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Bearing Capacity of Shallow Foundation on Geosynthetic Reinforced Sand  

Won Myoung-Soo (Research Institute of Technology, KSM Engrg. CO., LTD.)
Ling Hoe I. (Dept. of Civil Engrg., Columbia Univ.)
Kim You-Seong (Dept. of Civil Engrg., Chonbuk National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.20, no.7, 2004 , pp. 107-117 More about this Journal
Abstract
A series of model tests were conducted to investigate how the number of reinforcement layers, stiffnesses, types of reinforcement material and buried depth of a flexible pipe can affect bearing capacity-settlement curve at a loose sand foundation. In the test results, whereas the type of failure in unreinforced sand was local shear, the type of failure, for model tests with more than 2 reinforcement layers in loose sand, was general shear: The number of the optimum reinforcement layers was found to be two: Stiffness and type of reinforcement were more important than the maximum tensile strength of reinforcement in improving bearing capacity. When the depth of buried pipe from the sand surface was less than the width of the footing, test results showed that both bearing capacity and ultimate bearing capacity of buried pipe in unreinforced sand significantly decreased, and the type of failure in the reinforced sand changed from general shear to local shear.
Keywords
Bearing capacity; Flexible pipe; Geosynthetic; Reinforced sand; Shallow foundation;
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