2016): 138–47. http://dx.doi.org/10.4028/www.scientific.net/kem.691.138.

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Secondary (parasitic) effects of prestressing develop in hyperstatic structures (continuous beams) due to restraining of imposed deformation by hyperstatic restraints. These effects may, in some case, significantly influence internal forces and stresses in prestressed structures. Internal forces due to the secondary effects should be included in design combinations for verification of both ultimate and serviceability limit state. Because secondary effects are influenced by structural system, there is a question how they will change after changing of the structural system e.g. due to developmen

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15

Sun, Wei, Brad D. Weldon, Michael J. McGinnis, and Ruinian Jiang. "Numerical and digital image correlation study of the flexural behavior of prestressed ultra-high-performance concrete beams made from locally available materials." PCI Journal 69, no. 1 (2024): 22–39. http://dx.doi.org/10.15554/pcij69.1-01.

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This paper presents finite element simulations of the flexural behavior of three prestressed ultra-high-performance concrete (UHPC) beams based on the concrete damaged plasticity model (CDPM) available within Abaqus. A novel numerical model that applies the prestressing force through surface traction is proposed. The flexural deformation of the prestressed UHPC beams is simulated from the application of the prestressing force through failure under flexural loading. Material properties were measured and informed values for CDPM input parameters. The model was compared with four-point loading te

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16

AVERSENG, J., and B. CROSNIER. "PRESTRESSING TENSEGRITY SYSTEMS — APPLICATION TO MULTIPLE SELFSTRESS STATE STRUCTURES." International Journal of Structural Stability and Dynamics 04, no. 04 (2004): 543–57. http://dx.doi.org/10.1142/s0219455404001379.

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Stress control is a major issue in the development of prestressed structures like the tensegrity systems that gain from it equilibrium and stability. In this paper, we present a simple method for adjusting the whole set of normal forces in this kind of structure, based on a combination of influences determined from the unit variations of rest lengths for a reduced set of active cables. According to an elementary criterion, tension and compression forces are kept in a reduced domain during the implementation stage in order to avoid unwanted transitory stress levels. The process is then simulate

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17

Ponechal, Radoslav, Peter Koteš, Daniela Michálková, Jakub Kraľovanec, and František Bahleda. "Effect of Water Condensate on Corrosion of Wires in Ungrouted Ducts." Materials 14, no. 24 (2021): 7765. http://dx.doi.org/10.3390/ma14247765.

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In the case of existing prestressed concrete structures, information about the actual state of prestressing is an important basis for determining their load-carrying capacity, as well as remaining service lifetime. This is even more important in the case of existing prestressed concrete bridges, which are exposed to a more aggressive environment than the other prestressed concrete structures. The level of prestressing is affected and reduced by prestress losses at a given time. In calculating the internal forces and stresses, required for the assessment of the Ultimate Limit State and the Serv

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18

Halvoník, Jaroslav, Peter Pažma, and Radoslav Vida. "Secondary Moments due to Prestressing with Different Bond at the Ultimate Limit State." Slovak Journal of Civil Engineering 26, no. 1 (2018): 10–18. http://dx.doi.org/10.2478/sjce-2018-0002.

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Abstract Secondary effects of prestressing develop in statically indeterminate structures (e.g., continuous beams) due to the restraint of deformations imposed by hyperstatic restraints. These effects may significantly influence internal forces and stresses in prestressed structures. Secondary effects are influenced by the redundancy of a structural system, which raises the question of whether they will remain constant after a change in the structural system, e.g., due to the development of plastic hinge(s) in a critical cross-section(s) or after the development of a kinematic mechanism, or if

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19

Won, Jeong-Hun, Kwang-Il Cho, Ji-Hyun Yoon, and Sang-Hyo Kim. "Innovative Key-Segment Closing Method Using Thermal Prestressing Technique for Partially Earth-Anchored Cable-Stayed Bridges." Advances in Structural Engineering 11, no. 5 (2008): 549–64. http://dx.doi.org/10.1260/136943308786412041.

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This paper proposes an innovative key-segment closing method for partially earth-anchored cable-stayed bridges erected using free cantilever construction method, and examines its feasibility by performing a construction sequence analysis. The proposed method is based on the thermal prestressing technique, which gives an artificial heat to the girder in a cantilever state, in order to introduce the closing force required for connecting the key-segment to the adjacent segment by means of thermal expansion. The new method not only provides a feasible closing method for partially earth-anchored ca

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20

Kim, Jae-min, Hyun-woo Kim, Song-yi Choi, and Sung-yong Park. "Measurement of Prestressing Force in Pretensioned UHPC Deck Using a Fiber Optic FBG Sensor Embedded in a 7-Wire Strand." Journal of Sensors 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/8634080.

