HYSTERETIC BEHAVIOR RESEARCH OF HIGH STRENGTH THROUGH BOLTS-ENDPLATE CONNECTIONS FOR CONCRETE FILLED SQUARE STEEL TUBULAR COLUMN
A new design of high strength through bolts-endplates connections for concrete filled square steel tubular column and steel beams was proposed. A total of 3 pseudo-static experiments had been conducted. The nonlinear finite element analysis involving geometric, material and contact nonlinearities were presented using the ANSYS finite element package. The influences of the axial force ratios, the strength of concrete, the pre-tensioning force of high strength through bolts, the thickness of endplate and the stiffener of endplate on the hysteretic behavior of the connections were systematically studied. The results obtained from the finite element analysis showed that the axial force ratios and the strength of concrete have little influence on the hysteretic behavior of the connections, and the decrease of the pre-tensioning force of high strength through bolts reduces considerably the energy dissipation capacity. The thickness of endplate and the stiffener of endplate have remarkable effect on the hysteretic behavior, and the stiffeners of endplate are more effective than the increase of the thickness of endplate for improving the behavior of the connections. The results obtained from the finite element analysis and the experiments revealed that the connections have excellent strength, stiffness, ductility and energy dissipation capacity.
Concrete-filled square steel tubular column High strength through bolt pseudo-static experiment Nonhnear finite element analysis Connection
Xian-Tie Wang Ji-Ping Hao Guan-Gen Zhou
School of Civil Engineering, Xian University of Architecture & Technology, Xian 710055, P.R. China School of Civil Engineering, Xian University of Architecture & Technology, Xian 710055, P.R. China Zhejiang Southeast Space Frame Stock Ltd., Hangzhou 311209, 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
871-876
2008-10-19（万方平台首次上网日期，不代表论文的发表时间）