PREDICTION OF INITIAL STIFFNESS OF SEMIRIGID STEEL BEAM-TO-COLUMN CONNECTIONS WITH BOLTS AND ANGLES
The objectives of this paper are to investigate the pattern of contact between angle and column in the vicinity of bolts for semi-rigid steel beam-to-column connections with bolts and angles, and propose a mechanical model for initial stiffness reduction calculation and derive a new formula to calculate initial stiffness of the connections. In this study a nonlinear separation curve in the contact between angle and column is observed and used as foundation to develop an initial stiffness formula. Results calculated using the proposed initial stiffness formula are compared with numerical results from finite element analysis and comparison shows error within ±10%. Results calculated using the proposed formula are also compared with some lab test results. The comparison with lab test results is not as good as comparison with numerical results because lab test instruments were chosen for ultimate strength measurement with large deformation and were not very accurate for small displacement as well as initial stiffness measurement.
Semi-rigid connection high strength bolt steel frame initial stiffness
X.G. Lin N. Hamamoto
Dept. of Architecture, Osaka Institute of Technology, Osaka, Japan Logistics & Automation Division, Murata Machinery, Ltd. Inuyama, Japan
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）