A Study on Shield Tunnel Assembling System Using a Cable and Island-Type Shear Key

Sang-Joon Ma; Young-Sub Lee; Dong-Min Kim

doi:10.7843/kgs.2015.31.3.17

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2015 Vol.31, Issue 3 Preview Page Next Page

A Study on Shield Tunnel Assembling System Using a Cable and Island-Type Shear Key 강연선과 아일랜드타입 전단키를 이용한 쉴드터널 체결기술 연구

31 March 2015. pp. 17-25

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Abstract

In this study, a new segment assembling method using cable tensible force and island-type shear key was developed to improve the problems of bolt assembling method of shield tunnel. The bolting system and island-type shear key system were compared to analyze the mechanical behavior that occurs in the segment. The study results obtained from structural investigation and numerical analysis technique showed that the shear strength of island-type shear key is higher than that of the bolt system. With the increase of the tensile strength, it is expected that the stability of the segment will be secured.

Keywords

Shield tunnel

Assembling system

Island-type shear key

Tensile strength

Shear strength

본 연구에서는 볼트체결을 이용한 쉴드터널 세그먼트의 체결방식의 문제점을 보완하기 위해 새로운 세그먼트 체결기술을 개발하였다. 개발된 체결방식과 볼트체결방식에 대하여 구조검토와 수치해석 기법을 통해 세그먼트에 발생하는 역학적 거동을 평가하였다. 아일랜드타입 전단키는 기존 세그먼트 체결방식의 고인장력 볼트보다 높은 전단강도를 확보하였으며, 강연선에 의한 인장강도의 증대로 세그먼트 전체의 안정성 증가를 기대할 수 있을 것으로 판단된다.

References

1.Chung, J.S., Oh, S.J., Boo, S.D., and Koo, H.S. (2000), “A Study on Prestressing Order of Tendons for Girder Bridges”, Proc. of 2000 conf. on Korean Society of Civil Engineers., pp.51-54.

2.Chung, H.S., Kim, J.S., and Kim, D.Y. (2000), “Stability of the Connections of Trapezoidal Segments Lining in Shield Tunnelling”, Journal of the Korea Society of Civil Engineers, Vol.20, No.1-C, pp.13-20.

3.Ha, S.S., Cho, K.R., Kim, S.H., Moon, J.H., and Lee, L.H. (2004), “An Experimental Study on the Structural Behavior of the PC Beam-Column Exterior Joint with Strand”, Journal of Architectural Institute of Korea Structure & Construction, Vol.20, No.10, pp. 119-126.

4.Jeong, G.H., Yu, C.D., Cho, S.H., Hwang, B.S., Han, K.T., Kim, T.H., and Jung, D.W. (2004), “A Trend Study of Shield Tunnel on Japan & Korea”, Proc. of KTA 2004 Symposium, Seoul, Korea, pp.175-196.

5.Ma, S.J., Gil, H.J., and Kim, D.M. (2012), “A Study on Prestressing Method for Shield tunnel Assembly Using Strands”, Proc of 2012 Conf. on Korean Society of Civil Engineers, KSCE, pp.1338-1345.

6.Ma, S.J., Gil, H.J., and Kim, D.M. (2013), “A Study on the Improve-ment of Connection Method for Segment in Tunnel Lining System Using Prestressed Steel Cable by Real-scale Test”, Journal of Korean Geotechnical Society, Vol.29, No.6, pp.33-51.

Information

Publisher :The Korean Geotechnical Society
Publisher(Ko) :한국지반공학회
Journal Title :Journal of the Korean Geotechnical Society
Journal Title(Ko) :한국지반공학회 논문집
Volume : 31
No :3
Pages :17-25
Received Date : 2014-12-05
Revised Date : 2015-02-02
Accepted Date : 2015-03-25
DOI :https://doi.org/10.7843/kgs.2015.31.3.17

Journal of the Korean Geotechnical Society ISSN:1229-2427(Print) 2288-646X(Online) 한국지반공학회 논문집

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