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2021 Vol.23, Issue 2 Preview Page

Technical Note

Analysis of support loads in large underground space for high-density arrangement of complex plant

복합플랜트 고집적 배치를 위한 지하대공간 지지하중 해석

Sewon Kim1
,
Jun Kyung Park2
,
Sangjun Lee3
,
YoungSeok Kim4*
김 세원1
,
박 준경2
,
이 상준3
,
김 영석4*
1Researcher, Dept. of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology
2Assistant Professor, Dept. of Civil & Environmental Engineering, Daelim University College
3Vice-President, ANTS E&C Inc.
4Research Fellow, Dept. of Infrastructure Safety Research, Korea Institute of Civil Engineering and Building Technology
1비회원, 한국건설기술연구원 인프라안전연구본부 연구원
2정회원, 대림대학교 토목환경과 조교수
3비회원, 앤츠이엔씨(주) 부사장
4비회원, 한국건설기술연구원 인프라안전연구본부 연구위원
*Corresponding Author
31 March 2021. pp. 77-92
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Abstract

For the construction of a large underground space with a complex plant installed, it is necessary to analyze the stability considering the ground conditions and various load conditions. In this paper, finite element analysis was performed to analyze the support load that can be used in the design of a large underground space for high-density arrangement of complex plant. An analysis of underground continuous wall (D-wall) was performed considering the load and horizontal earth pressure in the large underground space. In addition, foundation ground analysis was carried out according to the load condition of the complex plant. In order to shorten the construction period, increase the space layout utilization, and secure the stability of the plant structure when installing the complex plant underground, the pipe rack module structure analysis was conducted. This study proposes a design and construction method for the optimal arrangement of underground complex plants using the analysis results.

Keywords
Underground space
Complex plant
Continuous wall
Pipe rack
Finite element analysis

고도의 기술 및 시설이 집약된 복합플랜트 설치 지하대공간 건설을 위해서는 지반 조건 및 다양한 하중 조건에 따른 안정성 검토가 필요하다. 본 논문에서는 유한요소해석을 활용하여 복합플랜트의 고집적 배치를 위한 지하대공간 설계에 활용할 수 있는 해석조건(설계조건)을 검토하였다. 지하대공간 상부하중 및 수평토압을 고려한 지하연속벽체 해석, 복합플랜트 하중 조건에 따른 기초 지반의 변위 및 응력변화 검토, 복합플랜트 지하 설치 시 공사기간 단축 및 공간 레이아웃 활용성을 높이며 플랜트 구조물의 안정성을 확보하기 위한 파이프랙 모듈 구조해석을 수행하였다. 다양한 해석결과를 바탕으로 상세설계 및 시공단계에서 고려해야 할 요소들을 검토하였다. 해석 결과를 통해 지하공간 연속벽체 원형배치가 사각배치 경우보다 수평 변위가 적게 나타남을 확인하였고, 복합플랜트 외부 프레임 하중지지 구조해석 결과 설계 안정성에 관한 시사점을 도출하였다.

키워드
지하대공간
복합플랜트
지하연속벽체
파이프랙 모듈
유한요소해석
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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 : 23
  • No :2
  • Pages :77-92
  • Received Date : 2021-01-28
  • Revised Date : 2021-02-24
  • Accepted Date : 2021-02-24
  • DOI :https://doi.org/10.9711/KTAJ.2021.23.2.077
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