主梁对桥墩地震响应的影响  

THE INFLUENCE OF MAIN GIRDER ON THE EARTHQUAKE RESPONSE OF THE BRIDGE PIER

作　　者：彭剑涛[1] 杨明福[1] 宁晓骏[1] 

机构地区：[1]昆明理工大学建筑工程学院,昆明650500

出　　处：《低温建筑技术》2015年第10期47-49,共3页Low Temperature Architecture Technology

基　　金：云南省自然科学基金(2009CD034)

摘　　要：对于地震中的桥梁结构来说,桥墩第一时间把地震振动作用传到主梁,同时桥墩也是桥梁结构中极易受损的构件,而主梁质量分布在地震作用下所产生的振动响应对桥墩造成了很大作用的影响。通过建立全桥计算模型和全桥中的单个桥墩计算模型,采用多振型反应谱分析方法,进行E1地震作用下的地震响应计算分析。研究表明质量大且分布密集的主梁通过支座限制了桥墩在地震作用下的摆动幅度,从而使得全桥下的桥墩墩底内力值比单个桥墩的内力值小很多。For the bridge structure in the earthquake,the earthquake sent the vibration to main girder at the first time,at the same time bridge pier is a damaged easily component,quality of the main girder distribution produced by the vibration response under seismic action have a lot of effects on the pier. By establishing the calculation model of the whole bridge and the calculation model of a single bridge pier,using the method of multi-modal response spectrum analysis,the seismic response analysis of E-1earthquake is carried out. The research shows that great quality and distribution-intensive girders through bearing restrict swing of bridge pier under earthquake,so as to make internal force value in the bottom of pier of the whole bridge pier is far less than a single bridge pier.

关 键 词：多振型反应谱 地震响应 质量分布 

分 类 号：TU311.3[建筑科学—结构工程]