Research on Global and Local Vibration of Long-span Cable-stayed Bridge Induced by Passing Train Based on Fine Finite Element Method

被引：0
|
作者：
Zhu Z. [1 ,2 ]
Xu Z. [1 ]
Cheng Y. [1 ]
Wang L. [1 ]
Cai C. [3 ]
机构：
[1] School of Civil Engineering, Central South University, Changsha
[2] National Engineering Laboratory for High Speed Railway Construction, Central South University, Changsha
[3] State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu
来源：
Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences | 2018年 / 45卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Dynamic response; Finite element method; Railway cable-stayed bridge; Train-bridge coupled vibration; Wheel-rail contact;
D O I：
10.16339/j.cnki.hdxbzkb.2018.01.002
中图分类号：
学科分类号：
摘要：
To investigate the global and local dynamic response of plate-truss composite structure (i. e., cable-stayed bridge induced by train-bridge coupling vibration), a numerical approach was presented based on train-bridge coupled dynamics. A coupled train-bridge system model composed of a 3D vehicle model with 31 degrees of freedom, a 3D fine bridge model established by the direct stiffness method, and an assumed wheel-rail spatial contact relationship based on the Hertz nonlinear contact model and nonlinear creep force model were developed. The self-developed software TRBF-DYNA was applied to analyze the dynamic responses, such as acceleration, displacements and stresses. The Dongting Lake three tower cable-stayed bridge with a main span of 406 m in Jingyue railway line was taken as an example. The global and local dynamic response of the bridge, variations of running safety, and ride comfort index were discussed under different routes, speeds and track irregularities conditions. The results show that the local dynamic response of orthotropic steel bridge deck is much larger than the response of steel truss girder. Dynamic coefficient of large-span cable-stayed bridge is small, and the influence of the speeds and track irregularity on dynamic coefficient of large-span cable-stayed bridge is insignificant. The lower chord and web members of steel truss girder are in high cycle fatigue stress state, which should be paid more attention in the study of their fatigue properties. Further, the dynamic response of bridge, running safety indexes and ride comfort index satisfy the code requirements under the designed running speed. © 2018, Editorial Department of Journal of Hunan University. All right reserved.
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页码：9 / 18
页数：9
相关论文
共 22 条
  • [1] Hu N., Dai G.L., Yan B., Et al., Recent development of design and construction of medium and long span high-speed railway bridges in China, Engineering Structures, 74, 1, pp. 233-241, (2014)
  • [2] Song X.D., Wu D.J., Li Q., Dynamic impact analysis of double-tower cable-stayed maglev bridges using a simple model, Journal of Bridge Engineering, 19, 1, pp. 34-43, (2013)
  • [3] Cui S.A., Zhu B., Bai F.T., Et al., Coupled vibration analysis of vehicle-bridge system for crossing-channel cable-stayed bridge scheme over Qiongzhou strait, Journal of Vibration and Shock, 30, 5, pp. 106-110, (2011)
  • [4] Li Y.L., Xia F.L., Li L., Et al., Vertical static stiffness of ballastless tracks laid on long-span steel truss cable-stayed bridge, Journal of the China Railway Society, 36, 12, pp. 79-83, (2014)
  • [5] Bruno D., Greco F., Lonetti P., Dynamic impact analysis of long span cable-stayed bridges under moving loads, Engineering Structures, 30, 4, pp. 1160-1177, (2008)
  • [6] Kong X., Wu D.J., Cai C.S., Et al., New strategy of substru-cture method to model long-span hybrid cable-stayed bridges under vehicle-induced vibration, Engineering Structures, 34, 1, pp. 421-435, (2012)
  • [7] Zhang W., Cai C.S., Pan F., Finite element modeling of bridges with equivalent orthotropic material method for multi-scale dynamic loads, Engineering Structures, 54, 9, pp. 82-93, (2013)
  • [8] Yu Y., Deng L., Wang W., Et al., Local impact analysis for deck slabs of prestressed concrete box-girder bridges subject to vehicle loading, Journal of Vibration & Control, 23, 1, pp. 31-45, (2017)
  • [9] Xia H., Guo W.W., Zhang N., Et al., Dynamic analysis of a train-bridge system under wind action, Computers & Structures, 86, 19, pp. 1845-1855, (2008)
  • [10] Liu M.Y., Nie J.Q., Comparative analysis of the spatial FEM model of composite girder cable-stayed bridge with three towers, Journal of Civil Engineering and Management, 28, 3, pp. 164-168, (2011)
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