基于监测台网加速度信号分析的上海周边区域地震影响评价  

Influence Evaluation of Earthquake in Surrounding Area of Shanghai by Analysis of Acceleration Signal of the Field-structure Seismological Array

作　　者：任晓崧[1] 任广震 王泽亚 宗刚 REN Xiaosong;REN Guangzhen;WANG Zeya;ZONG Gang(College of Civil Engineering,Tongji University,Shanghai 200092,China;State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学土木工程学院,上海200092 [2]同济大学土木工程防灾减灾全国重点实验室,上海200092

出　　处：《结构工程师》2024年第2期101-109,共9页Structural Engineers

基　　金：土木工程一类高峰学科建设经费资助。

摘　　要：2021年11月至2023年8月期间,上海市周边区域共发生了5次有感地震,分别为江苏盐城市大丰区海域5.0级、江苏常州市天宁区4.2级、黄海海域4.8级、上海市青浦区3.1级和山东德州市平原县5.5级地震,同济大学监测台网的4个测站捕获了这5次地震的场地和典型结构加速度信号,分析了各次地震作用下场地和典型结构的加速度信号的峰值及持时,探讨了各次地震信号的反应谱特征,对照设计反应谱曲线的第一特征段和第二特征段,对这5次周边区域地震对上海市的影响进行评价。During the period from November 2021 to August 2023,there were five sensible earthquakes in the surrounding areas of Shanghai with magnitudes of 5.0,4.2,4.8,3.1 and 5.5 respectively in the sea area of Dafeng District,Yancheng City of Jiangsu Province,Tianning District,Changzhou City of Jiangsu Province,the sea area of the Yellow Sea,Qingpu District,Shanghai and Pingyuan County,Dezhou City of Shandong Province.The corresponding acceleration signals of the fields and typical structures were captured by the seismological array of Tongji University.The peak ground acceleration of the field,the peak floor acceleration of the typical structure and the duration of seismic acceleration signal are analyzed.The response spectrum characteristics of the earthquake signal are studied.Comparing with the first and second characteristic section of the design response spectrum curve,the influence of the five surrounding earthquakes on Shanghai area is discussed.

关 键 词：上海周边区域 有感地震 场地加速度峰值 楼层加速度峰值 反应谱 

分 类 号：P315.9[天文地球—地震学]