Water table correction factors for settlements of shallow foundations in granular soils

Shahriar, Mohammad A., Sivakugan, Nagaratnam, Das, Braja M., Urquhart, Alex, and Tapiolas, Michael (2015) Water table correction factors for settlements of shallow foundations in granular soils. International Journal of Geomechanics, 15 (1). pp. 1-7.

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Abstract

Shallow foundations are designed to limit settlements within tolerable limits. Additional settlements produced by the rise of the water table due to rain or floods can jeopardize the integrity of the foundation. This paper proposes a rational method, based on strain influence factors, to predict the additional settlement produced by the rise of the water table on a footing resting on sands. The proposed method was validated using extensive laboratory test data, where model footings of five different shapes were loaded in sand placed at two relative densities, and the water level was raised from the bottom while the additional settlements were measured. The clean sands used in the tests were such that there were negligible capillary effects. Separate tests were carried out to demonstrate that the capillary effects were insignificant. The proposed method can be used as the basis for further studies that incorporate the effect of grain size distribution or the effects of water table fluctuations on additional settlement.

Item ID: 37158
Item Type: Article (Refereed Research - C1)
Keywords: water table, cohesionless soils, settlement, shallow foundations
ISSN: 1943-5622
Date Deposited: 17 Jun 2015 01:48
FoR Codes: 09 ENGINEERING > 0905 Civil Engineering > 090501 Civil Geotechnical Engineering @ 100%
SEO Codes: 87 CONSTRUCTION > 8702 Construction Design > 870201 Civil Construction Design @ 100%
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