The Analysis Of The Vertical Bearing Behavior Of Pretensioned Spun High Strength Concrete Piles Under Pressure

PHC Pile is a new sort of prefab piles. It is developed from the basic of traditional prefab square piles. It has a lot of virtue, such as steady and credible quality, high concrete strength, strong transfixion ability, high bearing capability, and fine accommodation to different geologic conditions or different construction measures. Now, this pile is applied abroad in harbor engineering. The performance of uncorked piles is more complex compare to normal piles. So many scholars and experts around the world devoted a lot of vigor in studying this pile. At the present time, there is no reasonable method to analyze the bearing capability of PHC piles. And we lack systemic analysis and comparison to many influencing factors.Based on the theory of former people, this thesis introduced principle of nonlinear finite elements, adopted ANSYS software, built reasonable model, and simulated the working mechanism of piles to analyze the distortion character. After setting logical contact surface between pile and soil, this thesis adopted 2-D and 3-D models to calculate real engineering. Then compare the result to actual data. It was proofed that these models were inosculate to fact. The bearing capacity of PHC piles is related to many influencing factors. How to ameliorate the relation of cost and practicality can deeply affect real engineering. This thesis analyze some influencing factors, such as shape of pile, soil on the end and side of pile, concrete strength of pile, and soil in the pile. It provided reference to application of this pile in harbor engineering.