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Evaluation of Post-Buckling Residual Strength of H-Section Steel Column for Both Ends are Fixed Condition

양단고정 단부구속에 따른 H 형 강재기둥의 좌굴 후 잔존내력 평가

  • Received : 2012.06.25
  • Accepted : 2012.09.17
  • Published : 2013.01.01

Abstract

Progressive collapse is a chain reaction of failures propagating throughout a portion of a structure that is disproportionate to the original local failure. When column members are subjected to unexpected load (compression load), they will buckle if the applied load is greater than the critical load that induces buckling. The post-buckling strength of the columns will decrease rapidly, but if there is enough residual strength, the members will absorb the potential energy generated by the impact load to prevent progressive collapse. Thus, it is necessary to identify the relationship of the load-deformation of a column member in the progressive collapse of a structure up to final collapse. In this study, we carried out nonlinear FEM analysis and based on deflection theory, we investigated the load-deformation relationship of H-section steel columns when both ends were fixed.

Keywords

Fixed Ended Column;Post-Buckling Residual Strength;Plastic Deformation;Non-Linear FEA

Acknowledgement

Supported by : 한국연구재단

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  1. Study on inelastic buckling and residual strength of H-section steel column member vol.15, pp.2, 2015, https://doi.org/10.1007/s13296-015-6008-3