Seismic Performance And Durability Analysis Of The Prestressed Concrete Piles

The Prestressed Concrete Pipe Pile is a common type of pile foundations. As a kind ofdeep foundations, it is widely used in various construction projects, such as industrialconstruction, civil buildings, roads, bridges and so on. Prestressed Concrete Pipe Pile has theadvantages of simple process, high-quality performance, short production cycle, low cost,convenient detection and large-scale industrial production possibilities. But different fromordinary solid pile, the Prestressed Concrete Pipe Pile has a hollow structure, which makes itsmechanical properties different from ordinary solid pile, especially in seismic performance.The paper, by using finite element analysis software “ANSYS”, carried out a “pile-soil”dynamic analysis in view of the Prestressed Concrete Pipe Piles under the seismic load. Thepaper carried out the following content：1．Summarizing the research status quo of the Prestressed Concrete Pipe Piles and itsseismic performance. Starting from the system of pile–soil constitutive model and themechanism of interaction between the soil–pile, explores the essence and the analysismethod of pile–soil dynamic effect.2．Further analyze mechanism of dynamic effect of pile and soil; single piece of PHCpipe pile was established based on ANSYS finite element model of single pile–soil system;analyzing the response of a single Prestressed Concrete Pipe Pile under earthquake; By usingNinghe–Tianjin wave, analyzing and comparing the system of pile–soil constitutive modelin three different constraints: linear elastic state, the nonlinear state and semi-nonlinear state,so as to obtain more accurate seismic response and the stress distribution of the Prestressed concrete pipe pile.3．Building pile foundations of the Prestressed Concrete Pipe Pile, three types of seismicwaves are used respectively to exert influence on the foundations of the Prestressed ConcretePipe Pile and analyze the responses of pile groups that under different seismic waves,different seismic wave acceleration, different seismic wave loading direction and differentseismic wave frequency.4．Considering the erosion of chloride ion and a variety of durable factors to analyze thedurability of Prestressed Concrete Pipe Pile.Research results can provide basic theory support and numerical verification for thetreatment and design of the Prestressed Concrete Pipe Pile, which have certain guidingsignificance in practical engineering.