张家口地区农村房屋建筑特征和抗震能力评价

Features and Seismic Capacity Evaluation of Rural Houses in Zhangjiakou Area

基于河北省张家口市13个县(区)630个调查点的实地调查结果,总结了砖混、砖木、土木和土窑洞4类房屋的建筑特征和震害特征。采用专家经验法,结合历史地震资料和各类房屋比例,建立了该地区农村房屋抗震性能指数,并以县为单位,绘制了该地区农村抗震能力评价图。结果表明:张家口地区农村房屋以砖木结构和土木结构为主,占95%;砖混结构和土窑洞均不足3%;且不同地域的房屋结构类型差别很大。该地区农村房屋抗震能力整体较差,主要是由土木结构房屋的抗震性能较差所导致。

Based on the field survey results of 630 survey sites in 13 counties(districts)of Zhangjiakou City,Hebei Province,we summarize the houses characteristics and seismic damage of the four types of houses,such as brick-concrete,brick-wood,civil houses and loess cave dwellings. Combining historical seismic data and the proportion of various buildings,we established the aseismic performance index by the expert experience method,and drawed an evaluation map of seismic capacity of rural houses in the study area. The results show that the rural houses are dominated by brick-wood and soil-wood structures,the proportion of them account for 95%,while the proportion of brick-concrete structure and loess cave dwellings are less than 3%,and the house structures are different in different regions. The seismic capacity of the rural houses is low,because of the poor seismic performance of civil structure houses.