A tunnel-bridge co-construction mechanism

Abstract

The embodiment of the present application provides a tunnel-bridge co-construction mechanism, which is applied to the situation that a tunnel and a bridge are in the same line, and the tunnel-bridge co-construction mechanism comprises: a tunnel having a first layout line; a bridge having a plurality of piers, the plurality of piers are arranged along a second layout line of the bridge, and the pier located in the overlapping area of the first layout line of the tunnel and the second layout line of the bridge is arranged on the corresponding tunnel; wherein the tunnel is provided with a reinforcing structure for improving the rigidity at least towards one side of the pier. The tunnel-bridge co-construction mechanism provided by the embodiment of the present application can realize the co-construction of the tunnel and the bridge when the layout lines of the tunnel and the bridge overlap, and the bridge or the tunnel does not need to be laid around, thereby reducing the foundation excavation.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of tunnel and bridge construction technology, and particularly to a tunnel-bridge co-construction mechanism. Background Technology

[0002] With the improvement of urban functions and the growth of people's travel needs, the demand for coupled design of different modes of transportation such as rail transit, highways, railways, and tunnels is becoming increasingly prominent under limited land resources. Existing coupled design cases include dual-purpose road-rail bridges and dual-purpose road-rail tunnels, all of which are coupling of different modes of transportation within a single structure.

[0003] When land for transportation is limited, tunnels and bridges often run on the same line. In the past, tunnels and bridges were separated into different structures. However, in order to avoid the tunnels and bridges from affecting each other during the implementation and operation phases, the layout of bridge piers has become a major challenge. Summary of the Invention

[0004] This invention provides a tunnel-bridge co-construction mechanism that enables the joint construction of tunnels and bridges when their routes overlap, eliminating the need for detours for either bridges or tunnels and reducing foundation excavation.

[0005] To address the aforementioned technical problems, embodiments of the present invention provide a tunnel-bridge co-construction mechanism, applicable when a tunnel and a bridge are on the same vertical alignment. The tunnel-bridge co-construction mechanism includes:

[0006] The tunnel has the primary route;

[0007] A bridge has multiple piers arranged along a second route of the bridge. Piers located in the overlapping area of ​​the first route of the tunnel and the second route of the bridge are located on the corresponding tunnel.

[0008] The tunnel is provided with a reinforcing structure to enhance its rigidity on at least one side facing the bridge pier.

[0009] As an optional embodiment, the reinforcing structure includes a thickened layer disposed on the tunnel roof slab, and the bridge pier is disposed on the thickened layer.

[0010] As an alternative embodiment, the thickened layer is formed from reinforced concrete.

[0011] As an optional embodiment, the tunnel's ceiling is paved with steel plates.

[0012] As an optional embodiment, the top of the tunnel chamber is paved with steel plates at least in the area corresponding to the bridge pier.

[0013] As an alternative embodiment, the shape of the steel plate matches the shape of the cavern roof so that the steel plate can be attached to the cavern roof.

[0014] As an alternative embodiment, the tunnel is situated on a pier, which is formed of at least reinforced concrete.

[0015] As an optional embodiment, when the second layout line of the bridge completely overlaps with the first layout line of the tunnel, and the width of the bridge is not greater than the width of the tunnel, the layout line of the pier is matched with the first layout line of the tunnel or the second layout line of the bridge, and the width of the pier is matched with the width of the tunnel.

[0016] As an optional embodiment, when the second layout line of the bridge only partially overlaps the first layout line of the tunnel, and / or the width of the bridge is greater than the width of the tunnel, the layout line of the pier cap is at least matched with the overlapping layout lines of the tunnel and the bridge, and the width of the pier cap is matched with the width of the bridge, so that the portion of the pier cap located outside the tunnel in the width direction can support the corresponding bridge pier.

[0017] As an optional embodiment, a support mechanism is provided below the pier to support the pier. The support mechanism is located in the foundation of the tunnel and includes multiple support columns.

