Overlapped shield tunnel foundation reinforcing structure adjacent to old house

Abstract

The utility model discloses an overlapped shield tunnel foundation reinforcing structure adjacent to an old house. The overlapped shield tunnel foundation reinforcing structure comprises a top support, the side plates are arranged on the left side and the right side of the top support respectively. The upper ends of the side plates are fixedly connected with the two ends of the top support respectively. The upper end surface of the bottom plate is connected with the lower ends of the side plates respectively; the plurality of supporting plates are in one-to-one correspondence with the wave-shaped upward-protruding grooves in the top support, and the supporting plates are clamped with the inner side walls of the wave-shaped upward-protruding grooves in the top support; a plurality of through holes I are uniformly distributed in each supporting plate; a plurality of through holes II are uniformly distributed on the side plate, and one end of each through hole II arranged on the inner side of the side plate is higher than one end arranged on the outer side of the side plate; the multiple clamping rings correspond to the second through holes one to one, the clamping rings are arranged in the second through holes and are coaxial with the second through holes, and the clamping rings are fixedly connected with the inner walls of the second through holes. The beneficial effects of the utility model are that: can reinforce the house foundation and reduce the damage to the interior of shield tunnel.

Description

Technical Field

[0001] This utility model relates to the technical field of shield tunnel foundation reinforcement, and in particular to a foundation reinforcement structure for shield tunnels that overlap with old buildings. Background Technology

[0002] The biggest concern with shield tunnels near old houses is the impact on the foundations of those houses. To minimize the impact on the surrounding old houses, the area around the shield tunnel is usually reinforced, using methods such as adding piles, grouting reinforcement, and installing anchor cables. However, these methods generally cause some damage to the interior of the shield tunnel. Utility Model Content

[0003] This utility model aims to overcome the shortcomings of existing technologies that reinforce the foundation of existing buildings but cause some damage to the interior of shield tunnels. It provides a foundation reinforcement structure for shield tunnels adjacent to old buildings that can both reinforce the foundation of existing buildings and reduce damage to the interior of shield tunnels.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A foundation reinforcement structure for shield tunnels intersecting with old buildings adjacent to them includes:

[0006] A top support is placed at the top inside the shield tunnel, and the cross-sectional shape of the top support is wavy.

[0007] Side plates are respectively placed on the left and right sides of the top support, and the upper ends of the side plates are fixedly connected to the two ends of the top support.

[0008] A base plate is placed at the lower end of the side plate, and the upper end face of the base plate is connected to the lower end of the side plate respectively;

[0009] Several trays correspond one-to-one with the wavy, upward-protruding grooves inside the top support, and the trays are engaged with the inner sidewalls of the wavy, upward-protruding grooves inside the top support.

[0010] Several through holes are evenly distributed on each tray;

[0011] Several through holes are evenly distributed on the side plate, with the end of the through hole located on the inner side of the side plate being higher than the end located on the outer side of the side plate.

[0012] Several retaining rings correspond one-to-one with the second through hole. The retaining rings are placed inside the second through hole and are coaxial with the second through hole. The retaining rings are fixedly connected to the inner wall of the second through hole.

[0013] When foundation reinforcement is required, the base plate is first placed on the ground inside the tunnel. Then, the side plates are placed against the sides of the tunnel, and a top support is placed on the side plates and the top surface of the tunnel. The wavy shape of the top support increases the compactness of the soil around the tunnel. After the support plate is installed within the wavy arc of the top support, grout can be injected into the wavy arc of the top support through the through hole one. This serves two purposes: first, to reinforce the top support, and second, to expand the wavy arc of the top support, making the external soil more compact. The reinforcement of both sides of the tunnel can be achieved by injecting grout into the through hole two on the side plate. This can fix the side plate, isolate the foundation of the old building from the tunnel, and use anchor cables or piles to fix the foundation. The retaining rings facilitate the fixing of anchor cables or piles and can also fix the grouting pipes, achieving the goal of both reinforcing the foundation of the old building and reducing damage to the inside of the shield tunnel.

[0014] Preferably, the top support is provided with several through holes three, which are evenly distributed within a wavy, upward-protruding groove inside the top support, and are positioned on the outer side of the support plate. The through holes three allow grout to be injected into the top of the tunnel to reinforce the foundation.

[0015] Preferably, the top support has two slots within its wavy, upward-protruding groove. These slots are positioned at both ends of the support plate, with both ends of the support plate nested within them. The support plate is engaged with the top support via the slots. These slots facilitate the securing of the support plate.

[0016] Preferably, the outer surface of the side plate is provided with a plurality of insert posts, each of which corresponds one-to-one with and is coaxial with the second through hole. The diameter of the lower end of the insert post is smaller at the bottom and larger at the top. The insert posts facilitate fixing the side plate.

