Shield receiving device and using method

Abstract

The invention discloses a shield receiving device and a using method, and belongs to the technical field of shield construction, the shield receiving device comprises a bottom support, the bottom support comprises a plurality of stacked steel blocks, and every two longitudinally adjacent steel blocks are fixedly connected through a bolt; the steel block at the bottom is fixedly connected with the ground; the steel cylinder is located between the shield hole and the bottom support and placed on the ground; the two brackets are symmetrically connected and arranged at the upper ends of the steel cylinder and the bottom support; the supporting steel plate is arranged between the bracket and the bottom support so as to adjust the elevation of the bracket to be consistent with the height of the shield outlet; the inclined strut is obliquely arranged at the end, away from the shield hole, of the bottom support, one end of the inclined strut is fixedly connected with the steel block of the bottom support, and the other end of the inclined strut is connected with an existing structure below in a welded mode. All the structural members are rigidly connected through welding or bolts, and the overall strength and stability are guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of shield construction, and in particular relates to a shield receiving device and a use method thereof. Background Art

[0002] Shield machines are commonly used in urban underground tunnel and pipeline construction. They have the characteristics of fast construction speed, no influence of climate, and no impact on ground traffic during excavation. Shield tunneling is a construction technology with broad application prospects. However, after the shield machine is completed, a certain space is needed to receive it. Due to its heavy weight, the shield receiving operation is risky and difficult, which is a key process in shield construction.

[0003] Common shield receiving devices are suitable for fixing the receiving bracket on the receiving well ground when the elevation difference between the receiving well floor and the bottom elevation of the shield machine is small, and running the shield machine to the receiving bracket after the excavation is completed. When dealing with the situation where the elevation difference between the receiving well floor and the bottom elevation of the shield machine is large, it is necessary to build a support structure on the receiving ground, set the receiving bracket on a temporary support structure, and let the temporary support structure bear the vertical deadweight of the shield equipment and the horizontal load of the shield machine when it exits the hole.

[0004] Therefore, how to provide a shield receiving device with a stable structure that can solve the height difference between the receiving shaft bottom plate and the shield equipment is one of the technical problems that urgently need to be solved in this field. Summary of the invention

[0005] In order to overcome the deficiencies in the prior art, the present invention aims to provide a shield receiving device which has a stable structure and can solve the height difference between the receiving shaft bottom plate and the shield equipment.

[0006] In order to achieve the purpose of the present invention, the technical solution adopted by the present invention is:

[0007] A shield receiving device, comprising:

[0008] A bottom support, wherein the bottom support comprises a plurality of stacked steel blocks, wherein two longitudinally adjacent steel blocks are fixedly connected by bolts; and the steel block at the bottom is fixedly connected to the ground;

[0009] A steel cylinder, located between the shield tunnel opening and the bottom support, and placed on the ground;

[0010] Two brackets are symmetrically connected, and the two brackets are arranged at the upper ends of the steel cylinder and the bottom support;

[0011] A support steel plate, the support steel plate is arranged between the bracket and the bottom support to adjust the elevation of the bracket to be consistent with the height of the shield exit;

[0012] The diagonal brace is obliquely arranged at one end of the bottom support away from the shield tunnel opening, wherein one end of the diagonal brace is fixedly connected to the steel block of the bottom support, and the other end is welded to the existing structure below.

[0013] Furthermore, each of the steel blocks comprises:

[0014] Two layers of horizontal steel plates are arranged one above the other, and the two layers of horizontal steel plates are correspondingly provided with first connecting holes;

[0015] Multiple longitudinal steel plates are arranged crosswise in horizontal and vertical directions, and the multiple longitudinal steel plates are located between two layers of steel plates and are welded together; a second connecting hole is arranged on the longitudinal steel plate near the edge side.

