A bridge floor connection structure of a suspension bridge

Abstract

The utility model relates to a bridge deck connecting structure of suspension type bridge, include: first bridge deck main part, the first bridge deck main part adopts suspension structure, one end of first bridge deck main part is fixedly connected with first connecting piece, and the other end is fixedly connected with second connecting piece, and the first connecting piece and second connecting piece all are equipped with horizontal movable slot hole, and the first connecting piece and second connecting piece of two adjacent first bridge deck main bodies are connected through the pin, and the pin is arranged in the horizontal movable slot hole, first bridge deck main part is steel box girder, the first connecting piece and second connecting piece of the utility model can connect adjacent first bridge deck main body to improve the span of sidewalk, and the first connecting piece and second connecting piece are connected in the horizontal movable slot hole through the pin, can only do the horizontal direction's adjustment movement along the horizontal movable slot hole, and in longitudinal limit, can prevent the longitudinal drift of suspension type bridge.

Description

Technical Field

[0001] This utility model relates to the field of bridge technology, and in particular to a bridge deck connection structure for a suspension bridge. Background Technology

[0002] Currently, most double-deck bridges in China adopt a steel truss main girder structure or support the bridge on pier tie beams. However, both of these arrangements have certain limitations: 1. Steel truss main beam: When used in pedestrian bridges, its structural characteristics result in poor permeability, and it is limited by the alignment and clearance conditions, so it is usually only suitable for bridges with straight horizontal alignment.

[0003] 2. Bridges supported by pier tie beams at the bottom: This type does not consider the participation of hangers in the load-bearing process. Not only are the clearance and span restricted, but they can also only be arranged between the two pier supports, and the alignment is also constrained. It is generally only suitable for pedestrian bridges with small spans.

[0004] Neither of these two layout methods can meet the requirements when the bridge plan is curved and the lower suspension span is large. Summary of the Invention

[0005] The purpose of this invention is to provide a bridge deck connection structure for suspension bridges to solve the structural stability problems under curved alignment constraints and long suspension spans.

[0006] To achieve the above objectives, this utility model discloses a bridge deck connection structure for a suspended bridge, comprising: a first bridge deck body, the first bridge deck body adopting a suspended structure; a first connector is fixedly connected to one end of the first bridge deck body, and a second connector is fixedly connected to the other end; both the first connector and the second connector are provided with horizontal movable slots; the first connector and the second connector of two adjacent first bridge deck bodies are connected by pins, the pins being inserted into the horizontal movable slots; the first bridge deck body is a steel box girder. Preferably, it also includes a second bridge deck body, which adopts a pier support structure or a suspension structure, and at least one end of the second bridge deck body is fixedly connected to a first connector or a second connector, and the first bridge deck body and the second bridge deck body are connected by the first connector and the second connector; the second bridge deck body is a concrete box girder or a steel box girder.

[0007] Preferably, the first connector includes a first ear plate, and the second connector includes at least one second ear plate, the second ear plate being welded to the first bridge deck body; the horizontal movable slot is formed on the first ear plate and the second ear plate.

[0008] Preferably, the second connector further includes a plurality of second stiffening plates, which are disposed on at least one side of the second ear plate and are welded to the second ear plate and the first bridge deck body, respectively.

[0009] Preferably, when the first connector is installed on the second bridge deck body, the first connector further includes an embedded part and a transition plate. One side of the transition plate is fixedly connected to the end of the embedded part, and the other side of the transition plate is fixedly connected to the first ear plate. The second bridge deck body is a concrete box girder, and the embedded part is embedded inside the second bridge deck body.

[0010] Preferably, the transition plate is pre-embedded at the end of the second bridge deck main body.

[0011] Preferably, the embedded part is composed of several steel bars, which are evenly distributed on the side of the transition plate.

[0012] Preferably, the transition plate has several through holes, one end of the reinforcing bar passes through the through holes and is welded to the transition plate.

[0013] Preferably, the first connector further includes a plurality of first stiffening plates, the first ear plate is welded to the transition plate, the first stiffening plate is disposed on at least one side of the first ear plate, and the first stiffening plate is welded to the first ear plate and the transition plate respectively.

[0014] This utility model has the following beneficial effects: 1. The first and second connecting parts of this utility model can connect adjacent first bridge deck bodies, thereby increasing the span of the sidewalk. They are connected by pins in the horizontal movable slot, and can only be adjusted and moved horizontally along the horizontal movable slot. In the longitudinal direction, they are limited to prevent the suspension bridge from drifting longitudinally.

[0015] 2. The length of the slot (elongated hole) can accommodate the positional error of the pin holes on the two ear plates. Even if there is a lateral or longitudinal deviation in the pin holes of the two ear plates during machining or assembly, the pin can still be inserted through the slot, avoiding assembly difficulties caused by the difficulty of precise hole alignment.

[0016] 3. No need for high-precision machining of the ear plate pin hole position, reducing machining costs and time, while improving the assembly success rate of the component.

