摘要
在试验研究的基础上,对带预制混凝土(PC)填充墙的装配式联肢剪力墙进行数值模拟分析,系统研究不同连接方式、轴压比下结构的破坏形态、承载力、刚度、延性等性能。结果表明:PC填充墙的存在可提高结构的承载力、抗侧刚度,刚性连接时结构的周期折减系数建议取0.8~1。随着轴压比的增大,试件的屈服荷载和峰值荷载增大;轴压比小于0.3时,结构的抗侧刚度随轴压比的增大而增大,当轴压比大于0.3时,随轴压比增大,刚性连接下的刚度减小,而柔性连接试件刚度基本不变;结构的延性随轴压比的增大而减小,刚性连接试件的延性系数降低速率高于柔性连接试件,建议刚性连接下,轴压比大于0.3时加强剪力墙边缘构件配筋。
Based on the experimental research,numerical simulation analysis of the precast concrete(PC)coupled shear wall with PC infill walls was conducted.Performance of the specimens with different connection methods and axial compression ratios were evaluated in terms of failure mode,bearing capacity,stiffness and ductility,and so on.The results show that the existence of PC infill wall can improve the bearing capacity and lateral stiffness.It is recommended that the periodic reduction factor is between 0.8 and 1.0 when the PC coupled shear walls and the PC infill walls are rigidly connected.As the axial compression ratio increases,the yielding and peak loads of specimen increase.When the axial compression ratio is less than 0.3,the lateral stiffness of the structure increases with the increasing of the axial compression ratio.However,when the axial compression ratio is greater than 0.3,the stiffness under rigid connection decreases with the increasing of the axial compression ratio,but the rigid connection specimen stiffness is basically unchanged.The ductility of the structure decreases with the increasing of the axial compression ratio,and the ductility coefficient of the rigid connection specimens decreases faster than the flexible connection specimens.It is recommended to strengthen the reinforcement of shear wall edge members when the axial compression ratio is greater than 0.3 in rigid connection.
作者
庞瑞
刘晓怡
张海东
魏金桥
Diakhate Adama
Pang Rui;Liu Xiaoyi;Zhang Haidong;Wei Jinqiao;Diakhate Adama(Henan University of Technology,Zhengzhou 450001,China;CSCEC Zhongyuan Architectural Design Institute Co.,Ltd.,Zhengzhou 450004,China;China Construction Science&Technology Henan Co.,Ltd.,Zhengzhou 450000,China)
出处
《土木工程学报》
EI
CSCD
北大核心
2020年第S02期40-46,共7页
China Civil Engineering Journal
基金
国家自然科学基金(51778214)
中原青年拔尖人才支持项目(ZYQR201912170)
河南省属高校基本科研业务专项基金(2017RCJH04)
关键词
装配式联肢剪力墙
受力性能
数值模拟
轴压比
precast coupled shear wall
mechanical performance
numerical analysis
axial compression ratio
作者简介
庞瑞(1981—),男,博士,副教授。主要从事装配式混凝土结构研究,E-mail:seupangrui@163.com;刘晓怡(1995—),女,硕士研究生。主要从事装配式混凝土结构研究;张海东(1975—),男,硕士,教授级高级工程师。主要从事装配式混凝土结构研究;魏金桥(1984—),男,硕士,高级工程师。主要从事装配式混凝土结构研究;Diakhate Adama(1987—),男,硕士研究生。主要从事装配式混凝土结构研究。
