Method for reinforcing concrete structure by using prestressed fiber cloth

A fiber cloth and prestressing technology, which is applied in building maintenance, building construction, and building material processing, can solve the problems of uneven tensioning and anchoring of fiber cloth, complicated construction technology, and reduced work efficiency, so as to achieve force application Uniformity, simple and easy operation, shortening the construction period

Inactive Publication Date: 2010-05-26
周劲宇 +1
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The construction equipment structure and construction technology of the fiber cloth longitudinal tensioning technology are too complicated, which increases the difficulty of construction and reduces the work efficiency, and because the fiber cloth requires a large tension force, it is difficult to obtain a large tension with the exis

Method used

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  • Method for reinforcing concrete structure by using prestressed fiber cloth
  • Method for reinforcing concrete structure by using prestressed fiber cloth
  • Method for reinforcing concrete structure by using prestressed fiber cloth

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Embodiment Construction

[0029] figure 1 It is a structural schematic diagram after the tensioning equipment is installed for the present invention, figure 2 for figure 1 A to the view, image 3 for figure 1 B direction view, as shown in the figure: the method for reinforcing the concrete structure with the prestressed fiber cloth of the present embodiment comprises the following steps:

[0030] a. Arranging tensioning equipment: the tensioning equipment includes a tensioning reaction beam 8, a tension rod 16 and a tensioning connecting plate 6, and the tensioning reaction beam 8 includes a fixed beam section 8a and a tensioning beam section 8b, The fixed beam section 8a is fixedly arranged on the surface 1b of the concrete column adjacent to the surface 1a of the concrete column 1 to be reinforced, the tension beam section 8b extends out of the surface 1b of the concrete column along the transverse direction, and the tension rod 16 is parallel to the concrete column to be reinforced One end of t...

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Abstract

The invention discloses a method for reinforcing concrete structure by using prestressed fiber cloth. The fiber cloth anchorage and tension stressed region adopts a wedge structure which is opposite to the prestressing direction; the tensioning equipment using a simple structure with tension counterforce beams and tension rods has the advantages of simple structure, light weight and simple operation; and the anchorage and tension stressed region in the wedge structure enables the fiber cloth to be stressed uniformly in the process of tensioning and anchorage, and the fiber cloth can not be damaged when large tensioning force is applied, so that the fiber cloth reaches large longitudinal tensioning force without prestressing loss, thereby inhibiting the production and development of longitudinal cracks in concrete posts. The tensioning operation of the invention can do little damage to the original concrete structure, and thus, the invention can greatly save the construction cost, reduce the engineering risk and shorten the construction period, and has obvious technical and economic comprehensive benefits.

Description

technical field [0001] The invention belongs to the field of building structure engineering, in particular to a method for reinforcing concrete structures with 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 by pasting 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, good adhesion, durability and corrosion resistance, and has the advantages of high strength, small size, light weight, etc., and has been used to strengthen the tensile surface of concrete. Widely used, it has more advantages than other structural reinforced concrete structures. [0004] In the prior art, in order to take advantage of its high strength, carbon fiber cloth is ...

Claims

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Application Information

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IPC IPC(8): E04G21/12E04G23/02
Inventor 周劲宇周志祥
Owner 周劲宇
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