ABSTRACT
This study focuses on the influence of the pile installation method on vertical and horizontal pile resistance. In a series of laboratory experiments, a model pile was installed using four types of pile installation methods: monotonic push-in, surging (repetitive push-in and pull-out), vibratory pile driving, and bored pile installation in dense dry sand ground. It was found that the cyclic shearing of surging or vibratory pile driving prevented soil dilation and decreased pile penetration resistance. During a static load test in the vertical direction, the pile installed using push-in, surging, or vibratory pile driving exhibited a higher vertical resistance in comparison with the bored pile installed in a similar manner. In the horizontal load tests, relatively high horizontal resistances were obtained in the surging and push-in cases in comparison with the bored pile, indicating that the effect of the displacement pile increases the horizontal soil resistance.
