不同轴压比条件下Z形截面混凝土柱梁柱节点抗剪性能试验研究  

Experimental study on the shear behavior of frame joint with Z-shaped RC columns under different ratio of axial compression stress to strength

作　　者：朱振华[1] 杨俊杰[1] 陈瑞生[1] 季青[1] 唐宏业 赵华群 

机构地区：[1]浙江工业大学建筑工程学院,浙江杭州310032 [2]浙江万事达集团有限公司,浙江舟山316000 [3]浙江昆仑建设集团股份有限公司,浙江杭州310016

出　　处：《浙江工业大学学报》2011年第1期57-60,共4页Journal of Zhejiang University of Technology

基　　金：浙江省建设厅;财政厅2007年建设科技基金资助项目(浙财建字〔2007〕182号)

摘　　要：通过对不同轴压比条件下的Z形截面混凝土柱梁柱节点进行抗剪承载力试验,研究分析了轴压比对试件节点抗剪性能的影响.结果表明:随着轴压比的增加,Z形截面混凝土柱梁柱节点极限抗剪承载力下降,试件变形与耗能能力减弱,节点处剪切主裂缝的走向与轴力的夹角变小.根据试验结果,回归得到了基于斜压杆理论的Z形柱节点抗剪承载力公式,可供设计人员参考.Based on the experiment of frame joint with Z-shaped concrete columns under different ratio of axial compression stress to strength,the effect of ratio of axial compression stress to strength on shear behavior of these specimens was studied.The conclusion could be drawn as follows： the capability of deformation and dissipation decreased,the ultimate shear-resistant carrying capability of frame joint with Z-shaped concrete columns decreased and the angle of axial force and main crack due to shear force became smaller with the increase of ratio of axial compression stress to strength.According to the experimental results and the theory of diagonal strut,the formula of shear-resistant carrying capability of frame joint with Z-shaped RC columns was proposed,which may be referenced by designers.

关 键 词：Z形截面混凝土柱 节点 抗剪承载力 轴压比 试验研究 

分 类 号：TU317.1[建筑科学—结构工程]