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

Abstract

The invention discloses a novel anchor bolt steel plate reinforcement fire-resistant system and a reinforcement method thereof, belonging to the field of structural engineering. The reinforced refractory system includes reinforced steel plates, reinforced anchor bolts, U-shaped hoops, battens, and construction bolts. The invention uses U-shaped hoop and reinforcement anchor bolts to fix the reinforcement steel plate at the same time, so that the reinforcement steel plate is fastened reliably on the reinforced concrete beam, and the deformation coordination between the reinforcement steel plate and the reinforced concrete beam is ensured; The selection of reinforcement steel plates and reinforcement anchor bolts replaces conventional ordinary carbon steel with high-strength refractory steel, which ensures that the overall structure of the system has a relatively high flexural bearing capacity in a fire, and effectively avoids the need for normal cross-sections. The premature peeling failure of the steel plate significantly improves the fire resistance of the reinforced beam.

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

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