带斜筋单排配筋混凝土低矮剪力墙有限元模拟  

Finite element simulation of low-rise concrete shear wall with single row of steel bars and inclined reinforcements

作　　者：李琬荻 Li Wandi(China Railway Design Corporation,Tianjin 300308,China)

机构地区：[1]中国铁路设计集团有限公司,天津300308

出　　处：《建筑结构》2020年第3期89-95,共7页Building Structure

基　　金：国家自然科学基金项目(51408378);河北省自然科学基金资助项目(E2015403018)。

摘　　要：为了研究带斜筋单排配筋混凝土低矮剪力墙的抗震性能,首先利用ABAQUS有限元软件建立了带斜筋单排配筋混凝土低矮剪力墙的弹塑性有限元模型,验证了模型的正确性;随后,对9个带斜筋的剪力墙进行了拓展分析,讨论了墙体配筋率、边缘构件配筋及轴压比对带斜筋单排配筋混凝土低矮剪力墙抗震性能的影响。结果表明:墙体配筋率的增加可提高承载力,斜筋呈扇形布置墙体延性较好;边缘构造箍筋间距越大,承载力越低,且峰值荷载后承载力下降越明显,延性较差;随着轴压比的增大,斜筋对于剪力墙延性的提高作用越明显。In order to research seismic performance of low-rise concrete shear wall with single row of steel bars and inclined reinforcements, firstly the elastoplastic finite element models of low-rise concrete shear wall single row of steel bars and inclined reinforcements were established by utilizing finite element software ABAQUS. Accuracy of the models was verified. Then, 9 shear walls with inclined reinforcements were analyzed, and the influences of reinforcement ratio of wall, edge component reinforcement and axial compression ratio on the seismic performance of low-rise concrete shear wall with single row of steel bars and inclined reinforcements were discussed. The results show that the increase of shear wall reinforcement ratio can improve the bearing capacity. Ductility is better when the inclined reinforcements are fan-shaped arranged. The larger the spacing of the edge component structural stirrups is, the lower the bearing capacity is, the more obvious the decline of the bearing capacity after the peak load is, and the worse the ductility is. With the increase of the axial compression ratio, the effect of the inclined reinforcements on the increase effects of the ductility of the shear wall is more obviously.

关 键 词：单排配筋 斜筋 低矮剪力墙 有限元模拟 设计方法 

分 类 号：TU375[建筑科学—结构工程]