Volume 10, Number 2 (June 2012)                   IJCE 2012, 10(2): 139-152 | Back to browse issues page


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Asakereh A, Moghaddas Tafreshi S, Ghazavi M. Strip footing behavior on reinforced sand with void subjected to repeated loading. IJCE. 2012; 10 (2) :139-152
URL: http://ijce.iust.ac.ir/article-1-525-en.html

Abstract:   (9232 Views)

This paper describes a series of laboratory model tests on strip footings supported on unreinforced and geogrid-reinforced sand
with an inside void. The footing is subjected to a combination of static and cyclic loading. The influence of various parameters
including the embedment depth of the void, the number of reinforcement layers, and the amplitude of cyclic load were studied.
The results show that the footing settlement due to repeated loading increased when the void existed in the failure zone of the
footing and decreased with increasing the void vertical distance from the footing bottom and with increasing the reinforcement
layers beneath the footing. For a specified amplitude of repeated load, the footing settlement is comparable for reinforced sand,
thicker soil layer over the void and much improved the settlement of unreinforced sand without void. In general, the results
indicate that, the reinforced soil-footing system with sufficient geogride-reinforcement and void embedment depth behaves much
stiffer and thus carries greater loading with lower settlement compared with unreinforced soil in the absent of void and can
eliminate the adverse effect of the void on the footing behavior. The final footing settlement under repeated cyclic loading becomes
about 4 times with respect to the footing settlement under static loading at the same magnitude of load applied.

Full-Text [PDF 504 kb]   (3378 Downloads)    
Type of Study: Research Paper | Subject: Soil Mechanics Classic

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