节点域箱形加强式工字形柱弱轴连接钢框架的力学性能和经济性分析

Steel Frame Mechanical Properties and Economical Efficiency Analysis of Box Strengthen-joint Region Connection of I-section Column for Weak Axis

在钢框架结构设计中,提出一种新型节点域箱形加强式工字形柱弱轴连接方式。为了考察该连接在8度抗震区6层以下钢框架结构的适用性,结合6层工程实例和3层工程模型,对采用节点域箱形加强式工字形柱弱轴连接和传统箱形柱内隔板式连接的钢框架力学性能和经济性以及单调荷载和循环荷载作用下的连接承载能力做了对比分析。结果表明:对于8度抗震区6层以下钢框架,采用节点域箱形加强式工字形柱弱轴连接钢框架的力学性能和经济性都优于传统箱形柱内隔板式连接钢框架;节点域箱形加强式工字形柱弱轴连接在单调荷载和循环荷载作用下的承载能力也略强于传统箱形柱内隔板式连接。

A new type of box strengthen-joint region connection of I-section column for weak axis was presented in the design of steel frame.In order to investigate the applicability of the connection in eight-degree earthquake zone of six-layer steel frame structure,combined with sixlayer engineering example and three-layer engineering model, mechanical properties and economical efficiency of box strengthen-joint region connection of I-section column for weak axis and the traditional box-shaped column connection with inner curtain were compared.Meanwhile,the connection bearing capacity under monotonic loading and cyclic loading was compared.The results show that the mechanical properties and economical efficiency of box strengthen-joint region connection of I-section column for weak axis is better than traditional box-shaped column connection with inner curtain when the steel frame is in the eight-degree earthquake zone and less than six layers,and the bearing capacity of box strengthen-joint region connection of I-section column for weak axis is also a little better than traditional box-shaped column connection with inner curtain under the monotonic loading and cyclic loading.