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Theoretical and Experimental Analysis Of Bearing Capacity For Shallow Footings On Laterally Confinement soft soil

1st international conference of civil engineering science • 2003
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Publication Information
Authors Alnos A. E. Hegazy
Keywords Bearing capacity, Soft soil, Shallow footings, Lateral confinement, and Underpinning settlement.
Journal 1st international conference of civil engineering science
Publisher Assuit University
Volume Vol. 1
Issue October
Pages 102-112
publication.type International
Paper Link Not Available
Supplementary Materials Not Available
Abstract
For tall building and heavy loaded structures founded in poor subsoil conditions, underpinning foundations are extensively required. The use of underpinning foundation for small building and light structures is very expensive and costly. A low cost technique of underpinning foundation can be used for shallow footings of light structures resting on thick layers of soft soil. This technique is based on the lateral confinement of soft soil to a certain depth below footing level to decrease the footing settlement and increase the bearing capacity. In the present paper, experimental bearing tests were carried out to study the effect of laterally confinement of soft clay underneath sallow footings on bearing capacity and footing displacement. Also, a theoretical analysis for the proposed technique was presented. It is evident that, the lateral confinement of soft clay increases the bearing capacity of shallow footings and decreases the footing settlement. The obtained results from bearing capacity of shallow footings and decreases the footing settlement. The obtained results from bearing tests are presented, discussed and compared with those calculated from theoretical solutions.