[0018] Based on the disclosure of the above embodiments, it can be understood that the beneficial effects of the embodiments of the present invention include: the designed tunnel-bridge co-construction mechanism can be applied to situations where tunnels and bridges are on the same vertical alignment. The overall structure of the mechanism is simple, including a tunnel constructed along a first route and a bridge with multiple piers constructed along a second route. For the overlapping portions of the two routes, the bridge piers are directly placed on the tunnel, eliminating the need for bridge detours. Furthermore, to improve tunnel rigidity, a reinforcing structure is provided on the side of the tunnel facing the bridge. This reinforcing structure effectively ensures the load-bearing capacity and rigidity of the tunnel structure while meeting the comfort requirements of the superbridge. In addition, the tunnel-bridge co-construction mechanism based on this embodiment can reduce the foundation excavation area, improve the level of intensive land use, and reduce the difficulty of pier placement for bridges co-located with tunnels.

[0019] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings.

[0020] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a partial structural schematic diagram of the tunnel-bridge co-construction mechanism in an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the tunnel structure of the tunnel-bridge co-construction mechanism in an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of another part of the tunnel-bridge co-construction mechanism in an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of another part of the tunnel-bridge co-construction mechanism in an embodiment of the present invention.

[0026] Figure label:

[0027] 1-Tunnel; 2-Bridge pier; 3-Reinforcing structure; 4-Steel plate; 5-Pile cap; 6-Supporting mechanism Detailed Implementation

[0028] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but these are not intended to limit the scope of the invention.

[0029] It should be understood that various modifications can be made to the embodiments disclosed herein. Therefore, the following description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this disclosure will be apparent to those skilled in the art.

[0030] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present disclosure and, together with the general description of the disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.

[0031] These and other features of the invention will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0032] It should also be understood that although the invention has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of the invention, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0033] The above and other aspects, features and advantages of this disclosure will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0034] Specific embodiments of the present disclosure are described thereafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure and can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that could obscure the present disclosure. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely to serve as the basis and representative basis for the claims to teach those skilled in the art to use the present disclosure in a variety of substantially any suitable detailed structures.

[0035] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in still another embodiment,” all of which may refer to one or more of the same or different embodiments according to this disclosure.

[0036] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0037] like Figure 1 and Figure 2 As shown, this embodiment of the invention provides a tunnel-bridge co-construction mechanism, applied when the tunnel and bridge are on the same vertical alignment. The tunnel-bridge co-construction mechanism includes:

[0038] Tunnel 1 has the first laid-out route;

[0039] The bridge has multiple piers 2, which are arranged along the second layout line of the bridge. The piers 2 located in the overlapping area of ​​the first layout line of the tunnel 1 and the second layout line of the bridge are set on the corresponding tunnel 1.

[0040] The tunnel 1 is provided with a reinforcing structure 3 for improving rigidity on at least one side facing the pier 2.

[0041] The tunnel-bridge co-construction mechanism in this embodiment is mainly used to solve the construction problem of tunnel 1 and bridge when their layout routes are partially or even completely identical. This tunnel-bridge co-construction mechanism is mainly installed on the parts of tunnel 1 and bridge that are vertically aligned and have overlapping construction locations. In other words, for tunnel 1 and bridge that are vertically aligned and have overlapping construction locations, the tunnel-bridge co-construction mechanism in this embodiment can be used as a substitute.

[0042] Specifically, the tunnel-bridge co-construction mechanism in this embodiment includes a tunnel 1 laid along a first route and a bridge laid along a second route. The bridge has multiple piers 2. The first and second routes at least partially overlap, or may completely overlap, depending on the specific circumstances. For the bridge and tunnel 1 in the overlapping area of ​​the routes, the bridge piers 2 are directly installed on the tunnel 1. The piers 2 do not need to avoid the tunnel 1, nor do they need to change the route or structural shape of the bridge. To improve the rigidity of the tunnel 1 and enable it to provide stable support for the bridge, a reinforcing structure 3 is provided on the side of the tunnel 1 facing the bridge.

