Calculation of vertical method load-bearing capacity of single friction pile;

Optimization design and construction about manual well concrete piles breast wall of highroad bridge friction pile;

On building up the mathematic model of single-pile bearing capacity of friction piles and the application of the model;

According to the soillayer characteristics used for friction piles in Xi an area, the single pile model was built using FEM method corresponding to boundary conditions and assumptions.

The main purpose of this paper is to trace a wharf barn built on frictional pile foundation with pile length of 45m and SPT N value of the subsoil ranged from 15 to 25.

5 m thick soil filling can make negative skin friction most be developed,and the bearing capacity of frictional pile as well as end-bearing pile under negative sk.

Based on the assumed vertical displacement of the unit cell and the assumed distribution on the pile-soil interface of the pure friction pile,and using the boundary conditions that there was no relative slipping between pile and soil,the pile decrement was equal to that of soil on the pile-soil interface and that the vertical sheer stress of the unit cell s outer edge was equal to zero,the for.