火灾下钢管混凝土梁柱节点性能研究若干问题探讨

SEVERAL KEY ISSUES IN THE PERFORMANCE OF CONNECTIONS TO CONCRETE FILLED STEEL TUBULAR BEAM- COLUMNS IN FIRE CONDITION

随着钢管混凝土在土木工程中的不断推广应用,其构件、节点乃至结构体系耐火性能的研究以及耐火极限的确定已引起人们的广泛关注.简述了钢结构梁柱节点火灾下力学性能的研究现状,在此基础上探讨了钢管混凝土梁柱节点抗火性能研究中需要关注的若干关键问题.

With the increasing use of concrete filled steel tubular （CFT） columns in building structures, the performance of this type of construction in fire, including the composite members, connections and the structural system is being a critical issue. It is presented state-of-the art review of research on the behaviour of steel beam-column connections in fire. Based on the research experiences of steel connections, it has been identified a number of key issues that affect the fire resistant pcrformance of connections to concrete filled steel tubes.