基于ABAQUS的斜交网格转换层节点受力性能有限元分析

为了解斜交网格中Y型转换层节点的受力性能,以深圳某超高层建筑交叉网格筒体结构为研究对象,采用ABAQUS软件对基础与首层转换层Y型节点进行了正常使用条件下的数值模拟,分析带内隔板方钢管混凝土柱-钢梁刚性节点的受力和变形特征,验证其构造的合理性。数值模拟结果表明:加载过程中,节点核心区变形不显著,斜柱将先于节点区破坏,节点区将能有效传递斜柱内力,起到良好的联结作用,满足节点承载力大于构件承载力的强节点设计原则。

Finite element analysis on mechanical behavior of transfer joint used in obliquely crossing lattice based on ABAQUS

In order to study the mechanical behavior of the Y-shaped joints in the oblique crossing lattice,the numerical simulations are carried out using the ABAQUS software on a transfer joint in obliquely crossing lattice in one extra high-rise structure in Shenzhen.The stress state and deformation behavior of concrete-filled square tube column and steel beam rigid joint with internal diagrams are analyzed.The results of the numerical simulation show that in the loading process,the deflection of the joint core is insignificant under good connection,the joint core is able to deliver the internal force effectively before the damage of the oblique column occurs,and it meets the requirement of "strong joint,weak column".