地震动持时对工程结构地震反应影响研究进展  

State-of-the-art review for the influence of strong ground motion duration on structural seismic response

作　　者：公茂盛[1] 左占宣[1] 赵一男 贾佳 GONG Maosheng;ZUO Zhanxuan;ZHAO Yinan;JIA Jia(Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Key Laboratory of Earthquake Disaster Mitigation,Ministry of Emergency Management,Harbin 150080,China)

机构地区：[1]中国地震局工程力学研究所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,黑龙江哈尔滨150080

出　　处：《世界地震工程》2023年第3期142-153,共12页World Earthquake Engineering

基　　金：国家自然科学基金项目(52178514);中国地震局工程力学研究所基本科研业务费专项项目(2021EEEVL0301)。

摘　　要：地震动工程特性由幅值、频谱与持时三大要素决定,三个要素共同决定了地震动对工程结构破坏作用,工程结构抗震设计与评估等应全面考虑三个要素综合影响。目前来看:关于幅值及频谱的研究成果已广泛应用于各类工程抗震设计与评估,但关于地震动持时这一要素,国内外至今尚无明确的考虑方式和相应设计与评估技术,或考虑相对笼统。部分规范仅在结构地震反应时程分析方面做出了简单规定,尤其是用于确定地震荷载的抗震设计谱,几乎没有反映地震动持时对结构的影响,这远远不能满足性态及韧性等先进抗震方法对地震动作用的迫切需求。因此,关于地震动持时特性及其对工程结构地震反应影响的研究,近期成为一个热门研究课题。本文主要回顾和评述了地震动持时对工程结构地震影响的研究进展,并根据国内外研究现状对地震动持时研究进行了展望,可供分析地震动工程特性及其对结构的影响参考。The engineering characteristics of strong ground motion are described by the amplitude,frequency contents and duration.The three factors determine the destructive effects for engineering structures.The influence of the three factors should be comprehensively considered in the structural seismic design and evaluation.At present,the research results about the amplitude and frequency contents have been widely used in the seismic design and evaluation of structures.However,as one of the main factors of strong ground motion,the duration is seldom considered and applied in the structural seismic design,evaluation,etc.,and seismic design codes only provide some simple specifications for input strong ground motion duration requirement for time-history analysis to condsier the effects of duration on structural seismic response.Especially,the seismic design spectra,which are used to determine the seismic design load,do not reflect the influence of duration on the structural seismic response.The situation is far from the needs of performance and resilience based seismic design.Therefore,the research on the characteristics of strong ground motion duration with its influence on the structural seismic response has been a hot research topic recently.This paper mainly reviews and comments on the research progress for the influence of strong ground motion duration on engineering structures according to the research status at home and abroad,and can be used as a reference for analyzing the engineering characteristics of strong ground motion and its influence on structures.

关 键 词：地震动 地震动特性 地震动持时 结构地震反应 地震反应分析 

分 类 号：P315.9[天文地球—地震学] U452.28[天文地球—固体地球物理学]