砖房抗震墙基准面积率分析

发布时间：2018-03-14 05:36

本文选题：砖砌体结构　切入点：抗震墙　出处：《建筑结构学报》2017年12期 　论文类型：期刊论文

【摘要】：砌体结构砖房抗震墙基准面积率是多层砖房进行抗震鉴定的重要参数,是确定房屋抗震减灾对策的依据。为了评价砖房抗震墙基准面积率取值的合理性,分析了砖房抗震墙基准面积率取值的影响因素及存在的不足,提出了砖墙构造柱率指标。结合抗震评估指标及判别准则,从地震震害的角度,对砖房抗震墙基准面积率的取值进行考察,提出了考虑砖墙的构造柱率指标和楼板类型不同的砖房抗震墙基准面积率的计算模型,为研究砖房抗震墙基准面积率提供了一条新途径。结合算例,比较了基于地震震害得到的砖房抗震墙基准面积率计算模型取值与现行抗震鉴定标准规定值间的差异,结果表明:预制楼盖且墙体内构造柱含量较少时,两者的基准面积率相接近;同等抗震能力下,楼层墙体内构造柱面积含量的增加可降低地震作用下砖房抗震墙基准面积率的取值。
[Abstract]:The reference area rate of masonry building seismic wall is an important parameter for seismic evaluation of multi-story brick building, and is the basis for determining the countermeasures of earthquake resistance and disaster reduction of building. In order to evaluate the rationality of reference area ratio of brick building seismic wall, This paper analyzes on the influencing factors and shortcomings of the reference area ratio of brick building seismic wall, puts forward the index of brick wall structure column ratio, and combines with the seismic evaluation index and discriminant criterion, from the point of view of earthquake damage, Based on the investigation of the reference area ratio of brick building seismic wall, a calculation model of reference area ratio of brick house seismic wall considering the index of brick wall construction column ratio and the type of floor slab is put forward. This paper provides a new way to study the reference area rate of brick building seismic wall. Combining with an example, the difference between the reference area ratio calculation model of brick building seismic wall based on earthquake damage and the current seismic identification standard is compared. The results show that when the content of prefabricated floor is small, the reference area ratio of the two is close, and under the same seismic capacity, The increase of the area content of the structural column in the floor wall can reduce the reference area ratio of the brick building seismic wall under the earthquake.
【作者单位】：西南交通大学土木工程学院;
【基金】：国家自然科学基金项目(51308473)
【分类号】：TU352.11;TU362

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