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(1 同濟(jì)大學(xué)結(jié)構(gòu)工程與防災(zāi)研究所  上海 200092;2 沈陽建筑大學(xué)  110015;3 大連理工大學(xué)  116023)
【提要】  對10根T形柱節(jié)點進(jìn)行了低周反復(fù)荷載作用下的試驗研究，著重分析了T形柱節(jié)點的承載能力和破壞特點，梁、柱主筋和核心區(qū)箍筋應(yīng)力變化；實測梁端的荷載位移滯回曲線，研究軸壓比、配箍率對節(jié)點核心區(qū)受剪承載力和延性性能的影響。并把試驗結(jié)果與混凝土規(guī)范中矩形柱節(jié)點計算公式進(jìn)行了比較。
【關(guān)鍵詞】  T形柱節(jié)點  受剪承載力  配箍率  延性  軸壓比
Experimental Studies on Ductility and Shear Strength of RC Joints with Tshaped Columns/Wang Dan1，Liu Ming2，Huang Chengkui3(1 Tongji University, Shanghai 200092，China;2 Shenyang Architecture and Civil Engineering Institute,Shengyang 110015,China; 3 Dalian University of Technology, Dalian 116023,China)
Abstract:Ten RC joints with Tshaped columns under cyclic loading were tested. The specimens were designed to fail in the joints in order to study the failure behavior，loadbearing capacity，crack development law and the hysteresis behavior. The effects of axial compression ratio and the volumetric ratio of stirrups in the core on ductility and shear bearing capacity of specimens are discussed. The tested shear strength of joint with Tshaped columns is compared with that calculated by the formulas of shear strength of rectangular columns given in the code for design of concrete structures.
Keywords:Tshaped columns；joints;shear strength;ratio of stirraps;ductility;axial compression ratio