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This paper presents the results of the performance test and long-term monitoring of the prestressing force inside concrete performed on a pretensioned Ultra-High Performance Concrete (UHPC) deck. The force is measured by applying a 7-wire strand embedded with an FBG (Fiber Bragg Grating) sensor. The performance test was conducted on a 3.7 m × 1.8 m pretensioned deck specimen through wheel loading tests to verify the applicability of the measurement method. In addition, a 12.3 m long and 4.8 m wide bridge with a pretensioned UHPC deck was erected and long-term monitoring was conducted over thre

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21

Jaeger, Leslie G., Baidar Bakht, and Gamil Tadros. "Equivalent area of voided slabs." Canadian Journal of Civil Engineering 25, no. 4 (1998): 797–801. http://dx.doi.org/10.1139/l98-002.

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In order to calculate prestress losses in the transverse prestressing of voided concrete slabs, it is sometimes convenient to estimate the thickness of an equivalent solid slab. The Ontario Highway Bridge Design Code, as well as the forthcoming Canadian Highway Bridge Design Code, specifies a simple expression for calculating this equivalent thickness. This expression is reviewed in this technical note, and a simple alternative expression, believed to be more accurate, is proposed, along with its derivation. It is shown that the equivalent solid slab thickness obtained from consideration of in

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22

Chapaev, Takhir, and Nurilla Noraliev. "Determination of critical stresses during prestressing along the entire length of a circular-cylindrical shell." E3S Web of Conferences 262 (2021): 01030. http://dx.doi.org/10.1051/e3sconf/202126201030.

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In the Russian Federation, there is an urgent issue of grain storage and processing to be resolved through the reconstruction of old and construction of new storage facilities. Currently, the most common construction is represented by steel granaries, erected by rolling using prestressing in shells. The relevance of the problem of stability of the wall of a granary, taking into account the main factors, affecting the strength, requires further theoretical and experimental study. One of the most frequently used in solving stability problems is the energy criterion in the form of Ritz-Timoshenko

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23

Tanjung, Darlina. "The Main Structure of the Prestress Bridge: Ultimate Calculation Analysis Using Bridge Management System (BMS 1992) Planning Method." International Journal of Research and Review 9, no. 3 (2022): 127–37. http://dx.doi.org/10.52403/ijrr.20220317.

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One of the functions of the bridge is as a medium between two parts of the road that are cut off, the existence of a bridge construction facility is very beneficial for the local community from an economic and social perspective. This analysis aims to determine the dimensions of the structure that will be used in determining the forces acting on the main structure of the bridge, especially the ultimate force in controlling the beams in the main structure. The main beam uses AASHTO standard prestressed beam type V, with a beam height of 1600 mm, with an initial prestressing force of F = 691943,

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Chirag, Kedare. "The Influence of Skew Angles on Prestressed Bridges." International Journal of Recent Technology and Engineering (IJRTE) 14, no. 1 (2025): 41–49. https://doi.org/10.35940/ijrte.A8240.14010525.

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<strong>Abstract: </strong>Prestressed concrete bridges are crucial in modern infrastructure due to their high durability, low maintenance requirements, and superior load-carrying capacity. However, skew bridges, which feature a non-perpendicular alignment with traffic flow, pose significant challenges in analysis and design. This study presents a comprehensive parametric investigation into the behaviour of prestressed skew bridges to enhance structural understanding and optimize design strategies. Advanced finite element techniques are utilized to analyse the effects of prestressing forces, m

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Chirag, Kedare. "The Influence of Skew Angles on Prestressed Bridges." International Journal of Recent Technology and Engineering (IJRTE) 14, no. 1 (2025): 41–49. https://doi.org/10.35940/ijrte.A8240.14010525/.

