Simplified aseismic calculation model for railway gravity bridge pier

被引：0
|
作者：
Lu J. [1 ]
Chen X. [1 ]
Ding M. [1 ]
Ma H. [1 ]
Zhang X. [1 ]
机构：
[1] School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2021年 / 40卷 / 09期
关键词：
Aseismic analysis; Low reinforcement; Railway gravity bridge pier; Simplified model;
D O I：
10.13465/j.cnki.jvs.2021.09.010
中图分类号：
学科分类号：
摘要：
Here, aiming at situations of only one main crack being formed at the bottom of a railway gravity bridge pier with low reinforcement, concrete at the bottom of the pier being not obviously crushed without plastic hinge area formed, and existing obvious rocking phenomenon under dynamic action, a simplified aseismic calculation model for this kind of bridge pier was proposed. It was shown that this model is a 4-spring one of the 2-spring model of a free swing bridge pier added 2 springs for a longitudinal steel bar only under tension. According to the model pier test results, stiffness values of springs only under tension were determined. The calculation results of the 4-spring model under static and dynamic actions were compared with the test ones. It was verified that the 4-spring aseismic analysis model can be used for simplified aseismic calculation of railway gravity bridge pier. © 2021, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：71 / 76
页数：5
相关论文
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