Ultimate Bearing Capacity of Two Interfering Rough Strip Footings
Publication: International Journal of Geomechanics
Volume 7, Issue 1
Abstract
The ultimate bearing capacity of two interfering strip footings was determined by using the method of stress characteristics. The analysis was performed by choosing two different possible failure mechanisms. The variation of the efficiency factor was computed with respect to change in the clear spacing between the two footings. For a given , the value of predicted on the basis of Mechanism 1 was always found to be smaller than those on the basis of Mechanism 2. For Mechanism 1, the maximum value of , which becomes always equal to 2.0, always occurs at . On the other hand, the Mechanism 2 provides maximum value of even greater than 2.0, especially with , corresponding to . It was noted that the results from Mechanism 2 compare more closely with the theory of Stuart in 1962 and with the recent upper bound limit analysis solution of the writers.
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Published In
International Journal of Geomechanics
Volume 7 • Issue 1 • January 2007
Pages: 53 - 62
Copyright
© 2007 ASCE.
History
Received: Apr 4, 2005
Accepted: Dec 8, 2005
Published online: Jan 1, 2007
Published in print: Jan 2007
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