市政技术2023，Vol.41Issue(12)：45-55,11.DOI:10.19922/j.1009-7767.2023.12.045
城市轨道交通高架桥抗震分析
Seismic Analysis of an Urban Rail Transit Viaduct
吴斐璠 1段丁丁 1王兴中 1李向杰1
作者信息
- 1. 北京建业通工程检测技术有限公司,北京 102600
- 折叠
摘要
Abstract
Taking an urban rail transit viaduct as an example,the content,methods and key points of seismic analy-sis of urban rail transit viaduct are proposed based on GB 50909-2014"Code for seismic design of urban rail transit structures".The finite element model of the bridge is established by Midas Civil software to analyze the seismic per-formance of the viaduct under different earthquakes.The analysis shows that the plastic hinge of the low pier pre-cedes the high pier under the longitudinal bridge earthquake.The plastic hinge of the high pier precedes the low pier under the transverse bridge earthquake;The normal stress of the main beam and the shear stress at the consolidation of the pier beam should be considered in addition to the seismic performance of the pier when seismic design is con-ducted;The reasonable arrangement of the tie beams of double-limb thin-wall pier can effectively improve the seis-mic performance of the bridge structure.The relevant conclusions provide important reference for the analysis and research of similar bridges.关键词
城市轨道交通高架桥/抗震分析/地震作用/动力特性分析/反应谱分析/时程反应分析/双肢薄壁墩Key words
urban rail transit viaduct/seismic analysis/earthquake action/dynamic characteristic analysis/response spectrum analysis/time history response analysis/double-limb thin-walled pier分类
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吴斐璠,段丁丁,王兴中,李向杰..城市轨道交通高架桥抗震分析[J].市政技术,2023,41(12):45-55,11.
