| EPSRC Reference: |
GR/L75498/01 |
| Title: |
ANALYSING THE BEHAVIOUR OF FOOTINGS ON SAND USING AN ADVANCED CONSTITUTIVE SOIL MODEL |
| Principal Investigator: |
Woodward, Professor PK |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Sch of the Built Environment |
| Organisation: |
Heriot-Watt University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 July 1998 |
Ends: |
31 December 1999 |
Value (£): |
53,178
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| EPSRC Research Topic Classifications: |
| Ground Engineering |
Oil & Gas Extraction |
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| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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It is accepted that the capacity factor N(gamma) decreases with increasing width of foundation. This reduction is not proposed in the work of Terzaghi (14), Brinch-Hansen (15) or Vesic (17) as recommended in BS 8004 and Eurocode 7 (Part 1). Several reasons have been suggested for this phenomena, namely, (i) effect of higher foundation pressures reducing the friction angle, (ii) progressive failure producing a grain size effect across the shear band, (iii) preloading of the foundation & (iv) non-uniformities of density within the soil. Settlement predictions are based on allowable bearing pressures and are calculated using elasticity theory or experimental observations. This project will use a kinematic non-linear elastic plastic constitutive soil model to assess the effect of the foundation width on the predicted engineering behaviour of foundations on granular soils. The model has been previously calibrated to Nevada sand and has been shown to give accurate simulations of material behaviour under a variety of different stress paths. The project will perform finite element analyses to assess the effect of the initial density, pressure dependance of the friction angle and strain softening with increases in foundation width.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.hw.ac.uk |