Bridge abutment structure at joint of bridge and tunnel

Abstract

The utility model discloses a bridge abutment structure at the joint of a bridge and a tunnel, which comprises a side cover beam for bearing the bridge; the rear side of the pipeline bin is connected with the side cover beam, the front side of the pipeline bin is connected with a tunnel, the pipeline bin comprises a front wall with an opening, and the opening is used for a pipeline in the tunnel to pass through. According to the utility model, the problems that the pipeline at the joint of the bridge and the tunnel is not suitable for maintenance and replacement and occupies a large area can be solved, and the technical effect that the pipeline at the joint of the bridge and the tunnel is detectable, repairable and replaceable is achieved. And meanwhile, the external landscape effect at the joint of the bridge and the tunnel is further improved.

Description

Technical Field

[0001] The utility model relates to the field of abutment structures, and particularly to an abutment structure at the connection of a bridge and a tunnel. Background Art

[0002] The engineering construction at the connection of a bridge and a tunnel occupies an important position in transportation infrastructure. Especially in mountainous and hilly areas, the design and construction at the bridge-tunnel connection have important impacts on the safety, durability, operation and maintenance of roads. However, due to complex geological environments, limited space and difficult pipeline layout at the bridge-tunnel connection, it often becomes the key point and difficulty in engineering construction.

[0003] For the existing inspection wells of the central drainage ditch at the bridge-tunnel connection, they are set in the middle side of the road at the tunnel exit, and the fire pipelines need to be horizontally connected at the tunnel entrance. For later maintenance and replacement, the road surface needs to be dug up after cutting off the traffic, resulting in a large amount of work and high engineering costs. The inspection wells set at the tunnel exit of the cable trench are generally exposed on both sides of the tunnel entrance, occupying a large area and having a poor landscape effect. The existing technologies have problems such as unsystematic integrated pipeline design, unreasonable pre-embedded reservation, insufficient construction space, and difficulty in later maintenance and replacement. Therefore, there is a need for an abutment structure at the bridge-tunnel connection that can improve the convenience of pipeline inspection and replacement, which can not only effectively solve the problems of pipeline layout and maintenance, but also further improve the external landscape effect at the bridge-tunnel connection. Summary of the Utility Model

[0004] The utility model aims to provide an abutment structure at the bridge-tunnel connection, which can solve the above technical problems.

[0005] According to one aspect of the utility model, there is provided an abutment structure at the bridge-tunnel connection, including: side capping beams for bearing the bridge; and a pipeline chamber, connected to the side capping beams at the rear side and to the tunnel at the front side, wherein the pipeline chamber includes a front wall with an opening for passing the pipelines in the tunnel.

[0006] Preferably, the pipeline chamber further includes: a bottom plate, a top plate, two side walls and a back wall, jointly forming the closed pipeline chamber.

[0007] Preferably, the pipeline chamber further includes: one or more partition plates for compartmentalizing.

[0008] Preferably, the partition plate is provided with an opening for the transverse pipelines to pass through.

[0009] Preferably, the side wall is provided with an opening and a door body.

[0010] Preferably, an abutment pile foundation is provided below the abutment structure.

[0011] Preferably, an abutment structure stop block is provided above the side capping beam to prevent lateral displacement of the bridge.

[0012] The utility model provides an abutment structure at the junction of a bridge and a tunnel, including: a side capping beam for bearing the bridge; and a pipeline chamber, connected to the rear side of the side capping beam and to the front side of the tunnel, wherein the pipeline chamber includes a front wall with an opening for passing pipelines in the tunnel. The utility model can mainly solve the following problems: providing a pipeline chamber to solve the problems of high implementation difficulty and high cost in pipeline installation, maintenance and replacement at the junction of a bridge and a tunnel. It can hide the maintenance and conversion wells of mechanical and electrical equipment from above the bridge deck to below the bridge, with good landscape effect. The back side of the abutment is replaced by a structure to solve the problem of vehicle bump caused by poor compaction of the abutment fill. The side capping beam and the pipeline chamber jointly bear the upper bridge load, reducing the internal force and reinforcement of the abutment and pile foundation, saving the project cost, thus solving the problems of high construction difficulty, large workload and high project cost in pipeline maintenance and replacement at the junction of a bridge and a tunnel, and achieving a better landscape effect. Brief Description of the Drawings

[0013] The drawings described herein are used to provide a further understanding of the utility model, and constitute a part of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute an improper limitation of the utility model. In the drawings:

