RAP 콘크리트의 비선형 응력-변형률 특성이 강성포장 구조해석에 미치는 영향
(주)코리아스칼라
- 최초 등록일
- 2023.04.05
- 최종 저작일
- 2017.02
- 8페이지/ 어도비 PDF
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서지정보
ㆍ발행기관 : 한국도로학회
ㆍ수록지정보 : 한국도로학회논문집 / 19권 / 1호
ㆍ저자명 : Kim, Kukjoo, Chun, Sanghyun, Park, Bongsuk, Tia, Mang
영어 초록
PURPOSES: This study is primarily focused on evaluating the effects of the non-linear stress-strain behavior of RAP concrete on structural response characteristics as is applicable to concrete pavement. METHODS : A 3D FE model was developed by incorporating the actual stress-strain behavior of RAP concrete obtained via flexural strength testing as a material property model to evaluate the effects of the non-linear stress-strain behavior to failure on the maximum stresses in the concrete slab and potential performance prediction results. In addition, a typical linear elastic model was employed to analyze the structural responses for comparison purposes. The analytical results from the FE model incorporating the actual stress-strain behavior of RAP concrete were compared to the corresponding results from the linear elastic FE model. RESULTS : The results indicate that the linear elastic model tends to yield higher predicted maximum stresses in the concrete as compared to those obtained via the actual stress-strain model. Consequently, these higher predicted stresses lead to a difference in potential performance of the concrete pavement containing RAP. CONCLUSIONS : Analysis of the concrete pavement containing RAP demonstrated that an appropriate analytical model using the actual stress-strain characteristics should be employed to calculate the structural responses of RAP concrete pavement instead of simply assuming the concrete to be a linear elastic material.
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