Determine Load Capacity of Pressed Piles Using ζ Method

Load capacity of pile foundation is larger than shallow foundation because the loads are transferred deeper into de stiffer layers of soil. Piles and the ground under the pile cap work simultaneously to lift and hold the above structure. The determination of cross section, length and arrangement piles accordance with load, geotechnical, construction equipment, conditions is a big challenge in the designing of pile foundation to achieve efficiency economy. Analysing the relationship between the stress of the ground and pile's load capacity to choose cross section, length and arrangement piles accordance with load, geotechnical, construction equipment, conditions will bring economy efficiency. In this paper a new method for determining the load capacity of pile based on the consideration stress in the ground under the tip of the pile and along the pile is presented. The loading capacity of a pile predicted using the proposed method is compared with the result of the static compression test carried out at the field. The analysis based on this comparison showed that this method efficiently help the designer in determining correctly the load capacity of piles after having results of the pile static compression tests.