EXPERIMENT ON CYCLIC BEHAVIOR OF ENLARGED BEAM FLANGE REINFORCED CONNECTION OF STEEL MOMENT-RESISTING FRAMES
Enlarged beam flange reinforced connection of steel moment-resisting frame is one of reinforced forms to improve its seismic performance. Based on the suggestion of Recommendation for Design of Connections in Steel Structures of Japan, the details and design formulae of steel moment resistant frame connections reinforced by haunch enlarged beam flanges welded to the column diaphragm were put forward in this paper. Then, four half-scale T-shape specimens were designed based on the Chinese relevant codes and above formulae with enlarged flanges of H-shape beam welded to the diaphragm of diaphragm-through type box-section columns, with the variety of the width-to-thickness ratio of beam flange and web, and different types of reinforcement considered.The experiment was carried out under cyclic beam bending with constant axial compression on column. The test results revealed that the connections of this reinforcement type had a good performance of the strength and rigidity, and satisfied the demand of current Chinese Code on Seismic Design of Buildings. However, the plastic rotation was limited and could not fully satisfy the demand of special moment resisting-frames, so the details of this reinforced type of connections need further improvement when used in high seismic region.
Enlarged beam flange Diaphragm-through type Cyclic behaviour Plastic rotation
Ming-Zhou Su Ji Miao Zhan-Ke Liu
Key Laboratory of Structural Engineering and Earthquake Resistance of Ministry of Education, Xian U College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000,P.R. China
国际会议
第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)
长沙
英文
883-888
2008-10-19（万方平台首次上网日期，不代表论文的发表时间）