CN218233160U

CN218233160U - New and old prefabricated little box girder bridge floor mosaic structure

Info

Publication number: CN218233160U
Application number: CN202221338281.8U
Authority: CN
Inventors: 张志威; 徐凯; 李振; 王磊; 吴朝宪; 熊杰
Original assignee: China National Chemical Engineering No16 Construction Co ltd
Current assignee: China National Chemical Engineering No16 Construction Co ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2023-01-06
Anticipated expiration: 2032-05-31

Abstract

The utility model discloses a splicing structure of new and old prefabricated small box girder bridge floors, which comprises a filling structure and a paving structure; the filling structure is filled in the broken joint between the new bridge deck and the old bridge deck; the pavement structure comprises a pavement area formed by cutting the upper surface of the broken joint, and a multilayer pavement structure is paved in the pavement area. The structure solves the problem that cracks exist between bridge floors when new and old prefabricated small box girder bridges are spliced in the prior art, and has the characteristics of simple structure, convenience in construction and capability of effectively eliminating cracks between bridge floors.

Description

New and old prefabricated little box girder bridge floor mosaic structure

Technical Field

The utility model belongs to the technical field of the bridge construction, in particular to new and old prefabricated little case roof beam bridge floor mosaic structure.

Background

With the development of social economy, the traffic industry of China is greatly developed, and while the overall construction of road engineering is carried out, some highway bridges constructed in the early stage need to be transformed and upgraded, otherwise, the old highway bridges cannot meet the new-period requirements of the current traffic development, so the engineering of transforming and expanding the original bridges is increased. In order to continue to exert the value of an old bridge in the existing bridge reconstruction and extension project and avoid excessively increasing the cost of construction cost, a construction method of connecting a new bridge deck and an old bridge deck into a whole is adopted for construction; in the actual construction process, the gap between a new bridge and an old bridge needs to be controlled to be about 2cm in an ideal state, but due to the influence caused by construction errors, the change of the concrete state and the like, the gap is often not in a regular equal-width state, the narrow part can be smaller than 2cm, the wide part can reach 8cm, the large and uneven gap can influence the impression and can cause certain risks, and therefore a new and old prefabricated small box girder bridge deck splicing structure needs to be designed to solve the problems.

Disclosure of Invention

The utility model aims to solve the technical problem that a prefabricated little case roof beam bridge floor mosaic structure of new and old is provided, and this structure has solved the prefabricated little case roof beam bridge of new and old of prior art when the concatenation, has had fissured problem between the bridge floor, has simple structure, and construction convenience can effectively eliminate fissured characteristics between the bridge floor.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the new and old prefabricated small box girder bridge deck splicing structure comprises a filling structure and a paving structure; the filling structure is filled in the broken joint between the new bridge deck and the old bridge deck; the paving structure comprises a paving area dug on the upper surface of the broken joint, and a multilayer paving structure is paved in the paving area.

Preferably, the filling structure comprises foam boards, and the foam boards are filled in the cracks between the old bridge deck and the new bridge deck.

Preferably, the pavement area comprises a new bridge and old bridge deck concrete with certain width on two sides of the upper surface of the broken seam.

Preferably, the paving structure comprises a first asphalt layer, which is coated in the paving area.

Preferably, the paving structure comprises a second asphalt layer coated on the upper surface of the first asphalt layer.

Preferably, the paving structure comprises a plastic film, and the plastic film is covered on the upper surface of the second asphalt layer.

Preferably, the paving structure comprises a steel bar net rack, and the bound steel bar net rack covers the upper surface of the plastic film.

Preferably, the pavement structure comprises a bridge deck pavement layer, and the bridge deck pavement layer is a concrete structure poured on the steel bar net rack.

The beneficial effects of the utility model are that:

the structure is suspended on the bridge floor, is not rigidly connected with the bridge main body, does not need complex construction processes such as chiseling, drilling, bar planting and the like on the side surfaces of the box girder flange plates of the new bridge and the old bridge, simplifies construction, ensures the service performance of the box girder flange plates of the new bridge and the old bridge, saves energy, reduces consumption, and effectively eliminates cracks when the new bridge and the old bridge are spliced.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic top view of a bridge deck to be constructed according to the present invention;

the reference numbers in the figures are: the concrete comprises a broken seam 1, a foam board 2, a first asphalt layer 3, a second asphalt layer 4, a plastic film 5, a steel bar net rack 6, a bridge deck pavement layer 7 and a box girder 8.

Detailed Description

As shown in fig. 1-2, the new and old prefabricated small box girder 8 bridge deck splicing structure comprises a filling structure and a paving structure; the filling structure is filled in the broken joint 1 between the new bridge deck and the old bridge deck; the pavement structure comprises a pavement area dug on the upper surface of the broken joint 1, and a multilayer pavement structure is paved in the pavement area.

Preferably, the filling structure comprises foam boards 2, and the foam boards 2 are filled in the broken joints 1 between the new bridge deck and the old bridge deck.

Preferably, the pavement area comprises the concrete of the bridge deck of the new bridge and the old bridge with a certain width on two sides of the upper surface of the broken joint 1.

Preferably, the pavement structure comprises a first asphalt layer 3, the first asphalt layer 3 being applied in the pavement area.

Preferably, the paving structure comprises a second asphalt layer 4, and the second asphalt layer 4 is coated on the upper surface of the first asphalt layer 3.

Preferably, the paving structure comprises a plastic film 5, and the plastic film 5 is covered on the upper surface of the second asphalt layer 4.

Preferably, the pavement structure comprises a reinforcing steel bar net rack 6, and the bound reinforcing steel bar net rack 6 covers the upper surface of the plastic film 5.

Preferably, the pavement structure comprises a bridge pavement layer 7, and the bridge pavement layer 7 is a concrete structure poured on the steel bar net rack 6.

The working principle of the new and old prefabricated small box girder 8 bridge deck splicing structure is as follows:

during construction, the bridge floors on the two sides of the broken joint 1 are processed in advance, a pavement area is set, then pavement structures are sequentially paved, and finally the pouring of the bridge deck pavement layer 7 is completed.

The above embodiments are only preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the embodiments and features in the embodiments in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. I.e., equivalent alterations and modifications within the scope of the invention, are also intended to be covered by the scope of this invention.

Claims

1. New old prefabricated little box girder bridge floor mosaic structure, its characterized in that: the method comprises a filling structure and a paving structure; the filling structure is filled in the broken joint (1) between the new bridge deck and the old bridge deck; the pavement structure comprises a pavement area formed by cutting the upper surface of the broken joint (1), and a multilayer pavement structure is paved in the pavement area; the structure of mating formation includes first pitch layer (3), second pitch layer (4), plastic film (5), reinforcing bar net rack (6) and bridge deck pavement layer (7), the coating of first pitch layer (3) is in the region of mating formation, the coating of second pitch layer (4) is at first pitch layer (3) upper surface, plastic film (5) cover at second pitch layer (4) upper surface, the reinforcing bar net rack (6) of ligature covers at plastic film (5) upper surface, bridge deck pavement layer (7) are for pouring the concrete structure in reinforcing bar net rack (6).

2. The new and old prefabricated small box girder bridge deck splicing structure of claim 1, wherein: the filling structure comprises foam boards (2), and the foam boards (2) are filled in the broken joints (1) between the new bridge deck and the old bridge deck.

3. The new and old prefabricated small box girder bridge deck splicing structure of claim 1, wherein: the pavement area comprises new bridges and old bridge deck concrete with certain width on two sides of the upper surface of the broken joint (1).