基于已有地震的云南农居易损性矩阵分区研究  

Study on the Fragility Matrix of Rural Buildings in Different Zones of Yunnan Province Based on Existing Earthquake

作　　者：周洋[1] 明小娜[1] 杨健强[1] 卢永坤[1] ZHOU Yang;MING Xiaona;YANG Jianqiang;LU Yongkun(Yunnan Earthquake Agency,Kunming 650224,Yunnan,China)

机构地区：[1]云南省地震局,云南昆明650224

出　　处：《地震研究》2021年第2期283-291,共9页Journal of Seismological Research

基　　金：大中城市地震灾害情景构建重点专项项目(2017QJGJ05)资助。

摘　　要：建筑物易损性矩阵是震后房屋直接经济损失初评估的重要计算参数。根据地域特征,把云南地区分为滇东北、滇西—滇西北以及滇南—滇西南地区,基于1993—2017年57次破坏性地震的震害资料,运用基于已有震害数据的经验分析法和经验震害矩阵完善的方法构建不同分区云南农居易损性矩阵;再通过各类建筑破坏比概率和易损性指数分析不同建筑结构的抗震能力以及不同分区同类结构的抗震能力。结果表明:土木结构和砖木结构具有较大的区域差异,滇东北地区土木结构、砖木结构抗震能力最差;砖混结构、框架结构抗震能力区域差异不明显。The fragility matrix of buildings is an important calculation parameter for the initial evaluation and calculation of the direct economic loss of buildings after the earthquake.This paper analyzes the regional characteristics of Yunnan from the natural factors, social factors and ethnic customs, and Yunnan is divided three zones: Northeast, Northwest and Southwest.Based on the earthquake damage data in Yunnan Province from 1993 to 2017,used the experience analysis method and another method of making empirical earthquake damage matrix, fragility matrixes of each building structures of rural building in three regions are obtained.Based on the fragility matrix, calculated the probability of damage ratio curve and fragility index of each building structures, this paper analyzes the seismic capacity of different rural building structures and the seismic capacity of the same structure in different zones.The results show that: there are large regional differences between mud-wood structures and brick-wood structures, and the seismic capacity in Northeast Yunnan is the worst;the regional difference of seismic capacity of masonry structures and reinforced concrete structures is not obvious.

关 键 词：云南农居 地域特征 破坏比 易损性矩阵 

分 类 号：P315.94[天文地球—地震学]