[0017] 4. When the equipment expands and contracts due to temperature changes, the slot allows the pin to move along the length direction within the hole, avoiding structural stress concentration caused by rigid connection and preventing component deformation or damage.

[0018] 5. The slot allows the pin to move slightly within the hole, which can disperse local stress at the connection point.

[0019] 6. The first and second connectors are easy to assemble and install.

[0020] 7. The ear plates are factory welded and connected on site using pins, ensuring reliable installation quality.

[0021] 8. Both concrete box girders and steel box girders can be used, making it widely applicable. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the bridge splicing state provided in a specific embodiment of this utility model; Figure 2 This is a schematic diagram of the actual installation of the bridge body provided in a specific embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the first bridge deck body provided in a specific embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the second bridge deck body provided in a specific embodiment of the present utility model; Figure 5 This is a schematic diagram showing the connection between the second bridge deck body and the first bridge deck body in a specific embodiment of this utility model; Figure 6 This is a schematic diagram showing the connection between the first bridge deck body and the first bridge deck main body in a specific embodiment of this utility model; Figure 7 This is a side view of the second connector provided in a specific embodiment of the present utility model; Figure 8 This is a side view of the second connector from another perspective provided in a specific embodiment of the present utility model; Figure 9 This is a schematic diagram showing the connection between the first connector and the second connector provided in a specific embodiment of this utility model; Figure 10 This is a side view of the first connector provided in a specific embodiment of the present utility model; Figure 11 This is a top view of the first connecting member provided in a specific embodiment of the present utility model; Figure 12 This is a schematic diagram of the overall structure of the first connector provided in a specific embodiment of the present utility model; Figure 13 This is a top view of the first connector provided in a specific embodiment of the present utility model.

[0023] Explanation of symbols for main components: 100. Second bridge deck main body; 110. First connecting piece; 111. Embedded part; 112. Transition plate; 113. First ear plate; 1132. First stiffening plate; 200. First bridge deck main body; 210. Second connecting piece; 211. Second ear plate; 212. Second stiffening plate; 213. Horizontal movable slot; 300. Pin. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] Example 1 like Figures 1-5 This utility model provides a bridge deck connection structure for a suspended bridge, including: a second bridge deck main body 100 and a first bridge deck main body 200. The second bridge deck main body 100 adopts a pier support structure, that is, the second bridge deck main body 100 is supported by piers. The first bridge deck main body 200 adopts a suspension structure, that is, the first bridge deck main body 200 is suspended below the bridge deck of the viaduct by hangers or cables. In other embodiments, the second bridge deck main body 100 can also adopt a suspension support structure. Due to the dense truss members of the steel truss main beam, the pedestrian bridge's view is obstructed. However, the first bridge deck main body 200 of the suspension structure is suspended below the viaduct by hangers / cables, and there are no solid support components below the bridge deck, forming a "suspended and transparent" effect.

[0026] A first connector 110 is provided at one end of the first bridge deck main body 200, and a second connector 210 is provided at the other end. Both the first connector 110 and the second connector 210 have horizontal movable slots 213. The first connector 110 and the second connector 210 are connected by pins 300, which pass through the horizontal movable slots 213. Because the steel truss main beam is rigidly connected, it can only be arranged in a straight plane. However, in the suspension structure, the second bridge deck main body 100 is connected to the first bridge deck main body 200 through a hinge point, allowing the first bridge deck main body 200 to rotate in the plane, and can realize complex lines such as curves and S-shapes.

[0027] The first bridge deck main body 200 is a steel box girder, which is prefabricated in the factory. The second connecting piece 210 is welded to the first bridge deck main body 200. The second connecting piece 210 can also be pre-welded in the factory to reduce on-site construction time.

[0028] like Figures 10-13The first connector 110 includes an embedded part 111 and a transition plate 112. One side of the transition plate 112 is fixedly connected to the end of the embedded part 111, and the other side of the transition plate 112 is fixedly connected to the first ear plate 113. The second bridge deck body 100 is a concrete box girder, and the embedded part 111 is embedded inside the second bridge deck body 100. The transition plate 112 is embedded at the end of the second bridge deck body 100. In this embodiment, the embedded part 111 is composed of several reinforcing bars, which are evenly distributed on the side of the transition plate 112. The bond strength between the reinforcing bars and the concrete can effectively resist the pull-out force of the connector. At the same time, the transition plate 112, as an intermediate force transmission component, can transfer the concentrated load of the first ear plate 113 to the embedded part 111 through planar diffusion, avoiding local crushing.

[0029] The transition plate 112 has several through holes, and one end of the reinforcing bar passes through these holes and is welded to the transition plate 112. That is, the transition plate 112 and the reinforcing bar are connected by through-hole plug welding. The advantage of through-hole plug welding is that it can provide very strong connection strength in a localized area without requiring full welding of the entire workpiece. This not only saves time and materials but also avoids problems such as workpiece deformation or an excessively large heat-affected zone caused by full welding.

