摘要
结构易损性分析是地震灾害风险评估的重要环节之一,以嘉兴市区占比较大的砌体结构为例,选择适合的强度指标及损伤指标,采用增量动力分析方法,对多个地震动进行调幅,得到各个地震动强度作用下相应的结构响应结构并分析给出结构易损性曲线,最终分析得到嘉兴地区典型砌体结构易损性曲线。易损性分析结果显示嘉兴地区典型砌体结构可基本满足当地Ⅶ度抗震设防要求,在大震作用下,结构发生倒塌的超越概率小于10%,表明结构具有良好的抗倒塌能力。研究结果可为浙江地区建筑的精细化地震灾害风险评估和风险防治提供理论依据。
Structural vulnerability analysis is one of the important aspects of earthquake disaster risk assessment.This paper took the masonry structure with a large proportion in Jiaxing City as an example,selected the appropriate strength index and damage index,and adopted the incremental dynamic analysis method.The amplitude modulation of multiple ground motions was carried out to obtain the corresponding structural response structures under the action of each ground motion intensity,and the structural vulnerability curves were analyzed.Finally,the vulnerability curves of typical masonry structures in Jiaxing City were analyzed.The results of vulnerability analysis show that the typical masonry structure in Jiaxing City can basically meet the local Ⅶ seismic fortification requirements,and the exceedance probability of collapse of the structure is less than 10%under a large earthquake,indicating that the structure has good anti-collapse ability.The research results can provide a theoretical basis for the refined seismic disaster risk assessment and risk prevention of buildings in Zhejiang Province.
作者
顾泺怡
陆吉赟
余刚群
朱奕非
陈涛
GU Luoyi;LU Jiyun;YU Gangqun;ZHU Yifei;CHEN Tao(Zhejiang Earthquake Agency,Hangzhou 310013,China)
出处
《华南地震》
2025年第2期108-116,共9页
South China Journal of Seismology
基金
浙江省地震局科研项目(2023zjj07,2023zjj03)。
关键词
地震易损性
砌体结构
层间位移角
Seismic vulnerability
Masonry structures
Interstory displacement angle
