鋼筋混凝土分體柱框架邊節(jié)點抗震性能的試驗研究
郝永昶1,2 李忠獻2 周 煒2 康谷貽2 胡慶昌3 徐云扉
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郝永昶1,2 李忠獻2 周 煒2 康谷貽2 胡慶昌3 徐云扉3（1 西安建筑科技大學(xué) 710055； 2 天津大學(xué) 300072； 3 北京市建筑設(shè)計研究院 100045）[提要] 通過4根鋼筋混凝土分體柱框架邊節(jié)點在較高軸壓比和低周反復(fù)水平荷載作用下的試驗研究，分析了分體柱框架邊節(jié)點的裂縫出現(xiàn)荷載、最大承載能力、破壞形態(tài)及其滯回特性等抗震性能；探討了節(jié)點上下層柱全部或部分采用分體柱對框架邊節(jié)點抗震性能的影響；研究了過渡區(qū)對分體柱框架邊節(jié)點受力性能的影響；得出了分體柱框架邊節(jié)點的設(shè)計建議。
[關(guān)鍵詞] 鋼筋混凝土 分體柱 節(jié)點 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
