CN203807956U - Composite material structural system for bridge widening - Google Patents

Abstract

The utility model discloses a composite material structural system for bridge widening. The structural system is installed on the outside or below the main girder of the bridge. The secondary beam is connected with the main beam through the second connecting piece, the composite material bridge deck is fixed on the composite material secondary beam, and the guardrail is fixed on the outer side of the composite material bridge deck. The utility model is firstly made of composite materials, which has the advantages of good corrosion resistance, etc., which can make up for the advantages of poor corrosion resistance of traditional materials; secondly, the composite material structure itself has the characteristics of light weight and high strength, which makes the new bridge widening system meet the requirements of At the same time, the self-weight of the structure can be reduced to a large extent, thereby reducing the amount of materials used; finally, the composite material structure is light in weight, which can reduce construction costs, and can be constructed without hindering the use of the original bridge.

Description

A composite material structure system for bridge widening

technical field

The utility model relates to a bridge structure system, in particular to a composite material structure system for bridge widening.

Background technique

Due to the great increase in road traffic in recent years, a large number of bridges are difficult to meet the growing traffic requirements, and there are serious problems, such as bridges are too narrow, traffic congestion, and difficult daily maintenance work. In order to give full play to the bearing capacity of the bridge structure and improve its traffic capacity, it is necessary to widen the bridge to a certain extent. Traditional bridge widening systems are mainly composed of reinforced concrete materials or steel structure materials. This system has the disadvantages of heavy weight, poor corrosion resistance, and complicated construction.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a composite material structure system for bridge widening.

The technical scheme adopted by the utility model is: a composite material structural system for bridge widening, which is installed on the outside or below the main girder of the bridge. The composite material secondary beam is connected with the main beam through the second connecting piece, the composite material bridge deck is fixed on the composite material secondary beam, and the guardrail is fixed on the outer side of the composite material bridge deck.

Preferably, the structural system is installed on the outside of the main girder of the bridge, and the main girder is connected to the end side of the main girder of the bridge through the first connecting piece.

Preferably, the structural system is installed under the main girder of the bridge, one end of the main girder is connected with the main girder of the bridge through a first connecting piece, and the other end is connected with the end of the main girder of the bridge through a stay cable, and the stay cable It is connected with the main girder of the bridge and the main girder through the third connecting piece.

Preferably, the main girder is one of a composite material girder or a steel girder. Among them, the composite material beam consists of fiber reinforced composite material profiles, or consists of fiber reinforced composite material shell and lightweight core material. The fibers include carbon fiber, glass fiber, aramid fiber and basalt fiber, etc., and the lightweight core material is polyurethane foam, PVC foam, balsa wood, paulownia wood, southern pine, etc.

Preferably, the composite material secondary beam includes a composite material pultrusion profile or a composite material sandwich beam. Among them, the composite sandwich beam is composed of a fiber-reinforced composite shell and a lightweight core. The fibers include carbon fiber, glass fiber, aramid fiber and basalt fiber, etc., and the lightweight core material is polyurethane foam, PVC foam, balsa wood, paulownia wood, southern pine, etc.

Preferably, the composite material bridge deck comprises a pultruded composite material hollow panel or a composite material sandwich panel. The fibers used include carbon fiber, glass fiber, aramid fiber and basalt fiber, etc. The core materials used include polyurethane foam, PVC foam, balsa wood, paulownia wood, southern pine, etc.

Preferably, the guardrail is one of composite material guardrails, metal guardrails, plastic guardrails and wooden guardrails.

Preferably, the stay cables are one of steel cables, composite material cables or composite material rods.

Preferably, the first connecting piece is composed of a steel sheet or a Z-shaped profile and studs, and the second connecting piece is an ordinary bolt or a high-strength bolt.

Preferably, the third connecting piece is a composite material connecting piece made of composite material, steel material, or aluminum alloy material.

Beneficial effects: the utility model is a composite material structure system for bridge widening. Firstly, compared with reinforced concrete structures and steel structure bridge widening devices, the new structure system is made of composite materials and has the advantages of good corrosion resistance. Make up for the advantages of poor corrosion resistance of traditional materials. Secondly, the composite material structure itself has the characteristics of light weight and high strength, so that the new bridge widening system can greatly reduce the self-weight of the structure while meeting the capacity requirements, thereby reducing the amount of materials used. Finally, the light weight of the composite structure can reduce construction costs while allowing construction without interfering with the original bridge's use. In summary, the new bridge widening composite material structure system can be used as the preferred bridge widening device.

