Geomechanics and Engineering

  • 제8권2호
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  • Pages.283-303
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  • 2015
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
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DOI QR코드

DOI QR Code

Differential settlements in foundations under embankment load: Theoretical model and experimental verification

  • Wang, Changdan (Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University) ;
  • Zhou, Shunhua (Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University) ;
  • Wang, Binglong (Key Laboratory of Road and Traffic Engineering of the Ministry of Education, Tongji University) ;
  • Guo, Peijun (Department of Civil Engineering, McMaster University) ;
  • Su, Hui (Department of Civil Engineering, McMaster University)
  • 투고 : 2014.05.15
  • 심사 : 2014.11.17
  • 발행 : 2015.02.25
⟨ 이전 논문 다음 논문 ⟩

초록

To research and analyze the differential settlements of foundations specifically, site investigations of existing railways and metro were firstly carried out. Then, the centrifugal test was used to observe differential settlements in different position between foundations on the basis of investigation. The theoretical model was established according to the stress diffusion method and Fourier method to establish an analytical solution of embankment differential settlement between different foundations. Finally, theoretical values and experimental values were analyzed comparatively. The research results show that both in horizontal and vertical directions, evident differential settlement exists in a limited area on both sides of the vertical interface between different foundations. The foundation with larger elastic modulus can transfer more additional stress and cause relatively less settlement. Differential settlement value decreases as the distance to vertical interface decreases. In the vertical direction of foundation, mass differential settlement also exists on both sides of the vertical interface and foundation with larger elastic modulus can transfer more additional stress. With the increase of relative modulus of different foundations, foundation with lower elastic modulus has larger settlement. Meanwhile, differential settlement is more obvious. The main error sources in theoretical and experimental values include: (a) different load form; (b) foundation characteristics differences; (c) modulus conversion; (d) effect of soil internal friction.

