• Journal of Korean Society of Steel Construction
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• v.10 no.3 s.36
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• pp.327-338
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• 1998

This paper presents the elastic behavior for panel zone and flange of connection in steel frame pier. The results of stress distributions on a series of experiments and FEM analysis models are reported herein. The investigations show that the shear stresses in the panel zone are varied with sectional-area ratio$(A_f/A_w)$ and also indicate that the nomal stresses in the flange due to the shea lag are significantly higher than the current design procedure. Based on the results, some new proposals considering the design parameters affecting connecting behavior are presented for the evaluations of stresses of panel zone and flange in connection.

• Journal of Korean Society of Steel Construction
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• v.9 no.4 s.33
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• pp.683-695
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• 1997

This paper presents the shear behavior of panel zone in steel frame piers. The results of loading tests on twenty box connections and three types of analysis model are reported herein. It is indicate that the major cause of the reduction of strength and shear deformation capacity (ductility) is the sectional-area ratio and the shear buckling of panel zone. Based on the results, some new proposals are presented for the evalution of strength and ductility of panel zone. This paper is also discussed the ductility of connections by current design procedure.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 1999.10a
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• pp.87-94
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• 1999

The structural behavior of welded steel box columns subjected to axial compression and combined load of axial and horizontal load is described. The nonlinear stress-strain relation of the material and residual stress resulted from welds were included in the analysis. Inelastic buckling analysis of hollow rectangular sections of various width-thickness and slenderness ratios was carried out using the semi-analytical and spline finite strip method to investigate the local and global bucking stress and mode interaction. The buckling stress was compared with test results and design curves. Post-buckling behavior was traced by the finite element program(ADINA) and compared with experimental results. The comparison showed that the ultimate stress can be used for the design purpose.