Construction method of prestressing force fiber cloth reinforcing column adopting detachable tensioning anchorage device

A construction method and fiber cloth technology, which are used in bridge reinforcement, building maintenance, bridge maintenance, etc., can solve the problem that the prestress value of the fiber cloth does not reach the expectation, the bending deformation of the clip or the roller is large, and the tension anchor is not repeatable. Use and other problems to achieve the effect of convenient operation, increase friction, and avoid slippage

Pending Publication Date: 2018-03-13
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the tension anchor devices for concrete piers reinforced by prestressed fiber cloth are permanent, and the tension anchors cannot be reused, and the cost is high
And the anchorage is exposed on the surface of the pier column, which not only affects its durability but also has a certain impact on the appearance of the structure
In addition, in the commonly used tensioning anchors, the fiber cloth is wound on the clip or roller. When the fiber cloth is wide or the prestress is large, the clip or roller will bend and deform greatly during tension, making the prestress value of the fiber cloth less than expected

Method used

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  • Construction method of prestressing force fiber cloth reinforcing column adopting detachable tensioning anchorage device
  • Construction method of prestressing force fiber cloth reinforcing column adopting detachable tensioning anchorage device
  • Construction method of prestressing force fiber cloth reinforcing column adopting detachable tensioning anchorage device

Examples

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Effect test

Embodiment 1

[0034] Such as figure 1 , 2 , 3, 4, 10, 11, 12 and 13, this embodiment takes the reinforced concrete square column 7 as the reinforcement object, and utilizes a detachable prestressed fiber cloth tensioning anchorage device to reinforce it , the width of the fiber cloth 6 is 150mm. Specific steps are as follows:

[0035](1) A prestressed fiber cloth tensioning anchoring device with detachable tensioning anchors is provided, which includes two anchor plates 1, two splints 2, two tensioning anchors 3, and two tensioning screws 4 And two anchoring screws 5 and fiber cloth 6 for maintaining the prestress; the anchor plate 1 is composed of the anchor plate anchor head 11 and the anchor plate body 12 at both ends of the anchor plate 1, and the center of the anchor plate anchor head 11 at both ends of the anchor plate 1 is parallel to the fiber An anchor screw hole 111 is opened in the wrapping direction of the cloth 6, and an anchor plate installation hole 121 is opened at the ce...

Embodiment 2

[0046] Such as Figure 5-14 As shown, in this embodiment, the reinforced concrete cylinder 8 is used as the reinforcement object, and it is reinforced by a detachable prestressed fiber cloth tensioning anchorage device. The width of the fiber cloth 6 is 150 mm. Specific steps are as follows:

[0047] (1) A prestressed fiber cloth tensioning anchoring device with detachable tensioning anchors is provided, which includes two anchor plates 1, two splints 2, two tensioning anchors 3, and two tensioning screws 4 And two anchoring screws 5 and fiber cloth 6 for maintaining the prestress; the anchor plate 1 is composed of the anchor plate anchor head 11 and the anchor plate body 12 at both ends of the anchor plate 1, and the center of the anchor plate anchor head 11 at both ends of the anchor plate 1 is parallel to the fiber An anchor screw hole 111 is opened in the wrapping direction of the cloth 6, and an anchor plate installation hole 121 is opened at the center of the upper and ...

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Abstract

The invention discloses a construction method of a prestressing force fiber cloth reinforcing column adopting a detachable tensioning anchorage device. A prestressing force fiber cloth tensioning andanchoring device adopting a detachable tensioning anchorage device comprises two anchor plates, two clamping plates, two tensioning anchorage devices, two tensioning screw rods, two anchoring screw rods and a fiber cloth. The construction method comprises the following steps of determining a position to be reinforced, performing grinding, performing hole repairing, and coating an epoxy glue layer;then completing the connection of the fiber cloth with the tensioning anchorage devices, as well as the connection of the anchor plates with the clamping plates; wrapping the position to be reinforced and coated with the epoxy glue layer with the connected fiber cloth; screwing the tensioning screw rods to exert prestressing force on the fiber cloth; synchronously screwing the anchoring screw rods to maintain the prestressing force on the fiber cloth; unscrewing big bolts between the tensioning anchorage devices and the clamping plates; and discharging the tensioning anchorage devices and thetensioning screw rods, so that the reinforcing construction of a reinforced concrete pier can be realized. The construction method disclosed by the invention is good in reinforcing effects and convenient to operate; and the tensioning anchorage devices and the tensioning screw rods can be disassembled and repeatedly used, so that the cost is saved.

Description

technical field [0001] The invention belongs to the field of structural reinforcement such as bridge engineering and construction engineering, and particularly relates to a construction method of a prestressed fiber cloth reinforced column using a detachable tension anchor. Background technique [0002] Due to the local damage of the structure and the aging of materials, the original components of buildings and bridge piers cannot meet the requirements of bearing capacity, so they need to be reinforced. During reinforcement, the concrete is in a three-dimensional compression state by providing lateral restraint to the pier column, thereby improving the ultimate bearing capacity and ductility of the concrete. At present, the commonly used methods of prestressing and strengthening pier columns include prestressing steel hoops, steel strips, fiber cloth, steel strands, etc. Compared with traditional reinforcement materials, Fiber Reinforced Plastics (FRP) has the advantages of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00E04G23/02
CPCE01D22/00E04G23/0218
Inventor 王强卢春玲刘传超
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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