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<strong>Abstract: </strong>Prestressed concrete bridges are crucial in modern infrastructure due to their high durability, low maintenance requirements, and superior load-carrying capacity. However, skew bridges, which feature a non-perpendicular alignment with traffic flow, pose significant challenges in analysis and design. This study presents a comprehensive parametric investigation into the behaviour of prestressed skew bridges to enhance structural understanding and optimize design strategies. Advanced finite element techniques are utilized to analyse the effects of prestressing forces, m

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Kedare, Chirag, and Prof Roshni John. "The Influence of Skew Angles on Prestressed Bridges." International Journal of Recent Technology and Engineering (IJRTE) 14, no. 1 (2025): 41–49. https://doi.org/10.35940/ijrte.a8240.14010525.

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Prestressed concrete bridges are crucial in modern infrastructure due to their high durability, low maintenance requirements, and superior load-carrying capacity. However, skew bridges, which feature a non-perpendicular alignment with traffic flow, pose significant challenges in analysis and design. This study presents a comprehensive parametric investigation into the behaviour of prestressed skew bridges to enhance structural understanding and optimize design strategies. Advanced finite element techniques are utilized to analyse the effects of prestressing forces, material properties, and geo

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27

Muskan, Soudagar, R. Shreedhar, and Hiremath Shradha. "Study on the optimal span-to-depth ratio for two-span post-tensioned prestressed concrete box girder bridges." i-manager’s Journal on Civil Engineering 14, no. 3 (2024): 25. https://doi.org/10.26634/jce.14.3.21106.

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This paper presents a comprehensive analysis of a two-span post-tensioned prestressed concrete cellular box girder bridge deck, focusing on the effects of dead load, moving load, and prestressing across various span lengths (30m, 40m, 50m, 60m, and 70m) and different span-to-depth (L/D) ratios of 23, 24, 25, 26, and 27. This study follows the limit state method as per IRC 112-2011 guidelines. Key parameters analyzed include bending moments, shear forces, and top fiber stresses. This study aims to identify the optimal L/D ratio that balances structural efficiency and material usage. The results

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Elshazli, Mohamed T., Mohanad M. Abdulazeez, Mohamed ElGawady, and Ahmed Ibrahim. "Comprehensive Numerical Modeling of Prestressed Girder Bridges under Low-Velocity Impact." Buildings 14, no. 3 (2024): 640. http://dx.doi.org/10.3390/buildings14030640.

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Accidental collisions involving over-height trucks that exceed vertical clearance limits and bridge superstructures frequently happen, resulting in compromised girders and potential threats to structural safety and performance. The numerical simulation of large-scale prestressed girder bridge collisions poses challenges due to the associated nonlinearities, as well as the limited availability of large-scale experimental testing data in the literature due to cost and complexity constraints. This study introduces a numerical modeling approach to efficiently capture the response of prestressed gi

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SOUZA JUNIOR, O. A., and D. R. C. OLIVEIRA. "Influence of the cable´s layout on the shearing resistance of prestressed concrete beams." Revista IBRACON de Estruturas e Materiais 9, no. 5 (2016): 765–95. http://dx.doi.org/10.1590/s1983-41952016000500008.

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Abstract Little information on experimental investigations regarding the influence of the prestressing forces in the shear resistance of prestressed beams is found in the technical literature. Thus, it was experimentally evaluated the shear resistance of six post-tensioned prestressed concrete beams with cross section of (150 x 450) mm2, total length of 2400 mm and concrete's compressive resistance of 30 MPa, with the variables of this work being the layout of the prestressing cable, straight or parabolic, and the stirrups geometric rate. Verticals displacement, steel and concrete's strains an

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Slaitas, Justas, Remigijus Šalna, and Juozas Valivonis. "Anchoring Issues of CFRP Laminates to Concrete Members." Polymers 14, no. 12 (2022): 2338. http://dx.doi.org/10.3390/polym14122338.

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In recent years, carbon fibre reinforced polymer (CFRP) laminates have conquered the structural rehabilitation market due to their ease and quick installation, high strength, anticorrosion properties, and other properties often repeated in the literature. The full potential of these high-strength elements can only be exploited by prestressing. However, the glued laminate joint is partially rigid, resulting in slippage that leads to premature debonding and failure. Therefore, anchoring of the laminate ends is required to stop or delay premature failure and/or perform prestressing. This article

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Dhamija, Koushal, Vegiraju Naresh Kumar Varma, Manish Gupta, et al. "Comparative analysis of RCC and PT Slabs underneath Lateral Loading: A Structural study using ETABS." E3S Web of Conferences 552 (2024): 01140. http://dx.doi.org/10.1051/e3sconf/202455201140.

