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Composite material winding pipe, inflation core mold and composite material winding pipe machining method

A composite material and winding pipe technology, applied in the field of building materials, can solve the problems of high structural strength and interface slippage, and achieve the effect of good corrosion resistance, good integrity, and improved interface performance.

Pending Publication Date: 2021-08-20
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the present invention proposes a composite material winding pipe, the composite material winding pipe has high structural strength, and when the composite material winding pipe is used in combination with concrete to form a composite material-concrete composite member, it can greatly improve the composite material-concrete composite member. Excellent mechanical properties, which solve the technical problem that the surface of the composite winding pipe is smooth in the prior art, which causes the interface slip phenomenon to occur easily when the composite winding pipe is used in combination with concrete

Method used

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  • Composite material winding pipe, inflation core mold and composite material winding pipe machining method
  • Composite material winding pipe, inflation core mold and composite material winding pipe machining method
  • Composite material winding pipe, inflation core mold and composite material winding pipe machining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0107] A composite winding tube 100, such as figure 1 As shown, it includes: a first structural layer 1, a second structural layer 2 and a shear key 3.

[0108] Among them, such as figure 1 As shown, the second structural layer 2 is connected outside the first structural layer 1 .

[0109] combine figure 1 and figure 2 As shown, the shear key 3 includes a matching portion 31 and a fixing portion 32, the matching portion 31 is connected between the first structural layer 1 and the second structural layer 2, one end of the fixing portion 32 is connected to the matching portion 31, and the other end of the fixing portion 32 One end protrudes from the first structural layer 1 in a direction away from the second structural layer 2 .

Embodiment 2

[0111] A kind of composite material winding pipe 100, different from Embodiment 1, such as figure 1 As shown, the composite winding pipe 100 is a cylindrical pipe, including: a first structural layer 1 , a second structural layer 2 and a shear key 3 .

[0112] Among them, such as figure 1 As shown, the second structural layer 2 is connected outside the first structural layer 1 .

[0113] combine figure 1 and figure 2 As shown, the shear key 3 includes a plurality of shear keys 3 arranged at intervals on the first structural layer 1, the shear key 3 includes a matching portion 31 and a fixing portion 32, the matching portion 31 is a sheet with curvature, and the matching portion 31 is a sheet with a curvature. The part 31 is connected between the first structural layer 1 and the second structural layer 2; the fixed part 32 is rod-shaped, and one end of the fixed part 32 is connected to the mating part 31, and the other end of the fixed part 32 faces away from the second str...

Embodiment 3

[0115] A kind of inflatable mandrel 200, such as Figure 4 As shown, it includes: an air bag 210 and a fixing column 220 .

[0116] Among them, such as Figure 4 As shown, the fixed columns 220 are arranged on opposite sides of the airbag 210, and the airbag 210 is provided with an inflatable and deflated air valve 2101. The airbag 210 is cylindrical as a whole and an inflatable cavity is formed inside, and the surface of the airbag 210 is concave toward the direction of the inflatable cavity. A plurality of fixing grooves 2102 are formed in the fixing grooves 2102, and the fixing part 32 in the composite material wrapping tube 100 of the second embodiment can be positioned in the fixing grooves 2102.

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Abstract

The invention discloses a composite material winding pipe, an inflation core mold and a composite material winding pipe machining method. The composite material winding pipe comprises a first structural layer, a second structural layer and shear keys, the second structural layer is connected to the outside of the first structural layer, each shear key comprises a matching part and a fixing part, the matching parts are connected between the first structural layer and the second structural layer, one ends of the fixing parts are connected with the matching parts, and the other ends extends out of the first structural layer in the direction away from the second structural layer. The composite material winding pipe is used for internally pouring concrete to form a composite material winding pipe-concrete combined member, the shear keys arranged in the interior of the composite material winding pipe-concrete combined member improve the integrity and the mechanical property of the composite material winding pipe-concrete combined member, parts of structures of the shear keys extend out of the first structural layer and is solidified together with the first structural layer, the shear keys cannot damage the composite material winding pipe in the assembling process, the shear keys are tightly combined with the composite material winding pipe, and the structural strength of the winding pipe is improved.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a processing method for a composite winding pipe, an inflatable mandrel and a composite winding pipe. Background technique [0002] Composite winding pipe has many advantages such as good corrosion resistance, light weight, processability, easy design, stable performance, etc. It is widely used in oil and gas transportation, petrochemical, civil construction and other industries. When composite winding pipe is used in civil construction , Composite winding tubes are usually used in combination with concrete to form composite-concrete composite members (beams, columns, shear walls, etc.), among which, the most representative one is the composite winding tube confining concrete, so that composite-concrete composite members Has good mechanical properties. [0003] However, the composite material winding pipe in the prior art is made of composite materials, resulting in a...

Claims

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Application Information

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IPC IPC(8): B29C70/30B29C70/54B29C33/40B29C33/00B29L23/00
CPCB29C33/00B29C33/40B29C70/30B29C70/54B29L2023/22
Inventor 冯鹏李志远胡利
Owner TSINGHUA UNIV
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