[0043] Based on the above-disclosed embodiments, the tunnel-bridge co-construction mechanism designed in this embodiment can be applied to situations where tunnel 1 and bridge are on the same vertical alignment. The mechanism has a simple overall structure and is easy to implement, comprising only a tunnel 1 constructed along a first route and a bridge with multiple piers 2 constructed along a second route. For the overlapping sections of the two routes, the bridge piers 2 are directly placed on the tunnel 1, eliminating the need for bridge detours. Furthermore, to enhance the rigidity of tunnel 1, a reinforcing structure 3 is provided on the side of tunnel 1 facing the bridge. This reinforcing structure 3 effectively ensures the load-bearing capacity and rigidity of tunnel 1 while meeting the comfort requirements of the superbridge. Additionally, the tunnel-bridge co-construction mechanism of this embodiment reduces the excavation area of ​​the bridge and tunnel 1 foundations, effectively improving land use efficiency and reducing the difficulty of arranging the piers 2 of the bridge on the same vertical alignment as tunnel 1.

[0044] Furthermore, such as Figure 1 As shown, the reinforcing structure 3 in this embodiment includes a thickened layer disposed on the top slab of the tunnel 1, and the bridge pier 2 is disposed on the thickened layer. The thickened layer is made of reinforced concrete, and the specific location of the thickened layer is at the location corresponding to the bridge pier 2 on the tunnel 1. That is, the thickened layer can be disposed in multiple locations along the top of the tunnel 1, each corresponding to a bridge pier 2, or it can cover the entire top of the tunnel 1.

[0045] The specific thickness of the thickened layer is related to the number, cross-sectional area, and weight of the piers 2. The thickened layer is integrally formed with the roof slab of tunnel 1, or it can be constructed later on the roof slab of tunnel 1. In this embodiment, it is preferred to construct the roof slab of tunnel 1 and the thickened layer as an integral unit. The steel bars in the thickened layer are interlocked with the steel bars in the roof slab of tunnel 1, such as by interlocking and welding, and then concrete is poured to complete the construction.

[0046] In another embodiment, to prevent cracks in the concrete layer at the top of tunnel 1 due to long-term pressure, a steel plate 4 is laid on the top of the tunnel 1. The steel plate 4 can be laid to cover the entire top of the tunnel, or the top of the tunnel 1 can be laid with a steel plate 4 at least in the area corresponding to the pier 2.

[0047] In addition, such as Figure 3 As shown, in this embodiment, the shape of the steel plate 4 matches the shape of the cavern roof, so that the steel plate 4 can be attached to the cavern roof. Based on the steel plate 4 being attached to the cavern roof, the number of cracks in the concrete layer of the cavern roof can be effectively reduced, and the crack width can also be reduced.

[0048] In practical applications, the steel plate 4 can be embedded in the concrete layer at the top of the tunnel, or it can be fixed to the top of the tunnel by rivets, or other methods can be used for fixing. The thickness of the steel plate 4 is variable and can be specifically set according to the thickness of the tunnel top, etc.

[0049] In another embodiment, to further enhance the load-bearing capacity of tunnel 1 and prevent collapse, tunnel 1 in this embodiment rests on a foundation 5, which is at least made of reinforced concrete. The thickness of foundation 5 is related to the collinear area of ​​tunnel 1 and bridge, and the associated weight. Foundation 5 can be integrally formed with tunnel 1 or with the supporting structure described below; the specific form is not unique. To increase the connection strength, foundation 5 in this embodiment is fixedly connected to tunnel 1, such as by pouring concrete. This foundation 5 thickens the bottom slab of tunnel 1, thereby increasing the overall rigidity of tunnel 1 and ensuring structural symmetry.