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ETABS software is used to analyze the structural response of reinforced concrete (RCC) and post-tensioned (PT) slabs under lateral loading. This study investigates RCC and PT slabs’ behavior by using finite element analysis to determine bending moments, shear forces, and storey drift. Prestrassed slabs display lower bending moments and shear forces than RCC slabs, demonstrating the effectiveness of prestressing in reducing structural requirements. A reduction in storey drift also indicates improved resistance to lateral deformations in PT slabs. In terms of structural performance and cost-effe

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Rai, Gopal L. "Advanced Active Prestressed CFRP in RCC Structures." Advanced Materials Research 1129 (November 2015): 290–97. http://dx.doi.org/10.4028/www.scientific.net/amr.1129.290.

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. The need for rehabilitation of reinforced concrete structures is rapidly increasing. Fibre reinforced polymer (FRP) composite materials for concrete structures have high strength-to-weight ratios that can provide high prestressing forces while adding minimal additional weight to a structure. They also have good fatigue properties and exhibit low relaxation losses, both of which can increase the service lives and the load carrying capacities of reinforced concrete structures. Carbon fiber reinforced polymer (CFRP) composite system is integrated system based on carbon fibres and epoxy resins.

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Recupero, Antonino, Nino Spinella, Piero Colajanni, and Cosimo D. Scilipoti. "Increasing the Capacity of Existing Bridges by Using Unbonded Prestressing Technology: A Case Study." Advances in Civil Engineering 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/840902.

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External posttensioning or unbonded prestressing was found to be a powerful tool for retrofitting and for increasing the life extension of existing structures. Since the 1950s, this technique of reinforcement was applied with success to bridge structures in many countries, and was found to provide an efficient and economic solution for a wide range of bridge types and conditions. Unbonded prestressing is defined as a system in which the post-tensioning tendons or bars are located outside the concrete cross-section and the prestressing forces are transmitted to the girder through the end anchor

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Zhang, Ling Mei. "Study on the Full Scale Model Test for Pylon Segment of Cable-Stayed Bridge." Applied Mechanics and Materials 361-363 (August 2013): 1362–65. http://dx.doi.org/10.4028/www.scientific.net/amm.361-363.1362.

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Anchorage zone of tower is a key part of cable-stayed bridge. Some factors such as powerful local concentrated forces, anchor forces from prestressed steels and weaken factors from hole make this area in complicated states. Analysis of strength performance at the anchorage zone of cable-stayed bridge tower has been attracted attention in bridge engineering. Full-scale model test and force analysis was carried out when a typical cable-stayed bridge was selected as the research object. Three stress states of anchorage zone are consider, that is under prestressing, under cable forces in completio

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35

Partskhaladze, Gaioz, Julian Alcala, Elguja Medzmariashvili, Gocha Chavleshvili, Bichiko Surguladze, and Víctor Yepes. "Heuristic Optimization of a New Type of Prestressed Arched Truss." Materials 15, no. 22 (2022): 8144. http://dx.doi.org/10.3390/ma15228144.

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This paper represents new approaches for calculating, designing, and optimizing prestressed arched trusses with a tie member. Structural systems with long spans, such as trusses, beams, frames, etc., are subjected to a considerable/substantial risk of losing load-carrying capacity because of the different types of loads used. Some traditional design methods define the values of prestressing force in the tie member and internal forces in the truss elements to avoid this load capacity loss. However, the accuracy and limits of the determination of the forces are not necessarily known. The authors

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Kuebler, Michael, and Maria Anna Polak. "Critical review of the CSA A14-07 design provisions for torsion in prestressed concrete poles." Canadian Journal of Civil Engineering 41, no. 4 (2014): 304–14. http://dx.doi.org/10.1139/cjce-2013-0211.

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This paper focuses on the effect of the transverse reinforcement in concrete poles and its influence on torsional strength in an effort to simplify the governing Canadian prestressed concrete pole code (CSA A14-07). The rationale behind the CSA code values for amount, spacing, and direction of the transverse reinforcement is not apparent. A testing program consisting of 14 concrete pole specimens were produced to investigate the torsional response. The specimens were divided into two groups with different tip diameters. Within each group the spacing and direction of the wound helical transvers

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Zeng, Jian Yu, and Xiao Zu Su. "Internal Force System and Current Secondary Moment Concept in Prestressed Structures." Applied Mechanics and Materials 501-504 (January 2014): 611–19. http://dx.doi.org/10.4028/www.scientific.net/amm.501-504.611.

