Reinforced Concrete Beam Sticking Steel Plate Pressure Fixing Device and Reinforcement Method

Abstract

The invention discloses a pressurizing and fixing device and a reinforcing method for an adhered steel plate of a reinforced concrete beam. The pressurizing and fixing device comprises the reinforced steel plate and a pressurizing assembly. The reinforced steel plate is adhered on the surface of a to-be-reinforced beam, can be fixed at an earlier stage by the aid of the pressurizing assembly and is adhered on the surface of the to-be-reinforced beam by a structural adhesive layer; the pressurizing assembly comprises a bottom fixing steel member and beam rib fixing reinforcing steel bars, the beam rib fixing reinforcing steel bars are positioned on two wings, one end of each beam rib fixing reinforcing steel bar is connected with the bottom fixing steel member by a fastener, and the other end of each beam rib fixing reinforcing steel bar is fixed to the surface of the to-be-reinforced beam. The reinforcing method includes preliminarily anchoring the two beam rib fixing reinforcing steel bars in the middles of two sides of the to-be-reinforced beam; brushing the structural adhesive layer on the bottom surface of the beam, and adhering the high-strength reinforced steel plate on the bottom surface of the to-be-reinforced beam; connecting the bottom fixing steel member with the two beam rib fixing reinforcing steel bars by fixing bolts, and jacking the reinforced steel plates by the aid of the bottom fixing steel member and the beam rib fixing reinforcing steel bars; relaxing the reinforced steel plate after the requirement on the designed strength is met, disassembling the pressurizing assembly and completing a reinforcing procedure. The pressurizing and fixing device and the reinforcing method have the advantages of simple structure, low cost, good reinforcing effects, convenience in mounting and construction and the like.

Description

technical field [0001] The invention relates to the technical field of building structure reinforcement and concrete structure reinforcement, in particular to a fixing device and method for reinforcing reinforced concrete beams. Background technique [0002] In various industrial and civil buildings, structures, bridges, culverts and tunnels and other engineering structures, concrete structures are the most widely used structures. Due to various reasons, such as the aging and damage of the concrete structure, the original design standard is low, etc., the strength (bearing capacity) and stiffness of the concrete structure cannot meet the normal use requirements. Reinforcing the existing concrete structure, improving its bearing capacity, and prolonging its service life have become widely concerned engineering and technical issues. [0003] At present, among the commonly used concrete structure reinforcement methods, the bonded steel reinforcement method and the carbon fiber...

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Problems solved by technology

[0003] At present, among the commonly used concrete structure reinforcement methods, the bonded steel reinforcement method and the carbon fiber cloth reinforcement method are widely used. Although these two methods can effectively improve the ultimate bearing capacity of the structure in the damage stage, they have a negative effect on the bearing capacity and the normal use stage of the structure. The improvement in stiffness is not obvious

The traditional fixing device uses a vertical support at the bottom of the beam. This fixing device often affects the use of the space under the reinforced beam, and it is labor-intensive and time-consuming to add a support.

In some other reinforcement methods, the reinforcement device is permanently reinforced on the component to be reinforced as a part of the reinforcement component, which seems uneconomical.

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