[0050] When setting up foundation 5, such as Figure 3 As shown, if the second layout line of the bridge completely overlaps with the first layout line of the tunnel 1, and the width of the bridge is not greater than the width of the tunnel 1, then the layout line of the pier 5 matches the first layout line of the tunnel 1 or the second layout line of the bridge, and the width of the pier 5 matches the width of the tunnel 1, that is, as shown... Figure 1 As shown, the pier 5 has the same width as the tunnel 1 and is connected to it.

[0051] In another embodiment, such as Figure 4 As shown, if the second layout of the bridge only partially overlaps with the first layout of the tunnel 1, and / or the width of the bridge is greater than the width of the tunnel 1, that is, if the layouts of the bridge and tunnel 1 only partially overlap, and the width of the bridge is greater than the width of the tunnel 1, such that some piers 2 are located outside the tunnel 1, then the layout of the abutment 5 at least matches the overlapping layouts of the tunnel 1 and the bridge, and the width of the abutment 5 matches the width of the bridge, so that the portion of the abutment 5 located outside the tunnel 1 in the width direction can support the corresponding pier 2. In other words, within the overlapping area of ​​the bridge and tunnel 1, some piers 2 of the bridge are located on the tunnel 1, and another portion of piers 2 are located on the abutment 5 outside the tunnel 1. In this case, this portion of the abutment 5 bears and distributes the loads transmitted by the tunnel 1 and the piers 2.

[0052] Continue to combine Figure 1 As shown, a support mechanism 6 is provided below the pier 5 to support the pier 5. The support mechanism 6 is located in the foundation of the tunnel 1, that is, in the pit of the tunnel 1. The support mechanism 6 includes multiple support columns. The support columns can also be made of reinforced concrete. One end of the multiple support columns is fixedly connected to the pier 5, and the other end is fixedly connected to the foundation to bear the load transmitted by the pier 5 and transfer the load and its own weight to the foundation.

[0053] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A tunnel-bridge co-construction mechanism, applied in situations where the tunnel and bridge are on the same vertical alignment, characterized in that, The tunnel-bridge co-construction organizations include: The tunnel has the primary route; A bridge has multiple piers arranged along a second route of the bridge. Piers located in the overlapping area of ​​the first route of the tunnel and the second route of the bridge are located on the corresponding tunnel. The tunnel is provided with a reinforcing structure to enhance its rigidity on at least one side facing the bridge pier; The tunnel is situated on a pier, which is at least made of reinforced concrete. When the second layout line of the bridge completely overlaps with the first layout line of the tunnel, and the width of the bridge is not greater than the width of the tunnel, the layout line of the pier cap matches the first layout line of the tunnel or the second layout line of the bridge, and the width of the pier cap matches the width of the tunnel. When the second layout line of the bridge only partially overlaps the first layout line of the tunnel, and / or the width of the bridge is greater than the width of the tunnel, the layout line of the pier shall at least match the overlapping layout lines of the tunnel and the bridge, and the width of the pier shall match the width of the bridge, so that the portion of the pier located outside the tunnel in the width direction can support the corresponding pier. A support mechanism is provided below the pier to support the pier. The support mechanism is located in the foundation of the tunnel and includes multiple support columns.

2. The tunnel-bridge co-construction mechanism according to claim 1, characterized in that, The reinforcing structure includes a thickened layer disposed on the tunnel roof slab, and the bridge pier is disposed on the thickened layer.

3. The tunnel-bridge co-construction mechanism according to claim 2, characterized in that, The thickened layer is made of reinforced concrete.

4. The tunnel-bridge co-construction mechanism according to claim 1, characterized in that, The tunnel's ceiling is covered with steel plates.

5. The tunnel-bridge co-construction mechanism according to claim 4, characterized in that, The tunnel's top chamber is covered with steel plates at least in the area corresponding to the bridge pier.

6. The tunnel-bridge co-construction mechanism according to claim 5, characterized in that, The shape of the steel plate matches the shape of the cavern ceiling so that the steel plate can be attached to the cavern ceiling.

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