[0014] Figure 1 A three-dimensional effect diagram of the abutment structure according to an embodiment of the utility model is shown;

[0015] Figure 2 A schematic internal structure diagram of the abutment structure according to an embodiment of the utility model is shown;

[0016] In the figure: 1, roof slab; 2, front wall; 3, partition board; 4, side wall; 5, opening and door body; 6, back wall; 7, abutment structure stop block; 8, side capping beam; 9, abutment pile foundation. Detailed Embodiments

[0017] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0018] Now, the various embodiments of the utility model will be described in detail. Examples of these embodiments are shown in the drawings and described as follows. For the purpose of interpretation and precise definition in the appended claims, the terms "upper", "lower", "inner" and "outer" are used to describe the features with reference to the positions of the features in the exemplary embodiments shown in the drawings.

[0019] The utility model provides an abutment structure at the connection of a bridge and a tunnel, comprising: a side capping beam 8 for bearing the bridge; and a pipeline bin, connected to the side capping beam 8 at the rear side and to the tunnel at the front side, wherein the pipeline bin comprises a front wall 2 with an opening for passing the pipelines in the tunnel.

[0020] In the related art, the treatment method at the connection of the abutment and the tunnel generally is to set a approach slab behind the abutment to connect with the tunnel. The comprehensive pipeline design is not systematic, the reserved pre-embedding is unreasonable, and the construction working face is insufficient, resulting in engineering problems such as great difficulty in later maintenance and replacement construction, large workload and high engineering cost, and poor landscape effect. The embodiment of the utility model provides a novel abutment structure with the function of a comprehensive pipeline bin at the connection of a bridge and a tunnel, provides the pipeline bin, and solves the problems of great difficulty and high cost in pipeline installation, maintenance and replacement at the connection of a bridge and a tunnel; can hide the maintenance and conversion well of the mechanical and electrical from above the bridge deck to under the bridge, improving the external visual landscape effect; uses a structure to replace the backfill at the rear side of the abutment, solving the problem of vehicle bump caused by the incompact backfill of the abutment; the side capping beam and the pipeline bin jointly bear the upper bridge load, reducing the internal force and reinforcement of the abutment and pile foundation, and saving the project cost.

[0021] According to the embodiment of the utility model, the pipeline bin comprises: a bottom plate, an approach slab 1, two abutment wing walls 4 and a back wall 6, jointly forming the closed pipeline bin; the pipeline bin further comprises: one or more partition plates 3 for bin division; the partition plate 3 is provided with an opening for the transverse pipelines to pass through.

[0022] In the related art, there are technical problems such as a narrow working face in the ultra-short subgrade range between the bridge and the tunnel, many facilities to be arranged, dense pipelines, many professional interfaces of the road-bridge-tunnel pipelines, and great difficulty in overall design coordination. The embodiment of the utility model provides a novel abutment structure with the function of a comprehensive pipeline bin at the connection of a bridge and a tunnel, combines the side wall and the top plate of the abutment, forms a closed pipeline bin together with the front wall and the back wall, and arranges partition plates in the pipeline bin to divide the large pipeline bin into bins and arrange pipelines in the bins, thereby being able to solve the technical problems of a narrow working face in the ultra-short subgrade range between the bridge and the tunnel, many facilities to be arranged, dense pipelines, many professional interfaces of the road-bridge-tunnel pipelines, and great difficulty in overall design coordination, and achieving the technical effect of incorporating the pipelines at the connection of the bridge and the tunnel into the pipeline bin as much as possible.

[0023] In addition, the abutment wing wall 4 is provided with an opening and a door body 5; a pile foundation 9 of the abutment is arranged below the abutment structure; a retaining block 7 of the abutment structure is arranged above the side capping beam 8 for preventing the lateral displacement of the bridge.

[0024] In the related art, there are problems such as unsystematic preliminary pipeline comprehensive design, unreasonable reserved embedding, and the need to break traffic and excavate the road surface for later inspection and maintenance. Through the provision of a new abutment structure with an opening and a switch door device on the side wall of the abutment in the embodiments of the present invention, the technical problem that pipelines at the bridge-tunnel connection are not easy to repair and replace is solved, and the technical effect of facilitating the entry and exit of pipeline maintenance personnel for inspection, repair, and replacement is achieved.

