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Numerical study on structural reinforced effects of concrete lining by spray-applied waterproofing membrane

차수용 박층 멤브레인 설치에 따른 콘크리트 라이닝의 구조적 보강효과에 관한 수치해석 연구

Chulho Lee1*
,
Kicheol Lee2
,
Dongwook Kim2
,
Dongwook Kim3
,
Soon-Wook Choi4
,
Tae-Ho Kang5
,
Soo-Ho Chang6
이 철호1*
,
이 기철2
,
김 동욱2
,
김 동욱3
,
최 순욱4
,
강 태호5
,
장 수호6
1Research Specialist, Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology
2Graduate Student, Dept. of Civil and Environment Engineering, Incheon National University
3Assistant Professor, Dept. of Civil and Environment Engineering, Incheon National University
4Research Specialist, Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology
5Budding Researcher, Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology
6Senior Research Fellow, Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology
1한국건설기술연구원 지반연구소 전임연구원
2인천대학교 건설환경공학과 석사과정
3인천대학교 건설환경공학과 조교수
4한국건설기술연구원 지반연구소 전임연구원
5한국건설기술연구원 지반연구소 신진연구원
6한국건설기술연구원 지반연구소 선임연구위원
*교신저자. *Corresponding Author. 
31 May 2017. pp. 551-565
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Abstract

A spray-applied waterproofing membrane which consists of polymers has a relatively higher constructability and adhesion than the conventional sheet-type waterproofing materials. Additionally, 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 higher flexural strength and fracturing energy than the single-layer concrete lining.

Keywords
Spray-applied waterproofing membrane
Contact behavior
Numerical analysis
Tunnel
Reinforcement

차수용 박층 멤브레인은 폴리머를 주요 구성성분으로 하는 재료로서 높은 부착성능과 시공성을 특징으로 하는 방수 재 료이다. 차수용 박층 멤브레인은 일반적으로 콘크리트 또는 숏크리트 라이닝과 일체화되어 복합 구조체 형태로 방수 기 능을 발현하는 재료이다. 본 연구에서는 지하구조물의 대표적인 구조물인 터널에서 차수용 박층 멤브레인 타설이 가능 한 콘크리트 라이닝 재료에 차수용 박층 멤브레인을 적용할 경우 콘크리트 라이닝의 거동 변화를 수치해석적 방법으로 검토하였다. 콘크리트 라이닝의 거동은 3점 휨 시험을 수행하는 것으로 가정하고 이때 발생한 하중-변위 관계를 통해 콘 크리트 라이닝의 최대 휨 하중 변화와 항복 이후 변화를 검토하는 방법으로 연구를 수행하였다. 해석결과, 콘크리트 라이 닝에 차수용 박층 멤브레인 시공을 통해 고려할만한 보강효과를 확인하였다.

키워드
차수용 박층 멤브레인
접촉 거동
수치해석
터널
보강
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Information
  • Publisher :Korean Tunneling and Underground Space Association
  • Publisher(Ko) :한국터널지하공간학회
  • Journal Title :Journal of Korean Tunnelling and Underground Space Association
  • Journal Title(Ko) :한국터널지하공간학회 논문집
  • Volume : 19
  • No :3
  • Pages :551-565
  • Received Date : 2017-05-04
  • Revised Date : 2017-05-17
  • Accepted Date : 2017-05-23
  • DOI :https://doi.org/10.9711/KTAJ.2017.19.3.551
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