The development of a back analysis program for subsea tunnel stability under operation: longitudinal direction

Joon-Sang An; Byung-Chan  Kim; Hyun-Koo  Moon; Ki-Il  Song

doi:10.9711/KTAJ.2016.18.6.545

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2016 Vol.18, Issue 6 Preview Page Next Page

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

30 November 2016. pp. 535-544

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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.

Keywords

Beam-spring model

Differential evolution algorithm (DEA)

Back analysis

Operating subsea tunnel

Longitudinal direction tunnel

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 모델 기반의 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.

키워드

빔-스프링 모델

차분진화 알고리즘(DEA)

역해석

운영 중 해저 터널

종단방향 터널

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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 : 18
No :6
Pages :535-544
Received Date : 2016-11-03
Revised Date : 2016-11-18
Accepted Date : 2016-11-24
DOI :https://doi.org/10.9711/KTAJ.2016.18.6.545

Journal of Korean Tunnelling and Underground Space Association ISSN:2233-8292(Print) 2287-4747(Online) 한국터널지하공간학회 논문집

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