【摘要】 根据汶川地震中都江堰市建筑震害调查结果,对城市多龄期建筑楼梯间的典型震害进行了统计分析.给出了楼梯间震害的破坏等级划分标准,并按标准对都江堰市楼梯间的典型震害进行分类,在此基础上统计分析了该市楼梯间的震害情况,同时从设计规范、施工水平和施工缝留置3个方面对汶川地震中楼梯间震害原因进行了分析.结果表明:都江堰市多层砌体结构建筑楼梯间震害较其他结构类型破坏严重,毁坏比例达7.6%;不同龄期建筑中,2000年后建成并按新抗震规范设计的建筑,楼梯间震害较轻;由施工缝引起的楼梯间震害较为普遍,但正常施工的楼梯间震害较轻.更多还原

【Abstract】 Based on the field investigation of building seismic damage in Dujiangyan City after Wenchuan earthquake and taking Dujiangyan City as an example,a statistical analysis of the staircase seismic damage of multi-aged building in city is made herein.Division standard of failure grades of the staircase seismic damage is given and typical seismic damages of staircase in Dujiangyan City are classified according to the standard.Statistical analysis of the staircase seismic damage in the city is made on the basis of the above data,and a cause analysis of staircase seismic damage is also made from 3 aspects,which are design code,construction level and the setting of construction joint.The results show that in Dujiangyan City,the staircase seismic damage of the multistory masonry structure is relatively serious,and the proportion of destruction is 7.6%.Compared with the buildings at different ages,the staircase of the building which was constructed after the year 2000 and designed by new seismic code is damaged slightly.The seismic damage of staircase caused by construction joint exists commonly and it is slight if the staircase is constructed normatively.更多还原