A Replaceable Strengthening Method for Beam Structure

Abstract

The invention provides a replaceable reinforcing method for a girder structure. The method specifically comprises steps as follows: Step 1, a girder to be reinforced is cleaned and flattened, and a position is designed at the bottom of the girder for drilling; Step 2, a chemical anchor bolt is embedded in a hole, reserved for mounting of a carbon fiber plate, in the bottom of the girder, a carbon fiber plate tension device and a carbon fiber plate assembly part are mounted, and the carbon fiber plate is tensioned to the designed tension; Step 3, an anchor bolt is mounted in a hole, reserved for mounting of a steel plate, in the bottom of the girder, and the pretreated steel plate is fixed at the bottom of the girder through the anchor bolt; Step 4, the reinforcing quality of the carbon fiber plate and the steel plate is checked, the size is mainly checked, and anchoring is performed. The replaceable reinforcing design concept is adopted, secondary reinforcement is performed by replacing a reinforcing material after a reinforcing structure serves for a certain period, the carrying capacity and durability of the girder structure are effectively maintained, and the service life of the structure is prolonged.

Description

technical field [0001] The invention belongs to the technical field of civil engineering and relates to a replaceable reinforcement method for a beam structure. Background technique [0002] With the development of society, the country has higher and higher requirements for building energy conservation, safety and environmental protection. Overall, the number of new construction projects in the future will gradually decrease, and the construction speed will gradually slow down. The reinforcement of existing structures , maintenance and transformation will become the mainstream development direction. [0003] Commonly used reinforcement methods in engineering practice include: reinforcement method of enlarging section, reinforcement method of adding fulcrum, prestress reinforcement method, reinforcement method of sticking steel plate, etc. Strengthening the structure with the above reinforcement method can effectively improve the resistance of the structure, but under the du...

AI Technical Summary

Problems solved by technology

Strengthening the structure with the above reinforcement method can effectively improve the resistance of the structure, but under the dual effects of load and environment, the structure will inevitably experience damage accumulation and resistance attenuation, and cannot be in a safe bearing range for a long time. The biggest problem is that the reinforced beam structure cannot maintain its load-bearing capacity under long-term action. One-time reinforcement cannot effectively prolong the fatigue life, and secondary reinforcement is required.

The cost of secondary reinforcement of the structure is high, the construction is difficult, and the reinforcement effect is poor

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