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The internal forces in a prestressed concrete structure are of special nature due to the existence of tendons. And flaws can be found in the traditional concept of secondary moment such that common computation method of secondary moment may produce unreasonable results. This article aims at getting a better understanding of internal forces in prestressed structures and solving the relevant problems. Starting from the basic principles of internal force analysis, a new system of internal forces is put forward by which the relationship between the compression resultant on concrete cross-section a

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Azarine Carissa Yuniar, Nawir Rasidi, and Wahiddin Wahiddin. "Perencanaan Ulang Struktur Atas Jembatan Sambungrejo Sidoarjo dengan Menggunakan Prestressed Concrete I Girder." Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil 2, no. 4 (2024): 200–219. http://dx.doi.org/10.61132/konstruksi.v2i4.553.

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This study aims to redesign the superstructure of the Sambungrejo Bridge in Sidoarjo, which has a span length of 16 meters. The Sambungrejo Bridge originally used WF 700.300.15.28 steel girders and C 300.100.10.16.8 diaphragms,that are susceptible to corrosion, especially during floods. The redesign involves replacing the steel girder with a Prestressed Concrete I Girder (PCI Girder) H-900mm, 170mm thick, produced by WIKA Beton, known for its superior corrosion resistance and construction efficiency. The research methodology includes structural analysis using Robot Structural Analysis Professi

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Chen, Hung-Liang (Roger), and Komwut Wissawapaisal. "Measurement of Tensile Forces in a Seven-Wire Prestressing Strand Using Stress Waves." Journal of Engineering Mechanics 127, no. 6 (2001): 599–606. http://dx.doi.org/10.1061/(asce)0733-9399(2001)127:6(599).

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Park, Yeong-Seong, and Yong-Hak Lee. "Effects of Nonsymmetrical Prestressing Forces on Torsion in Prestressed Thin-Walled Flexural Members." Journal of Engineering Mechanics 142, no. 2 (2016): 04015077. http://dx.doi.org/10.1061/(asce)em.1943-7889.0000989.

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Asadolahi, Seyyed Morteza, and Nader Fanaie. "Performance of self-centering steel moment frame considering stress relaxation in prestressed cables." Advances in Structural Engineering 23, no. 9 (2020): 1813–22. http://dx.doi.org/10.1177/1369433219900940.

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Buildings can be designed to limit the earthquake-induced damage to members that can easily be repaired. Self-centering moment-resisting frames can be used as effective structural systems for this purpose. Self-centering moment-resisting frames with prestressed cables are able to return the structure to its original position after the earthquake. The internal forces in self-centering moment-resisting frames are transferred between the beam and the column by post-tensioned cables. As a main member of self-centering connections, prestressed cables play a significant role in such systems. Cable t

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Zuo, Xin Dai, Zhao Le Qu, and Bin Ge. "Spatial Effects and Broken-up Analysis for Bottom Plates of Box Girders in a Large Span Rigid Frame - Continuous Beam Bridge." Applied Mechanics and Materials 178-181 (May 2012): 2268–72. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.2268.

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The author took a rigid frame-continuous beam bridge for example, analyzed by means of plane finite element and space finite element methods. In the space model, corrugated pipes were built in order to consider the weaken effects to cross-sections. Aimed at the least well stage which is after prestressing and before grouting, spatial stresses were indicated. Final results indicate exceeded transverse tensile stresses caused by radial forces are the most important factor which led to bursting cracks.

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Shi, Bo Wen, and Tian Wen Wang. "Crack Analysis on Reinforced Concrete Beams Strengthened by Externally Prestressing Vertical Tensioning Method." Applied Mechanics and Materials 204-208 (October 2012): 3104–13. http://dx.doi.org/10.4028/www.scientific.net/amm.204-208.3104.

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In this paper, seven reinforced concrete beams (two contrast beams and five externally reinforced beams) were tested. The crack regularity under different tension stresses was analyzed through experimental data. Taking the stress mode under pressure for the triangle area, in the tension zone in the shape of a trapezoid , the crack resistance equation of externally prestressing reinforced rectangle beam is derived from balance method of the internal forces and moment, and the results coincide with the experiment results well.

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Naser, Ali Fadhil, and Zong Lin Wang. "Monitoring of External Prestressing Tendons Construction Process of Jiamusi Highway Prestressed Concrete Bridge during Strengthening in China." Advanced Materials Research 163-167 (December 2010): 2873–79. http://dx.doi.org/10.4028/www.scientific.net/amr.163-167.2873.

