Fiber sheet tensioning device and its tensioning method

Abstract

The invention discloses a prestressed fiber board tensioning device. A groove(s) is / are formed in one end / two ends of the reinforced position of the surface of a beam plank; a fixing steel plate is arranged in the groove; a fiber board is fixed to the reinforced position, one end of the fiber board is fixed to the beam plank / the fixing steel plate, and the other end of the fiber board is fixed to the fixing steel plate; the fiber board and the fixing steel plate are fixed by a first anchoring steel plate and a second anchoring steel plate; the first anchoring steel plate is arranged at the end of the fixing steel plate in the length direction, and the second anchoring steel plate is arranged at the other end of the fixing steel plate in the length direction. According to the invention, the bonding performance of the fiber board and a concrete beam can be obviously improved, a reinforcement material, such as the fiber board, is fully bonded to the reinforced beam plank, the use efficiency of the material is improved, anchorage segments are effectively prevented from tilting, and the reinforcement effect is enhanced.

Description

technical field [0001] The invention belongs to the reinforcement field of slab girders and slab girder bridges, and in particular relates to a high-performance prestressed fiber plate stretching and strengthening concrete beam slab device and a stretching method thereof. Background technique [0002] Reinforced concrete structure is the most widely used structural form in engineering practice. Due to various reasons such as poor construction quality, changes in building functions, structural overloading, and long-term exposure to harsh environments, the original buildings could not meet the structural requirements and needed to be reinforced. Paste steel plate or high-performance fiber plate reinforced concrete technology is a new type of structural reinforcement technology, which basically does not change the size of the original structure, and has the advantages of simple construction, reliable technology, good short-term reinforcement effect and mature technology. Howev...

AI Technical Summary

Problems solved by technology

However, due to the low bonding strength between the concrete and the sheet, its flexural strength cannot be greatly improved, and certain additional anchoring measures are required.

Anchoring at the end is a very common anchoring method used in engineering practice, but it often occurs that the sheet material is warped at the anchorage section and cannot be completely bonded to the bottom of the beam, which reduces the use efficiency of the sheet material and weakens the fixation. Effect

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