[0016] Furthermore, it also includes a connecting rod, which is arranged on a side of the bottom support close to the diagonal brace, and both ends of the connecting rod are fixedly connected to the second connecting holes on the longitudinal steel plate close to one side of the diagonal brace.

[0017] Furthermore, the main body of the connecting rod is a hollow square steel pipe, and spade-shaped joints are welded at both ends of the hollow square steel pipe. The spade-shaped joints are provided with bolt holes connected to the steel block.

[0018] Furthermore, the bracket comprises:

[0019] A bracket body, wherein the bracket body is an I-beam, and the wing plate of the bracket body is reinforced by ribs;

[0020] The top of the bracket body is provided with a curved receiving surface according to the diameter of the shield machine;

[0021] A longitudinal structural steel, a first end of which is vertically connected to one side of the bracket body;

[0022] A transverse structural steel, the second end of which is fixedly connected to the first end of the longitudinal structural steel, and the transverse structural steel is arranged parallel to the bracket body; a connecting plate with bolt holes is arranged at the transverse end of the transverse structural steel for connecting with the transverse structural steel of the bracket on the other side;

[0023] An oblique structural steel, wherein the connection between the transverse structural steel and the longitudinal structural steel is fixedly connected to the first end of the oblique structural steel, and the second end of the oblique structural steel is fixedly connected to an end of the bracket body away from the longitudinal structural steel.

[0024] Furthermore, the extension direction of the bracket body is consistent with the running direction of the shield, and the elevation is consistent with the height of the shield outlet; the length of the bracket as a support on the steel block is not less than the overall length of the shield.

[0025] Furthermore, the diagonal brace includes a first steel section and a second steel section set at an angle, the first end of the first steel section is welded to the first end of the second steel section, the side surface of the first steel section away from the second steel section and the first end of the second steel section are welded to the steel block of the bottom support away from the shield tunnel opening, and the second end of the first steel section and the second end of the second steel section are welded to the existing structure.

[0026] Furthermore, the second end portion of the first steel section and the second end portion of the second steel section are both welded and fixed to the pre-buried steel plate under the ground; and the steel block at the bottom is fixedly connected to the ground through embedded reinforcement.

[0027] A method for using a shield receiving device is the method for using the shield receiving device described in any one of the above items, and the method for using comprises:

[0028] S10. Install and fix the lowest steel blocks and steel cylinders on the ground, and gradually complete the construction of the upper steel block combination to a height slightly lower than the design elevation, and make up the shortfall with supporting steel plates; the longitudinal steel blocks of the bottom support are connected by bolts, and the transverse steel blocks are connected by connecting rods;

[0029] S20. After the installation of the supporting steel plate is completed, a fixed bracket is installed on the top. The extension direction of the bracket is consistent with the running direction of the shield, and the elevation is consistent with the height of the shield exit. The length of the bracket as a support on the steel block is not less than the overall length of the shield, and the diagonal brace is fixed at the far end;

[0030] S30, when the shield equipment comes out of the tunnel, it runs to the top of the bracket on the top of the steel cylinder, and relies on the steel cylinder to bear the horizontal impact load and vertical gravity load;

[0031] S40, after the shield equipment enters the bracket, it is gradually advanced from the bracket at the top of the steel cylinder to the upper part of the bracket at the top of the bottom support; when it is completely stopped at the upper part of the bracket at the top of the steel block of the bottom support, the steel cylinder can be dismantled and recycled;

[0032] S50. After the shield equipment has completely stopped, subsequent operations such as lifting, pushing or lowering layer by layer can be carried out.

