郝永昶^1,2  李忠献²  周  炜²  康谷贻²  胡庆昌³  徐云扉³

 （1 西安建筑科技大学 710055； 2 天津大学 300072； 3 北京市建筑设计研究院 100045）

 

[提要]  通过4根钢筋混凝土分体柱框架边节点在较高轴压比和低周反复水平荷载作用下的试验研究，分析了分体柱框架边节点的裂缝出现荷载、最大承载能力、破坏形态及其滞回特性等抗震性能；探讨了节点上下层柱全部或部分采用分体柱对框架边节点抗震性能的影响；研究了过渡区对分体柱框架边节点受力性能的影响；得出了分体柱框架边节点的设计建议。
[关键词]  钢筋混凝土  分体柱  节点  抗震性能

Based on the experimental study on four exterior beam-column joints of RC, frame with split columns under high axial compression ratio and horizontal cyclic loading, the cracking loacl, maximum bearing capacity, failure pattern and hysteresis property of the joints are analyzed in detail. The influence on the seismic behavior of the joints, in which all or part of the columns up or below the joints are replaced by the split columns, is explored. And, the influence of the transition regions of the split columns on the seismic behavior of the joints is investigated. Finally, some suggestions for designing the beam-column joints of RC frame with split columns are given, which is much useful to actual engineering design.
Keywords: reinforced concrete frame; split column; beam-column joint; seismic behavior; hysteresis property