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Construction method for strengthening concrete beam through multi-layer prestressed fiber cloth

A construction method and technology of fiber cloth, applied in bridge reinforcement, bridge, building maintenance, etc., can solve the problems of unequal length of multi-layer fiber cloth, cumbersome construction methods, uneven force, etc., and achieve convenient tensioning operation and reinforcement Good effect and small loss of prestress

Active Publication Date: 2019-07-19
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The multi-layer prestressed fiber cloth reinforced concrete structure has the problems of unequal length of multi-layer fiber cloth, uneven stress, cumbersome construction methods and low anchoring efficiency. In order to solve the above problems, the present invention provides a multi-layer prestressed fiber cloth Construction method of cloth reinforced concrete beam

Method used

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  • Construction method for strengthening concrete beam through multi-layer prestressed fiber cloth
  • Construction method for strengthening concrete beam through multi-layer prestressed fiber cloth
  • Construction method for strengthening concrete beam through multi-layer prestressed fiber cloth

Examples

Experimental program
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Effect test

Embodiment

[0076] Such as Figure 1-28 As shown, this embodiment utilizes a tensioning and anchoring device for multi-layer prestressed fiber cloth reinforced beams, takes reinforced concrete beams as the reinforcement object, and adopts eight layers of prestressed carbon fiber cloth to reinforce it, and the width of carbon fiber cloth is 150mm. The construction steps are as follows:

[0077] (1) A tensioning and anchoring device for a multi-layer prestressed fiber cloth reinforced beam is provided, including a fixed end support 1A, a tension end support 1B, a fixed end anchor 2A, and a tension end anchor 2B, two clips 3, two anchor short screws 6A, two anchor long screws 6B, eight chemical bolts 7, fiber cloth 8, prestressing frame 4 and jack 5.

[0078] The fixed end support 1A is T-shaped. There are four oval through-holes I1A1 for installing chemical bolts 7 on it, and a circular anchor hole I1A2 for connecting with fixed-end anchorage 2A on each side.

[0079] The tension end sup...

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Abstract

The invention discloses a construction method for strengthening a concrete beam through a multi-layer prestressed fiber cloth. A tensioning and anchoring device of a multi-layer prestressed fiber cloth reinforced beam is arranged, and includes a fixed end support, a tensioning end support, a fixed end anchor, a tensioning end anchor, a clamping piece, an anchoring short screw, an anchoring long screw, a chemical bolt, a fiber cloth, a prestressed applied frame and a jack. Tensioning and anchoring of the fiber cloth are realized by the tensioning and anchoring device of the multi-layer prestressed fiber cloth reinforced beam. According to the construction method, operation is convenient, large prestress can be applied, the multi-layer fiber cloth has uniform stress and the equal length, andmeanwhile, the prestressed applied frame can be reused.

Description

technical field [0001] The invention relates to a construction method for reinforcing concrete beams by using multi-layer prestressed fiber cloth. The method utilizes tensioning and anchoring devices of multi-layer pre-stress fiber cloth to realize the reinforcement construction of concrete beams, and belongs to the field of building bridge engineering reinforcement. Background technique [0002] Fiber composite reinforced materials have the characteristics of high unidirectional tensile strength, light weight, high elastic modulus, small volume, and corrosion resistance. After reinforcement, the cross-section and load of the original structural members do not increase significantly, so they are widely used in concrete structures. Reinforcing. In the prior art, most of the non-prestressed reinforcement methods are used, or only single or double-layer prestressed fiber cloth is used to strengthen the concrete structure. For the construction method of strengthening the concret...

Claims

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Application Information

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IPC IPC(8): E01D22/00E01D2/04E04G23/02
CPCE01D2/04E01D22/00E04G23/0218
Inventor 王强李柏林卢春玲朱万旭
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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