T形方颈单边螺栓连接梁柱节点力学性能研究  

Study on Mechanical Properties of Beam-Column Joints Bolted by T-Head Square-Neck One-Side Bolts

作　　者：刘泉维 孙乐乐 叶守杰 谭嘉文 刘砚夫 王培军[3] LIU Quanwei;SUN Lele;YE Shoujie;TAN Jiawen;LIU Yanfu;WANG Peijun(Qingdao Metro Group Co.,Ltd.,Qingdao 266000,China;Yantai Research Institute,Harbin Engineering University,Yantai 264003,China;School of Civil Engineering,Shandong University,Jinan 250061,China)

机构地区：[1]青岛地铁集团有限公司,青岛266000 [2]哈尔滨工程大学烟台研究院,烟台264003 [3]山东大学土建与水利学院,济南250061

出　　处：《结构工程师》2025年第1期43-54,共12页Structural Engineers

基　　金：国家自然科学基金面上项目(52078280)。

摘　　要：T形方颈单边螺栓是一类新型的单侧安装紧固件,可用于闭口截面钢构件连接,其构造简单、安装便利,无须额外的安装辅助工具,能适应现场粗放的施工方式,具有较大的应用潜力。采用ABAQUS有限元分析软件建立了T形方颈单边螺栓连接钢梁-钢管柱节点的数值计算模型,评估了其结构性能,揭示了此类连接的承载和破坏机理。进而开展了T形方颈单边螺栓连接节点的参数分析研究。结果表明,T形头长宽比对节点破坏模式和承载力的影响较大。合适的、最优的螺栓T形头长宽比不仅可以提高螺栓孔的抗冲切承载力,还能保证节点的力学性能不被栓孔影响。T形方颈单边螺栓的栓杆旋转偏差和孔内滑移对节点力学性能的影响均很小,设计中可忽略。长圆形栓孔HVH型混合布置可以使节点获得最优的结构响应,应优先推荐。建议栓孔采用中等装配精度。T-head Square-neck One-side Bolt(TSOB)is a novel fastener,which can be used for the connection of Square Hollow Steel(SHS)members,with its simple construction,easy installation,no additional aids,can adapt to the rough installation manners in construction site,and has a large application potential.In this paper,the Finite Element(FE)analysis software ABAQUS was used to establish the numerical model of TSOBs bolted beam to SHS column joints,evaluating the structural performance,and revealing the bearing and failure mechanism of such joints.Furthermore,the parametric analysis of TSOBs bolted beam to SHS column joints was carried out.The results show that the T-head aspect ratio of TSOB has a greater influence on the joint failure modes and bearing capacity.A suitable and optimal T-head aspect ratio can not only improve the punching bearing capacity of the bolt hole but also ensure that the mechanical properties of the joints are not affected by the slotted bolt holes.The influence of the rotation deviation and shank offset for TSOBs on the joint mechanical properties is minimal and can be ignored in the design.The arrangement pattern HVH for the slotted bolt holes results in optimum structural response of the joints and should be recommended in preference.Furthermore,medium assembly accuracy is recommended for the slotted bolt holes.

关 键 词：T形方颈单边螺栓 钢管柱 梁柱节点 抗弯性能 数值模拟 

分 类 号：TU973[建筑科学—结构工程]