[0025] The embodiments of the present invention will be specifically described below with reference to the accompanying drawings. By providing an abutment structure at the bridge-tunnel connection, the present invention can improve the rationality of pipeline comprehensive design. Figure 1 The three-dimensional effect diagram of the abutment structure according to the embodiment of the present invention is shown. Figure 2 The internal structure schematic diagram of the abutment structure according to the embodiment of the present invention is shown. As Figure 1 and Figure 2 shown, it can be seen from the figure that the abutment structure at the bridge-tunnel connection includes: a top plate 1; a bridge front wall 2, connected to the tunnel structure, the bridge front wall is open, and the pipelines in the tunnel enter the pipeline bin through the bridge front wall; a partition 3, used to support the top plate 1 and the load on the structure of the top plate 1, and the partition is provided with a hole for the horizontal pipe passing of the pipelines at the bridge-tunnel connection; two side walls 4; an opening and a door body 5 on the side wall, facilitating the entry of personnel for later inspection, maintenance, and replacement; an abutment back wall 6; an abutment structure stop block 7, preventing the lateral displacement of the bridge; a side capping beam 8, used to carry the bridge; an abutment pile foundation 9.

[0026] In summary, in the related art, there are problems such as unsystematic pipeline comprehensive design, unreasonable reserved embedding, and insufficient consideration of construction requirements and working surfaces. The present invention provides a new abutment structure with a comprehensive pipeline bin function at the bridge-tunnel connection, as Figure 1 and Figure 2 shown, thereby solving the problems that pipelines at the bridge-tunnel connection are not easy to repair, not easy to replace, and occupy more land, and achieving the technical effects of the pipelines at the bridge-tunnel connection being detectable, repairable, and replaceable.

[0027] The following embodiments are only examples for clearly explaining the present invention, and do not limit the implementation manners of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the following description, and these various changes, modifications, substitutions, and deformations derived from the principles and spirits of the present invention still fall within the protection scope of the present invention.

[0028] According to the first embodiment of the present utility model, a new type of abutment with the function of an integrated pipeline warehouse at the bridge-tunnel connection is provided. The side wall of the abutment is combined with the top plate to form a closed pipeline warehouse together with the front wall and the back wall. The side wall of the abutment also serves as the ear wall of the abutment, and the top plate also serves as the approach slab of the abutment. The front wall is connected to the tunnel and is provided with an opening for introducing the pipelines in the tunnel into the pipeline warehouse of the abutment.

[0029] According to the second embodiment of the present utility model, a partition is provided in the pipeline warehouse to divide the large pipeline warehouse into sub-warehouses, and pipelines are arranged in the sub-warehouses.

[0030] According to the third embodiment of the present utility model, an opening is provided in the partition to facilitate the passage of horizontal pipelines.

[0031] According to the fourth embodiment of the present utility model, an opening and a switch door device are provided on the side wall to facilitate access for maintenance and replacement.

[0032] The present utility model introduces the concept of integrated pipelines into the pipeline treatment at the bridge-tunnel connection of mountain bridges. It is used at the bridge-tunnel connection of mountain bridges and can solve the problems that pipelines at the bridge-tunnel connection are not easy to maintain, not easy to replace, and occupy a large area.

[0033] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A bridge abutment structure at the junction of a bridge and a tunnel, characterized in that: include: Side cap beam (8), used to support the bridge; as well as A pipeline bin, the rear side of which is connected to the side cover beam (8), and the front side of which is connected to the tunnel, wherein the pipeline bin comprises a front wall (2) having an opening, and the opening is used for passing the pipeline in the tunnel.

2. The abutment structure according to claim 1, characterized in that: The pipeline bin further comprises: a bottom plate, a top plate (1), two side walls (4) and a back wall (6), which together form the closed pipeline bin.

3. The abutment structure according to claim 2, characterized in that: The pipeline bin further comprises: one or more partitions (3) for dividing the bins.

4. The abutment structure according to claim 3, characterized in that: The partition plate (3) is provided with an opening for the transverse pipeline to pass through.

5. The abutment structure according to claim 4, characterized in that: The side wall (4) is provided with an opening and a door body (5).

6. The abutment structure according to any one of claims 1 to 5, characterized in that: A bridge abutment pile foundation (9) is provided below the abutment structure.

7. The abutment structure according to any one of claims 1 to 5, characterized in that: A bridge abutment structure stopper (7) is provided above the side cap beam (8) to prevent lateral displacement of the bridge.

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