Geomechanics and Engineering

  • 제1권3호
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  • Pages.179-191
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  • 2009
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Optimum PVD installation depth for two-way drainage deposit

  • Chai, J.C. (Department of Civil Engineering, Saga University) ;
  • Miura, N. (Institute of Soft Ground Engineering, Co., Ltd.) ;
  • Kirekawa, T. (Institute of Soft Ground Engineering, Co., Ltd.) ;
  • Hino, T. (Institute of Lowland Technology, Saga University)
  • 투고 : 2009.05.19
  • 심사 : 2009.06.29
  • 발행 : 2009.09.25
⟨ 이전 논문 다음 논문 ⟩

초록

For a two-way drainage deposit under a surcharge load, it is possible to leave a layer adjacent to the bottom drainage boundary without prefabricated vertical drain (PVD) improvement and achieve approximately the same degree of consolidation as a fully penetrated case. This depth is designated as an optimum PVD installation depth. Further, for a two-way drainage deposit under vacuum pressure, if the PVDs are fully penetrated through the deposit, the vacuum pressure will leak through the bottom drainage boundary. In this case, the PVDs have to be partially penetrated, and there is an optimum installation depth. The equations for calculating these optimum installation depths are presented, and the usefulness of the equations is studied by using finite element analysis as well as laboratory model test results.

키워드

참고문헌

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피인용 문헌

  1. Lateral displacement of soft ground under vacuum pressure and surcharge load vol.5, pp.2, 2011, https://doi.org/10.1007/s11709-011-0110-1
  2. Ground improvement by vacuum consolidation – a review vol.167, pp.4, 2014, https://doi.org/10.1680/grim.13.00012
  3. Degree of consolidation of clayey deposit with partially penetrating vertical drains vol.34, 2012, https://doi.org/10.1016/j.geotexmem.2012.02.008
  4. Numerical modelling of soft ground improvement by vacuum preloading considering the varying coefficient of permeability 2016, https://doi.org/10.1080/19386362.2016.1270793
  5. A case study on soil settlements induced by preloading and vertical drains vol.38, 2013, https://doi.org/10.1016/j.geotexmem.2013.05.002
  6. Stochastic cost optimization of ground improvement with prefabricated vertical drains and surcharge preloading vol.7, pp.5, 2014, https://doi.org/10.12989/gae.2014.7.5.525
  7. Use of discriminated nondimensionalization in the search of universal solutions for 2-D rectangular and cylindrical consolidation problems vol.10, pp.1, 2009, https://doi.org/10.1515/geo-2018-0016
  8. Use of discriminated nondimensionalization in the search of universal solutions for 2-D rectangular and cylindrical consolidation problems vol.10, pp.1, 2009, https://doi.org/10.1515/geo-2018-0016