NONLINEAR FINITE ELEMENT ANALYSIS ON THE STEEL FRAME WITH SEMI-RIGID CONNECTIONS
In practice most connections of steel frames actually show semi-rigid deformation behavior that can contribute substantially to overall displacements of the structure and to the distribution of member forces. So it is very necessary that studying the behavior of these steel frames with semi-rigid connections. Considering connective, geometrical, and material nonlinear, the stiffness-matrixes equations were proposed and analysis program of steel frame considering semi-rigid connection, geometrical nonlinearity and material nonlinearity has been compiled in Fortran in this paper. Use this program a two-dimensional nonlinear finite element program for steel frame with semi-rigid connection was complied successfully. Atter the internal force and the horizontal displacement of semi-rigid connection steel frame were calculated, its bearing capacity was discussed and the analysis results were compared with the steel structure design code ones, it was used as the collapse characteristic after structural ultimate strength had lost and the appearing orders of plastic hinges and it was reasonably suggested for the design of semi-rigid connection steel frame.At last, some conclusions about effect of joint stiffness on the side sways of the vertices and on the internal force of the vertices in steel frame were obtained in this paper.
Steel frame Semi-rigid node Plastic hinges Nonlinear analysis Finite element
Xin-Wu Wang
Department of Civil Engineering, Luoyang Institute of Science and Technology,Luoyang 471023,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
125-129
2008-10-19（万方平台首次上网日期，不代表论文的发表时间）