框架结构群体震害易损性快速评估研究  

Fast evaluation of seismic damage group vulnerability for a frame

作　　者：李静 陈健云[1] 温瑞智[2] 

机构地区：[1]大连理工大学建设工程学部,大连116020 [2]中国地震局工程力学研究所,哈尔滨150080

出　　处：《振动与冲击》2012年第7期99-103,共5页Journal of Vibration and Shock

基　　金：国家自然科学基金(50978043);地震行业科研专项(200808026);国家科技支撑计划项目(2006BAC13B02);大连理工大学基本科研业务专项基金(DUT10JR04)

摘　　要：钢筋混凝土框架结构作为城镇中使用最广泛的建筑之一,在汶川地震中不同使用用途框架表现的抗震能力差异较大,因此建议在地震震害评估中,应将结构按结构型式和使用用途进行分类。在此分类基础上,研究出一种简便实用的地震群体易损性分析方法,不需要了解结构详细力学参数,影响结构抗震能力的主要因素参数从房屋普查资料中即可获得,将模糊相似理论引入到群体易损性分析中,并与能力谱方法相结合应用于框架结构中,可在震后第一时间快速评估出不同使用用途的框架群体的震害情况,分析结果满足精度要求。最后,以某地区工业类框架结构为例,得到了该类框架结构的易损性矩阵,验证了方法的实用性和准确性。A reinforced concrete frame is used as one of the most common structures in cities and towns. Wen Chuan Earthquake showed that frames for different uses had great difference in a seismic capacity. So, it was suggested that structures should be classified in terms of their structural type and usage for their seismic damage evaluation. A group vulnerability analysis approach based on the classification was put forward. It didn＇t require to know the detailed mechanical parameters of all the structures. Fuzzy similarity theory was introduced in group vulnerability analysis. The latter was applied in frame structures combined with capacity spectrum method. With then, earthquake disaster of group structures could be evaluated rapidly and reliably. The results met accuracy requirement. Finally, a case study of industrial frames verified the feasibility and effectiveness of the proposed method. A vulnerability matrix of industrial frames group was obtained.

关 键 词：震害快速评估 群体易损性 模糊推理 相似度 能力谱法 框架 

分 类 号：TU375.4[建筑科学—结构工程]