T-Joints in Rectangular Hollow Sections Subject to Combined Bending andConcentrated Force

摘要

An extensive test program on a range of cold-formed rectangular and square hollowsections subjected to combined bending and concentrated force is described. The concentrated force was applied by welding a square hollow section (called the branch member) to the center of the member under test (called the chord member) and perpendicular to it. The chord member was simply supported with the concentrated force at the center of the span. The span was varied in order to determine the interaction relationship between bending moment and concentrated force. Tests under pure moment and pure concentrated force were performed for control purposes. The results are compared with the design procedures in the AISI-1986 Specification, Australian Standard AS1538-1988, the CIDECT Monograph No. 6 and other proposed procedures. In addition, a comparison with plastic mechanism models is provided.