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考虑轴压比影响的钢筋混凝土框架内节点抗震性能试验研究
引用本文:傅剑平,白绍良,王峥,陈滔.考虑轴压比影响的钢筋混凝土框架内节点抗震性能试验研究[J].重庆建筑大学学报,2000,22(Z1):60-66.
作者姓名:傅剑平  白绍良  王峥  陈滔
作者单位:重庆建筑大学建工学院!重庆400045
基金项目:国家自然科学基金资助项目! ( 598780 56)
摘    要:通过 5对不同剪压比水准的钢筋混凝土内节点梁柱组合体试件的 (每对试件的轴压比一高一低 )低周反复加载试验 ,测定了贯穿节点梁筋的粘结状态以及平行和垂直受力方向节点箍肢的应变 ,观察了核心区损伤发育 ,提出了根据梁筋粘结是否已全面退化将核心区受力分为两个阶段 ,依照这两个阶段核心区的受力特点 ,分析、判定了轴压比对节点抗震性能的影响规律 ,纠正了轴压力能改善节点抗震性能的不全面认识 ,给出了相应设计建议。

关 键 词:钢筋混凝土  框架结构  梁柱节点  粘结退化  轴压比

Effect of Axial Force Ratio on Seismic Behavior of Interior Joints of RC Frames
FU Jian ping,BAI Shao liang,WANG Zhen,CHEN Tao.Effect of Axial Force Ratio on Seismic Behavior of Interior Joints of RC Frames[J].Journal of Chongqing Jianzhu University,2000,22(Z1):60-66.
Authors:FU Jian ping  BAI Shao liang  WANG Zhen  CHEN Tao
Abstract:The low cyclic loading tests on the sub assemblages of RC interior beam column joint with different levels of shear compression ratio are carried out (for each pair of specimens, one is low in shear compression ratio, the other is high). The bonding state of the beam bars across the joint and strain of stirrups parallel and perpendicular to the loading direction are measured. The damage of the core zone is observed. It is proposed that the stress response of the core zone is divided into two stages based on whether bond of the beam bars is substantially deteriorated. On the basis of the characteristics of the two stages, the effect of axial force ratio on seismic behavior of the joints is concluded, and the incomprehensive assumption that the axial force is beneficial to the seismic behavior of joints is corrected. As a result, the design proposals are suggested.
Keywords:reinforced concrete  framed structure  beam  column joint  bond deterioration  axial force compression ratio
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