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Tensioning and anchoring device for reinforcing reinforced concrete bridge through prestress FRP(fiber reinforced plastic) cloth and reinforcing method

A technology of reinforced concrete beams and reinforced concrete, applied in bridges, bridge materials, bridge maintenance, etc., can solve the problems of FRP distribution stress level reduction, poor bridge reinforcement effect, high strength, etc., to achieve improved reinforcement efficiency, high strength, and easy operation quick effect

Active Publication Date: 2016-04-20
黑龙江省工研院资产经营管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention solves the problem that the stress level of FRP cloth is lowered due to the existing method of pasting FRP cloth to strengthen the bridge, and the advantage of its high strength cannot be effectively brought into play, resulting in poor bridge reinforcement effect, and further proposes a prestressed FRP cloth to strengthen the reinforced concrete bridge Tension anchor fixing device and reinforcement method

Method used

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  • Tensioning and anchoring device for reinforcing reinforced concrete bridge through prestress FRP(fiber reinforced plastic) cloth and reinforcing method
  • Tensioning and anchoring device for reinforcing reinforced concrete bridge through prestress FRP(fiber reinforced plastic) cloth and reinforcing method
  • Tensioning and anchoring device for reinforcing reinforced concrete bridge through prestress FRP(fiber reinforced plastic) cloth and reinforcing method

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specific Embodiment approach 1

[0017] Specific implementation mode one: combine Figure 1 to Figure 4 Describe this embodiment, the tension anchor fixing device of a kind of prestressed FRP cloth reinforced reinforced concrete bridge described in this embodiment comprises FRP cloth 1, prestressed tension pedestal 2, two tension components, two triangular brackets 3, Two anchor assemblies and two steel rollers 4, two triangular brackets 3 are arranged side by side on the upper surface of the prestressed tensioning pedestal 2, and a steel roller 4 is respectively installed on the upper end of each triangular bracket 3, each triangular bracket The lower end of 3 is respectively provided with one said tensioning assembly, and the two ends of FRP cloth 1 are respectively connected with two said anchoring assemblies, and each said anchoring assembly respectively goes around a steel roller 4 and corresponds to one of said tensioning assemblies. Pull component connections.

specific Embodiment approach 2

[0018] Specific implementation mode two: combination figure 2 Illustrate this embodiment, each described anchor assembly of the tension anchor fixing device of a kind of prestressed FRP cloth reinforced reinforced concrete bridge described in this embodiment is made up of two square hollow beams 5 and two fixing bolts 6, two The square hollow beams 5 are connected by two fixing bolts 6 . The end of the FRP cloth 1 is wound on the square hollow beam 5, and at least two layers of winding are required. After the two square hollow beams 5 are combined and fixed, the FRP cloth is just located between the two square hollow beams 5, which helps to prevent the FRP cloth 1 from disengaging and ensures that the axial prestressing load can be effectively applied. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0019] Specific implementation mode three: combination image 3 and Figure 4 Describe the present embodiment, the tension anchor fixing device of the prestressed FRP cloth reinforced reinforced concrete bridge described in the present embodiment, is characterized in that: each of the tension components includes a first reaction force frame 7, a second reaction force Frame 8, hydraulic jack 9, pressure sensor 10, steel plate 11, reaction beam 12, multiple first threaded anchor rods 13 and multiple second threaded anchor rods 14, first reaction force frame 7, hydraulic jack 9, pressure sensor 10. The second reaction force frame 8, the steel plate 11, and the reaction force beam 12 are arranged sequentially from top to bottom. The upper end of the hydraulic jack 9 is connected to the lower surface of the first reaction force frame 7. The lower end of the hydraulic jack 9 is connected to the pressure sensor 10 by the pressure sensor 10. The second reaction force frame 8 is conne...

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Abstract

The invention relates to a tensioning and anchoring device and a reinforcing method, in particular to a tensioning and anchoring device for reinforcing a reinforced concrete bridge through prestress FRP(fiber reinforced plastic) cloth and a reinforcing method. The device aims to solve the problems that due to an existing method of reinforcing the bridge by pasting the FRP cloth, the stress level of the FRP cloth is reduced, the advantage of high strength can not be given into full play effectively, and the reinforcing effect of the bridge is poor. The device comprises the FRP cloth, a prestress tensioning pedestal, two tensioning assemblies, two triangular supports, two anchoring assemblies and two steel rollers. The two triangular supports are arranged on the upper surface of the prestress tensioning pedestal side by side. One steel roller is installed at the upper end of each triangular support. One tensioning assembly is arranged at the lower end of each triangular support. The two ends of the FRP cloth are connected with the two anchoring assemblies respectively. Each anchoring assembly is wound around one steel roller and connected with one corresponding tensioning assembly. The device belongs to the field of bridge building.

Description

technical field [0001] The invention relates to a tension anchor fixing device and a reinforcement method, in particular to a tension anchor fixing device and a reinforcement method for a reinforced concrete bridge reinforced with prestressed FRP cloth, and belongs to the field of road and bridge construction. Background technique [0002] Reinforced concrete bridges usually have insufficient functions and ultimate bearing capacity due to the following reasons. These factors include: first, congenital defects in design; second, increase in service load; third, structural damage caused by collision and corrosion Reduced load-carrying capacity due to damage. In order to maintain the normal use of these degraded bridge structures, it is necessary to strengthen such bridge structures to improve their performance. [0003] Fiber-reinforced resin-based composite material FRP has the advantages of small specific gravity, high strength, corrosion resistance, and easy-to-fabricate g...

Claims

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Application Information

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IPC IPC(8): E01D22/00E01D101/28
CPCE01D22/00E01D2101/28
Inventor 张连振
Owner 黑龙江省工研院资产经营管理有限公司
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