建筑结构学报2017，Vol.38Issue(3)：26-38,13.DOI:10.14006/j.jzjgxb.2017.03.003
钢筋套筒灌浆连接装配式剪力墙结构三层足尺模型子结构拟动力试验
Pseudo-dynamic substructure test on a 3-story full-scale model of prefabricated concrete shear wall structure with rebars splicing by grout sleeves
摘要
Abstract
To study the seismic behavior of the prefabricated concrete shear wall structure with rebars splicing by grout sleeves,pseudo-dynamic substructure test on a 3-story full-scale model was performed under the excitation of earthquake record.The cracks and damage phenomena of the test model were observed.Further analysis was conducted to investigate the seismic behavior,such as the hysteretic characteristic,deformation capacity,stiffness degradation and rebar yield order.The results indicate that cracks and damage of the test model center on the coupling beams and the window belly walls in the earthquake excitation direction,characterized by bending failure in the coupling beams,shear failure in the window belly walls and slight bending failure in the wall piers.The longitudinal rebars of coupling beams,the vertical rebars of wall piers and the stirrups of coupling beams yield in turn,which indicates that the design concepts'strong wall pier,weak coupling beam'and'strong shear,weak bending'of coupling beam are achieved.Under frequent earthquake,design earthquake and rare earthquake of seismic fortification intensities eight,and rare earthquake of seismic fortification intensity nine,the lateral stiffness of the test model decreases about 5％,20％,60％ and 80％,respectively,compared with the initial stiffness.The maximum inter story drift ratios are 1/3 341,1/899,1/268 and 1/111 respectively under the same load conditions,which shows that the damage extent of the test model is no damage,slight damage,moderate damage and collapse,respectively.Since the concrete superposition two-way floor slabs with rebars or no rebar protruding from precast bottom slab both are of good integrity and adequate in-plane stiffness,both types of superposition floor slab can be considered as a rigid diaphragm.It is feasible by using two U-shaped rebars to form a closed stirrup instead of the ordinary stirrup in the rectangular vertical post-casting section between two precast shear walls.The connection between inner wythe and outer wythe of the precast concrete sandwich insulation wall is reliable.As the outer wythe does not participate in bearing loads,the contribution of the outer wythe can be neglected in the structural design.关键词
装配式剪力墙结构/钢筋套筒灌浆连接/3层足尺模型/子结构拟动力试验/抗震性能Key words
prefabricated concrete shear wall structure/rebar splicing by grout sleeve/3-story full-scale model/pseudo-dynamic substructure test/seismic behavior分类
建筑与水利引用本文复制引用
钱稼茹,韩文龙,赵作周,秦珩,张芸,于劲,马涛,田东..钢筋套筒灌浆连接装配式剪力墙结构三层足尺模型子结构拟动力试验[J].建筑结构学报,2017,38(3):26-38,13.基金项目
北京市科技计划(Z10110602231003). （Z10110602231003）
