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Lattice enhanced type composite material foam core sandwich supporting column and preparation method thereof

A technology of composite materials and reinforcement materials, which is applied in the field preparation of building components, pillars, building structures, etc., and can solve problems such as easy debonding of the skin and the core layer, no lifting of the structure's self-weight, and low shear resistance , to achieve superior surface-core bonding strength, improve overall stability, and high surface-core bonding strength

Pending Publication Date: 2018-03-13
ARMY ENG UNIV OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a lattice-reinforced composite foam sandwich support column and its preparation method. In order to solve the problems of low shear capacity and easy debonding of the skin and the core layer, it provides a lattice-reinforced composite foam sandwich support column that greatly improves the load-bearing efficiency under the premise of hardly increasing the self-weight of the structure, and provides a Low cost, stable performance, and preparation method for large-scale lattice-reinforced composite foam sandwich support column

Method used

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  • Lattice enhanced type composite material foam core sandwich supporting column and preparation method thereof
  • Lattice enhanced type composite material foam core sandwich supporting column and preparation method thereof
  • Lattice enhanced type composite material foam core sandwich supporting column and preparation method thereof

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Embodiment 1

[0030] This embodiment provides a lattice-reinforced composite foam sandwich support column, such as figure 1 As shown, including support column body, support surface connection flange and end wrap reinforcement, such as figure 2 , image 3 As shown, the main body of the support column includes a cylindrical composite material inner skin 1 and a composite material outer skin 4, and a foam slat 2 is arranged between the composite material inner skin 1 and the composite material outer skin 4, and the foam slat 2 The outer side is wrapped with composite material, and the composite material along the wall thickness direction connects the composite material inner skin 1 and the composite material outer skin 4 to form a composite material lattice 3, that is, a composite material lattice is arranged between the foam slats 2 3. Composite material lattices 3 are equally spaced between the foam slats 2, and the composite material inner skin 1 and the composite material outer skin 4 ar...

Embodiment 2

[0037] This embodiment provides a method for preparing a lattice-reinforced composite foam sandwich support column, which includes the following specific steps:

[0038] (1) Preparation of foam slats: According to the design requirements of the component size, the foam slabs are cut into foam slats with a trapezoidal cross section in advance. According to the requirements, 32 isosceles trapezoidal cross-section foam slats 2 are cut, with a length of 2000mm and a thickness of 40mm. Upper bottom 37mm, lower bottom 44mm, spare;

[0039] (2) Fiber cloth wrapping foam slats: Wrap fiber cloth on the outside of foam slats and fix them with fiber filaments; cut the glass fiber plain weave cloth with a thickness of 0.5mm into 2000mm long strips with a width of 330mm, totaling 32 pieces. Then the foam slat 2 that is cut is wrapped up with glass fiber plain weave cloth, and is fixed with fiber silk, and the fiber cloth thickness on every foam slat 2 is 1.5mm at this moment, is dried for ...

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Abstract

The invention discloses a lattice enhanced type composite material foam core sandwich supporting column and a preparation method thereof. A supporting column main body comprises a composite material inner skin and a composite material outer skin which are in cylindrical shapes, foam plate strips are arranged between the composite material inner skin and the composite material outer skin, compositematerial lattices are arranged between the foam plate strips, and the composite material lattices are distributed between the foam plate strips at equal intervals to connect the composite material inner skin with the composite material outer skin together. Supporting face connection flanges for being connected with a top structure or connected with another same supporting column are arranged at the two ends of the supporting column. End enhancing parts are arranged at the two ends of the outer skin of the supporting column. The lattice enhanced type composite material foam core sandwich supporting column can sharply improve the bearing efficiency under the precondition that the self weight of the structure is hardly increased, and meanwhile, the preparation method is low in cost and stable in property, and can prepare the lattice enhanced type composite material foam core sandwich supporting columns with large sizes.

Description

technical field [0001] The invention belongs to the field of new materials, new structures and combined structures, and relates to a support column suitable for rapid erection and emergency repair and a preparation method thereof, in particular to a lattice reinforced composite material foam sandwich support column and a preparation method thereof . Background technique [0002] Emergency columnar support members in the field of civil engineering are often made of metal materials, which have a large dead weight, are inconvenient to carry and operate, and prolong the erection time. In addition, metal materials are easy to corrode, and the maintenance cost is high, which affects the normal use of the structure. and longevity. Therefore, it is imminent to use new materials to develop and design emergency support columns with light weight, high load-bearing capacity, easy handling and erection, and corrosion resistance. [0003] The fiber-reinforced resin-based composite mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G25/00E04G25/02
CPCE04G25/00E04G25/02
Inventor 陶杰李峰邵飞王浩朱锐杰刘建邦赵志波
Owner ARMY ENG UNIV OF PLA
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