建筑结构学报2025，Vol.46Issue(7)：22-33,73,13.DOI:10.14006/j.jzjgxb.2024.0533
基于地震动强度随机场的同济大学校园建筑群损失概率评估
Probabilistic seismic loss assessment of Tongji University campus buildings based on intensity measure random fields
摘要
Abstract
Seismic loss probability assessment of building portfolios is critical for quantifying urban extreme earthquake risks and supporting resilience evaluation and planning.The ground motion intensity measure field-based assessment framework provides an initial framework for incorporating the spatial correlation of seismic performance across buildings.However,the current approach relies on simplified inter-story shear models and assumes an idealized uniform distribution of buildings,which limits its ability to accurately capture the characteristics of extreme seismic losses in real urban environments.To address this,this study introduced detailed 3D building models and simulates damage at both structural and nonstructural component level.A case study was conducted on a building portfolio on Tongji University's Siping campus,comprising five building types:brick masonry,reinforced concrete core,brick-wood,concrete frame,and concrete-filled steel tube.Results show that when structural types and scales vary significantly,extreme loss is dominated by key buildings and spatial correlation can be neglected;for homogeneous portfolios,neglecting correlation may underestimate the 95th-percentile loss by up to 15％.The findings quantify the influence of seismic performance correlation on regional loss distributions and provide insights for resilient urban planning.关键词
建筑群/地震损失/抗震韧性/地震动强度随机场/抗震性能空间相关性Key words
building portfolios/seismic loss/seismic resilience/seismic intensity random field/spatial correlation of seismic performances分类
天文与地球科学引用本文复制引用
游田,周绪红,刘怡岑,如意,柯珂..基于地震动强度随机场的同济大学校园建筑群损失概率评估[J].建筑结构学报,2025,46(7):22-33,73,13.基金项目
国家重点研发计划(2023YFC3805002),国家自然科学基金项目(52322802). （2023YFC3805002）
