A method for mechanically anchoring steel bars

Abstract

A rebar mechanical anchoring method relates to rebar mechanical anchoring and belongs to the field of constructional engineering. The rebar mechanical anchoring method avoids over-length rebar anchoring length and particularly avoids over-length anchoring length of high-strength longitudinal stress rebar. The rebar mechanical anchoring method solves the problem that welding speed is slow and welding quality is difficult to guarantee due to the fact that a welding mode is used for welding the rebar and an anchoring plate, solves the problem that hook anchoring of the tail end of the rebar has influences on pouring of concrete and an anchoring is crowded, and solves the problem of damage to partial concrete easily occurred in tail end anchoring. A steel sleeve is sleeved outside the rebar, an extrusion device is used for conducting radial extrusion on the steel sleeve to enable the steel sleeve to have plastic deformation to be meshed with a rebar transverse rib to form a whole to form anchoring, multi-point anchoring is formed by setting a plurality of steel sleeves in a rebar anchoring length scope to increase anchoring force, and compared with a method of forming anchoring at the tail end, the anchoring length of the rebar is about 40% of basic anchoring length equivalently. The rebar mechanical anchoring method has wide application prospect on the constructional engineering.

Description

technical field [0001] The invention relates to a mechanical anchoring method for steel bars, belonging to the field of construction engineering. Background technique [0002] Reinforcement anchorage is the most basic problem to be solved in reinforced concrete components, and each rebar requires reliable anchorage to exert its strength. The current national standard "Code for Design of Concrete Structures" GB50010 has the following methods for reinforcing steel anchors: [0003] Method 1: Anchoring with 90-degree hooks at the end of the steel bar, Method 2: Anchoring with a 135-degree hook at the end of the steel bar, Method 3: Anchoring with welding anchor bars on one side of the end of the steel bar, Method 4: Anchoring with welding anchor bars on both sides of the end of the steel bar, Method 5 : Anchor plate anchoring with perforated plug welding at the end of the steel bar, method 6: Anchoring with the bolt anchor head at the end of the steel bar. [0004] Defects of...

AI Technical Summary

Problems solved by technology

The invention solves the problems of slow welding speed and difficulty in guaranteeing welding quality caused by connecting steel bars and anchor plates by welding; solves the problem that the anchoring of steel bar end hooks affects concrete pouring and the anchoring area is crowded; and solves the local problem that end anchoring is prone to occur Concrete Failure Problems

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