• Disha M.Patel

In many cases of construction, shallow foundations are built on top of existing cohesive soils, resulting in low bearing capacity and/or excessive settlement problems. An economical treatment method is the use of reinforced soil foundation (RSF). This can be done by either reinforcing cohesive soil directly or replacing the poor soils with stronger granular fill, in combination with reinforcement. In the present study, the bearing capacity of circular footing resting on multilayer geosynthetic-reinforced granular fill overlying soft soil is investigated by performing load settlement test. Series of tests are carried out to evaluate the effects of replacing soft soil with granular fill layer. To achieve soft soil condition in laboratory environment, unconfined compressive strength (UCS) tests were performed for various water content. Variable parameters include thickness of granular fill and number of geogrid layers into granular fill below circular footing. Thickness of granular fill (H) layer varied as 0.5B,0.75B and 1B, where B is width of footing. Soil is reinforced with horizontal layers of reinforcement ranging from one layer to three layers in the top layer of soil only. Circular footing of diameter10 cm and thickness of 1cm is used. The test results indicate that substantial improvement in terms of increase in bearing capacity ratio and reduction in the footing settlement due to provision of granular fill overlay on soft soil is observed. For unreinforced granular fill, maximum bearing capacity is observed in case of granular thickness of 0.75B. Also, as the number of geogrid layer increases bearing capacity increases and settlement decreases.

Bearing capacity, Circular footing, Multilayer soil, Load settlement test, Geogrid

"BEARING CAPACITY OF CIRCULAR FOOTING RESTING ON GEOGRID-REINFORCED GRANULAR FILL OVERLAY ON SOFT SOIL", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.302-307, April-2019, Available :http://www.jetir.org/papers/JETIR1904545.pdf

"BEARING CAPACITY OF CIRCULAR FOOTING RESTING ON GEOGRID-REINFORCED GRANULAR FILL OVERLAY ON SOFT SOIL", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp302-307, April-2019, Available at : http://www.jetir.org/papers/JETIR1904545.pdf