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Paper Information

Journal:   AMIRKABIR   FALL 2006- WINTER 2007 , Volume 17 , Number 65-C; Page(s) 23 To 30.
 
Paper: 

EXPERIMENTAL STUDY ON EFFECT OF VOID ON BEARING CAPACITY OF SHALLOW FOUNDATION ABOVE SAND

 
 
Author(s):  MOGHADAS TAFRESHI S.N., HEYDARI ALI KAMAR B.
 
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Abstract: 

Underground voids can be created by different reasons such as tunneling, mining, water and gas networks and old conduits. The existence of above factors can affect the bearing capacity of shallow foundations. To study the behavior of strip foundation located above a continuous void in sand, a new physical model was developed in K.N.Toosi University of Technology. The experiments were performed in a test tank, which accommodates the soil with desired density, model void and footing. A series of different tests were carried out to study the effect of relative density of soil, embedded depth of void and eccentricity of footing against the void. The results of the tests indicate that, there is a critical region under the footing. Only when the void is located within this region, the stability and bearing capacity of  the footing will be significantly affect by presence of the void and the magnitude of this effect must be consider.

 
Keyword(s): PHYSICAL MODEL, UNDERGROUND VOID, BEARING CAPACITY, SETTLEMENT, SHALLOW FOUNDATION
 
References: 
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