偏心受拉钢筋混凝土剪力墙受剪性能试验研究  

Experimental study on shear behavior of reinforced concrete shear walls under eccentric tension

作　　者：姚正钦 方小丹[2,3] 韦宏 YAO Zhengqin;FANG Xiaodan;WEI Hong(Office of Infrastructure,Guangdong University of Technology,Guangzhou 510006,China;State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510641,China;Architecture Design Research Institute,South China University of Technology,Guangzhou 510641,China)

机构地区：[1]广东工业大学基建处,广东广州510006 [2]华南理工大学亚热带建筑科学国家重点实验室,广东广州510641 [3]华南理工大学建筑设计研究院有限公司,广东广州510641

出　　处：《建筑结构学报》2020年第4期71-81,共11页Journal of Building Structures

基　　金：华南理工大学亚热带建筑科学国家重点实验室项目(2013ZA02)。

摘　　要：对4个偏心受拉钢筋混凝土剪力墙试件进行了静力试验研究,研究发现:对于小剪跨比试件,轴拉力可以改善试件延性,同时降低剪力墙的受剪承载力和侧向刚度;提高剪力墙中的竖向分布钢筋配筋率可提高偏心受拉剪力墙的斜截面受剪承载力。GB 50010-2010《混凝土结构设计规范》中偏心受拉剪力墙斜截面受剪承载力计算公式可满足工程设计安全要求,但是该公式中未考虑竖向分布钢筋的贡献,对于竖向分布钢筋配筋率较高的剪力墙计算结果偏保守。提出了考虑竖向分布钢筋贡献的偏心受拉剪力墙斜截面受剪承载力计算式,同时,提出了偏心受拉剪力墙的设计建议,以期为实际工程设计提供参考。Four specimens of reinforced concrete shear wall under eccentric tension were tested. It is found that axial tension can improve the ductility of specimens with small shear-span ratios,and reduce the shear capacity and lateral stiffness of shear walls. In addition,increasing the ratio of vertical distributed reinforcement in shear walls can improve the shear capacity of inclined section of eccentrically tensioned shear walls. The formula in the GB 50010-2010‘Code for design of concrete structures’ for calculating the shear capacity of inclined section of shear walls under eccentric tension can meet the safety requirements of engineering design,but the formula does not consider the contribution of vertical reinforcement,so it is conservative for the shear wall with a high ratio of vertical reinforcement.A formula for calculating the shear capacity of inclined section of eccentrically tensioned shear walls,which takes into consideration the contribution of vertical reinforcement, is presented. Design recommendations for eccentrically tensioned shear walls are proposed,which can be used as a reference for practical engineering design.

关 键 词：钢筋混凝土剪力墙 偏心受拉 静力试验 斜截面受剪承载力 

分 类 号：TU973.17[建筑科学—结构工程] TU317.1