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Fibre reinforced plastic and concrete composite arc structure and construction method

A fiber-reinforced plastic and concrete arch technology, which is applied in the field of building components and construction, can solve the problems of weakening the overall rigidity of the structure, aggravating the corrosion of steel bars, and reducing the durability of the structure, so as to prevent moisture from entering the interior of the concrete, excellent corrosion resistance, and excellent Closed effect

Inactive Publication Date: 2005-04-27
杨庆国 +3
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Problems solved by technology

[0017] In this way, when the load increases, the reinforced concrete arch structure still cracks, and the development of cracks and cracks will still weaken the overall rigidity of the structure, increase the deformation of the structure, deteriorate the dynamic performance, and reduce the safety of the structure, but at this time the degree is weakened
On the other hand, the use of steel bars must have corrosion problems, and the existence of cracks will aggravate the corrosion of steel bars, reducing the durability of the structure.

Method used

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  • Fibre reinforced plastic and concrete composite arc structure and construction method
  • Fibre reinforced plastic and concrete composite arc structure and construction method

Examples

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Embodiment Construction

[0041] Such as figure 1 , figure 2 As shown, the outer wall of the concrete arch 2 is pasted with a fiber-reinforced plastic layer 1 .

[0042] Example of construction method: the concrete arch 2 is formed by bracket construction. When the strength of the concrete reaches 86% of the design strength, the surface laitance of the concrete arch 2 is wiped off with an electric grinding wheel to form a certain roughness, and the corners of the section are rounded. Smooth the holes on the concrete surface with epoxy putty, and brush the underlying structural adhesive on the concrete surface. The underlying structural adhesive is made of epoxy resin and epoxy curing agent at a weight ratio of 100:32, and the thickness of the underlying structural adhesive is 0.4mm After 50 minutes of brushing the underlying structural adhesive, wrap the glass fiber layered cloth on the surface of the underlying structural adhesive smoothly, and then manually brush the resin on the glass fiber layere...

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Abstract

The present invention relates to building member and its construction process and is especially composite arched structure of fiber reinforced plastic and concrete. The present invention proposes one kind of arced structure with laminated fiber reinforced plastic adhered to the surface of concrete and its construction process. The construction process includes forming concrete arch, milling surface with grinding wheel to eliminate floated surface mortar and roughen the surface, smearing epoxy resin-cement putty to flat the surface, painting primer with structural glue, coating with fiber fabric, soaking the fiber fabric with resin adhesive, covering with polyester film, extruding with scraper the excessive resin adhesive, curing and taking down the polyester film. The composite arched structure is corrosion resistant and durable, and has doubled bearing capacity and simple construction.

Description

1. Technical field [0001] The invention relates to a building component and a construction method, in particular to a composite arch structure and construction method of fiber-reinforced plastics and concrete. 2. Background technology [0002] 1. Fiber-reinforced plastic materials and their molding methods [0003] The English name of fiber reinforced plastics is "Fiber Reinforced Plastics". Since its English abbreviation is FRP, it is also often called FRP material. It itself is a new type of composite material composed of high-performance fibers and substrates. [0004] The fiber is generally a continuous fiber with a diameter of 5-20 μm, which is made by a special drawing process. The use of fiber materials is due to the fact that the physical and mechanical properties of large-scale materials will be significantly improved after being made into fibers. For example, the tensile strength of ordinary glass is only 40~100Mpa, but the strength can reach 2000Mpa after being d...

Claims

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Application Information

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IPC IPC(8): E04B1/32E04C5/07
Inventor 杨庆国易志坚马银华何小兵
Owner 杨庆国
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