建筑结构学报2018，Vol.39Issue(4)：37-44,8.DOI:10.14006/j.jzjgxb.2018.04.005
仿古建筑方钢管混凝土柱-钢筋混凝土圆柱连接抗震性能试验研究
Experimental study on seismic behavior of imitated ancient building connections between concrete filled square steel tubular columns and reinforced concrete circular columns
摘要
Abstract
According to the experiments of four imitated ancient building connections between concrete filled square steel tubular columns (CFST) and reinforced concrete circular columns (RC) under low cyclic reversed loading,the failure modes under different axial compression ratios were obtained.The hysteretic loops,skeleton curves,deformability,energy dissipation capacity,stiffness degradation and strength degradation were analyzed.It is shown that the failure modes of CFST-RC column connections are flexural failure,with some characteristics of shear failure.Plastic hinges are formed at the root of CFST column and RC column,and there are obvious shear oblique cracks in the middle and upper part of RC column.The hysteretic loops are full,and the connections have insignificant stiffness degradation and strength degradation.As the connections fail,the ductility factor is between 4.42 and 5.54,and the equivalent viscous damping ratio is between 0.233 and 0.311,showing excellent deformation capacity and energy dissipation capacity.In the range of experimental axial compression ratio,the peak load and ductility of the connections increase with the increase of the axial compression ratio.The peak load and ductility of the connections with the same axial compression ratio decrease with the increase of slenderness ratio.关键词
仿古建筑/CFST-RC柱连接/轴压比/拟静力试验/抗震性能Key words
imitated ancient building/CFST-RC column connection/axial compression ratio/quasi-static test/seismic behavior分类
建筑与水利引用本文复制引用
薛建阳,马林林,林建鹏,吴琨,葛鸿鹏..仿古建筑方钢管混凝土柱-钢筋混凝土圆柱连接抗震性能试验研究[J].建筑结构学报,2018,39(4):37-44,8.基金项目
国家自然科学基金项目(51678478),中建股份科技研发课题(CSCEC-2012-Z-16). （51678478）
