地震一致激励计算方法的比较与分析  

Comparison and analysis of the calculation methods on the earthquake uniform excitation

作　　者：杨斌斌[1] 龙晓鸿[1] 樊剑[1] 李俊[1] 陈蓓蕾[1] 

机构地区：[1]华中科技大学土木工程与力学学院,控制结构湖北省重点实验室,湖北武汉430074

出　　处：《福州大学学报（自然科学版）》2013年第4期754-759,770,共7页Journal of Fuzhou University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51278213;51078166);中央高校基本科研业务专项资金资助项目(2011QN181)

摘　　要：首先介绍用于结构响应分析的两种输入模型,系统总结了用于地震激励分析的几种计算方法的优缺点、误差来源以及改进方法;在此基础上,以北盘江大桥为例,验证加速度输入、大质量法(LMM)和大刚度法(LSM)在一致激励分析中的一致性和可靠性,并总结各种方法的适用范围.算例结果表明:一致激励分析时,相对于LSM,LMM与直接加速度输入结果更为一致,具有更高可靠性.This paper introduces the two input models of structural response analysis and summarizes the advantages and disadvantages of several calculation methods used for seismic excitation analysis,sources of errors,as well as improved methods.On the basis,the Beipanjiang bridge,for example,is used to verify the consistency and reliability of the acceleration input,large mass method（LMM） and large stiffness method（LSM） in the analysis of uniform excitation,and we also summarizes the scope of the application of the various methods.The numerical result of the example shows that the outcome of LMM is more consistent with the direct acceleration input,with higher reliability relative to the LSM.

关 键 词：地震激励 大质量法 大刚度法 误差分析 

分 类 号：TU311.3[建筑科学—结构工程] TU352.1