Influence of the joint stiffness on the segment design

Woo-Yong Choi; Jong-Deok Park; Seok-Won Lee

doi:10.9711/KTAJ.2014.16.1.063

All Issue

2014 Vol.16, Issue 1 Preview Page Next Page

Influence of the joint stiffness on the segment design 이음부 강성계수가 세그먼트 설계에 미치는 영향

31 January 2014. pp. 63-74

PDF XML

Abstract

The lining of shield TBM tunnel is composed of segments, therefore segment joints are induced by connecting each segment. Segment joint is considered as joint stiffness in the design of TBM tunnel. Depending on the choice among the different stiffness equations, the joint stiffness values determined can be varied largely. Therefore, the influence of joint stiffness value on the design of segment lining should be verified. In this study, the joint stiffness values were determined firstly by using various equations and total change boundary was justified. Within the change boundary determined, the member forces were calculated by changing the joint stiffness through the numerical analysis and consequently the stability of segment lining was investigated by applying nominal strength. The results showed that the segment joint stiffness did not affect the design of segment lining largely.

Keywords

Joint stiffness

Segment joint

Shield TBM

Segment lining

쉴드 TBM 터널의 라이닝은 세그먼트로 구성되므로, 각각의 세그먼트가 서로 연결되면서 세그먼트 이음부를 발생시킨다. 세그먼트 이음부는 쉴드 TBM 설계에 있어 강성계수로 적용되어지는데, 세그먼트 이음부 강성계수는 그 결정 방법에 따라 결과 값이 현저한 차이를 보인다. 따라서 서로 다른 강성계수를 설계에 적용하였을 경우 그 결과가 어떻게 다른지에 대한 검토가 필요하다. 본 연구에서는 세그먼트 이음부 강성계수를 이론식을 통해 결정한 후 일정한 범위를 선정하였다. 그 범위 내에서 강성계수를 변화해 가며 터널 단면 수치해석을 실시하여 세그먼트 라이닝 부재력을 도출하였고, 이에 강도설계법을 적용하여 세그먼트 라이닝 안정성 검토를 실시하였다. 그 결과 세그먼트 이음부 강성계수는 세그먼트 라이닝 설계에 큰 영향을 미치지 않는 것으로 나타났다.

키워드

이음부 강성계수

세그먼트 이음부

쉴드 TBM

세그먼트 라이닝

References

1.Groeneweg, T.W. (2007), “Shield driven tunnels in ultra high strength concrete”, Mater thesis, Delft University of Technology.

2.Janssen, P. (1983), “Tragverhalten von tunnelausbauten mit gelenktubbings”, Ph.D. Thesis, Technischen Universitat Carolo-Wilhelmina.

3.JSCE (2010), “Segment design(Revision)-To limit state design method from the allowable stress design method”, Maruzen.

4.Kim, S.H., Kim, W.K., Lee, H.Y. (2013), “Effect of segment thickness during shield TBM tunnelling in case study”, J. of Korean Tunnelling and Underground Space Association, Vol. 15, No. 3, pp. 311-320.

5.Lee, G.P., Bae, G.J., Moon, D.Y., Kang, T.S., Chang, S.H. (2013), “Evaluation of steel fiber reinforcement effect in segment lining by full scale bending test”, J. of Korean Tunnelling and Underground Space Association, Vol. 15, No. 3, pp. 215-223.

6.Moon, D.Y., Kang, T.S., Chang, S.H., Lee G.P., Bae, G.J. (2013), “Flexural performance evaluation of SFRC with design strength of 60 MPa”, J. of Korean Tunnelling and Underground Space Association, Vol. 15, No. 3, pp. 175-186.

7.Muir Wood, A.M. (1975), “The circular tunnel in elastic ground”, Geotechnique, Vol. 25, No. 1, pp. 115-127.

8.RTRI, (2000), “Civil structural design standards․commentary”, Sciencebook.

9.Teachavorasinskun, S., Chub-uppakarn T. (2010), “Influence of segmental joints on tunnel lining”, Tunnelling and Underground Space Technology, Vol. 25, No. 4, pp. 490-494.

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 : 16
No :1
Pages :63-74
Received Date : 2014-01-06
Revised Date : 2014-01-17
Accepted Date : 2014-01-23
DOI :https://doi.org/10.9711/KTAJ.2014.16.1.063

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

All Issue