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Joint for large triangular-section composite circular pipe truss

A composite material, triangular technology, applied in the field of truss structure, can solve the problems of complex configuration, difficult assembly and integration, difficult production, etc., and achieve the effects of simple production, avoiding space interference, and light weight

Active Publication Date: 2020-05-15
SHANGHAI JIAO TONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to develop a node for a large triangular cross-section composite material circular tube truss, to solve the complex configuration, difficult manufacture, and difficult assembly and integration existing in the prior art. The problem

Method used

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  • Joint for large triangular-section composite circular pipe truss
  • Joint for large triangular-section composite circular pipe truss
  • Joint for large triangular-section composite circular pipe truss

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 with figure 2 As shown, the double K-shaped joint includes one main pipe 1, four limb pipes 2, one double-fin plate joint assembly 3 and 16 L-shaped corners 5. The double-fin plate joint assembly 3 includes a cylindrical arc-shaped tile shell 8 and two V-shaped fin plates 9 . Wherein, the main pipe 1 and the limb pipe 2 are thin-walled circular pipes, the diameter of the main pipe 1 is much larger than that of the limb pipe 2, the wall thickness of the main pipe 1 is greater than that of the limb pipe 2, and the diameters of the four limb pipes 2 can be different. The main pipe 1 and the limb pipe 2 are made of high-performance CFRP unidirectional prepreg material and are designed according to the stress situation. The diameter and wall thickness of the main pipe 1 and the limb pipe 2 are designed according to the stress situation. The included angles of the two V-shaped fin plates 9 are consistent with the included angles of the limb tubes 2 . The ...

Embodiment 2

[0035] Such as Figure 5 As shown, the single K-shaped joint includes 1 main pipe 1, 2 limb pipes 2, 1 single-fin plate joint assembly 4, and 8 L-shaped paste angles 5.

[0036] Such as Image 6 As shown, the single-fin plate joint assembly includes a cylindrical arc-shaped tile shell 8 and a V-shaped fin plate 9 . The positioning angle of the V-shaped fin plate 9 is consistent with the cut surface of the limb tube 2 , and the geometric dimensions of the V-shaped fin plate 9 are determined according to the geometric dimensions of the limb tube 2 .

Embodiment 3

[0038] Such as Figure 7 As shown, three parallel main pipes 1 form a truss chord with a triangular cross-section, and several limb pipes 2 form a modular truss.

[0039] The size, material selection, and process design of truss nodes with triangular cross-sections can be determined by specific applications. The main pipe 1, the limb pipe 2, the double-fin plate joint assembly 3, the single-fin plate joint assembly 4 and the L-shaped corner 5 can be made of high-performance carbon fiber and structural epoxy resin.

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Abstract

The invention discloses a joint for a large triangular-section composite circular pipe truss, and relates to the technical field of truss structures. The joint is characterized in that the joint comprises a main pipe, limb pipes, a joint combination and L-shaped attached corners, wherein the joint combination comprises a cylindrical surface arc-shaped tile shell and wing plates, the cylindrical surface arc-shaped tile shell is rigidly connected with the wing plates, the main pipe is rigidly connected with the cylindrical surface arc-shaped tile shell, the limb pipes are rigidly connected withthe wing plates, and the L-shaped attached corners are rigidly connected with the limb pipes and the wing plates. The joint has the advantages of low weight, simple manufacturing, large bearing capacity, high reliability, no assembly integration interference and the like.

Description

technical field [0001] The invention relates to the technical field of truss structures, in particular to a node used for a large triangular cross-section composite material circular tube truss. Background technique [0002] The triangular section is the most basic and efficient structural form in the truss structure. The truss can be made of different materials. Therefore, the truss with a triangular section is widely used in various large-scale engineering structures, such as roofs and bridges. Composite circular tube trusses with triangular cross-section have the characteristics of light weight and high rigidity, and can be widely used in aerospace fields, such as large satellite platforms, space station platforms, orbital probes, modern airships, high-altitude solar drones, etc. Among them, the truss joints are subjected to complex forces, and the requirements for design, manufacture and assembly integration are high, so the truss joints are the key to the design of larg...

Claims

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Application Information

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IPC IPC(8): E04B1/24E04B1/58
CPCE04B1/2403E04B1/5837E04B2001/2406E04B2001/2427E04B2001/2451
Inventor 陈务军李世平徐建东杨钧
Owner SHANGHAI JIAO TONG UNIV
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