Journal of Korean Tunnelling and Underground Space Association (한국터널지하공간학회 논문집)

Korean Tunnelling and Underground Space Association (한국터널지하공간학회)
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The development of a back analysis program for subsea tunnel stability under operation: longitudinal direction

운영 중 해저 터널의 안정성 평가를 위한 역해석 프로그램 개발: 종단방향

  • An, Joon-Sang (INHA University, Graduate student, Dept. of Civil Engineering) ;
  • Kim, Byung-Chan (HANYANG University, Dept. of Natural Resources and Environmental Engineering) ;
  • Moon, Hyun-Koo (HANYANG University, Dept. of Natural Resources and Environmental Engineering) ;
  • Song, Ki-Il (INHA University, Graduate student, Dept. of Civil Engineering)
  • 안준상 (인하대학교 토목공학과) ;
  • 김병찬 (한양대학교 자원환경공학과) ;
  • 문현구 (한양대학교 자원환경공학과) ;
  • 송기일 (인하대학교 토목공학과)
  • Received : 2016.11.03
  • Accepted : 2016.11.24
  • Published : 2016.11.30
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Abstract

If a back analysis is used in various measurement information for the estimation of an operating subsea tunnel safety, it is possible to obtain the results within efficient error rate. With such a commercial geotechnical analysis program as FLAC3D, back analysis is performed with a DEA which was validated in previous studies. However, there is a problem that is relatively a time-consuming analysis. For this reason, beam-spring model-based FEM solver which takes shorter relative analysis time, was developed by Python language, and then combined with the built-DEA. In order to consider the assessment of safety of an operation tunnel near real-time, a program for longitudinal direction tunnel was developed due to its relative easy development for analysis solver engine.

운영 중 해저 터널의 안정성 평가에 다양한 계측 정보를 사용해서 역해석하면, 효율적인 오차율 이내의 결과를 획득할 수 있다. 선행 연구에서 검증된 차분진화 알고리즘 기반의 역해석 수행 시 FLAC3D 등 범용 지반해석 프로그램을 사용했지만, 상대적으로 해석시간이 오래 걸리고, 제어가 어려운 단점이 있다. 이러한 이유로, 상대적으로 해석시간이 짧게 소요되는 beam-spring 모델기반의 FEM solver를 Python 언어로 개발하여, 기구축된 차분진화 알고리즘과 결합하였다. 계측 데이터로부터 실시간에 가깝게 운영 중 터널의 안정성 평가가 가능할 것으로 판단되며, 우선 솔버 개발에 용이한 종단방향 터널에 대해서 프로그램을 개발하였다.

Keywords

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