This paper studied the warp and stiffness of end - plate connection , and studied how the actual stiffness of end - plate connection influence stiff frame ' s displacement , and some design improvements are proposed . a methodology based on finite element modeling is used to establish strong bolted end - plate connection calculation model , and solved the interface between end - plates question and how to add bolt pretension when imitating end - plate connection ' s elastic material characteristic . through analyzing and comparing calculation results and experiment data , this paper summarized bolt force distribution , connection moment resistance , moment - rotation relationship and connection stiffness 笔者采用有限元方法，建立高强螺栓端板连接的计算模型，模拟了节点弹性阶段的工作状态，较好的解决了高强螺栓端板连接中的接触面问题和螺栓预拉力的施加问题，通过对计算结果的分析以及与实验数据的比较，总结出端板连接在弯矩作用下的螺栓拉力分布规律、节点抗弯承载力及其影响因素，以及节点刚度特性及其对刚架性能的影响，同时，对端板连接受力变形性能也做了十分有益的分析，为轻钢节点设计方法的改进提供了依据。
Using the general finite element programming package of ansys10 . 0 , the study of gabled frames beam - column end - plate connections is made , considering synthetically nonlinear ( material , geometry and contact ) , bolt pretension forces and ratio of axial compression stress to strength . elastic - plastic finite element analyses are carried out among 28 species of 3 series under monotonic loads , in order to discuss the influence of parameters including stiffness of end - plate , bolt diameter , friction coefficients and so on 本文使用通用有限元软件ansys10 . 0综合考虑了三重非线性(材料非线性、几何非线性以及状态非线性)的影响,同时考虑了螺栓预拉力的影响,对考虑端板厚度、端板加劲肋的设置、螺栓直径、摩擦系数等参数不同的3个系列(端板系列,螺栓直径系列,摩擦系数系列) 28个试件进行了有限元数值模拟,对连接节点的性能进行了分析研究。
The results of full - scale tests in this dissertation canaugment international database of test and numerical analysis results for tubularjoints . based on the experimental study and numerical analysis , design proposal for theultimate tensile strength of gusset plate connections to slotted tubes is recommended . it has bigness significance to establish design formulae of gusset plate connections toslotted tubes and perfect design formulae of steel tension member and it also can givesome advices to practice engineering 在试验研究的基础上,根据有限元分析的结果,本文提出了关于管板节点受拉极限承载力的设计公式,为我国钢结构规范建立管板节点受拉极限承载力设计公式及有关拉杆的设计公式的进一步完善提供了有意义的参考,同时对实际工程也有一定的参考价值。
