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2019 Vol.21, Issue 6 Preview Page

Research Paper

Determination of the coefficient of variation of parameters for the reliability design of shield tunnel segment lining

쉴드 터널 세그먼트 라이닝의 신뢰성 설계를 위한 변수의 변동계수 결정

Yoseph Byun1
,
Do Kim2
,
Seongwon Lee3*
변 요셉1
,
김 도2
,
이 성원3*
1Senior Researcher, Future Infrastructure Research Center, Department of Infrastructure Safety Research, KICT
2Director, Woosung D&C
3Senior Research Fellow, Future Infrastructure Research Center, Department of Infrastructure Safety Research, KICT
1정회원, 한국건설기술연구원 차세대인프라연구센터 수석연구원
2비회원, 우성디앤씨 이사
3정회원, 한국건설기술연구원 차세대인프라연구센터 선임연구위원
* Corresponding Author
30 November 2019. pp. 875-885
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Abstract

This paper is aimed to suggest the coefficient of variation of the total load on the segment lining and the coefficient of variation of earth pressure in reliability based design of shield tunnel. For this purpose, the statistical characteristics of weathered soil and weathered rock were calculated by analyzing the site survey data of the domestic urban section. The coefficient of variation could be estimated by applying these values ​​to Terzaghi’s theory using MCS technique. As a result, the coefficient of variation of rock load for weathered soil and weathered rock was 0.08~0.14. The coefficient of variation for the total load acting on the tunnel was LC1 = 0.38, LC2 = 0.33, and LC3 = 0.37. The proposed coefficients of variation can be used in the reliability-based design of shield tunnel segments.

Keywords
Shield tunnel
Segment lining
Reliability based design
Rock load
Coefficient of variation

본 논문은 쉴드 터널의 신뢰성 기반 설계시에 세그먼트 라이닝에 작용하는 전체 하중에 대한 변동계수와 토압에 대한 변동계수를 제시하였다. 이를 위해 국내 도심지 구간에 해당하는 지반 조사 자료를 분석하여 풍화토 및 풍화암에 대한 통계적 특성치를 산정하였으며, MCS기법을 활용하여 이 값들을 Terzaghi 이론식에 적용하여 변동계수를 산정할 수 있었다. 그 결과, 풍화토 및 풍화암에 대한 이완하중의 변동계수는 0.08~0.14의 범위로 나타났고, 작용하는 전체 하중에 대한 변동계수는 LC1 = 0.38, LC2 = 0.33, LC3 = 0.37이 적절한 것으로 나타났다. 제시된 변동계수는 쉴드 터널의 세그먼트에 대한 신뢰성 기반 설계 시 활용이 가능할 것으로 판단된다.

키워드
쉴드 터널
세그먼트 라이닝
신뢰성 기반 설계
이완하중
변동계수
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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 : 21
  • No :6
  • Pages :875-885
  • Received Date : 2019-09-26
  • Revised Date : 2019-10-22
  • Accepted Date : 2019-10-30
  • DOI :https://doi.org/10.9711/KTAJ.2019.21.6.875
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