Equivalent Response Estimation of Structural Systems Subjected to Long-Period Ground Motion  

作　　者：徐龙军 李宁 谢玉见 谢礼立 

机构地区：[1]Department of Civil Engineering, Harbin Institute of Technology at Weihai [2]Key Laboratory of Coastal Civil Engineering Structure and Safety(Tianjin University), Ministry of Education

出　　处：《Transactions of Tianjin University》2013年第5期356-365,共10页天津大学学报（英文版）

基　　金：Supported by Major Research Plan of National Natural Science Foundation of China(No.91215301);National Natural Science Foundation of China(No.51238012,No.51178152,No.51008208);the Special Fund for Earthquake Scientific Research in the Public Interest(No.201208013)

摘　　要：Long-period ground motion has become an important consideration because of the increasing number of large and long-period structures.Therefore,a thorough investigation on the formation and characteristics of longperiod ground motion is desirable for engineering applications.In this work,an analytical study is performed to examine the effect of several parameters and the combining mode for equivalent harmonic components on the dynamic response of systems.The results of the work show that the harmonic components in equivalent ground motion are evidently influenced by the intensity rise time,duration,phase and combining mode.Moreover,the long-period ground motions are simplified and simulated by separate harmonic components through proper combination.The findings of the work are believed to be useful in the selection of input ground motion in structural seismic analysis.Long-period ground motion has become an important consideration because of the increasing number of large and long-period structures. Therefore, a thorough investigation on the formation and characteristics of longperiod ground motion is desirable for engineering applications. In this work, an analytical study is performed to examine the effect of several parameters and the combining mode for equivalent harmonic components on the dynamic response of systems. The results of the work show that the harmonic components in equivalent ground motion are evidently influenced by the intensity rise time, duration, phase and combining mode. Moreover, the long-period ground motions are simplified and simulated by separate harmonic components through proper combination. The findings of the work are believed to be useful in the selection of input ground motion in structural seismic analysis.

关 键 词：ground motion harmonic earthquake wave response spectrum normalized response spectrum component combining mode 

分 类 号：TU311.3[建筑科学—结构工程]