摘要
基于有限元分析软件ABAQUS建立了装配整体式齿槽剪力墙的数值分析模型,通过与试验结果对比分析验证了数值分析模型的准确性,研究了轴压比对装配整体式齿槽剪力墙的影响规律。结果表明,建立的数值分析模型与试验结果吻合较好,能够反映装配整体式齿槽剪力墙的破坏形态和受力特征;提高轴压比可抑制墙体裂缝的开展,但根部混凝土压溃区域有所增大,纵向孔洞底部和竖向圆孔对应位置处的混凝土破坏现象也有所加剧;随着轴压比的提高,装配整体式齿槽剪力墙的承载力先增加后减小,轴压比为0.40时达到最大值;峰值荷载后,墙体刚度退化速率加快,变形能力降低,但轴压比达到0.60时,墙体位移延性系数为5.4,依然具有较好的变形能力。
Based on the finite element analysis software ABAQUS,the numerical analysis model of the assembled integral cogged shear wall is established.The accuracy of the numerical analysis model is verified by comparison with the test results.The influence of the axial pressure ratio on the assembled integral cogged shear wall is studied.The results show that the established numerical analysis model is in good agreement with the test results,and can reflect the failure pattern and stress characteristics of the assembled integral cogged shear wall;increasing the axial compression ratio can inhibit the development of wall cracks,but the area of concrete collapse at the root is increased,and the concrete failure at the bottom of the longitudinal hole and the corresponding position of the vertical circular hole is also intensified;with the increase of the axial compression ratio,the bearing capacity of the assembled integral cogged shear wall increases at first and then decreases,reaching the maximum value when the axial compression ratio is 0.40;after the peak load,the degradation rate of wall stiffness is accelerated and the deformation capacity is reduced,but when the axial compression ratio reaches 0.60,the wall displacement ductility coefficient is 5.4,which still has good deformation capacity.
作者
林峰
刘继良
初明进
LIN Feng;LIU Jiliang;CHU Mingjin(Beijing Advanced Innovation Center for Future Urban Design,Beijing University of Civil Engineering and Architecture,Beijing 100044;School of Civil Engineering,Dalian University of Technology,Dalian 116024;Shandong Aikefu Construction Technology Co.Ltd.,Yantai 265500)
出处
《北京建筑大学学报》
2023年第2期105-112,共8页
Journal of Beijing University of Civil Engineering and Architecture
基金
国家自然科学基金项目(51778034)
北京市自然科学基金项目(8222012)。
关键词
齿槽剪力墙
有限元
轴压比
受力性能
cogged shear wall
finite element
axial compression ratio
stress performance
