建筑结构学报2025，Vol.46Issue(7)：1-11,11.DOI:10.14006/j.jzjgxb.2024.0508
基于实测信息的既有多龄期建筑群地震灾害损失风险快速评估
Rapid assessment of seismic disaster loss risks for existing multi-age buildings based on measured data
摘要
Abstract
The rapid assessment of earthquake disaster losses for multi-age buildings is crucial for pre-earthquake rescue preparation,post-earthquake emergency response,and socio-economic recovery.Considering the potential degradation of existing buildings during their service life,this paper proposed a rapid assessment method for seismic disaster loss risks for multi-age buildings based on measured data.The method integrated on-site measured dynamic characteristics of multi-age buildings,combined with HAZUS recommended nonlinear performance parameters,to construct equivalent models for existing buildings,and time-history analyses generated a large dataset to assess seismic fragility.Considering the target area's seismic fragility,earthquake timing,population density,and replacement costs,the method rapidly evaluated risks of casualties and economic losses across various earthquake levels.The proposed methodology was applied to existing reinforced concrete building clusters in Xunchang Town,Gong County,Yibin City,Sichuan Province.The results showe that under frequent and fortification earthquakes,the buildings generally do not reach the bearing capacity limit,while under rare earthquakes,some buildings enter the performance degradation stage.The assessment results for casualties and economic losses show an exponential increase with the intensity of the earthquake,with casualty numbers being sensitive to the earthquake occurrence time,and building damage being the primary source of direct economic losses.关键词
既有多龄期建筑群/地震灾害损失/快速评估/动力测试/地震易损性Key words
existing multi-age buildings/earthquake disaster loss/rapid evaluation/dynamic test/seismic fragility分类
建筑与水利引用本文复制引用
单伽锃,蔡轩,黄晨宇,余桦,张翼..基于实测信息的既有多龄期建筑群地震灾害损失风险快速评估[J].建筑结构学报,2025,46(7):1-11,11.基金项目
国家自然科学基金项目(52278312,52422810),中央高校基本科研业务费专项资金资助(22120250133). （52278312,52422810）
