Stress Distribution below Strip Footing Using Finite Element Analysis

Authors

  • Priyanka Bhartiya
  • Shivangi Vashisth
  • Gaurav Singh Department of Civil Engineering, Jagadguru Sri Shivarathreeshwara Academy of Technical Education, Noida, Uttar Pradesh, India

DOI:

https://doi.org/10.3759/joge.v3i3.3693

Keywords:

Finite element method (FEM), ABAQUS, Boussinesq’s equation, pore pressure, stress distribution

Abstract

The estimation of stress distribution below ground is important in all types of geotechnical analysis. That is why the correctly measured value of stress distribution below ground level under various conditions will be helpful for resilient design in geotechnical point of view. This paper presents an analysis of vertical stress distribution below a strip footing due to varying applied loads using finite element method (FEM) modeling in ABAQUS and the results are compared with Boussinesq’s solution. In FEM, elastic analysis is done with and without the presence of pore pressure to check the effect of pore pressure on stress distribution below ground level. A two-dimensional analysis of strip footing was carried out with an aim to develop a condition where the effect of pore pressure can be considered and its effect can be analyzed while studying the stress distribution across the depth of soil. The variation of stress, strain, displacement, pore pressure with various loading condition along vertical as well as horizontal planes were studied graphically using both Boussinesq’s solution and FEM analysis result. It was observed that stress distribution below ground is different in the presence of pore water than in dry condition which is not at all following the Boussinesq’s solution.

References

Boussinesq J. Applications des Potentials a l’Etude de l’Equilibre et Mouvement desSolides Elastiques. Paris: Gauthier-Villard; 1885.

Deb D. Finite element method: concepts and applications in geomechanics. Mumbai: Prentice-Hall of India Pvt. Ltd.; 2006

Vertical stresses below applied load. In: Ranjan G, Rao AS. Basic and Applied Soil Mechanics. New Delhi, India: New Age International Pvt. Ltd.; 2007.

Bowles JE. Foundation Analysis and Design, 5th Ed. New York: McGraw Hill; 1996.

Algin HM. Stresses from linearly distributed pressures over rectangular areas. Int J Num Anal Meth Geomech. 2000; 24: 681–92p.

Vitone DM, Valsangkar AJ. Stresses from Loads over Rectangular Areas. JGED, ASCE. 1986; 112(10): 961–4p.

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Published

2016-12-22

Issue

Vol. 3 No. 3 (2016)

Section

Research Article

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