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合肥新桥国际机场航站楼屋盖由大跨度多榀钢结构刚架组成,刚架由箱形斜柱,大曲率箱形曲梁和转换节点以及空间桁架组成。空间桁架和箱形曲梁之间的转换部分被称之为转换节点,由于此处的几何和刚度的不连续,使得转换节点处易形成复杂的几何受力和应力集中,因此,转换节点是整个刚架的关键部位。本文针对典型刚架GJ3-6、GJ3-4和GJ3-1,建立了ABAQUS有限元模型,施加六种承载力极限状态荷载组合,重点研究了转换节点细部构造对节点受力的影响,为此类节点的设计提出了合理的建议。
Hefei Xinqiao International Airport terminal building by the long-span multi-frame steel frame consisting of rigid frame by the box-shaped inclined column, curved box curved beam and conversion node and the space truss. The transition part between the space truss and the box-shaped curved beam is called the transition node. Because of the discontinuity of geometry and stiffness here, it is easy to form complicated geometric stress and stress concentration at the transition node. Therefore, the transition node is The key part of the whole frame. In this paper, ABAQUS finite element model is established for the typical rigid frames GJ3-6, GJ3-4 and GJ3-1, and six ultimate load combinations are applied. The effect of the detailed structure of the transition nodes on the stress of the joints is studied emphatically. The design of class nodes makes reasonable suggestions.