摘要
制作了3个自密实混凝土加固框架中节点,采用MTS伺服加载系统进行自密实混凝土加固节点的拟静力试验,研究不同轴压比对自密实混凝土加固节点抗震性能的影响.3个加固试件的轴压比分别为0.1,0.2,0.3.通过对试件破坏过程、新老钢筋应变、荷载位移滞回曲线等试验结果的分析得到:随柱端轴压比的增加,柱端压力对节点核心区的约束作用逐渐增大,加固节点的抗剪承载力、耗能能力、结构刚度等随之提高,而加固节点的极限位移、位移延性系数随之降低.
Three frame joints were produced strengthened by self-compacting concrete.Take MTS servo loading system of static test for the frame joints,to study the influence of different axial compression ratio for the seismic performance.The axial compression ratio of the three strengthened specimen were respectively 0.1,0.3,0.5.The results of the damage process,strain of the old steel and new steel,the load-displacement hysteresis loops were analyzed,and it was found that with the axial compression ratio of column end increasing,the constraint of the joint core by the column pressure is gradually increasing,and the shear capacity,energy dissipation capacity,structural stiffness,and ultimate displacement of the strengthened joints increased,while the displacement and the displacement ductility factor decreased.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第6期800-805,共6页
Journal of Fuzhou University(Natural Science Edition)
基金
国家自然科学基金资助项目(50978060)
福建省科技厅重点资助项目(2009H0027)
关键词
框架节点
自密实混凝土
加固
轴压比
抗震性能
frame joints
self-compacting concrete
strengthen
axial compression ratio
seismic performance
