횡구속된 고강도 콘크리트의 구성모델

초록

Since constitutive models developed for confined normal strength concrete give the overestimated ductility when they are applied to confined high strength concrete, these models may not be applicable to confined high strength concrete. In an effort to solve this problem, the accurate stress-strain relationship is needed for the high strength concrete by observing consequence affected to confinement effects with increasing the concrete strength. In this study, a constitutive model is developed to express the stress-strain relationship of confined high strength concrete. The model classified by parameters is suggested from regression analysis related to parameters for strength and ductile behavior of reinforced high strength concrete columns. Twenty-five test specimens were chosen from the reported experimental studies in the literature. The experimental results of stress-strain relationships of show a good agreement with results of the stress-strain relationships of suggested high strength concrete, covering a strength range between 60 and 124 MPa.

키워드