Double-layer bridge

Abstract

The double-layer bridge comprises a main bridge body, a lower-layer bridge body is arranged below the main bridge body, the main bridge body and the lower-layer bridge body are connected through suspenders, a support is arranged below the lower-layer bridge body in a supported mode, and a vibration reduction damper is arranged in the main bridge body. The double-layer bridge has the beneficial effects that the double-layer bridge forms a unified whole and is attractive and harmonious; the space between the lower box chambers of the main bridge is fully utilized; the vibration damper in the main bridge box can effectively reduce the mutual influence of the vibration of the upper and lower bridges; the overall structure is simple and construction is convenient.

Description

Technical Field

[0001] This application belongs to the technical field of bridge design and construction, and particularly relates to a double-deck bridge, providing a double-deck bridge form that forms a unified whole, is beautiful and coordinated, rationally and effectively utilizes the bridge structure space, and effectively reduces the influence of vibrations between the upper and lower decks of the bridge on each other. Background Art

[0002] Currently, double-deck bridges generally do not form inter-layer connections, acting independently, being relatively fragmented in form and not forming a unified whole, or only having apparent connections without effectively solving the problem of vibrations between the decks affecting each other. Summary of the Utility Model

[0003] The purpose of this application is to provide a double-deck bridge that can meet the crossing and passing needs of each layer, form a unified whole with mutual connections, be beautiful and coordinated, rationally and effectively utilize the bridge structure space, effectively reduce the influence of vibrations between the upper and lower decks of the bridge on each other, and solve the problem of non-connection or mutual influence of current double-deck bridges.

[0004] The purpose of this application is achieved through the following technical solutions:

[0005] A double-deck bridge includes a main bridge. A lower bridge is provided below the main bridge. The main bridge and the lower bridge are connected by suspension rods. Supports are provided below the lower bridge. Vibration damping devices are provided in the main bridge.

[0006] Further, the main bridge and the lower bridge are arranged in the same direction, and the longitudinal center line of the lower bridge and the longitudinal center line of the main bridge are in the same vertical plane.

[0007] Further, the main bridge is a simply supported bridge.

[0008] Further, the main bridge is a steel box girder bridge, including cross beams and box chambers. The main bridge has transverse and longitudinal slopes. The main bridge serves for motor vehicles, non-motor vehicles and pedestrians to pass, and can also serve for pipelines, ditches, etc. to pass. Similarly, the main bridge can also be other forms of bridges such as arch bridges and cable-stayed bridges.

[0009] Further, the box chamber of the main bridge has a rectangular cross-section. Similarly, the box chamber can also have other shapes of cross-sections such as inverted trapezoids, or can be a hollow cross-section.

[0010] Further, the lower bridge is a steel beam bridge, and the lower bridge has transverse and longitudinal slopes. The lower bridge serves for motor vehicles, non-motor vehicles, pedestrians to pass, and can also serve for pipelines, ditches, etc. to pass. Similarly, the lower bridge can also be other forms of bridges such as arch bridges.

[0011] Further, the lower bridge is located between the chambers of the main bridge and directly below the cross beam of the main bridge. The effective usable width of the lower bridge is less than or equal to the clear distance between the chambers of the main bridge, or it can be slightly greater than the clear distance between the chambers of the main bridge and the chamber width. Similarly, the lower bridge can also be located below the chambers of the main bridge.

[0012] Further, the side of the lower bridge is connected to the suspender, and the end of the lower bridge is supported by a bearing. The suspenders should be symmetrically arranged along the longitudinal center line of the main bridge.

[0013] Further, the cross beam and the chamber of the main bridge are both connected to the suspender, and the suspender is subjected to tensile force. The suspenders on the left and right at the same mileage of the lower bridge should be symmetrically arranged along the longitudinal center line of the main bridge and should be in the same vertical plane of the longitudinal center line of the main bridge. The number of suspenders on one side is one or two. The suspender is made by integral extrusion of steel strands. Similarly, the suspender can also be other types of force-bearing members such as wire bundles.

