河北唐山4.5级地震震中附近地面运动破坏力分析  

Seismic Damage Assessment of Hebei Tangshan 4.5 Earthquake

作　　者：程庆乐 郑哲 赵鹏举 费一凡 陈星雨 陆新征[1] CHENG Qingle;ZHENG Zhe;ZHAO Pengju;FEI Yifan;CHEN Xingyu;LU Xinzheng(Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry,Department of Civil Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]木工程安全与耐久教育部重点试验室,清华大学土木工程系,北京100084

出　　处：《华北地震科学》2020年第2期78-84,共7页North China Earthquake Sciences

基　　金：国家重点研发计划(2018YFC1504401);山东省高校土木结构防灾减灾协同创新中心基金。

摘　　要：基于RED-ACT地震震害评估系统,对2019年12月5日发生在唐山市丰南区的4.5级地震震中附近地面运动的破坏力进行分析。包括:地震中典型强震记录的分析,典型强震记录作用下典型单体结构的动力响应和破坏情况分析,以及震中附近该次地震的破坏力分布和地震时人员加速度感受分布的评估。分析结果表明唐山4.5级地震破坏力较小,与实际震害基本一致。基于城市抗震弹塑性分析方法和密布强震台网的实时震害评估方法RED-ACT为震后应急提供了重要参考。Based on the Real-time Earthquake Damage Assessment using City-scale Time-history analysis(REDACT),the seismic damage assessment of the Hebei Tangshan M4.5 earthquake on December 5,2019,is performed in this work.Firstly,the peak ground accelerations(PGAs)and response spectra based on the typical records of strong ground motions are analyzed.Secondly,the seismic responses of typical individual structures are computed using the typical ground motion records.Finally,the building damage distribution and the human feeling distribution near to different stations are assessed.The results show that the destructive power of this earthquake is very limited,which is basically consistent with the actual filed investigation.Based on the City-scale Nonlinear Time-History Analysis and densely-distributed seismic network,the real-time seismic damage assessment method,RED-ACT can provide an important reference for post-earthquake emergency.

关 键 词：强震记录 地震破坏力 河北唐山4.5级地震 城市抗震弹塑性分析方法 RED-ACT 

分 类 号：P315.9[天文地球—地震学]