[0033] Beneficial effects:

[0034] 1. Each structural member in the present invention is rigidly connected by welding or bolts to ensure the overall strength and stability;

[0035] 2. After the shield equipment exits the hole, the steel cylinder promptly absorbs the lateral and longitudinal loads of the shield equipment to ensure structural stability, and the far-end diagonal brace ensures the lateral stability of the overall structure;

[0036] 3. The length of the receiving bracket on the steel block composite structure shall not be less than the overall length of the shield equipment. After the receiving is completed, the shield equipment is parked on the top of the steel block support as a whole, and the steel cylinder is dismantled and recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0038] Figure 2 It is a schematic diagram of a structural steel block of the present invention;

[0039] Figure 3 It is a schematic diagram of a steel cylinder of the present invention;

[0040] Figure 4 A schematic diagram of a bracket of the present invention;

[0041] Figure 5 It is a schematic diagram of the diagonal bracing device of the present invention;

[0042] Figure 6 It is a schematic diagram of the connecting rod of the present invention;

[0043] Figure 7 This is a schematic diagram of a steel block transverse connecting rod of the present invention;

[0044] Figure 8 This is a schematic diagram of the longitudinal connecting rod of the steel block of the present invention;

[0045] In the figure: 1. steel block; 2. steel cylinder; 3. supporting steel plate; 4. bracket; 5. diagonal brace; 6. connecting rod. DETAILED DESCRIPTION

[0046] The present invention provides a shield receiving device and a construction method thereof. The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings to make it easier to understand and grasp.

[0047] Example 1

[0048] refer to Figure 1 - Figure 8 , a shield receiving device, comprising:

[0049] Bottom support, the bottom support includes a plurality of stacked steel blocks 1, two longitudinally adjacent steel blocks 1 are fixedly connected by bolts; the steel block 1 at the bottom is fixedly connected to the ground;

[0050] The steel cylinder 2 is located between the shield tunnel opening and the bottom support and is placed on the ground;

[0051] Two brackets 4 are symmetrically connected and arranged, and the two brackets 4 are arranged at the upper ends of the steel cylinder 2 and the bottom support;

[0052] A support steel plate 3 is provided between the bracket 4 and the bottom support to adjust the height of the bracket 4 to be consistent with the height of the shield exit;

[0053] The diagonal brace 5 is obliquely arranged at one end of the bottom support away from the shield tunnel opening, wherein one end of the diagonal brace 5 is fixedly connected to the steel block 1 of the bottom support, and the other end is welded to the existing structure below.

[0054] In this embodiment, each steel block 1 comprises:

[0055] Two layers of horizontal steel plates are arranged one above the other, and the two layers of horizontal steel plates are correspondingly provided with first connecting holes;

[0056] Multiple longitudinal steel plates are arranged crosswise in horizontal and vertical directions, and the multiple longitudinal steel plates are located between two layers of steel plates and are welded together to form a second connection hole near the edge side of the longitudinal steel plate.

[0057] Specifically, two upper and lower adjacent steel blocks 1 are fixedly connected by bolts passing through the first connection holes.

[0058] The shield receiving device provided in this embodiment also includes a connecting rod 6, which is arranged on one side of the bottom support close to the diagonal brace 5, and the two ends of the connecting rod 6 are respectively fixedly connected to the second connecting holes on the longitudinal steel plate on one side of the diagonal brace 5.

[0059] In this embodiment, the main body of the connecting rod 6 is a hollow square steel pipe, and spade-shaped joints are welded at both ends of the hollow square steel pipe. Bolt holes connected to the steel block 1 are provided on the spade-shaped joints.

[0060] In this embodiment, the bracket 4 includes:

[0061] The bracket body is an I-beam, and the wing plate of the bracket body is reinforced by ribs;

[0062] The top of the bracket body is provided with a curved receiving surface according to the diameter of the shield machine;

[0063] A longitudinal structural steel, a first end of which is vertically connected to one side of the bracket body;

[0064] A transverse structural steel, the second end of which is fixedly connected to the first end of the longitudinal structural steel, and the transverse structural steel is arranged parallel to the bracket body; a connecting plate with bolt holes is arranged at the transverse end of the transverse structural steel, which is used to connect with the transverse structural steel of the bracket 4 on the other side;

[0065] An oblique structural steel, the connection between the transverse structural steel and the longitudinal structural steel is fixedly connected to the first end of the oblique structural steel, and the second end of the oblique structural steel is fixedly connected to an end of the bracket body away from the longitudinal structural steel.

