바로가기메뉴

본문 바로가기 주메뉴 바로가기

(사)한국터널지하공간학회

ISSN : 2233-8292

Article Contents

Next
e-Submission

Vol.19 No.3
Citation Share

Analysis of pile load distribution and ground behaviour depending on vertical offset between pile tip and tunnel crown in sand through laboratory model test

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2017, v.19 no.3, pp.355-373
https://doi.org/10.9711/KTAJ.2017.19.3.355


& (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. (사)한국터널지하공간학회, 19(3), 355-373, https://doi.org/10.9711/KTAJ.2017.19.3.355
  • Downloaded
  • Viewed
PDF Download

Abstract

Tunnelling in urban areas, it is essential to understand existing structure-tunnel interactive behavior. Serviced structures in the city are supported by pile foundation, since they are certainly effected due to tunnelling. In this research, thus, pile load distribution and ground behavior due to tunnelling below grouped pile were investigated using laboratory model test. Grouped pile foundations were considered as 2, 3 row pile and offsets (between pile tip and tunnel crown: 0.5D, 1.0D and 1.5D for generalization to tunnel diameter, D means tunnel diameter). Soil in the tank for laboratory model test was formed by loose sand (relative density: Dr = 30%) and strain gauges were attached to the pile inner shaft to estimate distribution of axial force. Also, settlements of grouped pile and adjacent ground surface depending on the offsets were measured by LVDT and Dial gauge, respectively. Tunnelling-induced deformation of underground was measured by close range photogrammetric technique. Numerical analysis was conducted to analyze and compare with results from laboratory model test and close range photogrammetry. For expression of tunnel excavation, the concept of volume loss was applied in this study, it was 1.5%. As a result from this study, far offset, the smaller reduction of pile axial load and was appeared trend of settlement was similar among them. Particulary, ratio of pile load and settlement reduction were larger when the offset is from 0.5D to 1.0D than from 1.0D to 1.5D.

keywords
근거리사진계측, 군말뚝, 구조물-터널-지반 상호거동, 수치해석, 수직이격거리, Close range photogrammetry, Group piles, Structure-tunnel-soil interaction, Numerical analysis, Vertical offset

Reference

1.

1. Atkinson, J.H., Mair, R.J. (1981), “Soil mechnics aspects of soft ground tunnelling” Ground Engineering, July, pp. 20-26.

2.

2. Chen, L.T., Poulos, H.G., Loganathan, N. (1999), “Pile responses caused by tunnelling”, Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 125, No. 3, pp. 207-215.

3.

3. Cheng, C.Y., Dasari, G.R., Chow, Y.K., Leung, C.F. (2007), “Finite element analysis of tunnel-soil-pile interaction using displacement controlled model”, Tunnelling and Underground Space Technology, Vol. 22, No. 4, pp. 450-466.

4.

4. Choi, G.N., Woo, S.J., Yoo, C.S. (2011), “Effect of tunneling under a bridge on pile foundation behavior mechanism”, Journal of Korean Tunnelling and Underground Space Association, Vol. 13, No. 1, pp. 51-69. (in Korean)

5.

5. Devriendt, M., Williamson, M. (2011), “Validation of methods for assessing tunnelling-induced settlements on piles”, Ground Engineering, March, pp. 25-30.

6.

6. Hartono, E., Leung, C.F., Shen, R.F., Chow, Y.K., Ng, Y.S., Tan, H.T., Hua, C.J. (2014), “Behaviour of pile above tunnel in clay”, Physical Modelling in Geotechnics, pp. 833-838.

7.

7. Jacobsz, S.W. (2002), “The effects of tunnelling on piled foundations”, PhD thesis, University of Cambridge.

8.

8. Jeon, Y.J., Kim, S.H., Lee, C.J. (2015), “A study on the effect of tunnelling to adjacent single piles and pile groups considering the transverse distance of pile tips from the tunnel”, Journal of Korean Tunnelling Underground Space Association, Vol. 17, No. 6, pp. 637-652. (in Korean)

9.

