الفهرس | Only 14 pages are availabe for public view |
Abstract The use of thin-walled sections has widely increased during the last several decades around the world. In this study a nonlinear finite element model is presented to study the behavior of thin-walled 1section beam-columns. A verification of the presented finite element model bas been done by comparing the finite element results with the results of some experimental studies. A parametric study is performed using the finite element model taking into consideration both the geometric and material nonlinearities. Interaction curves for the studied I-section beam-columns have been presented. The influences of the web width-to-thickness .ratio, flange outstanding-to-thickness ratio and moment to normal force ratio on the ultimate strength of the beamcolumns have been presented diagrammatically. The effect of the different studied parameters on the behavior of beam-columns has been discussed. Different interaction equations used by the AISI- 1”996 and ECP-200J have been presented. A comparison between the interaction diagrams plotted using the finite element results, AISI-1996 and ECP- 2001 has been carried out. A proposed design method for thin-walled T- section beam-columns, based on this finite element results, has been introduced. |