Journal of the Korean Geosynthetics Society (한국지반신소재학회논문집)

Korean Geosynthetics Society (한국지반신소재학회)
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Analysis Study of Diaphragm Wall by Construction Process of Large Underground Space for Complex Plant Installation

복합플랜트 설치를 위한 지하 대공간 건설 공정별 연속벽체 해석 연구

  • Kim, Sewon (Department of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology) ;
  • Park, JunKyung (Dept. of Civil & Environmental Engr., Daerim University College) ;
  • Kim, YoungSeok (Northern Infrastructure Specialized Team, Korea Institute of Civil Engineering and Building Technology)
  • Received : 2022.08.25
  • Accepted : 2022.08.31
  • Published : 2022.09.30
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Abstract

Underground environmental infrastructure and energy production facilities, which are recognized as avoidable facilities such as landfills, are emerging as an important social issue due to urbanization and economic growth. It is necessary to analyze the stability according to various ground conditions and load conditions for the construction of large-scale underground complex plants. In this paper, horizontal/vertical displacement and stress distribution according to the load condition and construction process were analyzed using finite element analysis (FEM), Based on the analysis results of various conditions, factors to be considered in the detailed design and construction of the underground complex plant were reviewed and the implications on design factors (Intermediate wall installation status, Pre-reinforcing area, etc.) for underground large space construction were derived.

최근 도시화 및 경제 성장에 따라 기피시설로 인식되는 소각장, 매립지와 같은 지상 환경 기초 시설의 지하화에 대한 요구가 증대하고 있다. 대규모 지하 복합플랜트 건설을 위해서는 다양한 지반 조건 및 하중 조건에 따른 안정성 검토가 필요하다. 본 논문에서는 유한요소해석(FEM)을 활용하여 지하 대공간 상부하중과 수평토압을 고려한 지하연속벽체 건설 공정에 따른 수평, 연직 변위 및 응력 발생 경향을 분석하였다. 다양한 조건의 해석 결과를 바탕으로 지하 복합플랜트 상세설계 및 시공단계에서 고려해야 할 요소들을 검토하고, 지하 대공간 건설을 위한 설계인자(중간벽체 설치 유무, 사전 보강 영역 등)에 관한 시사점을 도출하였다.

Keywords

Acknowledgement

본 연구는 국토교통부 국토교통과학기술진흥원 '지하공간활용 도시기반 복합플랜트 실증연구 사업'의 "환경기초 복합플랜트 지하공간 활용 기술(과제번호 22UGCP-B157945-03)" 과제에 의해 수행 되었으며 이에 감사드립니다.

References

  1. Hong, W. P. and Kang, C. J. (2010), "Lateral Earth Pressure to Design Diaphragm Walls Applied to Top Down Construction Method", Korean Society of Civil Engineering, pp.1672-1675. (in Korean)
  2. Kim, S. W., Park, J. K., Lee, S. J. and Kim, Y. S. (2021), "Analysis of support loads in large underground space for high-density arrangement of complex plant", Journal of Korean Tunnelling and Underground Space Association, Vol.23, No.2, pp.77-92. (in Korean) https://doi.org/10.9711/KTAJ.2021.23.2.077
  3. Lee, J. I., Cho, Y. M. and Hong, I. S. (2015), "Strategies for the Effective Use of Energy in Environmental Facilities in Gyeonggi-do", Policy Research, pp.1-144. (in Korean)
  4. Lee, S. H., Kim, J. M., Kim, S. I. and Chank, B. S. (2002), "Back Analysis of the Earth Wall in Multi-layered Subgrade", Journal of the Korean Geotechnical Society, Vol.18, pp.71-78. (in Korean)
  5. Park, J. D., Ahn, C. K., Kim, D. Y. and Lee, S. W. (2016), "Experimental study on the behavior of retaining wall according to underground excavation distance", Journal of Korean Tunneling and Underground Space Association, Vol.18, No.2, pp.155-164. (in Korean) https://doi.org/10.9711/KTAJ.2016.18.2.155
  6. Park, J. D., Yu, J. S., Kim, D. Y. and Lee, S. W. (2015), "Experimental study on the ground movement due to consecutive construction of retaining wall and underground space in cohesionless soil", Journal of Korean Tunneling and Underground Space Association, Vol.17, No.3, pp.267-281. (in Korean) https://doi.org/10.9711/KTAJ.2015.17.3.267
  7. Seo, H. J., Lee, K. H., Han, S. I. and Lee, I. M. (2012), "A numerical study of pillar reinforcing effect in underground cavern underneath existing structures", Journal of Korean Tunneling and Underground Space Association, Vol.14, No.5, pp.453-467. (in Korean) https://doi.org/10.9711/KTAJ.2012.14.5.453