Browse > Article
http://dx.doi.org/10.9711/KTAJ.2017.19.5.733

Experimental study on the ground arching depending on the deformation type of the crown in the shallow tunnel  

Yim, Il Jae (Gyeonggi Urban Innovation Corporation)
Lee, Sang Duk (Ajou University, Dept. of Civil and Transportation Eng.)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.19, no.5, 2017 , pp. 733-747 More about this Journal
Abstract
In the shallow tunnel, the surrounding ground could be loosened and deformed, which could be the cause of stress change in the ground. Terzaghi has clarified the development of a ground arching induced by the deformation of a tunnel crown in the trap door tests. However, he considered only the case in which that the tunnel crown deformed uniformly. He did not consider the effect of deformation shapes. Therefore, the relation between the shape of the ground relaxation above the tunnel crown and the deformation shape of the tunnel crown is not clear yet. In this study, model tests were performed for the three types of the tunnel crown, such as uniform, concave and convex shapes. As results, it was found that the vertical load would be transferred in various types depending on the deformation shapes of the tunnel crown.
Keywords
Tunnel face; Ultimate displacement; Shallow tunnel; Model test; Longitudinal load transfer;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
1 Atkinson, J.H., Mair, R.J. (1981), "Soil mechnics aspects of soft ground tunnelling", Ground Engineering, July, pp. 20-26.
2 Oh, D.W. (2017), "Analysis of pile load distribution and ground behaviour depending on vertical offset between pile tip and tunnel crown in sand through laboratory model test", Journal of Korean Tunnelling and Underground Space Association, pp. 358.
3 Kim, Y.W. (2017), "Experimental study on the longitudinal load transfer behavior in a shallow tunnel depending on the deformation type of tunnel face", pp. 34-36.
4 Kim, Y.W. (2016), "Experimental study on the longitudinal load transfer of a shallow tunnel depending on the deformation tunnel face(I)", Journal of Korean Tunnelling and Underground Space Association.
5 Kim, Y.W. (2016). "Experimental study on the longitudinal load transfer of a shallow tunnel depending on the deformation tunnel face(II)", Journal of Korean Tunnelling and Underground Space Association.
6 Lee, S.D. (2013), "Tunnel Mechanics", CIR publication, pp. 304-316.
7 Terzaghi, K. (1936), "Stress distribution in dry and in saturated sand above a yielding trap-door", Proceedings 1st International Conference on Soil Mechanics and Foundation Engineering, Cambridge, Vol. 1, pp. 307-311.
8 Terzaghi, K. (1943), "Theoretical Soil Mechanics" John Wiley and Sons. New York. p. 66-76.
9 Kim, T.G. (2017), "Micromechanical analysis of soil arching in trapdoor test using discrete element method", Proceedings of the 7th International Conference on Discrete Element Methods.
10 Kim, H.M. (2014), "A model test on soil arching and loosening zone developed in grounds composed of granular soil particles", Journal of Korean Tunnelling and Underground Space Association "Redistribution of stresses due to the soil arching generated in grounds composed of granular soil particless".
11 Han, Y.C., Kim, S.H., Jeong, S.S. (2014), "Ground behavior around tunnel using tunnel-shaped trapdoor model test", Journal of Korean Tunnelling and Underground Space Association.
12 Lee, S.D., Noh, Y.C., Yim, I.J. (2015), "The ground Full relaxation and displacements by phased excavation order", Journal of World Tunnel Congress.