Selection and modification of ground motion records using Newmark-Hall spectrum as target spectrum for long-period structures

作     者：Fu Jianyu Wang Dongsheng Zhang Rui Chen Xiaoyu Fu Jianyu;Wang Dongsheng;Zhang Rui;Chen Xiaoyu

作者机构：School of Civil and Transportation EngineeringHebei University of TechnologyTianjin 300401China School of Civil EngineeringDalian Jiaotong UniversityDalian 116028China Institute of Road and Bridge EngineeringDalian Maritime UniversityDalian 116026China 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2023年第22卷第1期

页      面：117-134页

核心收录：

学科分类：070801[理学-固体地球物理学] 07[理学] 0708[理学-地球物理学] 

基　　金：National Natural Science Foundation of Hebei Province under Grant No.E2020202038 the National Natural Science Foundation of China under Grant No.51778206 

主　　题：time-history analysis selection and modification of ground motions target spectrum Newmark-Hall spectrum steel moment resisting frame structure 

摘      要：Input ground motions have significant impacts on the uncertainty of structural responses in time-history *** this study,records were selected and scaled for the evaluation of mean structural responses according to the target *** Newmark-Hall spectrum is closely related to seismic response of short,medium and long-period structures,so it was taken as the target spectrum *** nonlinear time-history analyses of 9-story and 20-story steel moment-resisting frame structures were carried out as *** represent medium and long-period buildings,*** target spectra with risk of 50%,10%and 2%probabilities for exceedance in 50 years were calculated by the average Newmark-Hall spectrum method for three ground motion sets developed in the SAC Steel *** predicted structural mean responses of these Newmark-Hall spectra were compared with those calculated by the average spectral acceleration method for the same record *** is found that both methods have similar accuracy for estimating the structural mean ***,the method proposed herein is more effective in reducing the variability of the structural ***,the proposed method is more advantageous for the time-history analysis of long-period structures or structures with more severe nonlinear responses under strong seismic excitations.