钢筋混凝土框架异型节点抗剪承载力研究  

Anti-shear capacity of abnormal joints of RC frame

作　　者：张淑云[1] 白国良[1] 李红星[1] 朱佳宁[1] 

机构地区：[1]西安建筑科技大学土木工程学院

出　　处：《西安科技大学学报》2006年第2期170-174,共5页Journal of Xi’an University of Science and Technology

基　　金：国家电力公司"十五"重点项目(06-Y200203-T03);陕西省教育厅科研项目(03JK142)

摘　　要：根据9个钢筋混凝土框架异型节点试件的拟静力试验结果,指出异型节点受力过程分为初裂、通裂、极限和破坏4个阶段;讨论了轴压比、节点核芯配箍率、柱截面高度变化对异型节点抗剪性能的影响;提出应考虑节点核芯区箍筋屈服的不均匀性并在通裂状态下以“小核芯”为分析单元来研究此类节点抗剪承载力的建议;最终给出了异型节点抗剪承载力的计算公式。Based on the pseudo-static experimental results of nine abnormal joints, the damage process of abnormal joint is divided into four stages of original crack, entire crack, ultimate state and failure, the effect of axial force ratio,stirrup ratio and height of column section on seismic behavior of abnormal joint are discussed, the conclusion that anti-shear capacity of abnormal joint are studied in entire crack state by studying the minor core of abnormal joint is made, the calculating formula for antishear capacity of abnormal joint is proposed with a view to asymmetry in stirrup yield.

关 键 词：钢筋混凝土框架异型节点 拟静力试验 抗剪承载力 

分 类 号：TU375.4[建筑科学—结构工程]