[0066] Specifically, the extension direction of the bracket body is consistent with the running direction of the shield, and the elevation is consistent with the height of the shield exit; the length of the bracket 4 as a support on the steel block 1 is not less than the overall length of the shield.

[0067] In this embodiment, the diagonal brace 5 includes a first steel section and a second steel section set at an angle, the first end of the first steel section is welded to the first end of the second steel section, the side surface of the first steel section away from the second steel section and the first end of the second steel section are welded to the steel block on the bottom support side away from the shield tunnel opening, and the second end of the first steel section and the second end of the second steel section are both welded to the existing structure.

[0068] Specifically, the second end portion of the first steel section and the second end portion of the second steel section are both welded and fixed to the pre-buried steel plate under the ground; the steel block 1 at the bottom is fixedly connected to the ground through embedded reinforcement.

[0069] In this embodiment, each connecting bolt is a steel bolt.

[0070] Example 2

[0071] A method for using a shield receiving device is the method for using the shield receiving device provided in Example 1, and the method for using includes:

[0072] S10, the lowest steel block 1 and the steel cylinder 2 are installed and fixed on the ground, and the upper steel block 1 combination is gradually built to a height slightly lower than the design elevation, and the insufficient part is supplemented by the supporting steel plate 3; the longitudinal steel blocks of the bottom support are connected by bolts, and the transverse steel blocks are connected by connecting rods 6;

[0073] S20, after the installation of the support steel plate 3 is completed, a fixed bracket 4 is installed on the top, the extension direction of the bracket 4 is consistent with the running direction of the shield, the elevation is consistent with the height of the shield exit, the length of the bracket 4 as a support on the steel block 1 is not less than the overall length of the shield, and the diagonal brace 5 is fixed at the far end;

[0074] S30, when the shield equipment comes out of the hole, it runs to the top of the bracket 4 on the top of the steel cylinder 2, and relies on the steel cylinder 2 to bear the horizontal impact load and the vertical gravity load;

[0075] S40, after the shield equipment enters the bracket 4, it is gradually advanced from the bracket 4 at the top of the steel cylinder 2 to the upper part of the bracket 4 at the top of the bottom support; when it is completely stopped at the upper part of the bracket 4 at the top of the steel block 1 supported at the bottom, the steel cylinder 2 can be dismantled and recycled;

[0076] S50. After the shield equipment has completely stopped, subsequent operations such as lifting, pushing or descending layer by layer can be carried out.

[0077] The above fully describes the technical solution of the present invention. It should be noted that the specific implementation of the present invention is not limited to the above description. All technical solutions formed by ordinary technicians in the field using equivalent or equivalent transformations in structure, method or function based on the spirit of the present invention fall within the protection scope of the present invention.

Claims

1. A shield receiving device, characterized in that: include: A bottom support, the bottom support comprising a plurality of stacked steel blocks (1), wherein two longitudinally adjacent steel blocks (1) are fixedly connected by bolts; and the steel block (1) at the bottom is fixedly connected to the ground; A steel cylinder (2) is located between the shield tunnel opening and the bottom support and is placed on the ground; Two brackets (4) are symmetrically connected and arranged, and the two brackets (4) are arranged at the upper ends of the steel cylinder (2) and the bottom support; A support steel plate (3), wherein the support steel plate (3) is arranged between the bracket (4) and the bottom support to adjust the elevation of the bracket (4) to be consistent with the height of the shield exit; A diagonal brace (5) is obliquely arranged at one end of the bottom support away from the shield tunnel opening, wherein one end of the diagonal brace (5) is fixedly connected to the steel block (1) of the bottom support, and the other end is welded to the existing structure below.

