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A study on the factors influencing the segment lining design solved by beam-spring model in the shield tunnel

쉴드 터널 세그먼트 라이닝 설계에서 빔-스프링 구조 모델이 단면력에 미치는 영향

Hong-moon Kim1
,
Hyun-su Kim2
,
Kyung-mi Shim3
,
Sung-youll Ahn4*
김 홍문1
,
김 현수2
,
심 경미3
,
안 성률4*
1Executive Director, Dept. of Geotechnical Engr., Pyunghwa Engineering Consultants Ltd.
2Director, Dept. of Geotechnical Engr., Pyunghwa Engineering Consultants Ltd.
3Dept. of Geotechnical Engr., Pyunghwa Engineering Consultants Ltd.
4President, SYTEC Co., Ltd.
1㈜평화엔지니어링 지반부 전무
2㈜평화엔지니어링 지반부 이사
3㈜평화엔지니어링 지반부 과장
4㈜에스와이텍 대표이사
*교신저자. *Corresponding Author. 
31 March 2017. pp. 179-194
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Abstract

The segment lining design for shield tunnel is generally carried out by using the beam- spring model and the induced member forces from the model are strongly influenced by the components of the model such as imposed load, coefficient of subgrade reaction, location of segment joint and its stiffness.

The structural models and stiffness of its connection part found used in abroad design cases is usually obtained as it is for the domestic design of segment of shield tunnel. Those models and stiffness in existing design cases are conventionally applied to a new tunnel design without any suitability review for the project.

In this study, the application method of base components of the model such as the coefficient of subgrade reaction and modelling method to the segment lining design was suggested by carrying out the comparative study of the base elements for the member forces estimation of segment lining of shield tunnel.

Keywords
세그먼트 라이닝
지반반력계수
구조해석 모델
이음부 강성

쉴드터널의 세그먼트 라이닝 단면 설계는 일반적으로 빔-스프링 모델을 사용하여 이루어지며, 산정되는 단면력은 모델 구성요소인 작용하중, 지반반력계수, 세그먼트 조인트 위치 및 강성 등의 영향을 받는다.

국내 쉴드터널 세그먼트라이닝의 설계는 해외에서 사용되고 있는 구조해석 모델과 이음부 강성을 주로 이용하고 있으며, 기존 설계에서 사용하고 있는 구조해석 모델이나 조인트 강성을 적합여부 검토 없이 관행적으로 사용해오고 있다.

본 연구에서는 쉴드터널 세그먼트 라이닝의 부재력을 산정하기 위해 필요한 지반반력계수, 모델링 방법 등 빔-스프링 모델의 기본 구성요소들에 대한 비교 검토를 통하여 세그먼트 라이닝 설계법을 구성하는 기본 요소들의 적용방법을 제안하였다.

키워드
Segment lining
Coefficient of subgrade reaction
Structural modeling
Joint stiffness
References
1
1.Lee, Y.J., Lee, H.S., Chang, S.B., Kim, W.S. (2010), “A Study on the Design of Shield Tunnel Segment Lining Structure”, Journal of Yooshin Technology, Vol. 17. pp. 106-116.
2
2.Choi, W.Y., Park, J.D., Lee, S.W. (2014), “Influence of the joint stiffness on the segment design”, Journal of Korean Tunnelling and Underground Space Society, Vol. 16, No. 1, pp. 63-74.
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3.Yoo, C.S., Jeon, H.M. (2012), “A comparative study on methods for shield tunnel segment lining sectional forces”, Journal of Korean Tunnelling and Underground Space Society, Vol. 14, No.3, pp. 159-181.
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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 : 19
  • No :2
  • Pages :179-194
  • Received Date : 2017-03-07
  • Revised Date : 2017-03-14
  • Accepted Date : 2017-03-16
  • DOI :https://doi.org/10.9711/KTAJ.2017.19.2.179
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