浅析填充墙竖向不规则布置对RC框架结构的地震损伤影响

Analysis of the RC frame structure's seismic damage impact of infilled wall's irregular arrangements

从地震损伤的角度探讨了4种填充墙竖向不规则布置方式对框架结构抗震性能的影响。通过建立填充墙框架结构协同工作模型,对其进行地震作用下的损伤分析,研究和对比了各模型梁和柱的损伤情况。结果表明,填充墙不仅能以其破坏来减少结构的损伤,而且对在沿房屋高度方向产生刚度突变的楼层的损伤指数有着较大的影响,尤其是结构的薄弱层和顶层。笔者建议,工程设计人员应慎重处理填充墙在竖直方向不规则布置的方式,尽可能减小结构的地震损伤。

The frame structure＇s impact of four kinds of infilled wall＇s vertical irregular arrangements is disscused in this paper from the perspective of the seismic damage.Through establishing collaborative working models of the infilled frame structure to make damage analysis under earthquake action,then research and compare the damage situation of each model.The results show that infilled wall can not only make use of its own destruction to reduce structure＇s damage,but also have a great influence on damage index of layer which produced stiffness mutation along the directon of building＇s height,especially the weak layer and the top layer of the structure.The author suggests the engineering designers that the way of irregular arrangement in the vertical direction of the infilled wall should be handled with great care,minimize structure＇s seismic damage as uniform as possible.