Monitoring and analysis of thermal deformation in long-span suspension bridges

被引：0
|
作者：
Zhou Y. [1 ,2 ,3 ]
Chen B. [4 ]
Xia Y. [5 ]
机构：
[1] School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing
[2] Research Institute of Urbanization and Urban Safety, University of Science and Technology Beijing, Beijing
[3] Shunde Graduate School, University of Science and Technology Beijing, Guangdong, Foshan
[4] Hubei Province Key Laboratory of Roadway Bridge and Structural Engineering, Wuhan University of Technology, Wuhan
[5] Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University
来源：
Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2022年 / 50卷 / 08期
关键词：
deformation; heat transfer analysis; monitoring; suspension bridge; temperature distribution; theoretical formula;
D O I：
10.13245/j.hust.220814
中图分类号：
学科分类号：
摘要：
Taking the Tsing Ma Bridge in Hong Kong as an example，the characteristics of the temperature distribution and the patterns of the temperature-induced deformation of suspension bridges were systematically investigated via field measurement，numerical simulation，and theoretical analysis．The temporal and spatial variation in structural temperature of suspension bridges can be well reproduced by heat transfer finite element analysis．As temperature increases，the mid-span of the main-span deck moves downwards while both towers deflect towards the central span．Both the girder mid-span vertical displacement and the tower-top horizontal movement are dominated by the main cable temperature changes． In-depth insights into the temperature-related behaviors of long-span suspension bridges during operation were provided and easy-to-use formulas to estimate the thermal deformations were offered． © 2022 Huazhong University of Science and Technology. All rights reserved.
引用
收藏
页码：117 / 123
页数：6
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