砌体结构非承重窗间墙地震破坏响应分析

Earthquake damage response analysis of masonry structure non-load-bearing wall pier

砌体结构非承重墙在地震力作用下,因竖向压力较小导致主拉应力较大而首先会发生破坏。利用ANSYS软件建立3组砌体墙模型,通过瞬态分析法模拟了砌体墙在地震作用下的开裂压碎情况,讨论了非承重墙体高宽比、窗间墙同窗下墙的宽高比、等效刚度比等因素对砌体结构窗间墙破坏趋势的影响。分析结果表明:墙体的高宽比,窗间墙同窗下墙的宽高比,等效刚度比等因素对窗间墙破坏均有不同程度的影响。

Non-load-bearing walls of masonry structures under earthquake loading may destruct firstly because of the large principal tensile stress under small vertical pressure.Three masonry wall models were established by software ANSYS,and cracking crushed situation of masonry wall under seismic action was simulated by transient analysis.The failure trend of the masonry structure wall pier affected by aspect ratio of non-load-bearing walls,the aspect ratio of the wall pier and spandrel wall,equivalent stiffness ratio etc.was discussed.The results show that there are some influence on the destruction of wall tier from the aspect ratio of wall pier and spandrel wall and equivalent stiffness ratio.