复合齿槽环筋扣合锚接预制剪力墙数值模拟  

Numerical Simulation of Prefabricated Shear Wall with Compound Groove Ring-reinforcing Anchorage

作　　者：王中强[1] 谢廉 WANG Zhongqiang;XIE Lian(School of Civil Engineering,Changsha University of Science and Technology Changsha 410114,China)

机构地区：[1]长沙理工大学土木工程学院,长沙410114

出　　处：《广东土木与建筑》2022年第8期60-63,共4页Guangdong Architecture Civil Engineering

摘　　要：复合齿槽环筋扣合锚接预制剪力墙由预制墙体、加载梁和地梁组成,其中预制墙体预留复合齿槽,两侧约束边缘暗柱与复合齿槽区域现浇。为深入研究其抗震特性,使用有限元软件ABAQUS对复合齿槽环筋扣合锚接预制剪力墙进行模拟,对轴压比、约束边缘暗柱配筋率和环筋扣合锚接长度进行参数分析。仿真结果显示:当轴压比从0.08增大至0.24,墙体的峰值荷载也相应提高,但是在达到极限承载力后耗能能力下降,延性降低。当约束边缘暗柱的配筋率增大时,墙体的峰值荷载有明显的提高,但延性随约束边缘暗柱配筋率的增大先增大后减小,因此选择在合适的范围内增加暗柱纵筋的配筋率,提高墙体的承载能力和延性是有必要的。墙体的承载力和延性受环筋扣合锚接长度影响较小。The pre-fabricated shear wall with ring-stiffened anchorage of composite tooth groove is composed of prefabricated wall,loading beam and ground beam.The prefabricated wall reserves composite tooth groove,and the dark column on both sides of the constraint edge and the cast-in-situ composite tooth groove area are cast.In order to further study its seismic characteristics,the finite element software ABAQUS was used to simulate the precast shear wall with composite groove ring-stiffened anchor connection.The axial compression ratio,the reinforcement ratio of the dark column at the constraint edge and the length of the ring-stiffened anchor connection were analyzed.The simulation results show that when the axial compression ratio increases from 0.08 to 0.24,the peak load of the wall increases accordingly,but the energy dissipation capacity decreases and the ductility decreases after reaching the ultimate bearing capacity.When the reinforcement ratio of the confined edge dark column increases,the peak load of the wall increases significantly,but the ductility increases first and then decreases with the increase of the reinforcement ratio of the confined edge dark column.Therefore,it is necessary to increase the reinforcement ratio of the longitudinal reinforcement of the dark column in a suitable range to improve the bearing capacity and ductility of the wall.The bearing capacity and ductility of the wall are less affected by the lap length of the anchor bar.

关 键 词：ABAQUS数值模拟分析 预制剪力墙 环筋扣合锚接 复合齿槽 抗震性能 

分 类 号：TU352.11[建筑科学—结构工程]