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Test device and test method for measuring circumferential tensile property of composite material pipe for structural engineering

A composite material and structural engineering technology, applied in measuring devices, using stable tension/pressure to test the strength of materials, analyzing materials, etc., can solve problems such as poor adaptability, and achieve the effect of wide applicability

Pending Publication Date: 2021-08-13
SOUTH CHINA AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After adopting this structure, the measurement accuracy is high and the versatility is strong, which solves the problem of poor adaptability of the fixed-size split disc to the diameter deviation of the composite pipe

Method used

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  • Test device and test method for measuring circumferential tensile property of composite material pipe for structural engineering
  • Test device and test method for measuring circumferential tensile property of composite material pipe for structural engineering
  • Test device and test method for measuring circumferential tensile property of composite material pipe for structural engineering

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Embodiment Construction

[0088] The present invention will be described in further detail below in conjunction with specific embodiments.

[0089]A test device for measuring the hoop tensile properties of composite material pipes for structural engineering, including two tensile arc-shaped steel blocks, two fixed arc-shaped steel blocks, four screws, connecting nodes, two connectors, and two support rods , traction mechanism, axial strain gauge, and ring strain gauge; the four screws are all fixed to the connection nodes, and the four screws are distributed in a cross shape; one end of the connector is a screw, and the other end of the connector is a nut; two fixed arcs The inner surface of the steel block is provided with threaded holes, the screw end of the connecting piece is threadedly connected with the threaded hole of the fixed arc-shaped steel block, the nut end of the connecting piece is threadedly connected with the screw rod, and the two connecting pieces are arranged in a line; one end of t...

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Abstract

The invention relates to a test device for measuring the circumferential tensile property of a composite material pipe for structural engineering. The test device comprises two tensioning arc-shaped steel blocks, two fixed arc-shaped steel blocks, four screw rods, a connecting node, two connecting pieces, two supporting rods, a traction mechanism, an axial strain gauge and an annular strain gauge, the four screw rods are fixed with the connecting joints; the connecting pieces are in threaded connection with the fixed arc-shaped steel blocks, the connecting pieces are in threaded connection with the screw rods, and the two connecting pieces are arranged in a straight line shape; the supporting rods are in threaded connection with the screw rods, the supporting rods abut against the inner side faces of the tensioning arc-shaped steel blocks, and the two supporting rods are arranged in a straight line shape; the traction mechanism is detachably connected with the two tensioning arc-shaped steel blocks; and the axial strain gauge and the circumferential strain gauge are arranged on the outer surface of the annular sample. The invention also relates to a test method for measuring the circumferential tensile property of the composite material pipe for structural engineering. The method is high in measurement precision and high in universality, and belongs to the technical field of structural material performance detection in civil engineering.

Description

technical field [0001] The invention relates to a performance detection technology of structural materials in civil engineering, in particular to a test device and a test method for measuring the hoop tensile performance of composite material pipes used in structural engineering. Background technique [0002] As a new type of material, Fiber Reinforced Polymer (FRP) has excellent properties such as high strength and good corrosion resistance. It has been widely used in the field of civil engineering in recent years, and the most typical application is fiber reinforced Composite material pipes (hereinafter referred to as: composite material pipes) confine concrete. Composite tubes can be handmade by wet laying or directly by pultrusion or filament winding. Under the action of axial pressure, the lateral expansion of concrete can be effectively constrained by the fibers arranged close to the ring, thus greatly improving the strength and ductility of the member. For composite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N3/04G01N3/02
CPCG01N3/08G01N3/04G01N3/02G01N2203/0017G01N2203/0274
Inventor 谢攀刘少锋陈光明
Owner SOUTH CHINA AGRI UNIV
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