The research and Engineering applicant examples of sand-filled prestressed piping column with rib and enlarged bottom which is used in soft soil area are introduced.

The application of prestressed pipe pile in soft soil foundation works of special railway line project for passenger transportation along the coastal areas;

Study on the prestressed pipe pile-net composition foundation in prevention bumping of vehicle at bridge head;

The application of prestressed pipe piles in the improvement of soft foundation in highway engineering;

Application of prestressed concrete pipe pile in deep foundation pit;

Prevention of common quality defects of prestressed concrete pipe pile;

The construction technology and technological requirements of prestressed concrete pipe piles in expressway bridge are introduced.

Common problem in static-pressure pre-stressed pipe pile construction and its prevention measure;

The damage of pre-stressed pipe pile was treated by concrete core grouting of cast-in-place pile with casing underwater cement grouting technology and grouting reinforcement for fracture surface with post grouting in field cases,comparison was made on test results around the construction operation.

Pre-stressed pipe pile foundation is used in the gymnasium of certain primary school, in which some pile-heads of them are deviated during the course of constructing.