Geomechanics and Engineering

  • 제4권4호
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  • Pages.263-279
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  • 2012
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  • 2005-307X(pISSN)
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  • 2092-6219(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Influence of inclusion of geosynthetic layer on response of combined footings on stone column reinforced earth beds

  • Maheshwari, Priti (Department of Civil Engineering, Indian Institute of Technology Roorkee) ;
  • Khatri, Shubha (Formerly Research Scholar, Department of Civil Engineering, Indian Institute of Technology Roorkee)
  • 투고 : 2011.04.27
  • 심사 : 2012.10.05
  • 발행 : 2012.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

The present paper deals with the analysis of combined footings resting on geosynthetic reinforced granular fill overlying stone column improved poor soil. An attempt has been made to study the influence of inclusion of geosynthetic layer on the deflection of the footing. The footing has been idealized as a beam having finite flexural rigidity. Granular fill layer has been represented by Pasternak shear layer and stone columns and poor soil have been represented by nonlinear Winkler springs. Nonlinear behavior of granular fill layer, stone columns and the poor soil has been considered by means of hyperbolic stress strain relationships. Governing differential equations for the soil-foundation system have been derived and solution has been obtained employing finite difference scheme by means of iterative Gauss Elimination method. Results of a detailed parametric study have been presented, for a footing supporting typically five columns, in non-dimensional form in respect of deflection with and without geosynthetic inclusion. Geosynthetic layer has been found to significantly reduce the deflection of the footing which has been quantified by means of parametric study.

키워드

참고문헌

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피인용 문헌

  1. Design of boundary combined footings of trapezoidal form using a new model vol.56, pp.5, 2015, https://doi.org/10.12989/sem.2015.56.5.745
  2. A comparative study for design of boundary combined footings of trapezoidal and rectangular forms using new models vol.6, pp.4, 2017, https://doi.org/10.12989/csm.2017.6.4.417