基于盆地效应的抗震设防研究之若干进展  

Some advances in research on seismic fortification based on basin effect

作　　者：王冲[1,2] 齐文浩[1] 党鹏飞[3] 薄景山 WANG Chong;QI Wenhao;DANG Pengfei;BO Jingshan(Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Key Laboratory of Earthquake Disaster Mitigation,Ministry of Emergence Management,Harbin 150080,China;Geophysical Exploration Center,China Earthquake Administration,Zhengzhou 450002,China;School of Civil Engineering,Guangzhou University,Guangzhou 510006,China;Institute of Disaster Prevention,Sanhe 065201,China)

机构地区：[1]中国地震局工程力学研究所中国地震局地震工程与工程振动重点实验室,地震灾害防治应急管理部重点实验室,哈尔滨150080 [2]中国地震局地球物理勘探中心,郑州450002 [3]广州大学土木工程学院,广州510006 [4]防灾科技学院,三河065201

出　　处：《世界地震工程》2022年第3期221-235,共15页World Earthquake Engineering

基　　金：中国地震局工程力学研究所基本科研业务费专项资助项目(编号:2019B10)。

摘　　要：沉积盆地能够加重震害,在抗震设防中需要定量考虑盆地效应。本文叙述了盆地效应的主要表现形式以及对震害的影响;详细介绍了盆地效应的研究方法以及取得的研究成果,同时也指出了各个方法的优缺点;讨论了抗震设防中对盆地效应考虑的必要性;着重回顾和总结了当前在抗震设防中考虑盆地效应的两种方法:(1)在场地地震动预测模型中加入盆地基底埋深项。(2)求取盆地模型相对一维层状模型的附加放大因子,提出针对当前抗震设防规范中地震动参数的校正系数。最后指出开展盆地抗震设防研究面临的问题及工作展望。Sedimentary basins can aggravate earthquake damage,and the basin effect needs to be quantitatively considered in seismic fortification.This paper describes the main manifestations and the impact on earthquake damage of the basin effect;introduces the research methods of the basin effect and the research results obtained in detail,meanwhile points out the advantages and disadvantages of each method;discusses the necessity of considering the basin effect in seismic fortification;emphatically reviews and summarizes the current two methods to consider basin effect in seismic fortification,the methods are as follows.(1)add the burying depth term of the basin basement to the site attenuation relationship,(2)to obtain the aggravation factor which expresses the additional effect of the response at different locations along the basin with respect to the corresponding 1D response,and proposes correction coefficients for ground motion parameters of the current seismic fortification code.Finally,this paper points out the problems and prospects of the research on the seismic fortification of the basin.

关 键 词：盆地效应 地震动模拟 抗震设防 

分 类 号：P315.9[天文地球—地震学]