Seismic behavior of asymmetric extradosed bridge with action of traveling wave effect

被引：0
|
作者：
Pan S. [1 ]
Tang M. [1 ]
Song X. [1 ]
机构：
[1] School of Civil Engineering, Central South University, Changsha
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2020年 / 51卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Asymmetric structure; Damage coefficient; Extradosed bridge; Hysteretic energy consumption; LMM; Traveling wave effect;
D O I：
10.11817/j.issn.1672-7207.2020.07.012
中图分类号：
学科分类号：
摘要：
In order to explore the anti-seismic performance of extradosed bridges designed with asymmetrical structures, Midas Civil software was used to establish a finite element model of asymmetrical extradosed bridge based on an actual bridge construction. Traveling wave effect was simulated relying on large-mass method(LMM), and the internal force and displacement response to ground motion were analyzed. Combined with the energy method to calculate hysteretic energy consumption and damage coefficient, the influence of traveling wave effect on the near-wave source bridge tower and ductile earthquake resistance was studied. The results show that the asymmetrical extradosed bridge has the most significant response to the internal force of the middle pier during different earthquakes; the traveling wave effect will weaken the bend and shear bearing capacity of the bottom of the side tower, and different traveling wave excitations have a great influence on the displacement of the middle tower along the bridge. Combined with the law of stress, the hidden danger of the middle pier will be caused during anti-earthquake design if only the consistent excitation is consiclered, as the asymmetry of the bridge span increases, and the stress on the side pier should be considered. © 2020, Central South University Press. All right reserved.
引用
收藏
页码：1862 / 1872
页数：10
相关论文
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