- 권한신청
- P-ISSN2233-8292
- E-ISSN2287-4747
- KCI
ISSN : 2233-8292
차수용 박층 멤브레인 설치에 따른 콘크리트 라이닝의 구조적 보강효과에 관한 수치해석 연구
Numerical study on structural reinforced effects of concrete lining by spray-applied waterproofing membrane
이기철 (인천대학교 건설환경공학과)
김동욱 (인천대학교)
최순욱 (한국건설기술연구원 연구원)
강태호 (한국건설기술연구원)
장수호 (한국건설기술연구원)
초록
차수용 박층 멤브레인은 폴리머를 주요 구성성분으로 하는 재료로서 높은 부착성능과 시공성을 특징으로 하는 방수 재료이다. 차수용 박층 멤브레인은 일반적으로 콘크리트 또는 숏크리트 라이닝과 일체화되어 복합 구조체 형태로 방수 기능을 발현하는 재료이다. 본 연구에서는 지하구조물의 대표적인 구조물인 터널에서 차수용 박층 멤브레인 타설이 가능한 콘크리트 라이닝 재료에 차수용 박층 멤브레인을 적용할 경우 콘크리트 라이닝의 거동 변화를 수치해석적 방법으로검토하였다. 콘크리트 라이닝의 거동은 3점 휨 시험을 수행하는 것으로 가정하고 이때 발생한 하중-변위 관계를 통해 콘크리트 라이닝의 최대 휨 하중 변화와 항복 이후 변화를 검토하는 방법으로 연구를 수행하였다. 해석결과, 콘크리트 라이닝에 차수용 박층 멤브레인 시공을 통해 고려할만한 보강효과를 확인하였다.
- keywords
- 차수용 박층 멤브레인, 접촉 거동, 수치해석, 터널, 보강, Spray-applied waterproofing membrane, Contact behavior, Numerical analysis, Tunnel, Reinforcement
Abstract
A spray-applied waterproofing membrane which consists of polymers has a relatively higher constructability and adhesion than the conventional sheet-type waterproofing materials. And the spray-applied waterproofing membrane generally shows a waterproofing ability as a composite structure with shotcrete or concrete lining. Because its purpose is waterproofing at the structure, structural effects were not well reported than waterproofing abilities. In this study, structural effects of the membrane-attached concrete lining were evaluated using 3-point bending test by the numerical method. From the analysis, a load-displacement behavior of the concrete lining and fracturing energy after yielding were compared with various conditions. Consequently, concrete lining with spray-applied waterproofing membrane shows more higher flexural strength and fracturing energy than the single-layer concrete lining.
- keywords
- 차수용 박층 멤브레인, 접촉 거동, 수치해석, 터널, 보강, Spray-applied waterproofing membrane, Contact behavior, Numerical analysis, Tunnel, Reinforcement
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