Railway ballasted track multi-line bridge section connection structure

Abstract

The present invention discloses a section connection structure of a multi-line bridge on a railway ballasted track. The present invention comprises a fixed side vertical wall, a movable side vertical wall and a cover plate, wherein the first end of the cover plate is fixedly connected to the top of the fixed side vertical wall, the second end is arranged at the top of the movable side vertical wall, the contact surface between the second end and the movable side vertical wall is an inclined surface, and a sliding layer is arranged between the cover plate and the movable side vertical wall; the fixed side vertical wall and the movable side vertical wall are respectively provided with reserved holes, and the two ends of the spring pass through the reserved holes and are respectively fixedly connected to the movable side anchor plate and the fixed side anchor plate; the movable side anchor plate is fixedly connected to the movable side vertical wall, and the fixed side anchor plate is fixedly connected to the fixed side vertical wall. The present invention has a simple structure and is easy to implement. The space between the fixed side vertical wall and the movable side vertical wall can meet the operating space of the cantilever construction hanging basket of the multi-line bridge on the railway ballasted track; and it can meet the requirements of the lateral movement of each section of the bridge and can be restored to the initial design position.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering construction, and in particular relates to a railway ballasted track multi-line bridge section connection structure. Background Art

[0002] As the task of railway construction becomes increasingly arduous, the application of multi-track railway bridges is increasing compared with traditional single-track or double-track railway bridges. Considering many aspects such as structural stress, construction technology, and construction period, multi-track railway ballasted track bridges often adopt the form of sectioning.

[0003] A 2cm gap is reserved at the section of the traditional railway ballasted track bridge, and the gap is filled with asphalt wood boards. The top surface is connected to the bridge deck to form a waterproof layer and a protective layer. However, for bridges with larger spans such as continuous beams and continuous rigid frames in cantilever construction, the traditional section connection structure cannot meet the requirements of the hanging basket operation space during cantilever construction; if the structural section is cancelled, the influence of multi-line eccentric loads needs to be considered during design compared with traditional single-track or double-track bridges, which increases the design difficulty; and when the multi-track bridge is divided into cantilever construction beam sections without sectioning, the beam section length that meets the maximum cantilever casting weight of the hanging basket is shorter than that of traditional single-track or double-track bridges, thereby increasing the cantilever construction period of the bridge. When a multi-track bridge crosses existing structures such as highways, municipal roads or railways near a city, the construction period is a control factor that needs to be considered when designing a multi-track bridge. Summary of the invention

[0004] In order to make up for the shortcomings of the prior art, the present invention provides a railway ballasted track multi-line bridge segment connection structure, so that the operation space and construction period of the bridge cantilever construction basket can meet the requirements, and the lateral force of the bridge can be ensured to be simple and clear.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A railway ballasted track multi-line bridge section connection structure, comprising a fixed side vertical wall, a movable side vertical wall and a cover plate, wherein the fixed side vertical wall is fixedly connected to the fixed side bridge flange end, and the movable side vertical wall is fixedly connected to the movable side bridge flange end;

[0007] The first end of the cover plate is fixedly connected to the top of the fixed side vertical wall, and the second end of the cover plate is arranged on the top of the movable side vertical wall; the contact surface between the second end of the cover plate and the movable side vertical wall is an inclined surface;

[0008] The fixed side vertical wall and the movable side vertical wall are respectively provided with reserved holes, a spring is provided between the fixed side vertical wall and the movable side vertical wall, and two ends of the spring pass through the reserved holes and are respectively fixedly connected to the movable side anchor plate and the fixed side anchor plate;

[0009] The movable side anchor plate is fixedly connected to the movable side vertical wall, and the fixed side anchor plate is fixedly connected to the fixed side vertical wall.

[0010] Optimally, the first end of the cover plate is connected to the top of the fixed side vertical wall by using anchor bars or bolts.

[0011] Optimally, a sliding layer is provided between the cover plate and the movable side vertical wall.

[0012] Optimally, the sliding layer is a polytetrafluoroethylene plate.

[0013] Optimally, the spring is connected to the movable side anchor plate and the fixed side anchor plate by welding or bolting.

[0014] Optimally, the fixed side vertical wall and the movable side vertical wall can be cast together with the beam body, and can also be connected to the beam body through anchor bars.

[0015] Beneficial effects of the present invention:

[0016] 1) The space between the fixed side vertical wall and the movable side vertical wall in the present invention can meet the operating space of the cantilever construction hanging basket of the railway ballasted track multi-line bridge;

[0017] 2) One end of the cover plate in the present invention is fixedly connected to the vertical wall, which can meet the needs of lateral movement of each bridge and can be restored to the initial design position through a spring;

[0018] 3) In the present invention, the contact surface between the cover plate and the movable side vertical wall is an inclined surface, and a sliding layer is provided between the cover plate and the movable side vertical wall, so that the bridge can move freely laterally, and the ballast is not easy to get stuck during the recovery process;

[0019] 4) The present invention has a simple structure, is easy to implement, and the lateral force of the bridge is concise and clear, and has broad application prospects in the field of bridges. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the cross section of the structure of the present invention between two bridges in the transverse direction of the bridge;

[0021] Figure 2 It is a schematic cross-sectional view of a local structure of the movable side of the present invention;

[0022] Figure 3 It is a schematic elevation view of the fixed side of the present invention along the longitudinal direction of the bridge;

[0023] Figure 4 It is a schematic elevation view of the movable side of the present invention along the longitudinal direction of the bridge;

[0024] In the figure, 1-fixed side vertical wall, 2-cover plate, 3-spring, 4-reserved hole, 5-movable side vertical wall, 6-movable side anchor plate, 7-movable side bridge flange, 8-fixed side bridge flange, 9-fixed side anchor plate, 10-sliding layer. DETAILED DESCRIPTION

[0025] The present invention is described in detail below in conjunction with specific implementation modes.

