Effect of Flexural Stiffness of Stiffening Girder on Mechanical Performance of Hybrid Cable-Stayed Suspension Bridge

被引：0
|
作者：
He D. [1 ,2 ]
Xiao H. [1 ,2 ]
Fu Z. [1 ]
Pan T. [1 ]
Qiu Y. [1 ]
机构：
[1] China Railway Major Bridge Reconnaissance and '- Design Institute Co.Ltd., Wuhan
[2] School of Civil Engineering, Southwest Jiaotong University, Chengdu
来源：
Bridge Construction | 2023年 / 53卷
关键词：
finite element method; flexural stiffness of stiffening girder; hybrid cable-stayed suspension bridge; mechanical performance; rail-cum-road bridge;
D O I：
10.20051/j.issn.1003-4722.2023.S2.010
中图分类号：
学科分类号：
摘要：
This study presents the effect of flexural stiffness of stiffening girder on the mechanical properties of the hybrid cable-stayed suspension bridge. The Xihoumen Rail-cum-Road Bridge of Ningbo-Zhoushan Railway is used as a case. The finite element models -were built up in MIDAS Civil to analyze the variation of indicators of the mechanical performance of the bridge under nine different flexural stiffnesses of the stiffening girder, including vertical displacement, vertical rotation, longitudinal movement at expansion joints, main cable forces, longitudinal bending moment at the bottom of the towers and the tension ranges of end hanger cables under live loads. The results demonstrate that when the flexural stiffness of the stiffening girder is improved to 1 0 times of its original value, the above mentioned indicators would reduce by 38. 9 % > 50.0%, 13.5%, 0.4%, 13.2% and 56.4%, respectively. The effect of flexural stiffness of stiffening girder in the hybrid cable-stayed suspension bridge is distinctive on vertical rotation of the stiffening girder and tension ranges of end hanger cables under live loads, and weakens on the vertical displacement of the stiffening girder, longitudinal movement at expansion joints, and the longitudinal bending moment at the bottom of the towers, and is minimal to the maximum tension of main cables. © 2023 Wuhan Bridge Research Institute. All rights reserved.
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页码：65 / 71
页数：6
相关论文
共 20 条
  • [1] CHEN Renfu, Theory of Long-Span Suspension Bridges, (2015)
  • [2] WU Yong, Theoretical Analysis of Static Properties of Long-Span Suspension Bridge by Gravity Stiffness Method, (2015)
  • [3] WANG Libin, WU Yong, JIN Bohan, Deflection Characteristics of Three-Pylon Suspension Bridge Based on Gravity Stiffness Method, Journal of Chongqing Jiaotong University (Natural Science ), 34, 1, pp. 6-11, (2015)
  • [4] KANG Rui, ZHENG Kaifcng, LI Huaiguang, Et al., Rigidity Characteristics of Multi-Span Suspension Bridges under Train Loads[J], Journal of Southwest Jiaotong University, 45, 3, pp. 346-350, (2010)
  • [5] LIU Zhao, LIU Houjun, New Arithmetic for Cable Deflection and Gravity Stiffness of Suspension Bridges, Engineering Mechanics, 26, 6, pp. 127-132, (2009)
  • [6] XIAO Haizhu, GAO Zongyu, LIU Junfcng, Design of Main Bridge of Xihoumcn Rail-cum-Road Bridgc, Bridge Construction, 50, pp. 1-8, (2020)
  • [7] HE Dongshcng, XIAO Haizhu, Influence of Central Buckle on Mechanical Property of Combined Cable-Stayed and Suspension Bridgc, Bridge Construction, 50, pp. 23-28, (2020)
  • [8] LI Gang, HE Dongshcng, LIU Yuchcn, Et al., Load Bearing Capacity Analysis and Load Transfer Mechanism Study of Cable-Girder Anchorage Zone of Xihoumcn Rail-cum-Road Bridgc, Bridge Construction, 53, 3, pp. 40-47, (2023)
  • [9] PAN Tao, XIAO Haizhu, ZHAO Lin, Et al., Study of Wind-Resistant Performance and Control Measures for Very Wide Girder with Three Separated Boxes in Long-Span Bridge, Bridge Construction, 50, pp. 29-35, (2020)
  • [10] XIAO Haizhu, GAO Zongyu, HE Dongshcng, Et al., Parametric Study for a RaiTcum-Road Bridge of Combined Cable-Stayed and Suspension System [J], Bridge Construction, 50, 4, pp. 17-22, (2020)
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