日本福岛7.3级地震区域震害分析与对比  

Analysis and comparison of regional seismic damage in M 7.3 Japan Fukushima earthquake

作　　者：费一凡 陈星雨 程庆乐[1] 党纪 苏迪 陆新征[1] FEI Yifan;CHEN Xingyu;CHENG Qingle;DANG Ji;SU Di;LU Xinzheng(Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry,Department of Civil Engineering,Tsinghua University,Beijing 100084,China;Department of Civil and Environmental Engineering,Saitama University,Saitama 3388570,Japan;Bridge and Wind Engineering Laboratory,Department of Civil Engineering,The University of Tokyo,Tokyo 113-8656,Japan)

机构地区：[1]清华大学土木工程系,土木工程安全与耐久教育部重点试验室,北京100084 [2]埼玉大学理工学研究科环境社会设计学科,日本埼玉3388570 [3]东京大学土木工程系,桥梁与风工程研究室,日本东京113-8656

出　　处：《世界地震工程》2021年第2期31-37,共7页World Earthquake Engineering

基　　金：国家重点研发计划(No.2018YFC1504401);国家自然科学基金(No.U1709212)。

摘　　要：基于近实时区域震害评估系统RED-ACT,对2021年2月23日发生在日本福岛县东部海域的7.3级地震开展了震中附近区域的地面运动破坏力分析,包括典型强震记录分析、震中附近台站周围的建筑震损、人体感受和滑坡风险分析。基于实际震害调查结果,对比了RED-ACT系统、日本NIED-CRS系统和美国PAGER系统的震害评估结果准确性。结果表明:RED-ACT系统的评估结果与实际情况较为接近,能够为震后应急响应提供重要参考。Based on the near-real-time regional seismic damage assessment system,namely RED-ACT,we analyze the ground motion destructive power of an M7.3 earthquake in the area near the epicenter,which is located in the eastern seas of Fukushima,Japan.The typical strong motion records are analyzed.The building seismic damage,human uncomfortableness,and landslide risk near the strong motion stations are evaluated.Then,the accuracy of the evaluation results of RED-ACT,NIED-CRS of Japan,and PAGER of USA are compared based on the seismic damage investigation reports.The results show that the evaluation result of RED-ACT is relatively close to the actual situation and RED-ACT can provide an important reference for post-earthquake emergency response.

关 键 词：强震记录 地震破坏力 日本福岛7.3级地震 城市抗震弹塑性分析 RED-ACT 

分 类 号：P315[天文地球—地震学]