根据结构形式、构造措施、材料强度的差异,对西北地区典型农村房屋结构类型进行细分,并分别介绍了各类农村房屋的建筑特色、屋盖组成、分布区域等。通过计算各类农村房屋结构的平均震害指数,将西北地区典型农居抗震性能分为较好、中等、较差3个等级,分别对其抗震性能进行了评价。结果 表明:西北地区农村房屋可分为6大类、15小类,抗震性能较差的是土坯墙土木结构、石结构和泥浆砌筑砖木结构房屋,抗震性能中等的是夯土墙土木结构、砂浆砌筑砖木结构、土围护木架结构和老旧砖混结构房屋,抗震性能较好的是砖围护木架结构和新建砖混结构房屋。
According to the difference of structural form,structural measures and material strength,we subdivided the typical structure types of rural houses in Northwest China,and introduced the architectural characteristics,roof composition and distribution areas of various rural houses respectively. By calculating the average seismic damage index of various rural houses,we divided the seismic performance of typical rural houses in Northwest China into three grades such as the better,in general and poor,and evaluated their seismic performance respectively. The results show that the rural houses in Northwest China can be divided into 6 categories and 15 sub-categories. The poor ones include civil structure with rammed earth wall,the brick-wood building with mortar masonry,the wood frame construction with earth enclosure and old masonry-concrete structures is in general. The better ones is wood frame construction with brick enclosure wall and newly-built brick-concrete structure.
