地震动与结构不确定性对建筑结构地震易损性的影响  

Effects of record-to-record variability and structural uncertainties on the seismic fragility of building structures

作　　者：王晓岳 曲哲[1,2] WANG Xiaoyue;QU Zhe(Key Laboratory of Earthquake Engineering and Engineering Vibration,Institute of Engineering Mechanics,China Earthquake Administration,Harbin,Heilongjiang 150080,China;Key Laboratory of Earthquake Disaster Mitigation,Ministry of Emergency Management,Sanhe,Hebei 065201,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,黑龙江哈尔滨150080 [2]地震灾害防治应急管理部重点实验室,河北三河065201

出　　处：《河北工业大学学报》2025年第1期94-100,共7页Journal of Hebei University of Technology

基　　金：国家自然科学基金优秀青年科学基金资助项目(52122811)。

摘　　要：各种消能减震结构体系固然可以有效控制损伤机制从而提高建筑结构的抗震性能,但仍受地震动和结构不确定性的显著影响。本文使用概率密度演化方法,比较了基础隔震和铰支墙-框架结构体系与传统的延性受弯框架结构体系的地震易损性,着重考察地震动和结构不确定性对其的影响。通过对不同结构体系进行易损性分析,验证了基础隔震和铰支墙-框架结构体系可显著提升建筑结构抗震性能的能力,并探讨不同结构体系的抗震性能对于地震动和结构不确定性的敏感性及其内在机理。Although various seismic systems can improve the seismic performance of building structures by controlling the damage mechanisms,they are still significantly affected by the record-to-record variability in earthquake ground motions and structural uncertainties.This study employed the probability density evolution method to compare the seismic fragility of base-isolated and pin-supported wall-frame structures with traditional ductile moment-resisting frame structures,focusing on the effects of record-to-record variability and structural uncertainties.The fragility analysis shows that base isolation and pin-supported wall systems can significantly enhance the seismic performance of building structures.The discussion also addresses the sensitivity of different seismic systems to the record-to-record variability and structural uncertainties,and the underlying mechanisms.

关 键 词：建筑地震损伤控制 概率密度演化方法 失效概率 基础隔震 铰支墙-框架结构 

分 类 号：TU352.1[建筑科学—结构工程]