外伸端板高强度螺栓抗拉连接设计方法研究  

Study on the Design Method of High Strength Bolts of Extended End-Plate Tensile Connections

作　　者：刘秀丽[1] 王燕[1] 

机构地区：[1]青岛理工大学土木工程学院,山东青岛266033

出　　处：《建筑钢结构进展》2013年第1期29-36,共8页Progress in Steel Building Structures

基　　金：国家自然科学基金(51078194);<钢结构设计规范>国家标准管理组科研专项基金(GB500172010-18)

摘　　要：通过建立系列有限元分析模型研究了外伸端板高强度螺栓抗拉连接的力学性能,分析中考虑了不同端板厚度和螺栓直径变化对连接节点受力性能的影响。研究结果表明,高强度螺栓总拉力应由外加荷载引起的螺栓拉力和端板弯曲变形产生的撬力组成。通过分析拟合得到由外加荷载产生的螺栓拉力和螺栓撬力的分布模型和计算公式,并分别给出摩擦型和承压型两种类型的高强度螺栓考虑撬力影响抗拉连接承载力计算公式。The mechanical behavior of high strength bolts of extended end-plate connections are studied by finite element analysis in the paper,and different finite element models are established considering the influence of different end-plate thicknesses and diameters of bolts.The finite element analysis results show that bolt tension is the sum of the tensile force due to moment and the prying force due to the bending deformation of end-plate.The distribution models and calculation formulas of bolt tensions and prying forces for friction type and bearing type high strength bolts are obtained by data fitting of finite element analysis.And the design methods of friction type and bearing type high strength tensile bolts considering the influence of prying force are given finally.

关 键 词：高强度螺栓 外伸端板连接 螺栓拉力 撬力 预拉力 

分 类 号：TU391[建筑科学—结构工程]