摘要
为了对比分析不同连接条件下预制建筑混凝土墙体的力学性能,文中设计了4种混凝土剪力墙,并对其进行静力加载试验,对比分析4种混凝土剪力墙的破坏模式、耗散能力及变形特性。结果表明,与现浇混凝土墙体相比,预制混凝土墙体的裂缝宽度相对较窄,但数量较多。现浇混凝土剪力墙的顶部屈服位移为9.6 mm,顶部极限位移为82.3 mm,位移延性系数为8.5;利用箍筋将剪力墙与竖向钢筋进行连接的预制混凝土剪力墙的顶部屈服位移为5.4 mm,顶部极限位移为52.3 mm,位移延性系数为9.6。利用箍筋将剪力墙与竖向钢筋进行连接的预制混凝土剪力墙裂纹更窄,数量更多,抗变形能力最大,延展性更佳,具有更强的耗散能力。
In order to compare and analyze the mechanical properties of precast concrete walls under different connection conditions,four kinds of concrete shear walls were designed in this paper,and the static loading tests were carried out on them,and the failure modes,dissipation capacity and deformation characteristics of the four kinds of concrete shear walls were compared and analyzed.The results show that the crack width of precast concrete wall is relatively narrow but the number of cracks is more than that of cast-in-place concrete wall.The top yield displacement of cast-in-place concrete shear wall is 9.6 mm,the top limit displacement is 82.3 mm,and the displacement ductility coefficient is 8.5.The top yield displacement of precast concrete shear wall connected with vertical reinforcement by stirrup is 5.4 mm,the top limit displacement is 52.3 mm,and the displacement ductility coefficient is 9.6.The precast concrete shear wall connected with vertical reinforcement by stirrup has narrower cracks,more cracks,the largest deformation resistance,better ductility and stronger dissipation ability.
作者
李小玲
Li Xiaoling(Tongbai County Construction Engineering Quality and Safety Supervision Station,Tongbai,Henan 474750)
关键词
预制建筑工程
混凝土墙体
静力试验
抗震技术
力学性能
Prefabricated building engineering
Concrete wall
Static test
Seismic technology
Mechanical property
