Pile shoe pouring process and the special reinforcing steel cage

This invention provides a pile casting method and its special-purpose reinforcing steel cage, the characteristic is that the reinforcing steel cage has an cement injection pipe and a return pipe mounted in parallel with the main reinforcing steel bar, and an isolating iron plate at the bottom of the reinforcing steel cage; when the concrete strength of the pile reaches C8 grade, cement paste is directly injected into the bottom of the pile through the injection pipe to form a pile with enlarged base; after solidification, it can greatly enhance the load capacity of the pile.