[0014] Further, the bearing is a plate rubber bearing. Similarly, the bearing can also be other types of bearings.

[0015] Further, the bearing is supported between the bearing pad stone and the steel beam of the lower bridge. Similarly, the bearing can also be installed between the abutment, beam, column, wall, etc. and the steel beam of the lower bridge.

[0016] Further, shock absorption dampers are provided in the chambers of the main bridge to reduce the influence of the vibration of the upper and lower bridges on each other.

[0017] Further, the shock absorption dampers are symmetrically arranged along the longitudinal center line of the main bridge, and the number is three in each chamber. Similarly, the number of shock absorption dampers can also be other numbers in each chamber.

[0018] Further, the shock absorption dampers are located at the bottom of the chamber. Similarly, they can also be installed at other positions in the chamber or outside the chamber.

[0019] Further, the shock absorption damper is a tuned mass damper. Similarly, it can also be other dampers or shock absorbers that can reduce the vibration of the bridge.

[0020] Advantages of this application:

[0021] 1. The double-deck bridge forms a unified whole, which is beautiful and harmonious.

[0022] 2. Make full use of the space between the lower chambers of the main bridge.

[0023] 3. The shock absorption dampers in the chambers of the main bridge can effectively reduce the influence of the vibration of the upper and lower bridges on each other.

[0024] 4. The overall structure is simple and the construction is convenient.

[0025] The main solution of the present application and its various further alternative solutions can be freely combined to form multiple solutions, all of which are solutions that can be adopted and claimed in the present application; and in the present application, (each non-conflicting alternative) alternatives and other alternatives can also be freely combined. Those skilled in the art can understand that there are various combinations according to the prior art and common general knowledge after understanding this solution, all of which are technical solutions to be protected in the present application, and will not be enumerated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a plan view of the present utility model.

[0027] Figure 2 is an elevation view of the present utility model.

[0028] Figure 3 is a cross-sectional view of the present utility model.

[0029] In the figure: 1 is the main bridge, 2 is the cross beam, 3 is the box chamber, 4 is the lower bridge, 5 is the suspension rod, 6 is the bearing, and 7 is the shock absorption damper. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The present application will be further described below in conjunction with specific embodiments and the accompanying drawings.

[0031] Referring to Figures 1 to 3 as shown, a double-deck bridge includes a main bridge 1, a cross beam 2, a box chamber 3, a lower bridge 4, a suspension rod 5, a bearing 6, and a shock absorption damper 7.

[0032] The main bridge 1 is a simply supported bridge. The main bridge 1 includes a cross beam 2 and a box chamber 3. A lower bridge 4 is provided below the main bridge 1. The main bridge 1 and the lower bridge 4 are arranged in the same direction. The main bridge 1 and the lower bridge 4 are connected by a suspension rod 5. A bearing 6 is provided below the lower bridge 4, and a shock absorption damper 7 is provided in the main bridge 1.

[0033] The main bridge 1 is a steel box girder bridge. The main bridge 1 is provided with transverse and longitudinal slopes and is of a box chamber structure. The box chamber 3 of the main bridge 1 has a rectangular cross section, and a shock absorption damper 7 is provided in the box chamber 3 of the main bridge 1 to reduce the influence of the vibration of the upper and lower bridges on each other.

[0034] The lower bridge 4 is a steel beam bridge and is provided with transverse and longitudinal slopes. The lower bridge 4 is located between the box chambers 3 of the main bridge 1 and directly below the cross beam 2 of the main bridge 1.

[0035] The side of the lower bridge 4 is connected to the suspension rod 5, and the end of the lower bridge 4 is provided with a bearing 6. The cross beam 2 and the box chamber 3 of the main bridge 1 are both connected to the suspension rod 5, and the suspension rod 5 is subjected to tensile force.