9. Kaalberg, F.J., Teunissen, E.A.H., van Tol A.F., Bosch, J.W. (2005), “Dutch Research on the impact of shield tunneling on pile foundations”, Geotechnical Aspects of Underground Construction in Soft Ground, Proceedings of 5th International Conference of TC 28 of the ISSMGE, pp. 123-133.

10.

10. Kim, Y.J., Im, C.G., Kang, S.G., Lee, Y.J. (2014), “A study on surface settlement characteristics according to the cohesive soil depth through laboratory model tests”, Journal of Korean Tunnelling Underground Space Association, Vol. 16, No. 6, pp. 507-520. (in Korean)

11.

11. Kim, Y.S., Ko, H.W., Kim, J.H., Lee, J.G. (2012), “Dynamic Deformation Characteristics of Joomunjin Standard Sand Using Cyclic Triaxial Test”, Journal of the Korean Geotechnical Society, Vol. 28, No, 12, pp. 53-64. (in Korean)

12.

12. Kitiyodom, P., Matsumoto, T., Kawaguchi, K. (2005), “A simplified analysis method for piled raft foundation subjected to ground movements induced by tunnelling”, International Journal of Numerical Analysis Methods in Geomechanics, Vol. 29, No. 15, pp. 1485-1507.

13.

13. Kong, S.M., Oh, D.W., Ahn, H.Y., Lee, H.G., Lee, Y.J. (2016), “Investigation of ground behavior between plane-strain grouped pile and 2-arch tunnel station excavation”, Journal of Korean Tunnelling Underground Space Association, Vol. 18, No. 6, pp. 535-544. (in Korean)

14.

14. Lee, C.J. (2012), “Numerical analysis of the interface shear transfer mechanism of a single pile to tunnelling in weathered residual soil”, Computers and Ceotechnics, Vol. 42, May??, pp. 193-203.

15.

15. Lee, C.J., Chiang, K.H. (2007), “Response of single piles to tunneling-induced soil movements in sandy ground”, Canadian Geotechnical Journal, Vol. 44, No. 10, pp. 1224-1241.

16.

16. Lee, C.J., Jacobsz, S.W. (2006), “The Influence of Tunnelling on Adjacent Piled Foundations”, Tunnelling and Underground on Space Technology, Vol. 21, No. 3, pp. 430-??.

17.

17. Lee, S.W., Choy, C.K.M., Cheang, W.W.L., Brinkgreve, R. (2010), “Modelling of tunnelling beneath a building supported by friction bored piles”, The 17th Southeast Asian Geotechnical Conference, PP. 215-218.

18.

18. Lee, Y.J. (2004), “Tunnelling adjacent to a row of loaded piles”, PhD thesis, University College London, University of London.

19.

19. Loganathan, N., Poulos, H.G. (1998), “The Mechanics of Soils and Foundation”, Taylor & Francis Group, pp. 397-407.

20.

20. Loganathan, N., Poulos, H.G., Stewart, D.P. (2000), “Centrifuge model testing of tunneling-induced ground and pile deformations”, Geotechnique, Vol. 50, No. 3, pp. 283-294.

21.

21. Oh, D.W., Lee, Y.J. (2017), “Pile Load Transition and Ground Behaviour due to Development of Tunnel Volume Loss under Grouped pile in Sand”, Journal of the Korean Society of Civil Engineers, Vol. 37, No. 2, pp. 485-495. (in Korean)

22.

22. Pang, C.H. (2006), “The effects of tunnel construction on nearby pile foundation”, PhD thesis, The National University of Singapore.

23.

23. Plaxis ver AE. (2014), “Plaxis reference maual”, Plaxis bv, pp. 1-307.

24.

24. Selemetas, D. (2005), “The response of full-scale piles and piled structure to tunnelling”, PhD thesis, University of Cambridge.

25.

25. Shin, J.H. (2015), “Geomechanics and Engineering (II)”, CIR, pp. 361. (in Korean)

26.

26. Yoo, C.S., Song, A.R. (2006), “Effects of Tunnel Construction on an Exisiting Tunnel Lining”, Tunnelling Technology, Vol. 8, No. 4, pp. 307-324. (in Korean)

(사)한국터널지하공간학회

e-Submission OA Policy