利用遥感影像和经验估计方法初判云南省建水县房屋抗震能力

房屋建筑破坏是地震中导致人员伤亡的主要因素,在未取得房屋详细风险调查数据的过渡时期,综合房屋结构和用途的实测资料、农危改和异地搬迁统计资料以及不同用途的房屋在影像上的几何特征和空间特征,提出了云南地区基于遥感影像和经验估计方法的房屋抗震能力等级初判方法,并在建水县开展试点应用。结果表明:建水县房屋估计抗震能力达标等级占比为8%,疑似抗震能力不足等级占比为88%,疑似抗震能力严重不足等级占比为4%。

Preliminary Assessment of the Seismic Capacity of Buildings in Jianshui County,Yunnan Province Based on Remote-sensing Images and the Empirical-estimation Method

Buildings'damage is one of the main factors leading to casualties in the earthquake disaster.So far,the detailed risk survey data of the buildings in Yunnan Province have not obtained yet.We firstly analyzed the data on the structure and functions of the buildings,statistical data on rural dilapidated house renovation project and peoples'relocation from inhospitable areas,as well as the geometric and spatial features of the houses for different purposes on image.Then we proposed a preliminary method to judge degree of the buildings'seismic capacity in Yunnan based on remote-sensing images and empirical estimation,and we applied our method to the buildings in Jianshui County,Yunnan Province.The results prove that the houses with qualified seismic capacity account for 8%,the houses with indequate seismic capacity account for 88%,and the ones with grossly inaadequate seismic capacity account for 4%.