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ISSN : 2233-8292

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Vol.21 No.5
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종방향 부재의 강성효과를 고려한 쉴드 터널 분기부 보강 및 해석기법

Reinforcement of shield tunnel diverged section with longitudinal member stiffness effect

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2019, v.21 no.5, pp.675-687
https://doi.org/10.9711/KTAJ.2019.21.5.675
이규필 (한국건설기술연구원)
김도 (한양대학교)
이규필, & 김도. (2019). 종방향 부재의 강성효과를 고려한 쉴드 터널 분기부 보강 및 해석기법. (사)한국터널지하공간학회, 21(5), 675-687, https://doi.org/10.9711/KTAJ.2019.21.5.675
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Abstract

In recent years, the needs for double deck-tunnels have increased in large cities due to the increase in traffic volume and high land compensation costs. In Korea, a network type tunnel which is smaller than general road tunnels and crosses another tunnel underground is planned. In the shield tunnel joints between the existing shield tunnel and the box-type enlargement section, a partial steel-concrete joint is proposed where the bending moment is large instead of the existing full-section steel joint. In order to analysis the enlargement section of the shield tunnel diverged section to reflect the three-dimensional effect, the two-dimensional analysis model is considered to consider the column effect and the stiffness effect of the longitudinal member. A two-dimensional analysis method is proposed to reflect the stiffness of the longitudinal member and the column effect of the longitudinal point by considering the rigidity of the longitudinal member as the elastic spring point of the connecting part in the lateral model. As a result of the analysis of the model using the longitudinal member, it was considered that the structural safety of the partial steel-concrete joint can be secured by reducing the bending moment of the joint and the box member by introducing the longitudinal member having the stiffness equal to or greater than a certain value.

keywords
Tunnel diverged section, Tunnel enlargement, Deep tunnel, Partial steel-concrete joint, Beam-column effect, 터널 분기부, 터널 확폭, 대심도 터널, 부분 강재 접합, 보-기둥 효과

참고문헌

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2.

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3.

3. Japanese Standard Specification for Tunneling (2016), Shield Tunnels.

4.

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

5.

5. Kwon, H.J., Yang, K.H., Hong, S.H. (2017a), “Evaluation on cyclic flexural behavior of HSRC (hybrid H-steel-reinforced concrete) beams connected with steel columns”, Journal of the Korea Concrete Institute, Vol. 29, No. 3, pp. 291-298.

6.

6. Kwon, H.J., Yang, K.H., Hong, S.H. (2017b), “Evaluation of dowel bar on the one-way shear and shear friction behaviors of hybrid beams composed of steel and reinforced concrete elements”, Journal of the Korea Concrete Institute, Vol. 29, No. 1, pp. 93-100.

7.

7. Lee, D.S, Kim, T.K., Chae, G.B. (2015), “The experimental study of full-scale optimized composite beam (OCB) reinforced with open strands”, Journal of the Korea Concrete Institute, Vol. 27, No. 5, pp. 471-480.

8.

8. Seo, E.A., Yang, K.H., Hong, S.H. (2016), “Evaluation on flexural behavior of hybrid beams with rigid joint connecting steel and precast concrete elements”, Journal of the Korea Concrete Institute, Vol. 28, No. 1, pp. 13-21.

9.

9. You, K.H., Jin, S.H., Kim, Y.J. (2017), “A stability study of deep and double-deck tunnels considering shape and reinforcing method of an enlarged section by using numerical analyses”, Journal of Korean Tunnelling and Underground Space Association, Vol. 19, No. 1, pp. 41-55.

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