Local Buckling Behaviors of Flat-Type Stiffeners in Stiffened Plate System

보강판시스템에 적용되는 판형보강재의 국부좌굴거동

  • Received : 2013.10.30
  • Accepted : 2013.12.05
  • Published : 2013.12.31


Elastic and nonlinear ultimate strength analyses were conducted to examine the effects of the stiffness and slenderness of flat-type stiffeners on ultimate in-plane strengths of a stiffened plate system. Although it is not feasible to consider local buckling in the stiffeners in elastic analysis, it was confirmed that the in-plane strengths of the stiffened plate system can be achieved by antisymmetric buckling mode when a certain level of stiffness in the stiffeners is provided. Nonlinear ultimate strength analysis, in which initial imperfection and residual stress are incorporated, showed that the ultimate strengths are sensitively affected by the mode shapes for initial imperfections. The slenderness limit for flat-type stiffeners in KHBDC (Korean Highway Bridge Design Code) was evaluated as conservative compared to the analysis results.


Flat-type stiffener;Stiffened plate;Buckling;Initial imperfection;Residual stress


Supported by : 청주대학교


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