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1)南昌大學(xué)建筑工程學(xué)院，南昌，330029；2)井岡山學(xué)院，吉安，343009；3)南昌航空工業(yè)學(xué)院土建系，南昌，330034。
【提要】進(jìn)行了5個(gè)足尺異形柱框架頂層邊節(jié)點(diǎn)受剪性能的試驗(yàn)研究。對核心區(qū)開裂、02mm裂縫，屈服、極限、破壞階段的裂縫開展，梁縱筋及節(jié)點(diǎn)箍筋屈服乃至節(jié)點(diǎn)破壞的特征等進(jìn)行觀察，量測了節(jié)點(diǎn)核心、翼緣正面、節(jié)點(diǎn)與梁端連接處和箍筋的應(yīng)變數(shù)據(jù)，記錄了梁端荷載位移曲線。在實(shí)測數(shù)據(jù)的基礎(chǔ)上著重分析了各試件的耗能、剛度、延性等抗震性能以及肢長對節(jié)點(diǎn)受剪性能的影響。
【關(guān)鍵詞】 異形柱框架 頂層邊節(jié)點(diǎn) 受剪性能 低周反復(fù)荷載 抗震性能
Experimental Research on Shear Properties of Top Storey Exterior Beamcolumn Joints in RC Frame Structure with Specialshaped Columns/Gui Guoqing1,2，Xiong Lili3，Xiong Jingang1(1 School of Architecture and Civil Engineering, Nanchang University, Nanchang 330029,China; 2 Jinggangshan University, Ji'an 343009,China;3 Department of Civil Engineering, Nanchang Institute of Aeronautical Technology, Nanchang 330034,China)
Abstract:Five prototype top storey exterior joints in RC frame structure with specialshaped columns are tested. Through the experiment, initial crack, 02mm crack phrase, yielding phrase, extremity and  failure stage are observed.At the same time, the strains of joint concrete, longitudinal reinforcement of beam, wing concrete and stirrup on each phrase are measured, and the beamtip loaddisplacement curve is recorded. On the basis of measured data, the earthquakeresistant characteristics such as energy dissipation, stiffness and ductility are analyzed.
Keywords:RC frame structure; specialshaped columns; top storey; exterior joint;shear
properties; aseismic characteristics