大跨度双塔斜拉桥地震响应分析方法研究

英文篇名：Study on analysis methods for seismic response of long span cable-stayed bridge with twin towers
中文刊名：福州大学学报(自然科学版)
英文刊名：Journal of Fuzhou University(Natural Science Edition)
作者：巫生平 ; 房贞政 ; 王庆栋
英文作者：WU Sheng-ping1 ; FANG Zhen-zheng1 ; WANG Qing-dong2(1.College of Civil Engineering ; Fuzhou University ; Fuzhou ; Fujian 350116 ; China ; 2.AECOM Consultant(Shenzhen) Co Ltd ; Shenzhen ; Guangdong 518001 ; China)
中文关键词：斜拉桥 ; 反应谱 ; 时程分析 ; 功率谱 ; 地震响应
英文关键词：cable-stayed bridge ; response spectrum ; time history analysis ; power spectrum ; seismic response
出版日期：2013-08-28
机构：福州大学土木工程学院;艾奕康咨询(深圳)有限公司;
年：2013
期：04
出版单位：福州大学学报(自然科学版)

摘要

以某主跨为416 m的双塔斜拉桥为工程背景,选取2条人工波和2条天然波,分别采用反应谱法、时程分析法和功率谱法进行地震响应分析.分析结果表明:在人工地震波作用下,三种方法计算得到的主梁和主塔地震响应基本一致;在天然地震波作用下,主梁和主塔的反应谱分析结果介于其它两种方法之间.对斜拉索而言,时程分析结果与其它两种方法计算结果有较大差别.因此,可选择反应谱法对主梁和主塔进行地震响应分析;选择时程分析法对斜拉索进行地震响应分析.
In this paper,a practical project is taken as research background which is double pylon cable-stayed bridge with main span of 416 m.Two artificial seismic waves and two seismic records were selected to analyze the seismic behaviors by the response spectrum method,time history analysis method and power spectrum method.The result shows that seismic responses of the girder and main tower are basically identical under the effect of artificial seismic wave.The response spectrum analysis results of them are between the other two methods under the effect of the natural seismic wave.For stay cable,time history analysis results has great difference compared with other two methods’ results.Therefore,researchers can choose response spectrum method to analyze seismic response of girder and tower,and time history analysis method for stay-cables.

引文

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