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Prestress tensioning anchorage device for FRP (Fiber Reinforce Plastic) ribs

An anchoring device and prestressing technology, applied in the processing of building materials, structural elements, building components, etc., can solve the problems of not being developed rapidly, not easy to bend, and low shear strength of FRP tendons, and achieve simple system and good construction Low cost, low cost effect

Inactive Publication Date: 2015-04-22
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although a large number of related researches have been carried out at home and abroad, the application of FRP bars in the field of prestressing has not been developed rapidly due to their own shortcomings such as low shear strength and not easy to bend.

Method used

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  • Prestress tensioning anchorage device for FRP (Fiber Reinforce Plastic) ribs
  • Prestress tensioning anchorage device for FRP (Fiber Reinforce Plastic) ribs
  • Prestress tensioning anchorage device for FRP (Fiber Reinforce Plastic) ribs

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] Such as Figure 1-3 As shown, a prestressed FRP tendon tensioning anchor device includes an anchoring device for anchoring FRP tendons 1 and a tensioning device for tensioning FRP tendons 1, and the anchoring device includes a sleeve 2 and a limit nut 3 And the anchor pad 4, the tensioning device includes a tensioning rod 5, a reaction force brace 7 and a force application device 6;

[0022] The anchor backing plate 4 is connected with the stop nut 3, the sleeve 2 is a hollow structure, the hollow part is a cylinder or a cone and the inside is filled with bonding resin for anchoring the FRP rib 1, the outer surface of the sleeve 2 All are provided with external threads, the limit nut 3 is fixed on the sleeve 2 through external threads, the anchor plate 4 is provided with a hole that allows the sleeve 2 to pass through freely; the inner ...

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Abstract

The invention discloses a prestress tensioning anchorage device for FRP (Fiber Reinforce Plastic) ribs. The tensioning anchorage device comprises an anchorage device and a tensioning device, wherein the anchorage device comprises a sleeve, a limiting nut and an anchor backing plate; the tensioning device comprises a tensioning rod, a counterforce arm brace and a force application device; the anchor backing plate is connected with the limiting nut, the sleeve is of a hollow structure, the hollow part of the sleeve is a cylinder or a cone which is filled with bonding resin for anchoring FRP ribs, an outer screw thread is arranged on the complete outer surface of the sleeve, the limiting nut is fixed on the sleeve through the outer screw thread, and the anchor backing plate is provided with a hole through which the sleeve can pass freely; and an inner screw thread is arranged on the inner surface of the sleeve, the sleeve is directly connected with the tensioning rod through the inner screw thread, and the part, connected with the sleeve, of the tensioning rod is provided with an outer screw thread or is subjected to tapping treatment, or the sleeve is connected with the tensioning rod through a connecting sleeve and an internal hexagonal stud is pressed and screwed in the inner screw thread position. The prestress tensioning anchorage device for FRP ribs disclosed by the invention can be used for reinforcing existing structures as well as enhancing newly-built structures.

Description

technical field [0001] The invention relates to a tensioning and anchoring device for prestressed FRP tendons, which is mainly (but not exclusively) used in the fields of reinforcement of existing structures and reinforcement of new structures. Background technique [0002] Traditional prestressing materials are mostly steel bars and steel strands, etc. Under the background that prestressing technology is becoming more and more common and its application fields are becoming more and more extensive, there are corresponding problems. The most prominent problem is the traditional prestressing. The material has disadvantages such as poor durability and poor corrosion resistance. The emergence of fiber reinforced composites (FRP) and its popularization and application in the field of civil engineering have greatly broadened the application fields of structural reinforcement and prestressing technology. Although a lot of related research has been carried out at home and abroad, t...

Claims

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Application Information

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IPC IPC(8): E04C5/12E04G21/12
Inventor 杨会峰刘伟庆鞠冬冬朱文祥徐伟陆伟东
Owner NANJING UNIV OF TECH
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