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An Improved Stability Design of Plane Frames using System Buckling and Second-order Elastic Analysis  

Song, Ju-Young (성균관대학교 토목환경공학과)
Kyung, Yong-Soo (성균관대학교 토목환경공학과)
Kim, Nam-Il (성균관대학교 토목환경공학과)
Kim, Moon-Young (성균관대학교 토목환경공학과)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.18, no.2, 2005 , pp. 159-168 More about this Journal
Abstract
An improved stability design method for beam-columns of plane frames is proposed based on system buckling analysis and second-order elastic analysis. For this, the tangent stiffness matrix of beam-column elements is first derived using stability functions and a procedure for evaluating effective buckling lengths is reviewed using elastic system buckling analysis. And then the second-order analysis procedure is presented considering $P-\Delta$ effects and is compared with the closed-form solution through numerical examples. Design examples showing the validity of the proposed method we presented and their numerical results are compared with those obtained from the conventional stability design methods. Finally some useful conclusions are drawn.
Keywords
plane frame; buckling analysis; effective buckling length; beam-column element; second-order elastic analysis;
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