논문 상세보기
pp.167-174
The F3D(Free-Form Formwork 3D Printer) technology that manufactures EPS(Expanded Polystyrene) formworks for irregular-shaped concrete structures by 3D printers was developed to reduce the cost and time. Because of weak strength and low elastic modulus of the EPS, structural performance including lateral pressure by fresh concrete of the formwork that consisted of EPS should be investigated. In order to calculate lateral pressures acting on formwork, several variables including sizes, shapes of formwork, tangential force(fricition) between fresh concrete and formwork, and material properties of fresh concrete should be considered. However, current regulations have not considered the properties of concrete, only focused on vertical formwork. Galleo introduced 3-dimensional finite element analysis models to calculate lateral pressure on formwork. Thus, proposed finite element analysis model based on previous studies were verified for vertical formwork and irregular-shaped formwork. The test results were compared with those by FEM analysis. As a result, the test agrees well with the analysis.
1. 서론
2. 해석 모델 개요
2.1 경화 전 콘크리트(Fresh concrete)의 거동
2.2 거푸집과 경화 전 콘크리트의 마찰 모델링
2.3 EPS 폼 라이너 및 거푸집 모델링
2.4 해석의 타당성 확인
3. 비정형 거푸집 측압 측정 실험
3.1 거푸집 설치
3.2 계측 계획
3.3 콘크리트 타설
4. 결과 분석
4.1 일반 부재 유한요소해석 결과
4.2 비정형 부재 측압 계측 결과
4.3 비정형 부재 유한요소해석 결과
5. 결론
감사의 글
References