[0026] like Figure 1 As shown, the present invention comprises a fixed side vertical wall 1, a movable side vertical wall 5 and a cover plate 2; the space between the fixed side vertical wall 1 and the movable side vertical wall 5 can meet the operating space of the cantilever construction hanging basket of the railway ballasted track multi-line bridge;

[0027] The fixed side vertical wall 1 is fixedly connected to the end of the fixed side bridge flange 8, and the movable side vertical wall 5 is fixedly connected to the end of the movable side bridge flange 7; for cast-in-place bridges, the fixed side vertical wall 1 and the movable side vertical wall 5 can be cast together with the beam body; for prefabricated bridges, anchor bars of the fixed side vertical wall 1 and the movable side vertical wall 5 need to be embedded in advance;

[0028] The first end of the cover plate 2 is connected to the top of the fixed side vertical wall 1 by anchor bars or bolts, and the second end of the cover plate 2 is arranged on the top of the movable side vertical wall 5, which can meet the needs of lateral movement of each bridge;

[0029] like Figure 2 As shown, the contact surface between the second end of the cover plate 2 and the movable side vertical wall 5 is an inclined surface; a sliding layer 10 is arranged between the cover plate 2 and the movable side vertical wall 5, and the sliding layer 10 is made of a polytetrafluoroethylene plate with a small sliding friction coefficient, so that the bridge is not prone to jamming during the lateral movement process; the sliding layer 10 can also be replaced by other materials with a small sliding friction coefficient, all of which are within the protection scope of this patent.

[0030] A reserved hole 4 is provided on the fixed side vertical wall 1 and the movable side vertical wall 5, respectively, and a spring 3 is provided between the fixed side vertical wall 1 and the movable side vertical wall 5; both ends of the spring 3 pass through the reserved holes 4 and are fixedly connected to the movable side anchor plate 6 and the fixed side anchor plate 9, respectively, and the spring 3 is connected to the movable side anchor plate 6 and the fixed side anchor plate 9 by welding or bolting; under the action of the spring 3, the beam body can be restored to the initial design position;

[0031] like Figure 3 , 4 As shown, the movable side anchor plate 6 and the fixed side anchor plate 9 are both circular, the movable side anchor plate 6 is bolted to the movable side vertical wall 5 , and the fixed side anchor plate 9 is bolted to the fixed side vertical wall 1 .

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", and "fix" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The content of the present invention is not limited to the embodiments listed, and any equivalent changes made to the technical solution of the present invention by ordinary technicians in this field after reading the description of the present invention are covered by the claims of the present invention.

Claims

1. A railway ballasted track multi-line bridge section connection structure, characterized in that: It comprises a fixed side vertical wall (1), a movable side vertical wall (5) and a cover plate (2), wherein the fixed side vertical wall (1) is fixedly connected to the end of a fixed side bridge flange (8), and the movable side vertical wall (5) is fixedly connected to the end of a movable side bridge flange (7); The first end of the cover plate (2) is fixedly connected to the top of the fixed side vertical wall (1), and the second end of the cover plate (2) is arranged on the top of the movable side vertical wall (5); the contact surface between the second end of the cover plate (2) and the movable side vertical wall (5) is an inclined surface; The fixed side vertical wall (1) and the movable side vertical wall (5) are respectively provided with reserved holes (4), a spring (3) is provided between the fixed side vertical wall (1) and the movable side vertical wall (5), and two ends of the spring (3) pass through the reserved holes (4) and are respectively fixedly connected to the movable side anchor plate (6) and the fixed side anchor plate (9); The movable side anchor plate (6) is fixedly connected to the movable side vertical wall (5), and the fixed side anchor plate (9) is fixedly connected to the fixed side vertical wall (1); A sliding layer (10) is provided between the cover plate (2) and the movable side vertical wall (5).

2. The railway ballasted track multi-line bridge framing connection structure according to claim 1, characterized in that: The first end of the cover plate (2) is connected to the top of the fixed side vertical wall (1) by using anchor bars or bolts.

3. The railway ballasted track multi-line bridge framing connection structure according to claim 2, characterized in that: The sliding layer (10) is a polytetrafluoroethylene plate.

4. The railway ballasted track multi-line bridge framing connection structure according to claim 3 is characterized in that: The spring (3) is connected to the movable side anchor plate (6) and the fixed side anchor plate (9) by welding or bolting.

5. The railway ballasted track multi-line bridge framing connection structure according to claim 4, characterized in that: The fixed side vertical wall (1) and the movable side vertical wall (5) are cast together with the beam body, or are connected to the beam body via anchor bars.

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