方钢管柱-H型钢梁T形件单向螺栓连接节点性能研究  

Study on the performance of the blind bolted connection joints of the square steel tube column-H-shaped steel beam T-stub

作　　者：刘仲洋[1,2] 董新元 陈伟 钟旻 李冰阳 翁维素 LIU Zhongyang;DONG Xinyuan;CHEN Wei;ZHONG Min;LI Bingyang;WENG Weisu(Hebei University of Architecture,Zhangjiakou 075051,China;Hebei Key Laboratory for Diagnosis,Reconstruction and Anti-disaster of Civil Engineering,Zhangjiakou 075051,China;Tangshan Jidong Development Yandong Construction Co.,Ltd.,Tangshan 064000,China;State Grid Zhangjiakou Power Supply Company,Zhangjiakou 075000,China;Army Engineering University of PLA,Nanjing 210001,China)

机构地区：[1]河北建筑工程学院,张家口075051 [2]河北省土木工程诊断改造与抗灾重点实验室,张家口075051 [3]唐山冀东发展燕东建设有限公司,唐山064000 [4]国网冀北电力有限公司张家口供电公司,张家口075000 [5]中国人解放军陆军工程大学,南京210001

出　　处：《建筑结构》2022年第3期116-123,共8页Building Structure

基　　金：河北省教育厅高校青年基金项目(QN2017323);河北省教育厅青年拔尖人才项目(BJ2020010)。

摘　　要：研究了在循环荷载作用下,一种新型的方钢管柱-H型钢梁T形件单向螺栓连接节点的破坏模式,以及构件对节点性能的影响。建立了节点的三维非线性有限元模型,以全尺寸梁柱连接节点拟静力试验数据进行了验证。通过参数分析,探讨了柱壁厚度、梁翼缘厚度和腹板削弱程度对新型节点的滞回曲线、骨架曲线、耗能等性能指标的影响。结果表明:循环荷载作用下新型节点滞回曲线呈"梭形"且较饱满,不同参数的节点均具有良好的耗能能力。通过增加柱壁厚度,节点的极限承载力和初始转动刚度增加。但柱壁厚度超过14mm时,单向螺栓和T形件成为节点失效的控制因素;梁不是这种新型节点的薄弱部位,对梁翼缘和腹板进行合理开孔削弱,节点的滞回性能、极限承载、刚度和耗能能力均无显著降低。Under cyclic loading, the failure mode of a new type of the blind bolted connection joints of the square steel tube column-H-shaped steel beam T-stub and the influence of members on the performance of the joint were studied. A three-dimensional nonlinear finite element model was developed, and it was verified with the pseudo-static test data of the full-scale beam-column connection joint. Through parameter analysis, the influence of column wall thickness, beam flange thickness and web weakening degree on the hysteresis curve, skeleton curve, energy consumption and other performance indicators of the new type of joint was discussed. The results show that all hysteretic curves of the new type joints are fusiform and full under cyclic loads, and all series of joints have good energy dissipation behavior. Increasing the column wall thickness, the ultimate bearing capacity and initial rotational stiffness of the joints are increased. However, when the thickness of column wall exceeds 14 mm, blind bolts and T-stub become the control factors of joint failure. Beam is not a weak part of this new type of joint, the hysteretic performance, ultimate bearing capacity, stiffness and energy dissipation capacity of the joints are not significantly reduced when the flange and webs of beam are reasonable weakened.

关 键 词：梁柱节点 方钢管柱 单向螺栓 T形件 循环荷载 

分 类 号：TU391[建筑科学—结构工程]