키워드

참고문헌

  1. Abusharar, S.W., Zheng, J.J., Chen, B.G. and Yin, J.H. (2009), "A simplified method for analysis of a piled embankment reinforced with geosynthetics", Geotext. Geomembr., 27(1), 39-52. https://doi.org/10.1016/j.geotexmem.2008.05.002
  2. Akira, S., Lawalenna, S. and Norihiko, M. (2003), "Partially-drained cyclic behavior and its application to the settlement of a low embankment road on silty-clay", Soil. Found., 43(1), 33-46. https://doi.org/10.3208/sandf.43.33
  3. Anderson, J., Townsend, F. and Rahelison, L. (2007), "Load testing and settlement prediction of shallow foundation", J. Geotech. Geoenviron., 133(12), 1494-1502. https://doi.org/10.1061/(ASCE)1090-0241(2007)133:12(1494)
  4. Bergado, D.T. and Teerawattanasuk, C. (2008), "2D and 3D numerical simulations of reinforced embankments on soft ground", Geotext. Geomembr., 26(1), 39-55. https://doi.org/10.1016/j.geotexmem.2007.03.003
  5. Braja, M.D. (2008), Advanced Soil Mechanic, (3rd Edition), Taylor & Francis, New York, NY, USA.
  6. Chen, Y.M., Cao, W.P., and Chen, R.P. (2008), "An experimental investigation of soil arching within basal reinforced and unreinforced piled embankments", Geotext. Geomembranes., 26(2),164-174. https://doi.org/10.1016/j.geotexmem.2007.05.004
  7. Fenton, G. and Griffiths, D. (2002), "Probabilistic foundation settlement on spatially random soil", J Geotech. Geoenviron., 128(5), 381-390. https://doi.org/10.1061/(ASCE)1090-0241(2002)128:5(381)
  8. Han, J. and Gabr, M. (2002), "Numerical analysis of geosynthetic-reinforced and pile-supported earth platforms over soft soil", J. Geotech. Geoenviron., 128(1), 44-53. https://doi.org/10.1061/(ASCE)1090-0241(2002)128:1(44)
  9. Liu, H.L., Charles, W.W. and Fei, K. (2007) "Performance of a geogrid-reinforced and pile-supported highway embankment over soft clay: Case study", J. Geotech. Geoenviron., 133(12), 1483-1493. https://doi.org/10.1061/(ASCE)1090-0241(2007)133:12(1483)
  10. Matyas, E.L. and Rothenburg, L. (1996), "Estimation of total settlement of embankments by field measurements", Can. Geotech. J., 33(5), 834-841. https://doi.org/10.1139/t96-110-330
  11. Ministry of Railways of People's Republic of China (2009), Code For Design Of High Speed Railway (TB10621-2009), Beijing, China.
  12. Mutsumi, T., Toshihiro, N., Motohiro, I., Masaki, N. and Akira, A. (2011), "Prediction of settlement in natural deposited clay ground with risk of large residual settlement due to embankment loading", Soil. Found., 51(1), 133-149. https://doi.org/10.3208/sandf.51.133
  13. Mylonakis, G. and Gazetas, G. (1998), "Settlement and additional internal forces of grouped piles in layered soil", Geotechnique, 48(1), 55-72. https://doi.org/10.1680/geot.1998.48.1.55
  14. Nakanishi, K. and Takewaki, L. (2013), "Optimum pile arrangement in piled raft foundation by using simplified settlement analysis and adaptive step-length algorithm", Geomech. Eng., Int. J., 5(6), 519-540. https://doi.org/10.12989/gae.2013.5.6.519
  15. Puzrin, A.M., Alonso, E.E. and Pinyo, N.M. (2010), Geomechanics of Failures, Springer, Heidelberg, Germany.
  16. Rowe, R.K. and Li, L.A. (2002), "Behaviour of reinforced embankments on soft rate-sensitive soils", Geotechnique, 52(1), 29-40. https://doi.org/10.1680/geot.2002.52.1.29
  17. Shaer, A.A., Duhamel, D., Sab, K., Foret, G. and Schmitt, L. (2008), "Experimental settlement and dynamic behavior of a portion of ballasted railway track under high speed trains", J. Sound. Vib., 316(1-5), 211-233. https://doi.org/10.1016/j.jsv.2008.02.055
  18. Shin, E.C., Kim, D.H. and Das, B.M. (2002), "Geogrid-reinforced railroad bed settlement due to cyclic load", Geotech. Geol. Eng., 20(3), 261-271. https://doi.org/10.1023/A:1016040414725
  19. Shideh, D., Jonathan, D.B., Juan, M.P., Michael, R. and Dan, W. (2010), "Mechanisms of seismically induced settlement of buildings with shallow foundations on liquefiable soil", J. Geotech. Geoenviron., 136(1), 151-164. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000179
  20. Taylor, R.N. (1994), Geotechnical Centrifuge Technology, CRC Press, Boca Raton, FL, USA.
  21. Toshihiro, N., Akira, A., Masaki, N., Eiji, Y. and Mutsumi, T. (2005), "Progressive consolidation settlement of naturally deposited clayey soil under embankment loading", Soils. Found., 45(5), 39-51.
  22. Wang, B.L. (2007), Embankment Engineering in High-Speed Railways, China Railway Press, Beijing, China.
  23. Wang, C.D., Wang, B.L., Guo, P.J. and Zhou, S.H. (2013), "Experimental analysis on settlement controlling of geogrid-reinforced pile-raft-supported embankments in high-speed railway", Acta. Geotech., DOI:10.1007/s11440-013-0288-6
  24. Wang, C.D., Zhou, S.H., Guo, P.J. and Wang, B.L. (2014), "Experimental analysis on settlement controlling of geogrid-reinforced pile-supported embankments on collapsible loess in high-speed railway", Int. J. Pavement. Eng., 15(9), 867-878. https://doi.org/10.1080/10298436.2014.943130
  25. Wang, Z.L., Li, Y.C. and Shen, R.F. (2007), "Correction of soil parameters in calculation of embankment settlement using a BP network back-analysis model", Eng. Geol., 91(2-4), 168-177. https://doi.org/10.1016/j.enggeo.2007.01.007
  26. Wu, W. and Yu, H.S. (2006), Modern Trends in Geomechanics, Springer, Heidelberg, Germany.

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  6. Evolution of Soil Settlements under a Rockfill Dam Based on Potential Earthquake Harmfulness (PEH) 'Case of Boumerdes Earthquake, Algeria 2003' vol.42, pp.None, 2015, https://doi.org/10.4028/www.scientific.net/jera.42.109