Coupled systems mechanics

  • 제2권4호
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  • Pages.375-387
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  • 2013
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  • 2234-2184(pISSN)
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  • 2234-2192(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Use of infinite elements in simulating liquefaction phenomenon using coupled approach

  • Kumari, Sunita (Department of Civil Engineering, Indian Institute of Technology Roorkee) ;
  • Sawant, V.A. (Department of Civil Engineering, Indian Institute of Technology Roorkee)
  • 투고 : 2014.02.15
  • 심사 : 2014.03.10
  • 발행 : 2013.12.25
⟨ 이전 논문 다음 논문 ⟩

초록

Soils consist of an assemblage of particles with different sizes and shapes which form a skeleton whose voids are filled with water and air. Hence, soil behaviour must be analyzed by incorporating the effects of the transient flow of the pore-fluid through the voids, and therefore requires a two-phase continuum formulation for saturated porous media. The present paper presents briefly the Biot's basic theory of dynamics of saturated porous media with u-P formulation to determine the responses of pore fluid and soil skeleton during cyclic loading. Kelvin elements are attached to transmitting boundary. The Pastor-Zienkiewicz-Chan model has been used to describe the inelastic behavior of soils under isotropic cyclic loadings. Newmark-Beta method is employed to discretize the time domain. The response of fluid-saturated porous media which are subjected to time dependent loads has been simulated numerically to predict the liquefaction potential of a semi-infinite saturated sandy layer using finite-infinite elements. A settlement of 17.1 cm is observed at top surface. It is also noticed that liquefaction occurs at shallow depth. The mathematical advantage of the coupled finite element analysis is that the excess pore pressure and displacement can be evaluated simultaneously without using any empirical relationship.

키워드

참고문헌

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피인용 문헌

  1. On the Validation of a Numerical Model for the Analysis of Soil-Structure Interaction Problems vol.13, pp.8, 2016, https://doi.org/10.1590/1679-78252450
  2. Parametric study on flexible footing resting on partially saturated soil vol.3, pp.2, 2014, https://doi.org/10.12989/csm.2014.3.2.233
  3. Analyzing the Deformation of Multilayered Saturated Sandy Soils under Large Building Foundation vol.23, pp.9, 2013, https://doi.org/10.1007/s12205-019-0187-y