[0030] The first connecting member 110 includes a plurality of first stiffening plates 1132, a first ear plate 113 welded to a transition plate 112, and a first stiffening plate 1132 disposed on at least one side of the first ear plate 113. The first stiffening plate 1132 is welded to both the first ear plate 113 and the transition plate 112. The first stiffening plate 1132, the first ear plate 113, and the transition plate 112 form a triangular support structure, which converts concentrated loads into uniformly distributed forces that diffuse along the first stiffening plate 1132.

[0031] like Figures 7-9 The second connector 210 includes at least one second lug plate 211, which is welded to the first bridge deck body 200. The second connector 210 also includes a plurality of second stiffening plates 212, which are disposed on at least one side of the second lug plate 211 and are welded to both the second lug plate 211 and the first bridge deck body 200. The second stiffening plates 212, the second lug plate 211, and the first bridge deck body 200 form a triangular support structure, converting concentrated loads into uniformly distributed forces diffused along the second stiffening plates 212.

[0032] A horizontal movable slot 213 is formed on the first ear plate 113 and the second ear plate 211. In this embodiment, the horizontal movable slot 213 allows the pin 300 to move, which can eliminate the additional stress caused by thermal expansion and contraction of the bridge body.

[0033] Example 2 like Figure 6The main difference between this embodiment and Embodiment 1 is that the second bridge deck main body 100 is a steel box girder. Both concrete box girders and steel box girders can be used, making it widely applicable.

[0034] Example 3 The difference between this embodiment and Embodiment 1 is that it does not include the second bridge deck body 100. The bridge deck connection structure of this suspension bridge includes a first bridge deck body 200, a first connector 110 being a first lug 113, and a second connector 210 being a second lug 221. The first lug 113 and the second lug 221 are respectively welded to both ends of the second bridge deck body 100. The first connector 110 and the second connector 210 of adjacent first bridge deck bodies 200 are connected by pins.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bridge deck connection structure for a suspension bridge, characterized in that, include: The first bridge deck body (200) adopts a suspension structure; one end of the first bridge deck body (200) is fixedly connected to a first connector (110), and the other end is fixedly connected to a second connector (210). Both the first connector (110) and the second connector (210) are provided with horizontal movable slots (213). The first connectors (110) and the second connectors (210) of two adjacent first bridge deck bodies (200) are connected by pins (300), and the pins (300) are inserted into the horizontal movable slots (213); the first bridge deck body (200) is a steel box girder.

2. The bridge deck connection structure of a suspension bridge according to claim 1, characterized in that: It also includes a second bridge deck body (100), which adopts a pier support structure or a suspension structure. At least one end of the second bridge deck body (100) is fixedly connected to a first connector (110) or a second connector (210). The first bridge deck body (200) and the second bridge deck body (100) are connected by the first connector (110) and the second connector (210). The second bridge deck body (100) is a concrete box girder or a steel box girder.

3. The bridge deck connection structure of a suspension bridge according to claim 2, characterized in that: The first connector (110) includes a first ear plate (113), and the second connector (210) includes at least one second ear plate (211). The second ear plate (211) is welded to the first bridge deck body (200). The horizontal movable slot (213) is formed on the first ear plate (113) and the second ear plate (211).

4. The bridge deck connection structure of a suspension bridge according to claim 3, characterized in that: The second connector (210) also includes a plurality of second stiffening plates (212), which are disposed on at least one side of the second ear plate (211) and are welded to the second ear plate (211) and the first bridge deck body (200) respectively.

5. The bridge deck connection structure of a suspension bridge according to claim 3, characterized in that: When the first connector (110) is installed on the second bridge deck body (100), the first connector (110) further includes a pre-embedded part (111) and a transition plate (112). One side of the transition plate (112) is fixedly connected to the end of the pre-embedded part (111), and the other side of the transition plate (112) is fixedly connected to the first ear plate (113) of the connector. The second bridge deck body (100) is a concrete box girder, and the pre-embedded part (111) is pre-embedded inside the second bridge deck body (100).

6. The bridge deck connection structure of a suspension bridge according to claim 5, characterized in that: The transition plate (112) is embedded at the end of the second bridge deck body (100).

7. The bridge deck connection structure of a suspension bridge according to claim 6, characterized in that: The embedded part (111) is composed of several steel bars, which are evenly distributed on the side of the transition plate (112).

8. The bridge deck connection structure of a suspension bridge according to claim 7, characterized in that: The transition plate (112) has several through holes, one end of the reinforcing bar is inserted into the through holes and welded to the transition plate (112).

9. The bridge deck connection structure of a suspension bridge according to claim 8, characterized in that: The first connector (110) further includes a plurality of first stiffening plates (1132), the first ear plate (113) is welded to the transition plate (112), the first stiffening plate (1132) is disposed on at least one side of the first ear plate (113), and the first stiffening plate (1132) is welded to the first ear plate (113) and the transition plate (112) respectively.

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