铁道标准设计2017，Vol.61Issue(5)：82-86,5.DOI:10.13238/j.issn.1004-2954.2017.05.018
城市轨道交通桥梁抗震设计与研究
Seismic Design and Research of Urban Rail Transit Bridge
李靖1
作者信息
- 1. 中铁第四勘察设计院集团有限公司,武汉 430063
- 折叠
摘要
Abstract
Based on the urban rail transit design and relevant specifications, this paper studies the rail transit bridge seismic design in the light of the principle of energy conversion.The results conclude that reducing the stiffness of the structural system and increasing the energy output is an effective way to reduce the structural seismic response.Structural system stiffness can be effectively reduced by controlling the size of the structure and mounting plastic hinge and seismic isolation bearing.The energy output can be increased by placing high damping bearing and shock proof block.The actual earthquake damages show that it is hardly possible to get accurate structural response value and difficult to understand the structure internal force and deformation characteristics simply by seismic calculation in case of rare earthquakes.According to the failure mechanism of the bridge, concept design should be prioritized to achieve the structural seismic performances in case of rare earthquake.关键词
城市轨道交通/桥梁/能量转换原理/地震动响应/罕遇地震/抗震性能目标Key words
Urban rail transit/Bridge/Principle of energy conversion/Ground motion response/Rare earthquake/Seismic performance objective分类
交通工程引用本文复制引用
李靖..城市轨道交通桥梁抗震设计与研究[J].铁道标准设计,2017,61(5):82-86,5.
