CONSTRUCTION METHOD AND CONSTRUCTION APPARATUS FOR STATIC-PRESSURE TUBE-SINKING PILE

摘要

A construction method and a construction apparatus for a static-pressure tube-sinking pile. The method comprises a positioning step and a tube sinking step. A tube sinking method comprises: starting a pressurizing static-pressure system and a tube sinking system of a pile construction apparatus, alternately pressurizing an outer tube (5) and an inner tube (6), and sinking the tube sinking system to a set depth. The pressurizing static-pressure system comprises a vertical frame (2) provided on a static-pressure pile machine chassis (1), a group of hydraulic holding pile grippers (3) provided on the chassis (1), and a group of hydraulic holding pile grippers (4) provided on the vertical frame (2). The tube sinking system comprises the steel outer tube (5) of a set rigidity and strength, the inner tube (6) of a set rigidity and strength, and an inner pipe hammer system.