Influence of displacement limiting cable on static and dynamic characteristics of three-span continuous suspension bridge

被引：2
|
作者：
Yuan Z. [1 ]
Wang H. [1 ]
Mao J. [1 ]
Su X. [1 ]
Zong H. [2 ]
机构：
[1] Southeast University, Key laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Nanjing
[2] Nanjing Highway Development(Group)Co.Ltd., Nanjing
来源：
Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2023年 / 53卷 / 03期
关键词：
actual measurement; displacement limiting cable; finite element; static and dynamic characteristics; three-span continuous suspension bridge;
D O I：
10.3969/j.issn.1001-0505.2023.03.003
中图分类号：
学科分类号：
摘要：
In order to study the influence of displacement limiting cable on the static and dynamic characteristics of structures, an asymmetric three-span continuous suspension bridge was taken as the engineering background. The finite element model of the bridge was established, and the correctness of the model was verified through actual measurement. The influences of displacement limiting cable on the main cable alignment, main beam alignment and dynamic characteristics of the bridge were investigated. The results show that the displacement limiting cable can coordinate the vertical deformation of the main cable and the main beam at the side span transition pier of the three-span continuous suspension bridge, so that the structure has a reasonable stress distribution. When there is no displacement limiting cable on one side, the maximum deformation of the main cable can reach 355.7 mm. Meanwhile, the stress of other slings is redistributed, resulting in the maximum positive deformation of the side span girder and the maximum negative deformation of the side span on the other side. When the entire bridge is not equipped with displacement limiting cable, the deformation of the main cable and both sides of the main beam reaches the maximum value, and the stress redistribution is symmetrically distributed. The displacement limiting cable mainly affects the first three vertical bending modal frequencies of three-span continuous suspension bridge. The vertical stiffness of the structure can be slightly improved by setting displacement limiting cable. © 2023 Southeast University. All rights reserved.
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页码：395 / 401
页数：6
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