1. School of Civil Engineering, Southwest Jiaotong University, Chengdu Sichuan 610031, China;
2. Department of Civil Engineering, Emei Campus, Southwest Jiaotong University, Emeishan Sichuan 614202, China;
3. China Yangtze River Three Gorges Corporation, Chengdu Sichuan 610042, China
Influence of Error of Unstressed Cable Length on Mechanical Behavior of Thousand-meter-scale Hybrid Girder Cable-stayed Bridge
XIE Ming-zhi1,2, YANG Yong-qing1, BU Yi-zhi1, WANG Xue-wei1, WEI Ran3
1. School of Civil Engineering, Southwest Jiaotong University, Chengdu Sichuan 610031, China;
2. Department of Civil Engineering, Emei Campus, Southwest Jiaotong University, Emeishan Sichuan 614202, China;
3. China Yangtze River Three Gorges Corporation, Chengdu Sichuan 610042, China
摘要Taking Edong Yangtze River Bridge as the research subject, the influence of error of unstressed cable length on the geometric shape and internal force of super-span hybrid girder cable-stayed bridge during completion is studied on the basis of the geometry control method with full consideration of the structural nonlinear geometrical effect. Moreover, the mechanical behaviors of the center and side spans of the bridge and their control strategies are discussed. The analysis shows that structural differences between the center and side spans exerted an influence on the geometric shape and internal force. The influence of unstressed cable length error on the geometric shape in the center span of the completed bridge is greater than that of the side span, whereas the impact on internal force in the side span is greater than that in the center span. The mechanical behavior is relatively independent between span types. In addition, the percentage change of the girder stress reaches the maximum level in the steel/concrete composite segment, in which the mechanical behavior is highly complicated. Therefore, its design and construction require close attention. Moreover, the difference in stiffness between the center and side spans has a remarkable impact on cable force redistribution in the completion stage, and the changes in cable force differ between the span types.
Abstract：Taking Edong Yangtze River Bridge as the research subject, the influence of error of unstressed cable length on the geometric shape and internal force of super-span hybrid girder cable-stayed bridge during completion is studied on the basis of the geometry control method with full consideration of the structural nonlinear geometrical effect. Moreover, the mechanical behaviors of the center and side spans of the bridge and their control strategies are discussed. The analysis shows that structural differences between the center and side spans exerted an influence on the geometric shape and internal force. The influence of unstressed cable length error on the geometric shape in the center span of the completed bridge is greater than that of the side span, whereas the impact on internal force in the side span is greater than that in the center span. The mechanical behavior is relatively independent between span types. In addition, the percentage change of the girder stress reaches the maximum level in the steel/concrete composite segment, in which the mechanical behavior is highly complicated. Therefore, its design and construction require close attention. Moreover, the difference in stiffness between the center and side spans has a remarkable impact on cable force redistribution in the completion stage, and the changes in cable force differ between the span types.
基金资助:Supported by the National Natural Science Foundation of China (No.51178394);the Fundamental Research Funds for Central Universities (No.2682013BR015EM)
谢明志, 杨永清, 卜一之, 王学伟, 魏然. 无应力索长误差对千米级混合梁斜拉桥影响分析[J]. Journal of Highway and Transportation Research and Development, 2014, 8(3): 30-36.
XIE Ming-zhi, YANG Yong-qing, BU Yi-zhi, WANG Xue-wei, WEI Ran. Influence of Error of Unstressed Cable Length on Mechanical Behavior of Thousand-meter-scale Hybrid Girder Cable-stayed Bridge. Journal of Highway and Transportation Research and Development, 2014, 8(3): 30-36.
[1] SHI Xue-fei, XIANG Hai-fan. Analysis of Construction Control Systems of Cable-stayed Bridge[J]. Journal of Tongji University, 2001, 29(1):55-59. (in Chinese)
[2] MANABE Y, HIRAHARA N, MUKASA N, et al. Accuracy Control on the Construction of Tatara Bridge[C]//Cable-stayed Bridges-Past, Present and Future:Proceedings of IABSE Conference.Malm:IABSE, 1999:332-335.
[3] HIRAHARA N. Erection of Superstructure of Tatara Bridge (Report I):Tower Erection and Large Block Erection of Deck at Tower[J]. Honshi Technical Report, 1997, 21:33-40.
[4] LI Qiao, BU Yi-zhi, ZHANG Qing-hua. Whole-procedure Adaptive Construction Control System Based on Geometry Control Method[J]. China Civil Engineering Journal, 2009, 42(7):69-77. (in Chinese)
[5] CHEN Kai-li, YU Tian-qing, XI Gang. Development and Prospective of Hybrid Girder Cable-Stayed Bridge[J]. Bridge Construction, 2005(2):1-4. (in Chinese)
[6] ZHAI Shi-hong, ZHANG Zhao-xia. Discussion of the Construction Control of the Upper Structure of Domestic Super-span Steel Cable-stayed Bridge[J]. Journal of China & Foreign Highway, 2006, 26(1):108-112. (in Chinese)
[7] HUANG Can, ZHAO Lei, BU Yi-zhi. Sensitivity Analysis of Single-parameters for Super-span Cable-stayed Bridge Based on Geometry Control Method[J]. Journal of Highway and Transportation Research and Development, 2012, 29(5):70-75. (in Chinese)
[8] WU Jie, LUO Xiao-qun, ZHANG Qi-lin. Linetype Control for Construction of Long-span Steel Cable-stayed Bridges[J]. Journal of Tongji University:Natural Science, 2012, 40(9):1282-1286. (in Chinese)
[9] QIN Shun-quan. Application of Unstressed State Control Method to Calculation for Erection of Cable-stayed Bridge[J]. Bridge Construction, 2008(2):13-16. (in Chinese)
[10] LI Qiao, BU Yi-zhi, ZHANG Qing-hua, et al. Introduction and Application of Whole-procedure Construction of Long-span Cable-stayed Bridge Based on Geometry Control Method[M]. Chengdu:Southwest Jiaotong University Press, 2009. (in Chinese)
[11] SUN Li-shan. Geometry Control Method in Long-span Hybrid Girder Cable-stayed Bridges[D]. Chengdu:Southwest Jiaotong University, 2010. (in Chinese)
[12] MENG Qing-cheng, QI Xin, LI Qiao, et al. Algorithm for Relevant Parameters of Stay Cables of Cable-stayed Bridge with Span Length of 1000-m Scale[J]. Bridge Construction, 2009(2):58-60. (in Chinese)
[13] ZHAO Can-hui, BU Yi-zhi. Construction Control Technology of Super Long-span Hybrid Girder Cable-stayed Bridge[R]. Chengdu:Southwest Jiaotong University, 2011. (in Chinese)
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常柱刚, 王林凯, 夏飞龙. 基于CV NewMark-b法桥梁风致振动FSI数值模拟[J]. Journal of Highway and Transportation Research and Development, 2019, 13(2): 28-37.
2014, Vol. 8 
