면외 변형률 분포의 비선형성을 고려한 RC 기둥의 2차원 해석에 관한 연구

2-dimensional analytical method of RC column considering nonlinearity of strain distribution in out-of-plane direction

The columns with large widths in out-of-plane direction fail showing the high nonlinearity of strain distribution. In order to predict the nonlinear behavior with reasonable accuracy in 2 dimensional analysis the material models taking this characteristic into account are indispensible. In this study equivalent softening model is developed which releases the same amount of energy at failure as that of 3-D analysis. Its validity is confirmed by comparing the analysis result with that of 3-D.