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Jiamusi highway prestressed concrete bridge is located in the Jiamusi City within Heilongjiang province in the east north of China. The strengthening and repairing of the bridge structure can be provided an effective and economic solution in appropriate situation. The objective of this study are to monitor the construction process of external prestressing tendons for strengthening of Jiamusi highway prestressed concrete bridge. Monitoring process includes measurement of external prestressing tendons natural frequency, monitoring of tensile forces values of external prestressing tendons, monito

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Cruz, A., W. Vélez, and P. Thomson. "A novel and robust technique for identifying prestress forces in prestressed concrete beams using generic finite elements and simulated annealing algorithms." Journal of Applied Research and Technology 19, no. 3 (2021): 250–62. http://dx.doi.org/10.22201/icat.24486736e.2021.19.3.1696.

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This work presents a novel technique for estimating the prestressing forces in simply supported beams with axial prestress force. The technique is based on the use of generic finite elements for modeling the beam and experimental time-domain response to simultaneously identify axial forces and generic parameters. Parameter updating is accomplished using a Simulated Annealing algorithm implemented for the solution of the prestress force identification problem. The effectiveness of the method was assessed in numerical simulations and was further verified on an experimental prestressed concrete b

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Chen, Hung-Liang (Roger), and Komwut Wissawapaisal. "Application of Wigner-Ville Transform to Evaluate Tensile Forces in Seven-Wire Prestressing Strands." Journal of Engineering Mechanics 128, no. 11 (2002): 1206–14. http://dx.doi.org/10.1061/(asce)0733-9399(2002)128:11(1206).

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Kremnev, V. A., V. S. Kuznetsov, and Y. A. Talyzova. "Peculiarities of stress distribution in beamless floor plate as a result of prestressing forces." Vestnik MGSU, no. 9 (September 2014): 48–53. http://dx.doi.org/10.22227/1997-0935.2014.9.48-53.

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Huang, Dongzhou, and Mohsen Shahawy. "Analysis of Tensile Stresses in Transfer Zone of Prestressed Concrete U-Beams." Transportation Research Record: Journal of the Transportation Research Board 1928, no. 1 (2005): 134–41. http://dx.doi.org/10.1177/0361198105192800115.

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Prestressed U-beam bridges compare favorably in cost and appearance to traditional concrete I-beam bridges. Consequently, U-beam bridges are gaining in popularity and usage, especially when aesthetic issues are deemed important. U-beam bridges first appeared in Florida in 2000; however, during construction, cracks developed in the webs of the U-beams. This paper presents results of an analysis of representative cracking of U-beams and proposes a practical method for the transfer zone stirrup design. For the purpose of the analysis, the U-beam is divided into a series of finite shell-plate elem

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Kim, Jee Sang, and Dong Hun Choi. "Bond-Slip Relation of Pretensioned Concrete Members for Various Tensioning Forces." Materials Science Forum 857 (May 2016): 327–30. http://dx.doi.org/10.4028/www.scientific.net/msf.857.327.

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The bond between prestressing (PS) steel and concrete plays an important role in pretensioned concrete members because the pretension force is directly transferred from PS steel to concrete by cutting or releasing the PS steels at the end of the members. While in capacity design approaches, designing for bond is considered to be a question of adequate strength along the bar length, in performance-based design approaches, the level of deformation as well as bond strength must be known and the bond-slip curves may give enough information. The purpose of this paper is to derive bond-slip curves f

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Huang, Wei, Zhenhui Fan, Kang Liu, et al. "Experimental and Analytical Investigation of Self-Centering Precast Composite Walls with Sloped Plane Friction Dampers." Materials 17, no. 6 (2024): 1319. http://dx.doi.org/10.3390/ma17061319.

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To reduce the damage to reinforced concrete shear walls in earthquakes and repair costs, a self-centering wall with sloped plane friction dampers (SPFDs) is proposed. In addition to the SPFDs, the proposed wall includes a precast composite wall, steel wall toes, and post-tensioned (PT) tendons. The steel wall toes embedded in the base of the precast wall were used to improve its strength, and the SPFDs installed in the steel toes were used to increase its energy dissipation capacity. To investigate the effect of the initial PT force and prestressing clamping force of the friction bolt on the s

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