变轴压比预制高强混凝土混合配筋管柱抗震性能研究

发布时间：2019-06-21 14:24

【摘要】：通过对3根预制高强混凝土混合配筋管柱试件在不同轴压比下的拟静力试验,研究了轴压比对其抗震性能的影响.其中管柱试件中预应力钢棒和HRB400级钢筋各配置6根,两者间隔布置.详细记录试件的破坏过程,得到试件的滞回曲线、骨架曲线、承载力、变形能力、承载力退化曲线和耗能能力等.试验结果表明:各试件均为受弯破坏,延性系数为2.50~2.93,极限位移角为1/33~1/27;配置预应力筋的混合配筋管柱试件残余位移较小,自复位能力较强;轴压比是影响试件延性和耗能能力的重要因素,随着轴压比增大,试件延性降低,耗能能力减弱.
[Abstract]:The effect of axial compression ratio on its anti-seismic performance is studied by the pseudo-static test of three precast high-strength concrete mixed reinforced tubular column specimens at different axial compression ratios. In which the pre-stressed steel bar and the HRB400 grade steel bar in the column test piece are respectively arranged with 6, and the two steel bars are arranged at intervals. The damage process of the test piece is recorded in detail, and the hysteresis curve, the skeleton curve, the bearing capacity, the deformation capacity, the bearing capacity degradation curve and the energy dissipation capacity of the test piece are obtained. The test results show that each test piece is subjected to bending failure, the ductility factor is 2.50-2.93, the limit displacement angle is 1/33-1/27, the residual displacement of the mixed reinforced tubular column test piece with the pre-stressed rib is small, the self-resetting capability is strong, the axial compression ratio is an important factor which influences the ductility and energy dissipation capacity of the test piece, With the increase of the axial compression ratio, the ductility of the test piece is reduced, and the energy dissipation capacity is reduced.
【作者单位】：天津大学建筑设计研究院;天津大学天津市土木工程结构及新材料重点实验室;天津大学建筑工程学院;
【基金】：科技部中欧合作项目(2014DFE70210) 天津市应用基础与前沿技术研究计划重点资助项目(2014JCZDJC30000) 天津市建设系统科学技术发展计划资助项目(2013-11)~~
【分类号】：TU473.13

【参考文献】