某超高层钢管混凝土柱——伸臂桁架节点分析

Joint analysis of concrete-filled steel tube column and outrigger in a super-tall building

某61层框架—核心筒结构超高层建筑,主体结构形式为钢管混凝土框架—伸臂桁架—钢筋混凝土核心筒。研究了伸臂桁架、带状桁架与钢管混凝土框架柱连接节点的最不利工况,对其进行设计,并采用ANSYS分析了其受力特点,结果表明加强环对节点的约束效应明显,焊缝是控制节点强度的主要因素。

A 61-story core tube structure contains concrete-filled steel tube columns,outriggers and reinforced concrete shear wall. The most unfavorable conditions of the joint of concrete-filled steel tube columns and outriggers were researched,after which the joint was designed and simulated through ANSYS. The research indicated that constraint effect of the reinforcement ring was significant,and the major impact of the strength of the joint was the strength of the weld line.