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

Korean Tunnelling and Underground Space Association (한국터널지하공간학회)
권호 표지
DOI QR코드

DOI QR Code

A study on the member forces of segmental linings considering key segments

TBM 세그먼트 조립 특성에 따른 부재력 변화 연구

  • Woo, Seungjoo (Dept. of Global Construction Engineering, Sungkyunkwan Univ.) ;
  • Yoo, Chungsik (Dept. of Civil Engineering, Sungkyunkwan Univ.)
  • 우승주 (성균관대학교 글로벌엔지니어링학과) ;
  • 유충식 (성균관대학교 건설환경시스템공학과)
  • Received : 2015.05.04
  • Accepted : 2015.05.20
  • Published : 2015.05.31
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents a numerical study on the effect of segment assembly characteristics on the TBM segmental lining member section forces. Analyses have been carried out through the two-ring beam finite element model by Midas civil 2012+. TBM segment lining member forces are determined by various joint characteristics. In this study, the segmental member forces were investigated with various joint number and orientation at fixed values of joint stiffness, ground spring parameters. The numerical results were used to identify trends of the member forces in the tunnel lining with the segment assembly characteristics.

본 연구는 수치해석을 통하여 TBM 세그먼트의 분할 수와 인접한 링의 이격각도가 라이닝의 부재력에 어떤 영향을 미치는 살펴보았다. 수치해석은 Midas civil 2012+ 프로그램을 사용하였고, 모델링은 2링빔 스프링 모델을 이용하였다. TBM 세그먼드 부재력은 다양한 요소에 의해 결정된다. 본 논문에서는 세그먼트 분할 수와 분포를 제외한 다른 요소인 이음부 스프링 계수, 지반반력계수를 통제하고 특정한 분할 수와 분할 특성을 통해 case를 선정함으로써 분할 수와 분포와 같은 분할 특성이 부재력에 미치는 영향을 분석하였다. 이로써 TBM 세그먼트 시공 설계시 구조적으로 유리하거나 불리한 이음부 특성을 확인할 수 있다.

Keywords

References

  1. Choi, W.Y. (2013), "Study on the segment joint of shield TBM tunnel", Department of civil and environmental system engineering, Graduate school of Konkuk university
  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. https://doi.org/10.9711/KTAJ.2014.16.1.063
  3. Chung, H.S., Kim, D.Y., Kim, J.S. (1999), "A study on the improvement of connection for shield tunnel lining using trapezoidal segments", Journal of the Korean Geotechnical Society, Vol. 15, No. 6, pp. 251-262.
  4. Do, N., Dias, D., Oreste, P., Djeran-Maigre, I. (2013), "2D numerical investigation of segmental tunnel lining behavior", Tunnelling and Underground Space Technology, Vol. 37, pp. 115-127. https://doi.org/10.1016/j.tust.2013.03.008
  5. Duddeck H., Erdmann J. (1985), "Structure design for tunnels", Tunnel82, Proceedings of the 3rd international symposium, Brighton, 7-11 June 1982, pp. 83-91.
  6. Kim, G.S. (2007), "Analysis and structural behavior of shield tunnel lining segment", Department of civil engineering, Graduate school, Pukyong national university.
  7. KTA (2008), 3rd Mechanized tunnel construction tunnel design service Technical Conference, KTA, pp. 3-7, 457-458.
  8. Midas users manual version 2012+ (2012), MIDAS IT Co., Ltd.
  9. Muirwood, A.M. (1975), "The circular tunnel in elastic ground", Geotechnique, 25, No. 1, pp. 115-127. https://doi.org/10.1680/geot.1975.25.1.115
  10. Teachavorasinskun, S., Chub-uppakarn, T. (2010), "Influence of segmental joints on tunnel lining", Tunnelling and Underground Space Technology, Vol. 25, pp. 490-494. https://doi.org/10.1016/j.tust.2010.02.003
  11. Terzaghi, K. (1943), "Theoretical soil mechanics", J. Wiley & Sons, New York.
  12. Yoo, C.S., Choi, J.H. (2014), "Prediction of TBM tunnel segment lining forces using ANN technique". Journal of Korean Tunnel and Underground Space, Vol. 16, No.1, pp. 13-24. https://doi.org/10.9711/KTAJ.2014.16.1.013
  13. 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. https://doi.org/10.9711/KTAJ.2012.14.3.159