CONSTRUCTION METHOD FOR ROOT-TYPE FOUNDATION ANCHORAGE AND BORED, ROOT-TYPE CAST IN-SITU PILE WITH ANCHOR BOLTS

摘要

The invention discloses a construction method for rooted foundation anchorage, comprising the following steps:precasting a concrete caisson in sections, excavate or bore hole for the caisson sinking, reserving holes for projection of anchor roots in the wall of caisson;cleaning the bottom of the bore hole, and sealing the bottom with concrete; precasting the beam type concrete roots and, within the bore hole, projecting the roots into the earth around the caisson;sealing a concrete cover over the bore hole to form a flat cap, which can be used as the cap of a bridge foundation.;The invention also discloses a construction method for a root-type cast in-situ bored pile with anchor roots, comprising the following steps:placing a reinforcement cage in a bored hole; each guide framework is internally provided with anchor roots;using a vibration extruder to squeeze the roots in the reinforcement cage;using the squeezing head of the vibration extruder to squeeze the anchor roots from top to bottom gradually. The invention greatly improves the traditional foundation structure. The anchor roots increases friction and structural stability greatly, thus making it possible to reduce gravity of the structure.