Combined with practical engineering,the author proposes construction technical measures of mechanical punched cast-in-situ pile from position determination,pile-casting making and setting,punch installation,clay pore-forming and limestone pore-forming,and illustrates quality control of punched cast-in-situ pile,which to offer a reference for similar engineering construction.

Fabrication and construction technology of steel casing of bored pile;

On the basis of the experiences from pile foundation construction of the approach spans of Linhuaiguan Huaihe River Bridge on Bengbu-Mingguang Expressway, this paper presents the problems occurring in the bored pile foundation construction after flood damage, such as bored pile hole collapse, steel casing sinking and concrete duct blockage, and the methods adopted for handling these problems.

During construction of the piles, the construction technology of driven\|in steel casings was used, that is, to firstly sink the casings by hammering and then set the working platforms on top of the casings.

The design and application of mechanical cast-in place pile construction aiquille and pile casting