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Concrete simply-supported beam based on carbon fiber grid composite boards and manufacturing method

A composite plate and manufacturing method technology, applied in the direction of joists, girders, trusses, etc., can solve the problems of insufficient bearing capacity of carbon fiber materials, peeling damage, poor fire resistance and high temperature resistance, etc., to improve construction efficiency, The effect of preventing peeling damage and improving fire resistance and high temperature resistance

Inactive Publication Date: 2017-05-31
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are certain problems when using carbon fiber reinforced composite materials to strengthen concrete structures. On the one hand, this material needs to be bonded to the surface of the structure through organic glue, so the fire resistance and high temperature resistance are relatively poor; on the other hand, the use of carbon fiber reinforced composite materials The material layer is prone to peeling and damage, and the bearing capacity of carbon fiber materials cannot be fully utilized

Method used

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  • Concrete simply-supported beam based on carbon fiber grid composite boards and manufacturing method
  • Concrete simply-supported beam based on carbon fiber grid composite boards and manufacturing method
  • Concrete simply-supported beam based on carbon fiber grid composite boards and manufacturing method

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Embodiment Construction

[0023] The technical scheme of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] 1. Place the mold accurately;

[0025] 2. Place the multi-layer carbon fiber grid cloth on the mold, and put a positioning strip of specific thickness between the bottom grid cloth and the bottom of the board, between each layer of grid cloth, and the top grid cloth;

[0026] 3. Prestress the carbon fiber mesh cloth through the tension device;

[0027] 4. Insert shear-resistant chopped steel carbon fiber into the pores of each layer of carbon fiber mesh cloth;

[0028] 5. Prepare the steel carbon fiber reinforced cement matrix and pour it on the top layer of carbon fiber mesh cloth, fully vibrate it to penetrate into the bottom of the board and the pores of each layer of carbon fiber cloth;

[0029] 6. Smooth the cement-based mortar on the top of the board to make the thickness consistent with the positioning bar on the top of the board;

...

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Abstract

The invention discloses a concrete simply-supported beam based on carbon fiber grid composite boards and a manufacturing method and belongs to the technical field of building structure engineering. The concrete simply-supported beam comprises a side board, a bottom board, an end board, a U-shaped steel hoop and concrete. The side board and the bottom board are the carbon fiber grid composite boards. The bottom board is a common cement board. The side board and the bottom board are connected through the U-shaped steel hoop. The end board is located at the end in a groove-shaped structure composed of the side board and the bottom board. The side board is clamped at the end through a G-shaped clamp. Shear-resistant connection parts are embedded in the side board and the bottom board so as to enhance the adhesive force of the concrete and the carbon fiber grid composite boards. Concrete is poured in the space formed by the side board, the bottom board and the end board in a surrounded mode and is subjected to curing, and a simply-supported flexural member is formed. The concrete simply-supported beam has the advantages of being free of template, small in dead weight, good in durability, high in integrality and simple to construct.

Description

Technical field [0001] The invention relates to a simply supported beam in a building structure and a manufacturing method thereof, in particular to a concrete simply supported beam based on a carbon fiber grid composite board and a manufacturing method. Background technique [0002] Reinforced concrete structure is a widely used structure in contemporary construction, bridges, water conservancy and other projects, but this kind of structure has durability problems during use. As carbon dioxide in the air carbonizes the concrete, the protective effect of the concrete on its internal steel is gradually lost. When the concrete around the steel is completely carbonized, the steel will gradually rust and expand, further causing degradation of the mechanical properties of the steel, damage to the performance of the concrete section, and The bond performance between the steel bar and the concrete is reduced and other consequences, thereby reducing the bearing capacity of the components...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C3/29
CPCE04C3/29
Inventor 杜运兴雷晋东周芬
Owner HUNAN UNIV
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