[0017] Preferably, the upper surface of the base plate has two protrusions, which are respectively positioned below the two side plates and are fixedly connected to the base plate. The lower surface of the side plates has a second groove, which corresponds one-to-one with the protrusion. The protrusion is placed in the second groove, and the base plate is engaged with the side plates through the cooperation of the second groove and the protrusion. The second groove and the protrusion facilitate the installation between the side plates and the base plate.

[0018] Preferably, the base plate is provided with a plurality of through holes 4, which are evenly distributed on the base plate. The through holes 4 facilitate grouting of the tunnel surface.

[0019] Preferably, a baffle is provided on one side of the top support, the inner side of which contacts one end of the support plate. The baffle covers one side of all the wavy, upwardly protruding grooves on the top support, and the baffle is fixedly connected to the top support. The baffle can block the grout injected between the bottom support and the support plate, thereby allowing it to solidify.

[0020] The beneficial effects of this utility model are: it can both reinforce the foundation of the building and reduce damage to the inside of the shield tunnel; through hole three allows grout to be injected into the top of the tunnel to reinforce the foundation; slot one facilitates fixing the support plate; the insert column facilitates fixing the side plate; slot two and the protrusion facilitate the installation between the side plate and the bottom plate; through hole four facilitates grouting of the tunnel surface; the baffle can block the grout injected between the bottom support and the support plate, thereby solidifying it. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a cross-sectional view of the main view of this utility model;

[0023] Figure 3 yes Figure 2 A magnified view of detail A;

[0024] Figure 4 yes Figure 2 A magnified view of detail B.

[0025] In the diagram: 1. Top support, 2. Side plate, 3. Bottom plate, 4. Support plate, 5. Through hole one, 6. Through hole two, 7. Through hole three, 8. Slot one, 9. Insert post, 10. Protrusion, 11. Slot two, 12. Through hole four, 13. Snap ring, 14. Baffle. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1 , Figure 2 and Figure 4 In one embodiment, a foundation reinforcement structure for a shield tunnel adjacent to old buildings includes: a top support 1 placed at the top of the shield tunnel, the top support 1 having a wavy cross-section; side plates 2 placed on the left and right sides of the top support 1, the upper ends of the side plates 2 being fixedly connected to the two ends of the top support 1; a bottom plate 3 placed at the lower end of the side plates 2, the upper end face of the bottom plate 3 being connected to the lower end of the side plates 2; several support plates 4 corresponding one-to-one with the wavy upward protruding grooves in the top support 1, the support plates 4 being engaged with the inner sidewalls of the wavy upward protruding grooves in the top support 1; several through holes 5 evenly distributed on each support plate 4; several through holes 6 evenly distributed on the side plates 2, the end of the through hole 6 located on the inner side of the side plate 2 being higher than the end located on the outer side of the side plate 2; several retaining rings 13 corresponding one-to-one with the through holes 6, the retaining rings 13 being placed in the through holes 6 and coaxial with the through holes 6, the retaining rings 13 being fixedly connected to the inner wall of the through holes 6.

[0028] like Figure 1 and Figure 2As shown, the top support 1 is provided with several through holes 7, which are evenly distributed in the wavy, upward-protruding groove inside the top support 1, and the through holes 7 are placed on the outside of the support plate 4.

[0029] like Figure 3 As shown, the top support 1 has two slots 8 in the wavy, upward-protruding groove. The slots 8 are respectively placed at both ends of the support plate 4. The two ends of the support plate 4 are placed in the slots 8, and the support plate 4 is engaged with the top support 1 through the slots 8.

[0030] like Figure 3 As shown, several insertion posts 9 are provided on the outer side surface of the side plate 2. The insertion posts 9 correspond one-to-one with the through holes 6 and are coaxial with the through holes 6. The diameter of the lower end of the insertion post 9 is smaller at the bottom and larger at the top.

[0031] like Figure 3 As shown, the upper surface of the base plate 3 is provided with two protrusions 10, which are respectively placed below the two side plates 2. The protrusions 10 are fixedly connected to the base plate 3. The lower surface of the side plate 2 is provided with a second slot 11, which corresponds to the protrusions 10 one by one. The protrusions 10 are placed in the second slot 11, and the base plate 3 is engaged with the side plate 2 through the cooperation of the second slot 11 and the protrusions 10.

[0032] like Figure 1 As shown, the base plate 3 has several through holes 12, which are evenly distributed on the base plate 3.

[0033] like Figure 1 As shown, a baffle 14 is provided on one side of the top support 1. The inner side of the baffle 14 contacts one end of the support plate 4. The baffle 14 covers one side of all the wavy, upwardly protruding grooves on the top support 1. The baffle 14 is fixedly connected to the top support 1.

