基于实地抽样调查的区域农村民居抗震性能评价  

Evaluation of Anti-seismic Performance of Regional Rural Dwellings Based on Field Sampling Investigation

作　　者：廖顺宝[1] 孙樾 李峰[1] 王艳萍[1] LIAO Shunbao;SUN Yue;LI Feng;WANG Yanping(Institute of Disaster Prevention,Beijing 101601)

机构地区：[1]防灾科技学院,北京101601

出　　处：《四川地震》2024年第3期1-7,共7页Earthquake Research in Sichuan

基　　金：中央高校基本科研业务费项目(ZY20180101)。

摘　　要：针对目前农村民居抗震性能研究主要面向单体房屋而非区域这一现状和不足,本文以四川省德阳市为研究区域,基于实地抽样调查数据、谷歌影像和影响农村民居抗震性能的其他相关数据建模,得到了一种乡镇区域尺度农村民居抗震性能指数的计算方法。具体方法为:(1)选取研究区6个县(市、区)119个乡镇中30个乡镇的代表性农村民居作为抽样调查点,进行逐户实地查看、现场仪器测量及询问当地村民。调查内容包括房屋结构类型、建造时有无采取抗震措施以及所处的场地条件等。(2)以抽样乡镇的人口密度、人均社会消费品零售总额为自变量,砖混结构房屋面积占比为因变量,构建农村民居砖混结构面积占比模型。(3)以抽样乡镇的砖混结构房屋面积占比、平均坡度、地质灾害点密度为自变量,农村民居抗震性能指数为因变量,构建农村民居抗震性能指数模型。(4)根据抗震性能指数模型计算整个研究区119个乡镇的抗震性能指数。计算结果显示:(1)构建的砖混结构面积占比模型和农村民居抗震性能指数模型均具有较高的精度。(2)研究区抗震性能计算结果直观反映了农村民居的抗震性能。相较于前人的工作,本文的方法大大减少了大面积调查所需的时间和经济成本。Considering that the current situation and the deficiency of the anti-seismic performance of rural residential buildings on single buildings rather than regions,we established models based on field survey data,Google images and other relevant data affecting seismic performance of rural residential buildings.We obtained calculation methods of anti-seismic performance index for rural residential buildings at a township scale at Deyang city in Sichuan province as a case study area.The specific methods are as follows:(1)30 townships within 119 townships in 6 districts(counties)were selected as the sampling survey points.The investigation methods included on-site inspection,on-site instrument measurement,and questioning on local villagers.The investigation contents included types of house structure,anti-seismic measures were/were not taken during construction and sites conditions.(2)The model of area proportion of brick-concrete structures in rural residential buildings was established based on the following aspects:population density and total retail sales of social consumer goods per capita in the sample townships,independent variables for the area proportion of brick-concrete structure houses.(3)An antiseismic performance index model of rural residential buildings was constructed with the area ratio of brick-concrete buildings,average slope,and independent variables for geological disaster point density in sample townships,and the anti-seismic performance index of rural residential buildings.(4)The anti-seismic performance index of 119 townships in the whole study area was calculated using the anti-seismic performance index model.The results show that:(1)the area proportion model of brick-concrete structure and the anti-seismic performance index model of rural residential buildings show a high accuracy.(2)The results calculated by the anti-seismic performance model can intuitively reflect the spatial distribution of the anti-seismic performance of rural residential buildings in the study area.Compared with previous

关 键 词：农村民居 抗震性能 抽样 调查 评价 德阳 

分 类 号：P315.94[天文地球—地震学]