Behavior of Single Pile Subjected to Eccentric Loading in Cohesionless Soils

Abstract

Pile foundation of engineering structures, such as bridges, offshore structures, and retaining walls, is frequently subjected to eccentric loads. Many deep foundation structures experience excessive settlement if subjected to eccentric loads. Several researchers have analyzed the problem and studied the behavior of deep foundation structures analytically. The main aim of this project report deals with the bearing capacity of single pile under vertical eccentric load in cohesion less soils. The purpose of the thesis is to study the load–displacement response of single pile [8] installed in soil bed when subjected to vertical eccentric loading for 60% and 70% relative densities [1, 2]. Single pile was fabricated with diameter 42 mm, 49 mm, 75 mm, and 100 mm for constant length of 500 mm. Tests were conducted using manual loading with four number of dial gauges. Most of the studies relate to the case of a vertical load applied centrally to the foundation. Simplified calculation approach for settlement of single pile is studied [6].However, when loads are applied axially and eccentrically to the foundation, the bearing capacity is different from centrally loaded pile model. Ultimate bearing capacity has been found out for central as well as eccentric loading conditions. This paper aims to investigate the response of the pile subjected to eccentric load and comparative results of the effect of diameter, the effect of relative densities, and the effect of eccentricity.