Abstract
The effect of a smooth rigid stratum, located beneath a dense sand layer, on the bearing capacity and settlement of surface and shallow strip footings is investigated using an advanced experimental model. A theoretical analysis is presented for the bearing capacity of surface footings. The results indicate that the bearing capacity reaches a minimum value at a specific sand-layer thickness. Any increase in the layer thickness above this value causes an increase in the bearing capacity up to that corresponding to a continuous media.
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Abbreviations
- H=:
-
thickness of the sand layer
- B=:
-
foundation width
- N q and N γ=:
-
bearing capacity factors for a semi-infinite layer
- N qs and N γs=:
-
bearing capacity factors for a finite layer
- H o /B=:
-
limiting depth
- D r=:
-
relative density
- Φ=:
-
angle of soil internal friction
- M=:
-
model width
- D=:
-
depth of surcharge
- q=:
-
bearing stress, pressure applied on the footing
- q u=:
-
bearing capacity
- γ=:
-
unit weight of sand
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Andrawes, K.Z., Al-Omari, R.R. & Kirkpatrick, W.M. Bearing capacity of a strip foundation on a sand layer overlying a smooth rigid stratum. Geotech Geol Eng 14, 227–236 (1996). https://doi.org/10.1007/BF00452949
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DOI: https://doi.org/10.1007/BF00452949