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Intelligent prestressed member welded with macromolecule packaging strain gauge and manufacturing method of intelligent prestressed member

A manufacturing method and polymer technology, which can be used in building components, bridge parts, measuring devices, etc., can solve problems such as poor adhesion and falling off, and achieve the effects of improving sensing sensitivity, good packaging, and avoiding aging and debonding.

Pending Publication Date: 2022-08-02
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an intelligent prestressed component welded with a polymer packaged strain gauge and its manufacturing method, so as to solve the problem in the prior art that the glue is not firmly pasted and falls off due to the aging of the glue

Method used

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  • Intelligent prestressed member welded with macromolecule packaging strain gauge and manufacturing method of intelligent prestressed member
  • Intelligent prestressed member welded with macromolecule packaging strain gauge and manufacturing method of intelligent prestressed member
  • Intelligent prestressed member welded with macromolecule packaging strain gauge and manufacturing method of intelligent prestressed member

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] figure 1 Disclosed is an intelligent prestressed component welded with a polymer packaged strain gauge, including a prestressed rib 1—steel strand, a polymer packaged strain gauge, and the polymer packaged strain gauge includes a strain gauge 2, a foil Sheet 3, polymer sealing plate 4 (see figure 2 ); the foil 3 is a stainless steel foil with a thickness of 0.1mm∼0.2mm, the strain gauge 2 is pasted and fixed on the foil 3, and the polymer sealing plate 4 is made of polytetrafluoroethylene with heat resistance above 250°C The bottom of the polymer sealing plate 4 is bonded and fixed on the foil 3, and the bottom of the polymer sealing plate 4 is provided with a cavity, the cavity is covered on the strain gauge 2, and the cavity is filled with the adhesive 5; the The foil 3 is spot welded on the prestressed rib 1 by a spot welding machine, which is a portable lithium battery spot welding machine, and the spot welding voltage is 1V to 5V.

[0042] The materials used for...

Embodiment 2

[0044] A manufacturing method of an intelligent prestressed component welded with a polymer encapsulated strain gauge, the method comprising the following steps:

[0045] A. Preparation: Prepare the components that make up the polymer package strain gauge, including the strain gauge 2, the foil 3, and the polymer sealing plate 4, and mark the sensitive element positioning line on the foil 3;

[0046] B. Install the strain gauge: bond the strain gauge 2 on the foil 3 with the two-component epoxy resin adhesive H-610;

[0047] C. Install the polymer sealing plate: place the cavity of the polymer sealing plate 4 downward, align the cavity and cover the strain gauge 2, and then use the two-component epoxy resin adhesive on the bottom surface of the polymer sealing plate 4 H-610 is bonded to foil 3;

[0048] D. Glue filling: Fill the cavity of the polymer sealing plate 4 with the two-component epoxy resin adhesive H-610, and encapsulate the strain gauge 2 in the cavity of the poly...

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Abstract

The invention discloses an intelligent prestressed member welded with a macromolecule packaging strain gauge and a manufacturing method of the intelligent prestressed member, and relates to a prestressed member and a manufacturing method of the prestressed member. The strain gauge is pasted and fixed on the foil sheet, the bottom of the polymer sealing plate is pasted on the foil sheet, the cavity of the polymer sealing plate covers the strain gauge, and the cavity is filled with an adhesive; and the foils are fixed on the prestressed tendons through spot welding by a spot welding machine. The method comprises the following steps: A, preparing; b, installing a strain gauge; c, mounting a macromolecular sealing plate: covering the strain gauge with a cavity of the macromolecular sealing plate, and bonding the cavity of the macromolecular sealing plate on the foil; d, pouring glue; e, drying: drying the two-component epoxy resin adhesive; and F, spot welding is conducted, specifically, the foil pieces are fixed to the prestressed tendons in a spot welding mode. According to the invention, debonding caused by glue aging can be avoided, a relatively accurate signal value can be obtained, the offset of the strain gauge can be limited, the mechanical property of the prestressed tendon can be ensured, and the device and the method have important significance for monitoring the prestressed member.

Description

technical field [0001] The invention relates to an intelligent prestressed component and a manufacturing method thereof, in particular to an intelligent prestressed component welded with a polymer packaged strain gauge and a manufacturing method thereof. Background technique [0002] In construction, bridges and other projects, prestressed components are usually used, such as steel strands, steel strand cables, high-strength steel wires, high-strength steel wire cables, prestressed steel bars, etc. In order to achieve static stress on these prestressed components , Dynamic stress monitoring, usually using strain gauges for monitoring. The common installation method of the existing strain gauge is to first polish the surface of the prestressed rib to smooth, and then paste the strain gauge on the surface of the polished prestressed rib. The utility model patent with the authorization announcement number CN209445986U discloses a patch-type fiber grating strain sensor encapsul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C5/08E01D19/00E01D19/16G01B21/32
CPCE04C5/08E01D19/00E01D19/16G01B21/32Y02E60/10
Inventor 邓年春韩中情欧进萍郝天之
Owner GUANGXI UNIV
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