• NAMRTA DHIMAN
• PRASHANT GARG

ABSTRACT: Ring footings are usually used for symmetrical buildings like silos, chimney, and oil storage. One of the most important problems are to construct these footings on marine deposits of very soft clay which extends in Egypt in the northern of the delta and the north of the Suez gulf. Replacing the soft clay soil with granular mixture is the most famous and cheapest techniques to increase the bearing capacity of these soils. The aim of this research is to introduce a technique using sand trench to reinforce the soft clay below the ring foundation. Laboratory investigation has been performed to study this combination. The effect of different factors such as the width, the thickness of sand trench, and the presence of stone piles below it have been examined. Dimensions of sand trench appeared to be an important factor in improving ring footing behavior on soft clays. Bearing capacity of ring footings on sand has been studied by laboratory model tests but in this study the numerical analysis is done. The analysis is done using PLAXIS 2D software. The effects of the depth, internal friction of sand and the ratio of the inner to the outer diameter of the ring footing have been studied.

Keywords: Bearing Capacity, Ring Footing, Sand trench, Stone Piles, Soil Improvement.

"BEARING CAPACITY ANALYSIS OF RING FOOTING ON CLAY WITH SAND TRENCH.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.114-116, June 2019, Available :http://www.jetir.org/papers/JETIR1906Q15.pdf

"BEARING CAPACITY ANALYSIS OF RING FOOTING ON CLAY WITH SAND TRENCH.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp114-116, June 2019, Available at : http://www.jetir.org/papers/JETIR1906Q15.pdf