Root pressure grouting pile and construction method thereof

The present invention discloses a pile radical pressure, comprising a cylindrical pile, further comprising a bearing disposed in a cylindrical pile table top, with the cylindrical surface of the multi-key stud pile; pile or cylindrical surface provided with concentric raised supporting plate, the multi-disc to the support stud bond. Construction method comprising the steps of: the first excavation hole earthwork first pile, the pile after the first hole is formed, the extrusion hole bearing disk, respectively; horizontal bearing disk shot hole, the inner end of the root key left in the pile hole inside; pile hole along the side wall Wall construction template branched, and branched Wall pouring concrete; before repeating steps and, section by section down cycle of operation, until the depth of the pile hole reaches the set requirements; prefabricated reinforcement cage suspended pile place to support Wall hole pouring pile and pile. It can be seen, the present invention is constructed with the pile structure, increasing the force area of ​​the pile, the pile increases the bearing pressure, while less construction materials, easy construction, reduce construction costs.