Prestressed anti-floating anchor bolt and construction method thereof

Abstract

The invention relates to a prestressed anti-floating anchor bolt and a construction method thereof and belongs to the technical field of basic fixed buildings. The prestressed anti-floating anchor bolt comprises an anchor head, an anchor, a tension rod, a cylindrical connector, a steel strand with one end fixed in the anchor, and an adjusting nut. The construction method includes: 1, fixing one end of the steel strand into the anchor; 2, excavating earth to the bottom and constructing a cushion layer; 3, mounting the cylindrical connector and connecting the other end of the tension rod to the other end of the steel strand; 4, after concreting of the bottom plate cushion layer, applying prestress to the tension rod and the steel strand, and adjusting displacement generated by construction prestress, through the adjusting nut; 5, fixing the anchor head which is platy to one end of the tension rod, and tying with rebars; 6, casting a bottom plate, and casting the anchor head into a bottom plate foundation. The prestressed anti-floating anchor bolt and the construction method thereof have the advantages that on the premise of not affecting earth excavation and meeting the construction requirement of a permanent prestressed anchor cable, the anchor cable can be protected from damage and the bottom plate can be avoided leaking.

Description

technical field [0001] The invention relates to an anti-floating anchor rod and a construction method thereof, belonging to the technical field of foundation fixed buildings. Background technique [0002] There are many kinds of anchor cables on the market, among which there are roughly two types of anti-floating anchor cables: 1) steel strand prestressed anchor cables; 2) precision-rolled rebar anchor cables. Due to consideration of the permanent performance of the building structure, most of the prior art uses prestressed anchor cables. [0003] The applicant found two major problems in the construction of the anti-floating anchor: 1) When steel strands are used, after the construction of the steel strands is completed, the traditional method must reserve more than 1m of steel strands. The strands will be fixed in the base plate foundation during the final construction, however, the applicant finds that mechanical earthwork excavation is required after the construction of...

AI Technical Summary

Problems solved by technology

[0003] The applicant found two major problems in the construction of the anti-floating anchor: 1) When steel strands are used, after the construction of the steel strands is completed, the traditional method must reserve more than 1m of steel strands. The strands will be fixed in the base plate foundation during the final construction, however, the applicant finds that mechanical earthwork excavation is required after the construction of the steel strands, which may easily cause damage to the steel strands; 2) Steel strands The wires are prestressed through the bottom plate and anchored on the top of the bottom plate. Since the steel strands pass through the bottom plate, the bottom plate is prone to cracks and water seepage on the bottom surface

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