An Experimental Study on Vertically Loaded Driven and CastIn-Situ Piles

Abstract

With the rapid growth of metropolitan areas and fast industrialization resulting from the fast-paced economic globalization, there has been a need to build heavier and taller structures on marginal sites, where surface soils are weak and shallow foundations are usually not the best design solution. In the present studybehaviors of the axially loaded driven and cast-in-situ piles were investigated. A several number of tests on different model piles like aluminium, wood and steel embedded in different density of sand i.e.,15.9kN/m 3 and 17.3kN/m 3 attained by sand raining technique were conducted. The model piles with outer diameter 15mm and length 300mm were used for single and group of piles which were subjected to axial compressive load. Smooth and rough piles were used and piles were made rough using standard epoxy and sand particles. The comparisons of ultimate load bearing capacity for different materials at different densities and at various modes of installation are described in the results. The experimental results showed that the axial compressive load varies for different material and ultimate load is more in driven piles as compared to the cast-in-situ piles. The pile capacity increases as the density of the sand increases.