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FRP bar connection device, connection method and anchor rod

A connecting device and casing technology, which is applied in the installation of bolts, earthwork drilling, structural elements, etc., can solve the problems of easy damage of joint parts, and achieve the effect of environmental protection and cost reduction

Inactive Publication Date: 2014-05-07
SHANGHAI KNP CHEM +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem that the joints are easily damaged in the existing FRP bar connection technology. The present invention mainly adopts the following technical solutions

Method used

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  • FRP bar connection device, connection method and anchor rod
  • FRP bar connection device, connection method and anchor rod
  • FRP bar connection device, connection method and anchor rod

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Embodiment Construction

[0022] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] FRP is the abbreviation of Fiber Reinforced polymer (fiber reinforced material), generally including GFRP, CFRP, AFRP and other fiber reinforced plastics.

[0024] An FRP tendon connection device, the related parts include a first hollow sleeve 10 and a second hollow sleeve 20 . Such as figure 2 As shown, one end of the first hollow sleeve 10 is provided with an external thread 14, and there are one or more through holes on the inner wall according to the amount and efficiency of the grouting material, and figure 2 Shown are two through holes forming a first external channel 12 into which grouting compound can be injected. Such as image 3 As shown, one end of the second hollow casing 20 is provided with an internal thread 24, and the internal thread 24 is spirally matched with the external thread 14 of the first...

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Abstract

The invention provides an FRP bar connection device. The FRP bar connection device comprises a first hollow casing pipe equipped with a first external channel and an end part external screw thread and a second hollow casing pipe equipped with a second external channel and an end part internal screw thread. The external screw thread and the internal screw thread form a spiral fit. By utilization of a grouting material injected through the first external channel, one end of the FRP bar is tightly fasten with the inner surface of the first hollow casing pipe. By utilization of a grouting material injected through the second external channel, the other end of the FRP bar is tightly fasten with the inner surface of the second hollow casing pipe. The invention also provides an FRP bar connection method and an anchor rod. The cost is lowered effectively without affecting basic performances of the FRP bar and the materials are environmentally friendly.

Description

technical field [0001] The invention relates to an FRP tendon connecting device, which enables FRP tendons (including fiber reinforced plastics such as GFRP, CFRP, and AFRP) to be applied to the field of prestressing, solves the technical bottleneck of the application of FRP tendons in civil engineering, and makes the application of FRP tendons unnecessary. Restricted. At the same time, the present invention also provides a method for connecting FRP tendons and an anchor rod including the above-mentioned FRP tendon connecting device. Background technique [0002] The traditional FRP tendon connection method is to use epoxy resin for bonding. This method uses a large amount of epoxy resin and its curing agent, which is not economical but also causes a lot of waste and environmental pollution. In particular, the FRP bar joints made by this method cannot exert the characteristics of high strength and high modulus of FRP bars, which greatly limits the application of FRP bars. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C5/16E02D5/74E21D21/00
Inventor 吴辉生胡勇张杰何唯平
Owner SHANGHAI KNP CHEM
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