Interlayer structure adopting composite material as core and steel plate as cover skin

A composite core and sandwich structure technology, used in ships, bridges, and construction fields, can solve problems such as difficulty in adapting to the use of bridges and ships, insufficient rigidity, and a large number of welds, and achieve reasonable stress, good wear resistance, and reduced The effect of the weld

Active Publication Date: 2014-09-10
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Steel plates or traditional sandwich steel plates are currently commonly used in bridge girders and ships. This steel plate or traditional sandwich steel plates has a large number of welds, e

Method used

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  • Interlayer structure adopting composite material as core and steel plate as cover skin
  • Interlayer structure adopting composite material as core and steel plate as cover skin
  • Interlayer structure adopting composite material as core and steel plate as cover skin

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Such as figure 1 , 2 Shown in and 6: the present invention adopts composite material to be core material, steel plate is the sandwich structure of skin, and it comprises the steel plate skin 1 that upper and lower two-layer thickness is 10mm, and one deck composite material core material 2 in the middle adopts 20cm high separation Type hollow tube 6, the hollow tube 6 is connected with the steel plate skin 1 through the structural glue 3 and the bolt 4, and the multiple interlayer structures are connected through concave-convex joints.

[0022] Taking Example 1 as an example, the preparation process of the sandwich structure using the composite material as the core material and the steel plate as the skin is as follows:

[0023] a, first make the composite material core material 2 (in the embodiment 1, it is the separated hollow tube 6). In the factory, the hollow tube 6-section mold is first made, and then the fiber (carbon fiber, glass fiber, basalt fiber, aramid fi...

Embodiment 2

[0028] Such as image 3 As shown, the difference between this embodiment and embodiment 1 is that the composite core material 2 adopts a separate hollow tube 6 with a height of 20 cm.

Embodiment 3

[0030] Such as Figure 4 with 7 As shown, the present invention adopts composite material as core material, steel plate is the sandwich structure of skin, and it comprises the steel plate skin 1 that upper and lower two-layer thickness is 8mm, and the middle layer composite material core material 2 adopts the high sandwich structure of 22cm 7. The filler 8 in the sandwich structure 7 is made of foam, and multiple sandwich structures are connected by two concave heads, and a square steel pipe 5 is added in the middle.

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Abstract

The invention discloses an interlayer structure adopting a composite material as a core and a steel plate as cover skin. The interlayer structure comprises two upper and lower steel plate cover skin layers and a composite material core layer, wherein steel plate cover skin and the composite material core are adhered through a structural adhesive and are connected through bolts; a plurality of the interlayer structures are connected through convex and concave connectors or are connected through two concave connectors; a square steel tube is additionally arranged between the two concave connectors; the composite material core adopts a pultrusion material or an interlayer structure; the pultrusion material is of a separated mode or an integrated mode that a plurality of pultrusion materials are connected. By adopting the interlayer structure, weld joints are reduced; as the composite material is used as an internal material and is protected by steel plates, the problems of ultraviolet aging and fire and toxic gas prevention are solved, and the surface steel plates are also easy to maintain; the interlayer structure can be applied to the field of ships, is large in rigidity, high in strength, good in wearing resistance and small in stress as the composite material is used as the interlayer material; the interlayer structure can be also used in a steel box beam to take the place of an orthotropic steel plate, is large in rigidity, small in hogging moment area and more reasonable in stress.

Description

technical field [0001] The invention relates to technical fields such as ships, bridges, buildings, etc., and in particular refers to a sandwich structure plate that can replace orthotropic steel plates, specifically a sandwich structure plate that uses composite materials as core materials and steel plates as skins. Background technique [0002] Steel plates or traditional sandwich steel plates are currently commonly used in bridge girders and ships. This steel plate or traditional sandwich steel plates has a large number of welds, easy to rust inside, difficult to maintain, and insufficient rigidity. It is difficult to adapt to bridges and ships in harsh conditions. It can be used in the environment and under the complex stress conditions. Contents of the invention [0003] The object of the present invention is to solve the existing problems in the prior art and provide a sandwich structure with high rigidity, few welds, high strength and easy maintenance, which adopts ...

Claims

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Application Information

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IPC IPC(8): E01D2/00E04C2/292E04C2/34B63B3/14
Inventor 方海刘伟庆王跃庄勇
Owner NANJING UNIV OF TECH
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