Transverse stretching method for prestressed fiber cloth reinforced concrete column

Abstract

The invention discloses a horizontal tensioning method of a reinforcing concrete column by prestressed fiber cloth, fiber cloth is correspondingly arranged in the areas to be reinforced on the concrete column surface along the circumferential direction, the spaces between both ends of the fiber cloth and the concrete column surface are settled, and both ends of the fiber cloth are fixedly arranged; external surfaces horizontally across the both ends of the fiber cloth are respectively provided with horizontal bearing arms; the fiber cloth is pasted on the concrete column surface and fixed directly by moving the horizontal bearing arms and coating adhesive; and the invention alters the traditional longitudinal tensioning fiber cloth to horizontal tensioning fiber cloth, and can achieve equal tensioning effect with horizontal tension which is only 1 / 5 to 1 / 7 time of longitudinal tension, which reduces the demands of tensioning equipments and technique significantly. The invention has the advantages of simple equipment, and low manufacturing cost, is convenient for transportation and carrying, has good tensioning effect for the fiber cloth receives even stress in the tensioning process; and the tensioning operation has little damage to the structure of the original concrete, the manufacturing cost can be greatly saved, the project risk is reduced, the construction period is shortened, and comprehensive benefit of technology and economy is obvious.

Description

Technical field [0001] The invention belongs to the field of building structure engineering, and particularly relates to a transverse tension method for reinforcing a concrete column with a prestressed fiber cloth. Background technique [0002] When the concrete column has longitudinal cracks due to insufficient bearing capacity or external effects such as temperature stress, it can be reinforced with fiber cloth in the circumferential direction to restrain the development of longitudinal cracks and improve its bearing capacity and service life. [0003] Fiber cloth (especially carbon fiber) has excellent physical properties and good adhesion, durability and corrosion resistance, and has the advantages of high strength, small size, light weight, etc., and it is obtained in terms of strengthening the concrete tensile surface Widely used, it has more advantages than other structural reinforcement concrete structures. [0004] In the prior art, the fiber cloth is usually directly pa...

AI Technical Summary

Problems solved by technology

The construction equipment and construction technology of this longitudinal tension technology are too complicated, and it is difficult to obtain a large tension force, so that people generally want to avoid using prestressed fiber cloth to strengthen concrete structures

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