Load Capacity of Concrete Pile in Cohesionless Soil
摘要
The pile foundation is now the primary choice for transferring the load of any small or large construction, as seen in recent advancements. Piles securely transfer the superstructure load to the ground underneath the structure itself. However, at times, the hard rock layers are not present where the structural load is to be transferred. In cases like this, the superstructure load is to be transferred to the soil even without a hard rock layer, where shaft resistance between the pile's outer surface and the surrounding soil aids in the load transmission along with the end resistance of the pile. In this work, 55 cm long and 8 cm diameter smooth concrete friction piles and rough concrete friction piles with varying free length ratios (FLRs) on sandy soil were employed experimentally. In the small-scale experimental laboratory investigation, FLRs of 2.67, 3.40, 4.50, and 6.33 were used. It has been observed that, in both smooth and rough concrete pile scenarios, piles with higher FLRs transmit more loads through the combination of end bearing and shaft resistance than other piles with lower FLRs. Additionally, compared to a smooth pile with the same FLR, a rough pile transmitted higher loads for the same amount of displacements of the piles. It was clear that when the embedment length into the soil medium increased and the pile's free length decreased, the load capacity of the piles increased in all the cases.