基于FEMA-P58方法的校园建筑地震经济损失预测案例分析  

EARTHQUAKE LOSS PREDICTION FOR CAMPUS BUILDINGS BASED ON FEMA-P58 METHOD: A CASE STUDY

作　　者：曾翔[1] 刘诗璇 许镇[3] 陆新征[1] 

机构地区：[1]清华大学土木工程系,北京100084 [2]清华大学人文学院外文系,北京100084 [3]北京科技大学土木工程系,北京100084

出　　处：《工程力学》2016年第B06期113-118,共6页Engineering Mechanics

基　　金：国家科技支撑计划课题项目(2013BAJ08B02);国家自然科学基金项目(51222804;51178249;51378299)

摘　　要：地震导致的建筑倒塌和人员死亡近年来得到了有效控制,但造成的经济损失却愈加严重。该文运用FEMA-P58建筑地震损失评价方法,进行建筑地震损失预测,以充分利用下一代性能化设计的优势。FEMA-P58方法所需要的各建筑的地震响应,通过基于多自由度集中质量剪切层(MCS)模型和弹塑性时程分析(THA)的建筑震害模拟来获得。以三栋典型建筑为例,进行了基于强度的地震损失预测,以说明该损失预测手段的实现过程。结果表明,在中震(PGA=0.2 g)、大震(PGA=0.4 g)作用下,建筑损失主要来自结构构件和墙体等位移敏感型非结构构件。Earthquake-induced building collapses and casualties have been effectively controlled in the last two decades. However, earthquake-induced economic losses have continued to rise. Following the objective and procedure of next-generation performance-based seismic design, the economic loss prediction method proposed by FEMA-P58 （referred to as ＇the FEMA-P58 method＇ hereinafter） is introduced in this study. The building seismic responses needed by the FEMA-P58 method for loss prediction are obtained by using multi-story concentrated-mass shear （MCS） models and non-linear time-history analysis （THA）. A case study of three example buildings is performed to demonstrate the implementation of the proposed earthquake loss prediction method. The results show that when subjected to earthquakes of which the peak ground acceleration （PGA） are 0.2 g and 0.4 g, the earthquake loss mainly comes from repair costs of structural and drift-sensitive nonstructural components such as walls.

关 键 词：地震工程 经济损失预测 下一代性能化设计 FEMA-P58 结构地震响应分析 集中质量剪切层模型 

分 类 号：P315.9[天文地球—地震学]