[0034] When foundation reinforcement is required, first place the base plate 3 on the ground inside the tunnel, then place the side plate 2 against the side of the tunnel, insert the post 9 into the side soil, and align the groove 11 at the bottom of the side plate 2 with the protrusion 10 on the base plate 3. Then, use the top support 1 to support the side plate 2 and the top surface of the tunnel. The wavy shape of the top support 1 increases the compactness of the soil around the tunnel. After inserting the support plate 4 into the groove 8 within the wavy arc of the top support 1, grout can be injected into the wavy arc of the top support 1 through the through hole 5. The baffle 14 assists in shaping, and the grout can also enter the outer side of the top support 1 through the through hole 7 to reinforce the tunnel. The top soil serves two purposes: firstly, to reinforce the top support 1, and secondly, to widen the wave arc of the top support 1, making the external soil more compact. The reinforcement of the tunnel sides can be achieved by grouting into the through holes 2 6 on the side plates. This can fix the side plates 2, isolate the foundation of the old houses from the tunnel, and allow anchor cables or piles to be inserted into the through holes 2 6 to fix the foundation. The retaining ring 13 facilitates the fixing of anchor cables or piles and can also fix the grouting pipe. Similarly, grouting from the through holes 4 12 on the bottom plate 3 can also fix the foundation below the bottom plate 3, achieving the goal of both reinforcing the foundation of the old houses and reducing damage to the inside of the shield tunnel.

Claims

1. A ground reinforcement structure for a shield tunnel that is superimposed in close proximity to an old building, characterized in that, include: The top support (1) is placed at the top inside the shield tunnel, and the cross-sectional shape of the top support (1) is wavy. Side plates (2) are respectively placed on the left and right sides of the top support (1), and the upper ends of the side plates (2) are respectively fixedly connected to the two ends of the top support (1); The bottom plate (3) is placed at the lower end of the side plate (2), and the upper end face of the bottom plate (3) is connected to the lower end of the side plate (2); Several trays (4) correspond one-to-one with the wavy upward protrusion grooves inside the top support (1), and the trays (4) are engaged with the inner sidewalls of the wavy upward protrusion grooves inside the top support (1). Several through holes (5) are evenly distributed on each tray (4); Several through holes (6) are evenly distributed on the side plate (2), with the end of the through hole (6) located inside the side plate (2) being higher than the end located outside the side plate (2); Several retaining rings (13) correspond one-to-one with the second through hole (6). The retaining rings (13) are placed inside the second through hole (6) and are coaxial with the second through hole (6). The retaining rings (13) are fixedly connected to the inner wall of the second through hole (6).

2. The ground reinforcement structure for a shield tunnel adjacent to an old building according to claim 1, wherein the ground reinforcement structure is characterized in that, The top support (1) is provided with several through holes (7), which are evenly distributed in the wavy, upward-protruding groove inside the top support (1) and are located on the outside of the support plate (4).

3. The foundation reinforcement structure for a shield tunnel adjacent to old buildings as described in claim 2, characterized in that, The top support (1) has two slots (8) in the wavy, upward-protruding groove. The slots (8) are respectively placed at both ends of the support plate (4). The two ends of the support plate (4) are placed in the slots (8). The support plate (4) is engaged with the top support (1) through the slots (8).

4. The foundation reinforcement structure for a shield tunnel adjacent to old buildings as described in claim 1, characterized in that, The side plate (2) has several inserts (9) on its outer side surface. The inserts (9) correspond one-to-one with the through hole (6) and are coaxial with the through hole (6). The diameter of the lower end of the insert (9) is smaller at the bottom and larger at the top.

5. The foundation reinforcement structure for a shield tunnel adjacent to old buildings as described in claim 1, characterized in that, The upper surface of the base plate (3) is provided with two protrusions (10), which are respectively placed below the two side plates (2). The protrusions (10) are fixedly connected to the base plate (3). The lower surface of the side plate (2) is provided with a second slot (11), which corresponds to the protrusions (10) one by one. The protrusions (10) are placed in the second slot (11), and the base plate (3) is engaged with the side plate (2) through the cooperation of the second slot (11) and the protrusions (10).

6. The foundation reinforcement structure for a shield tunnel adjacent to old buildings as described in claim 5, characterized in that, The base plate (3) is provided with several through holes (12), and the through holes (12) are evenly distributed on the base plate (3).

7. The foundation reinforcement structure for a shield tunnel adjacent to old buildings as described in claim 3, characterized in that, A baffle (14) is provided on one side of the top support (1). The inner side of the baffle (14) is in contact with one end of the support plate (4). The baffle (14) covers one side of all the wavy, upwardly protruding grooves on the top support (1). The baffle (14) is fixedly connected to the top support (1).

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