CN201254685Y - A composite bridge deck - Google Patents

Abstract

The utility model relates to a lightweight, high-strength, corrosion-resistant composite bridge deck, which can be used as a stressed plate in bridges and structures. The characteristics of the new bridge deck are: light weight, high strength, high rigidity, corrosion resistance, anti-stripping, convenient transportation, rapid construction, and industrial production. It is characterized in that the bridge deck made of composite material is composed of wood or foam solid core material (1) and its upper and lower sides of resin-based fiber panels (2), and resin webs (3) or resin webs (3) can also be formed on the core material (1). Composite material web (4) and other reinforcing forms improve the compressive and shearing resistance of the core material (1). The concrete layer (5) can also be poured through the shear key (6) above it to form a bridge deck composed of composite material-concrete. It can be used in the rapid construction of permanent bridge deck projects, and can also be used in engineering fields such as temporary disaster relief and rescue, military rush construction, etc.

Description

A composite bridge deck

technical field

The utility model relates to a lightweight, high-strength, corrosion-resistant composite bridge deck, which can be used as a stressed plate in bridges and structures, and belongs to the field of composite structures.

Background technique

The traditional bridge deck structure mostly adopts the form of reinforced concrete structure, which has a large self-weight, complex construction, long period, and poor corrosion resistance. In addition, in the long-term load environment or when earthquake disasters occur, the concrete structure bridge deck is prone to cracks or damage, causing potential safety hazards. In view of the above shortcomings, bridge decks of composite materials can be used. At present, the latest composite bridge decks at home and abroad are mostly pultruded FRP hollow bridge decks. However, it is difficult to form a large bridge deck structure at one time by the pultrusion process. Gluing, winding and other processes, such as: patents CN201047062Y, CN200946244Y. The utility model proposes a composite material bridge deck adopting a sandwich structure, in which solid core materials such as wood or foam are used in the middle, and the upper and lower panels are fiber-reinforced composite materials, which can be formed at one time by adopting a vacuum introduction process; the utility model can also be A concrete layer is set above the deck to form a composite material-concrete bridge deck, which can improve driving comfort, and can be used for rapid construction of permanent bridge deck projects, and can also be used in engineering fields such as temporary disaster relief and military construction.

Contents of the invention

The purpose of this utility model is to provide a novel composite material bridge deck urgently needed for civil and national defense against the above-mentioned deficiencies in the prior art.

The purpose of this utility model can be achieved through the following measures:

A bridge deck made of composite material, which includes a core material 1, the two sides of the core material 1 are provided with panels 2 made of fiber cloth layers and resin cured, and the core material 1 is arranged in a regular arrangement with the panels 2 at 45°-90° The resin web 3 or the composite material web 4 formed by curing fiber cloth and resin.

The core material 1 is made of Balsa wood, paulownia wood, fir, oak, plywood, polyurethane foam, polyvinyl chloride foam or carbon foam.

The fiber cloth layer used in the panel 2 is: uniaxial, biaxial or multiaxial carbon fiber, glass fiber, basalt fiber, aramid fiber or hybrid fiber cloth; the resin used in the panel 2 is: unsaturated polyester ester, vinyl, epoxy or phenolic resins.

The face plate 2 is provided with a concrete layer 5, and the concrete layer 5 is integrated with the face plate 2 through the shear key 6, or poured on the face plate 2 to form a composite material-concrete bridge deck system.

The shear key 6 is a nail, a sheet or a Z-shaped profile.

The above-mentioned composite material bridge deck can be prepared by hand lay-up process, vacuum bag forming process and vacuum introduction forming process.

The utility model has the following advantages:

Compared with other products, the composite bridge deck provided by the utility model has the biggest features of light weight, high strength, high rigidity, moisture resistance, corrosion resistance, peeling resistance, convenient transportation, simple and fast assembly and construction, and can be used for national defense and Construction and repair of emergency roads in civil engineering. At the same time, the composite bridge deck can be produced industrially, and bridge decks of different specifications can be produced according to traffic requirements.

Description of drawings

Figure 1 is one of the structural schematic diagrams of composite bridge decks.

Figure 2 is the second schematic diagram of the composite bridge deck structure.

Fig. 3 is the third schematic diagram of the composite bridge deck structure.

Figure 4 is a schematic diagram of the structure of a composite bridge deck with a concrete layer added.

In the accompanying drawings: 1 is the core material, including: balsa wood (Balsa wood, paulownia wood, fir, oak, plywood, etc.) and foam (polyurethane, polyvinyl chloride, carbon foam, etc.); 3 is resin web; 4 is composite material web; 5 is concrete layer; 6 is shear key.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described further:

Example 1

The composite material bridge deck of the utility model comprises a core material 1 made of paulownia wood, and panels 2 are laid on both sides of the core material 1, and the panels 2 are formed by curing two layers of biaxial glass fiber cloth and vinyl resin , prepared by hand lay-up process, the grain direction of the Paulownia wood core material 1 is perpendicular to the panel 2 .

