Novel anchor bolt steel plate reinforcing fire-proof system and reinforcing method thereof

Abstract

The invention discloses a novel anchor bolt steel plate reinforcing fire-proof system and a reinforcing method thereof, and belongs to the field of structural engineering. The novel anchor bolt steelplate reinforcing fire-proof system comprises a reinforcing steel plate, a reinforcing anchor bolt, a U-shaped hoop, a pressing strip and a construction bolt. According to the novel anchor bolt steelplate reinforcing fire-proof system and the reinforcing method thereof, the reinforcing steel plate is simultaneously fixed by adopting the U-shaped hoop and the reinforcing anchor bolt, so that the reinforcing steel plate is reliably fastened on a reinforced concrete beam, and the deformation coordination between the reinforcing steel plate and the reinforced concrete beam is ensured; and the novel anchor bolt steel plate reinforcing fire-proof system changes selected materials of reinforcing steel bars, the reinforcing steel plate and the reinforcing anchor bolt, conventional common straightcarbon steel is replaced by steel with high-strength fireproof properties, it is ensured that the integral structure of the system has relatively high anti-bending bearing capability in a fire, the situation that a normal-section steel plate is stripped and damaged too early is effectively avoided, and the fire-resistant performance of the reinforcing beam is obviously improved.

Description

technical field [0001] The invention belongs to the field of structural engineering, and in particular relates to an anchor bolt steel plate reinforcement refractory system and a reinforcement method for reinforcement and reinforcement of concrete components in buildings and bridge structures. Background technique [0002] At present, the reinforcement methods of concrete beams refer to ("Code for Design of Reinforcement of Concrete Structures" GB50367-2013), mainly including enlarging section method, outsourcing steel reinforcement method, paste steel plate reinforcement method, paste fiber composite material reinforcement method and prestress reinforcement method, etc. . Among them, the pasting steel plate reinforcement method is widely used in the reinforcement of reinforced concrete beams due to its good reinforcement effect and convenient construction. [0003] The so-called steel plate reinforcement method is to bond the steel plate to the surface of the concrete comp...

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Problems solved by technology

However, the traditional bonded steel reinforcement method is very prone to stripping of the steel plate on the reinforcement surface, resulting in premature failure of the reinforcement structure, while the anchor bolt reinforcement system requires a large gap between the anchor bolt and the anchor bolt hole due to the construction process requirements, resulting in reinforcement. The force coordination between the steel plate and the original structure is poor

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