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High-bearing-capacity integrally-formed composite material joint and manufacturing method

A technology of integral molding and manufacturing method, which is applied in the direction of building structure, construction, bridge construction, etc., can solve the problems of low bearing capacity of the connection method and complicated manufacturing process, and achieve convenient molding process, good fatigue performance and high connection efficiency Effect

Pending Publication Date: 2022-05-31
中国人民解放军63983部队
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the problems of low bearing capacity and complex manufacturing process of the connection method in the prior art, thereby providing a high bearing capacity integrally formed composite material joint and its manufacturing method

Method used

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  • High-bearing-capacity integrally-formed composite material joint and manufacturing method
  • High-bearing-capacity integrally-formed composite material joint and manufacturing method
  • High-bearing-capacity integrally-formed composite material joint and manufacturing method

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Embodiment 1

[0033] Such as figure 1 and figure 2 As shown, the present embodiment provides a high bearing capacity integrally formed composite material joint, comprising a metal inner core 1, a middle balsa wood core layer 2, and an outer winding layer 3. A metal inner core 1 is respectively provided at both ends of the joint, and at the same time The two metal inner cores 1 and the middle balsa wood core layer 2 are connected by glue bonding, and the outer winding layer 3 is arranged on the assembled surface of the metal inner core 1 and the middle balsa wood core layer 2, and the outer winding layer 3 includes five kinds of CFRP prepreg fabrics with different winding angles. The outer surface of the outer winding layer 3 after winding is provided with a number of bolt holes, and high-strength bolts 4 are installed in the bolt holes, that is, the outer winding layer 3 passes through the bolts and the metal inner core 1 and The middle balsa wood core layers 2 are connected to each other...

Embodiment 2

[0044] A method for manufacturing a high-bearing-capacity integrally formed composite joint. In the manufacturing method, the inner core of the joint and the externally wound CFRP are jointly stressed through the bonding force between the bolt and the surface of the structure, and finally a high-bearing-capacity integrally formed joint is obtained. , including the following steps:

[0045] Step S1: Assembling the inner core of the joint; processing the metal inner core 1 at both ends and the middle balsa wood core layer 2, bonding the metal inner core 1 at both ends and the middle balsa wood core layer 2 into one body by glue, and the metal inner core 1 and the middle The balsa wood core layer 2 is bonded and fixed, and the inner core of the joint is adjusted by the tooling to make it straight. A layer of fiber felt, after curing, polish the surface, and polish the four corners of the inner line of the joint;

[0046] Step S2: Wrap CFRP prepreg; Wrap CFRP prepreg layer by lay...

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Abstract

The invention relates to a high-bearing-capacity integrally-formed composite material connector which comprises metal inner cores, a middle cyperus esculentus core layer and an outer winding layer, the two ends of the connector are each provided with one metal inner core, and meanwhile the two metal inner cores are connected with the middle cyperus esculentus core layer in an adhesive mode. The outer winding layer is arranged on the surface after the metal inner core and the middle cyperus esculentus core layer are assembled, and the outer winding layer comprises five kinds of CFRP prepreg cloth with different winding angles. The manufacturing method comprises the following steps: assembling the joint inner core; winding CFRP (carbon fiber reinforced plastic) prepreg cloth; curing and forming by a vacuum-assisted process; repeatedly winding prepreg cloth and carrying out high-temperature curing; machining a single lug and a double lug; and punching and processing threads. According to the high-bearing-capacity integrally-formed composite material connector and the manufacturing method, the longitudinal fibers, interlayer bonding force and shearing force are used for bearing tensile force, the shearing force pins and the interlayer bonding force are used for bearing pressure, and the high-bearing-capacity integrally-formed composite material connector is high in connecting efficiency, good in fatigue performance and capable of being used for connecting high-bearing-capacity composite material structures.

Description

technical field [0001] The invention relates to the connection technology of rods or beams in bridge structures, in particular to a high-bearing-capacity integrally formed composite material joint and a manufacturing method. Background technique [0002] Bridge structures such as civil engineering need to quickly overcome obstacles such as rivers, canyons, and ditches, which puts forward higher requirements for civil engineering structures. Bridge structures need to be light in weight, high in bearing capacity, and large in span. [0003] Fiber Reinforced Polymer (FRP) has the advantages of high strength, light weight, corrosion resistance and fatigue resistance. Its strength is about twice that of steel tie rods, and its density is 1 / 5 of that of steel. application prospects. [0004] Traditional composite material connection methods include bolt connection, cementation, and glue-screw hybrid connection, which can basically be applied to the connection of composite materia...

Claims

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Application Information

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IPC IPC(8): E01D19/00E04B1/58
CPCE01D19/00E04B1/58Y02T50/40
Inventor 徐龙星李宁周自文李林熊建武刘建成李欢张颖梅之永程营
Owner 中国人民解放军63983部队
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