Description of drawings

Fig. 1 is the sectional view of simultaneous application of embodiment 1 and embodiment 2 of the bridge widening structural system of the present invention;

Fig. 2 is the cross-sectional detailed view of embodiment 1 of bridge widening structure of the present invention;

Fig. 3 is the cross-sectional detailed view of Embodiment 2 of the bridge widening structure of the present invention;

Fig. 4 is the side view of Fig. 2;

Fig. 5 is the perspective view of the deck structure of Embodiment 1 of the bridge widening structure of the present invention;

Fig. 6 is the perspective view of the bridge deck structure of embodiment 2 of the bridge widening structure of the present invention

Detailed ways

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

Example 1:

The bridge widening composite material structural system of the present invention is shown in Fig. 2 , Fig. 4 and Fig. 5 . The main girder 1 is an I-shaped pultruded profile, one end is anchored to the main girder 9 of the bridge through the first connecting piece 6, and the other end is connected to the stay cable 5 through the third connecting piece 8; the stay cable 5 is made of steel strands , and anchored on the main beam 9 of the bridge; three composite material secondary beams 2 are laid longitudinally on the main beam 1, and the composite material secondary beams 2 are connected with the main beam 1 through the second connecting piece 7, and the composite material secondary beams 2 are industrial font-shaped pultrusion profile; the pultruded composite bridge deck 3 is laid on the composite material secondary beam 2; Composite guardrail4. This embodiment is suitable for bridge structures constructed of large concrete box girders, and the newly added channel is located on the lower side of the flange of the original box girder, and does not occupy additional space.

Example 2:

The bridge widening composite material structural system of the present invention is shown in Fig. 3 and Fig. 6 . The main girder 1 is a composite material sandwich beam with a rectangular variable cross-section, one end of which is anchored to the main girder 9 of the bridge through the first connector 6 to form a cantilever structure; The beam 2 is connected to the main beam 1 through the second connecting piece 7, and the composite material secondary beam 2 is an I-shaped pultrusion profile; the composite material sandwich panel 3 is laid on the composite material secondary beam 2; the composite material secondary beam 2 and the composite material The bridge decks 3 together form a bridge deck structure system, and composite guardrails 4 are arranged outside the bridge deck structure system. This embodiment is suitable for the situation that the space under the flange of the main girder of the original bridge structure is small, and the construction is convenient.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made. Retouching should also be regarded as the scope of protection of the present utility model.

Claims (8)

1. A bridge widening composite material structural system is characterized in that: the structural system is installed on the outside or below of the bridge girder, and the structural system includes a main girder, a composite material secondary beam, a composite material bridge deck and a guardrail, and the composite material The material secondary beam is connected with the main beam through the second connecting piece, the composite material bridge deck is fixed on the composite material secondary beam, and the guardrail is fixed on the outer side of the composite material bridge deck. the 2. A kind of composite material structure system for bridge widening according to claim 1, characterized in that: the structure system is installed on the outside of the bridge girder, and the end beam of the bridge girder is connected to the end of the bridge girder through the first connector. side connection. the 3. A composite material structural system for bridge widening according to claim 1, characterized in that: the structural system is installed under the main girder of the bridge, and one end of the main girder is connected to the main girder of the bridge through a first connecting piece , and the other end is connected with the underside of the end of the main girder of the bridge through a stay cable, and the stay cable is connected with the main girder of the bridge and the main girder through a third connecting piece. the 4. A composite material structural system for bridge widening according to claim 1, characterized in that: the main beam is one of composite material beams or steel beams. the 5. A composite material structure system for bridge widening according to claim 1, characterized in that: said composite material secondary beams comprise composite material pultruded profiles or composite material sandwich beams. the 6 . The composite material structural system for bridge widening according to claim 1 , wherein the composite bridge deck comprises a pultruded composite material hollow plate or a composite material sandwich plate. 7 . the 7. A composite material structure system for bridge widening according to claim 1, characterized in that: said guardrail is one of composite material guardrail, metal guardrail, plastic guardrail and wooden guardrail. the 8 . The composite material structural system for bridge widening according to claim 3 , wherein the stay cables are one of steel cables, composite material cables or composite material rods. the