Research on Difficulties and Treatment Measures of Phc Pipe Pile Construction in a Blowing Sand Reclamation Plant

PHC pile construction speed is fast,easy to ensure quality,economic,so more and more construction foundation uses prestressed high strength concrete drilled caisson.But penetration of the PHC pile drives the hard formation difficultly,and the total number of hammer is too high to generate pile body fatigue failure,difficult to ensure the quality of pile and construction speed.And if a plant has rich groundwater and a high water table that is higher than that of pile top.in the process of pile sinking with end-open pile shoe,the soil and groundwater will enter inside pipe pile core,and increasing with increment of the depth of the pile.When soil or groundwater is too high in the PHC pile core,in pile-sinking process,water hammer effect is easy to making the pile bady blowout and to causing quality hidden trouble and endangering building security.This paper resolves the problem of such research and gets measures to prevent such issue through research on the actual PHC plie-sinking project in a Blowing sand reclamation plant.