海口塔超高层巨柱节点试验分析

TEST AND ANALYSIS ON SUPER-HIGH HUGE COLUMN NODE

海口塔超高层建筑塔楼采用巨型支撑框架、核心筒、伸臂桁架抗侧力结构体系3部分组成,其中矩形钢管混凝土中柱与圆形钢管斜撑的连接节点为传力的关键点,该节点在节点构造、传力机制、材料组成、加工制作等方面都非常复杂,且数值模拟难度大,在施工过程中结合构件厂内加工需要与设计沟通对节点进行了数次优化,验证优化后的节点是否满足荷载要求进行该关键节点的性能试验研究十分必要,从而为结构设计提供可靠的实践理论依据。

The super-high tower building of Haikou Tower is composed of three parts, including huge support frame, core tube and outrigger truss lateral force resistant structure system. Among these parts, the connection point between rectangular steel tube concrete medium column and circular steel tube oblique support is the key point. The node is very complicated on the aspects of node structure, force transmission mechanism, material and manufacturing process, and has difficult numerical simulation. Therefore, the node was optimized time after time during construction according to factory manufacturing requirement and designer,s opinion. Node performance test is necessary by verifying whether the optimized node could satisfy the load requirement, and it could provide reliable practical and theoretical basis for structure design.