[0036] The bearing 6 is a plate rubber bearing, and the bearing 6 is provided between the bearing pad stone and the steel beam of the lower bridge 4.

[0037] The vibration damping damper 7 is located at the bottom of the box chamber 3. The vibration damping dampers 7 are symmetrically arranged along the longitudinal center line of the main bridge. The vibration damping damper 7 is a tuned mass damper.

[0038] The main bridge deck and the lower bridge deck are provided with structural layers according to the traffic design requirements. The main bridge and the lower bridge are provided with transverse and longitudinal slopes for convenient drainage, reducing the adverse effects of water on the bridge deck structure, and extending the service life of the bridge deck structure. The lower bridge is located directly below the cross beam between the box chambers of the main bridge, effectively utilizing the structural space between the box chambers, which can reduce the clearance height from the lower bridge deck to the bottom of the box chamber and the height from the lower bridge deck to the main bridge deck. Safety protection facilities are installed on both the main bridge and the lower bridge. The length of the suspender of the lower bridge is fabricated according to the actual length after the bridge is completed. The suspenders connect the main bridge and the lower bridge to form a unified whole, which is beautiful and coordinated.

[0039] After the construction of the main bridge, the lower bridge, the suspenders, etc. is completed and the main bridge is put into trial operation, the vibration frequency of the double-deck bridge is measured on site. Then, a vibration damping damper (tuned mass damper) is produced according to the measured frequency. Then, the vibration damping damper is installed in the box chamber of the main bridge, and its frequency is finely adjusted to meet the requirement of reducing the overall vibration.

[0040] The foregoing basic example of the present application and its various further alternative examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed in the present application. In the solution of the present application, each alternative example can be arbitrarily combined with any other basic example and alternative example.

[0041] The above are only the preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A double-deck bridge, comprising a main bridge (1), characterized in that: A lower bridge (4) is provided below the main bridge (1). The main bridge (1) and the lower bridge (4) are connected by suspension rods (5). A bearing (6) is provided under the lower bridge (4). A vibration damping damper (7) is provided in the main bridge (1). The lower bridge (4) is located between the box chambers (3) of the main bridge (1) and directly below the cross beam (2) of the main bridge (1). A vibration damping damper (7) is provided in the box chamber (3) of the main bridge (1). The vibration damping damper (7) is symmetrically arranged along the longitudinal center line of the main bridge. The vibration damping damper (7) is located at the bottom of the box chamber (3). The vibration damping damper (7) is a tuned mass damper.

2. The double-deck bridge according to claim 1, characterized in that: The main bridge (1) and the lower bridge (4) are arranged in the same direction. The main bridge (1) is a simply supported bridge.

3. The double-deck bridge according to claim 1 or 2, characterized in that: The main bridge (1) is a steel box girder bridge with transverse and longitudinal slopes; or the main bridge (1) is an arch bridge or a cable-stayed bridge. The lower bridge (4) is a steel beam bridge with transverse and longitudinal slopes; or the lower bridge (4) is an arch bridge.

4. The double-deck bridge according to claim 1, characterized in that: The box chamber (3) of the main bridge (1) has a rectangular cross-section; or the box chamber (3) has an inverted trapezoidal cross-section or a hollow cross-section.

5. The double-deck bridge according to claim 1, wherein: The side of the lower bridge (4) is connected to the suspension rod (5), and the end of the lower bridge (4) is provided with a bearing (6). The suspension rods (5) are symmetrically arranged along the longitudinal center line of the main bridge.

6. The double-deck bridge according to claim 1 or 5, characterized in that: The cross beam (2) and the box chamber (3) of the main bridge (1) are both connected to the suspension rod (5).

7. The double-deck bridge according to claim 1, wherein: The bearing (6) is a plate rubber bearing. The bearing (6) is provided between the bearing pad stone and the steel beam of the lower bridge (4).

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