拟地震动多点激励在超长结构响应中的应用

英文篇名：Application of Artificial Ground Motion for Long Span Structure Under Multi-Support Excitations
中文刊名：北京建筑工程学院学报
英文刊名：Journal of Beijing University of Civil Engineering and Architecture
作者：王孟鸿 ; 宋飞达 ; 姬晨濛 ; 何远营
英文作者：Wang Menghong ; Song Feida ; Ji Chenmeng ; He Yuanying(School of Civil and Traffic Engineering ; Beijing University of Civil Engineering and Architecture ; Beijing 100044)
中文关键词：功率谱 ; 拟地震动 ; 多点激励 ; 超长结构
英文关键词：power spectrum ; artificial ground motion ; multi-support excitations ; long span structure
出版日期：2013-06-30
机构：北京建筑大学土木与交通工程学院;
年：2013
期：02
出版单位：北京建筑工程学院学报

摘要

为了研究行波效应与波的相干效应对超长结构的影响,用拟地震动合成的方法对超长结构支座激励采用不同的拟地震动.在运用随机理论中最大估计法保证所拟合地震波精度的条件下,分析该土层分布与场地位置对拟地震动的影响.用大刚度法对某双层柱面网壳结构进行多点激励计算和反应谱计算,比较该两种方法计算的杆件内力.结果显示多点输入对支座和跨中处的弦杆影响较大.
In order to analyze the impact of the wave's incoherence effect and traveling wave effect,a long span structure using artificial ground motions at different supports is calculated under multi-support excitations.To ensure the precision of the result,maximum estimation of random vibration theory is used.The influence of soil distribution and site location are analyzed for ground motion.In this paper,double layers cylindrical reticulated shell is calculated under multi-support excitations and respond spectrum calculation through the method of rigidity.After that,the element forces of the two methods are compared in this paper.The result reveals that the effect is greater at chord member of supports and mid-span.

引文

[1]杨庆山,刘文华,田玉基.国家体育场在多点激励作用下的地震反应分析[J].土木工程学报,2008,41(2):35-41
    [2]李英民,刘立平.工程结构的设计地震动[M].北京:科学出版社,2011:174-189
    [3]欧进萍,牛荻涛,杜修力.设计用随机地震动的模型及其参数确定[J].地震工程与工程振动,1991,11(3):45-53
    [4]陈国兴,金永彬,宰金珉.高层建筑随机地震反应的简捷计算[J].南京建筑工程学院学报,1999,1(48):29-37
    [5]Kiureghian A D,Neuenhofer A.Response spectrummethod for multi-support seismic excitations[J].EESD,1992(21):713-740
    [6]胡聿贤.地震工程学[M].北京:地震出版社,2006:39-43
    [7]Hao H,Duan X N.Seismic response of asymmetricstructure to multiple ground motions[J].Journal ofStructural Engineering,ASCE,1995,121(11):1557-1564