方钢管柱装配式钢结构梁柱节点性能研究

发布时间：2018-01-12 16:26

本文关键词：方钢管柱装配式钢结构梁柱节点性能研究　出处：《吉林建筑大学》2016年硕士论文　论文类型：学位论文

【摘要】：众所周知,装配式结构具有建设周期短、材料利用率高、工程污染小等一系列优点,对于一个框架结构来说,节点的性能显得尤为重要。方钢管柱表面积较小、强轴和弱轴的抗弯刚度相差不大,目前我国主要针对方钢管柱-H型梁和方钢管柱-工字钢梁节点性能的研究,有关方钢管柱-桁架梁节点的研究寥寥无几,对于方钢管柱-桁架梁节点的推广受到一定限制。因此,研发方钢管柱-桁架梁节点对节点新构造的推广具有较高的实际价值。本文用有限元软件建立了边柱无斜撑、边柱有斜撑、中柱无斜撑和中柱有斜撑四种节点形式的模型,对节点在单调荷载作用下进行非线性分析,并对比分析了斜撑的设置所带来的影响。研究得出了节点的极限承载力、初始刚度、破坏形态、节点转角以及梁柱夹角随轴向荷载变化的情况。非线性模拟分析表明节点的强度、刚度和转动能力随着轴力的增大逐渐增大而后减小,斜撑的存在不仅有效的转移了塑性铰,而且还提高了节点的强度、刚度和转动能力。整理了三类方法对节点类别的确定,本文采用非线性M-θ_r关系曲线理论,对四种类型的节点进行刚度类别确定。结果表明节点的刚性随着轴力的变化而变化。另外,采用反弯点法对已建的建筑物进行计算分析,分析得出该建筑物满足要求,有足够的安全储备。最后,提出了有关方钢管柱-桁架梁节点还需要更深层次的研究的问题。
[Abstract]:As everyone knows, the assembly structure has a short construction period, high utilization rate of materials, a series of merits of little pollution, for a frame structure, node performance is very important. The smaller surface area of the steel tube column, stiffness difference of flexural strength and weak axis, the current research focused in our country each other -H type steel column and beam square steel tubular column - beam joints, research on scanty square steel tubular column truss beam joint, for the promotion of square steel tube truss column beam joint is restricted. Therefore, the actual value has high promotion and R & D square steel tubular column truss beam joint of new tectonic node. In this paper, using the finite element software to establish a side column without brace, a side column brace, column and column without brace in a diagonal four node model, the nodes are nonlinear analysis under monotonic loading, and comparative analysis of cable Impact of braces. Studied the ultimate bearing capacity of the joint, the initial stiffness, failure modes, joint angle and beam angle changes with axial loading. Nonlinear simulation analysis show that the strength of joint, increase the stiffness and rotation capacity with axial force increases gradually and then decreases, the bracing there is not only the effective transfer of the plastic hinge, and the node strength is improved, the stiffness and rotation capacity. Three kinds of finishing methods to determine the node category, this paper adopts nonlinear M- theta _r curve theory of four types of nodes are determined. The results show that the stiffness of category nodes change with rigid the axial force changes. In addition, calculation and analysis of the buildings have been built by the inflection point method, analysis of the building to meet the requirements, there is enough safety. Finally, put forward the square steel tubular column truss beam joint There is also a need for deeper research.

【学位授予单位】：吉林建筑大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TU391

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