Construction method for root-type foundation anchorage and bored, root-type cast in-situ pile with anchor bolts
a construction method and root-type technology, applied in the direction of caissons, constructions, building materials handling, etc., can solve the problems of high construction cost, cast-in-place piles have disadvantages, and increase the consumption of reinforcing steel bars and cement, so as to achieve simple construction technology, less material consumption, and high construction efficiency
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[0038]Just as shown in FIG. 1 and FIG. 3, the invention discloses a construction method for rooted foundation anchorage, comprising the following steps:
[0039]Precasting a bore hole 1 in sections, reserving in the wall of the bore hole holes 3 for the projection of anchor roots 2, and sinking the caisson into the earth 4 by its self-weight, which stops sinking when the bottom runs into rocks; the anchor root has a cusp at one end, and a flat head at the other end;
[0040]Cleaning the bottom of the bore hole, and sealing the bottom with concrete;
[0041]Precasting the beam type concrete roots and, within the bore hole, projecting the roots into the earth around the caisson 4;
[0042]And sealing a concrete cover over the bore hole to form a flat cap, which can be used as the cap of a bridge foundation.
[0043]The precast beam type concrete roots are, within the bore hole, projected in to the earth, comprising the following steps:
[0044]The inwall of the caisson is internally provided with a ver...
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- 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.
- 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.
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