Example 2

The composite material bridge deck of the utility model comprises a core material 1 made of polyurethane foam, and resin webs 3 are regularly arranged along the thickness direction of the core material 1, and the resin webs 3 are perpendicular to the face plate 2, on both sides of the core material 1 Both are laid with a panel 2, and the panel 2 is formed by curing four layers of four-axis basalt fiber cloth and epoxy resin, and is prepared by a vacuum introduction molding process.

Example 3

The composite material bridge deck of the present utility model comprises a core material 1 made of PVC foam, a composite material web 4 is regularly arranged along the thickness direction of the core material 1, and the composite material web 4 is arranged at an angle of 45° to the panel 2. Both sides of the material 1 are laid with a panel 2, and the panel 2 is formed by curing three layers of biaxial carbon fiber cloth and epoxy resin, and is prepared by a vacuum introduction molding process. Before implementing the vacuum introduction process, the Z-shaped aluminum alloy shear key 6 is pre-embedded on the panel 2. After molding and the resin is cured, the shear key 6 is integrated with the panel 2, and the panel 2 is provided with the shear key 6. Concrete is poured on one side to form a concrete layer 5, and the concrete layer 5 cooperates with the composite material sandwich structure to receive force through the shear key 6.

There are various preparation methods for the above-mentioned composite bridge deck, which can be prepared by hand lay-up process, vacuum bag forming process, and vacuum introduction forming process. Take the vacuum introduction forming process as an example:

a. On the upper and lower surfaces of the core material 1 of light wood (including: Balsa wood, paulownia wood, fir, oak, plywood, etc.) and foam (including: polyurethane, polyvinyl chloride, carbon foam, etc.) Form the flow channel of the resin in the vacuum introduction process;

b. Cut along the thickness direction of the core material 1 of balsa wood (including: Balsa wood, paulownia wood, fir, oak, plywood, etc.) or foam (including: polyurethane, polyvinyl chloride, carbon foam, etc.), the cut position, The size and quantity can be arranged arbitrarily according to the force requirements. In the thickness direction of the core material 1, the cut shape can be vertical or inclined;

c. The processed core material 1 can be processed into a certain size according to the driving requirements and bridge conditions;

d. Lay one or more layers of fiber cloth (including: uniaxial, biaxial or multiaxial carbon fiber, glass fiber, aramid fiber and hybrid fiber cloth, etc.) on the upper and lower surfaces of the core material 1;

e. Pour the resin (including: unsaturated polyester, vinyl resin, epoxy resin, phenolic resin, etc.) , taking out the components to form a composite bridge deck;

f. In the step d, the shear force key 6 can also be preset on the upper fiber cloth of the laid panel 2 (including: nails, sheets or Z-shaped profiles, and its materials include: composite materials, aluminum alloys, steel, etc.) , after the vacuum introduction process is adopted, the shear key 6 is integrated with the panel 2;

g. Concrete is poured on the top of the panel 2, and after the concrete is set and hardened, the concrete layer 5 is integrated with the composite sandwich panel through the shear bond 6.

At this point, a composite-concrete composite bridge deck can be obtained. Among them: the type and number of layers of the panel 2, the type and thickness of the core material 1, the type of resin, the arrangement and size of the resin web 3, the thickness of the concrete layer 5, and the material and arrangement of the shear key 6 can be determined according to the needs. Flexible adjustment.

Claims (5)

1, a kind of composite material bridge deck, it comprises core (1), the two sides that it is characterized in that described core (1) are provided with panel (2), resin web (3) or composite material web (4) are set in core (1), and resin web (3) or composite material web (4) are 45 °-90 ° with the angle of panel (2).

2, composite material bridge deck according to claim 1 is characterized in that described core (1) material is Balsa wood, paulownia wood, China fir, oak, veneer, polyurethane foam, polyvinyl chloride foam or carbon foam.

3, composite material bridge deck according to claim 1 is characterized in that the fiber layer of cloth that described panel (2) adopts is: single shaft to, twin shaft to or multiaxis to carbon fiber, glass fiber, basalt fibre, aramid fiber or hybridization cloth; The resin that panel (2) adopts is: unsaturated polyester (UP), vinylite, epoxy resin or phenolic resins.

4, according to claim 1 or 3 described composite material bridge decks, it is characterized in that described panel (2) is provided with layer of concrete (5), layer of concrete (5) is combined as a whole by shear connector (6) and panel (2), perhaps build in panel (2) top, form the combined bridge deck system of composite material-concrete.

5, composite material bridge deck according to claim 4 is characterized in that described shear connector (6) is nail, sheet material or Z-shaped section bar.

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