大跨度钢筋混凝土拱桥地震行波效应分析  

Traveling response analysis of large-span reinforced concrete arch bridge

作　　者：唐堂[1,2] 钱永久[1] 

机构地区：[1]西南交通大学土木学院,四川成都610031 [2]四川华腾公路试验检测有限责任公司,四川成都611730

出　　处：《地震工程与工程振动》2016年第2期111-116,共6页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(51178395);四川省交通运输厅公路局项目(2011-02)~~

摘　　要：为研究行波效应对大跨度钢筋混凝土拱桥地震响应的影响,以绵竹市金花大桥为工程实例,结合该桥实际震害。基于SAP2000建立金花大桥结构模型,采用汶川地震动分析了行波效应对金花大桥非线性地震响应的影响。结果表明:行波效应对金花大桥地震响应影响较大,特别是对拱肋拱脚截面和拱上短立柱影响显著,其计算结果与实际震害一致,对同类型桥梁的抗震评估提供了有益的参考。Taking Mianzhu Jinhua bridge as the example,combined with the bridge actual damage,the characteristics of traveling responses of the long-span arch bridge are studied. The nonlinear seismic performance of the bridge is analyzed on the basis of SAP2000 software using Wenchuan earthquake waves. The results show that traveling wave has great effect on seismic response of Jinhua Bridge,especially on the upper rib arch foot arch section and significantly shorter column,which is consistent with the calculation results of the actual damage,the same type of bridge seismic evaluation provides useful reference.

关 键 词：钢筋混凝土拱桥 震害 地震响应 行波效应 

分 类 号：U448.22[建筑科学—桥梁与隧道工程] TU37[交通运输工程—道路与铁道工程]