Seismic performance study along the transverse direction of cable-stayed bridges with self-centering energy dissipation braces

被引：0

作者：

Xu L.-H. ^{[1
]}

Wu H. ^{[1
]}

机构：

[1] School of Civil Engineering, Beijing Jiaotong University, Beijing

来源：

Gongcheng Lixue/Engineering Mechanics | 2019年 / 36卷 / 04期

关键词：

Cable-stayed bridge; Pre-pressed spring self-centering energy dissipation brace; Seismic mitigation design; Seismic performance; Transverse direction;

D O I：

10.6052/j.issn.1000-4750.2018.03.0107

中图分类号：

学科分类号：

摘要：

To mitigate the seismic-induced responses of cable-stayed bridges in thetransverse direction, a transverse seismic mitigation system of cable-stayed bridges with pre-pressed spring self-centering energy dissipation braces was proposed in this study. A parameter design method for the braces was developed. Taking a cable-stayed bridge as the study example, the brace parameters were designedandthe time history analysis of the tower-beam fixed system and the seismic mitigation system with braces were carried out. The seismic performance of the braced systems was analyzed in terms of theseismic responsesatkey locations, the energy dissipation capabilities, etc. The results show that the seismic mitigation system of the cable-stayed bridge with pre-pressed spring self-centering energy dissipation braces in the transverse direction utilizes the good hysteretic energy dissipation characteristics of the braces to reduce the displacement and strain of the bridge tower, improve the force distribution of the bridge tower and reduce the residual displacement of the beam. Cable-stayed bridges with pre-pressed spring self-centering energy dissipation braces has good mitigation and control effects on the seismic responses, which is a prominent and promising seismic resistance system. © 2019, Engineering Mechanics Press. All right reserved.

引用

页码：177 / 187

页数：10

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