2. The shield receiving device according to claim 1, characterized in that: Each of the steel blocks (1) comprises: Two layers of horizontal steel plates are arranged one above the other, and the two layers of horizontal steel plates are correspondingly provided with first connecting holes; Multiple longitudinal steel plates are arranged crosswise in horizontal and vertical directions, and the multiple longitudinal steel plates are located between two layers of steel plates and are welded together; a second connecting hole is arranged on the longitudinal steel plate near the edge side.

3. The shield receiving device according to claim 2, characterized in that: It also includes a connecting rod (6), which is arranged on a side of the bottom support close to the diagonal brace (5), and the two ends of the connecting rod (6) are respectively fixedly connected to the second connecting holes on the longitudinal steel plate on one side of the diagonal brace (5).

4. The shield receiving device according to claim 3, characterized in that: The main body of the connecting rod (6) is a hollow square steel pipe, and spade-shaped joints are welded at both ends of the hollow square steel pipe. Bolt holes connected to the steel block (1) are provided on the spade-shaped joints.

5. The shield receiving device according to claim 1, characterized in that: The bracket (4) comprises: A bracket body, wherein the bracket body is an I-beam, and the wing plate of the bracket body is reinforced by ribs; The top of the bracket body is provided with a curved receiving surface according to the diameter of the shield machine; A longitudinal structural steel, a first end of which is vertically connected to one side of the bracket body; a transverse structural steel, the second end of which is fixedly connected to the first end of the longitudinal structural steel, and the transverse structural steel is arranged parallel to the bracket body; a connecting plate with bolt holes is arranged at the transverse end of the transverse structural steel for connecting to the transverse structural steel of the bracket (4) on the other side; An oblique structural steel, wherein the connection between the transverse structural steel and the longitudinal structural steel is fixedly connected to the first end of the oblique structural steel, and the second end of the oblique structural steel is fixedly connected to an end of the bracket body away from the longitudinal structural steel.

6. The shield receiving device according to claim 5, characterized in that: The extension direction of the bracket body is consistent with the running direction of the shield, and the elevation is consistent with the height of the shield exit; The length of the bracket (4) on the steel block (1) as a support is not less than the overall length of the shield.

7. The shield receiving device according to claim 1, characterized in that: The diagonal brace (5) comprises a first steel section and a second steel section arranged at an angle, wherein the first end of the first steel section is welded to the first end of the second steel section, the side surface of the first steel section away from the second steel section and the first end of the second steel section are welded to the steel block of the bottom support away from the shield tunnel opening, and the second end of the first steel section and the second end of the second steel section are welded to the existing structure.

8. The shield receiving device according to claim 7, characterized in that: The second end portions of the first steel section and the second end portions of the second steel section are both welded and fixed to the pre-buried steel plate below the ground; the steel block (1) located at the bottom is fixedly connected to the ground via embedded reinforcement.

9. A method for using a shield receiving device, characterized in that: A method for using the shield receiving device according to any one of claims 1 to 8, the method comprising: S10, the lowest steel block (1) and the steel cylinder (2) are installed and fixed on the ground, and the upper steel block (1) is gradually assembled to a height slightly lower than the design elevation, and the insufficient part is supplemented by the supporting steel plate (3); the longitudinal steel blocks of the bottom support are connected by bolts, and the transverse steel blocks are connected by connecting rods (6); S20. After the support steel plate (3) is installed, a fixed bracket (4) is installed on the top. The extension direction of the bracket (4) is consistent with the running direction of the shield, and the elevation is consistent with the height of the shield exit. The length of the bracket (4) as a support on the steel block (1) is not less than the overall length of the shield. A diagonal brace (5) is fixed at the far end. S30, when the shield equipment comes out of the tunnel opening, it runs to the top of the bracket (4) on the top of the steel cylinder (2), and relies on the steel cylinder (2) to bear the horizontal impact load and the vertical gravity load; S40, after the shield equipment enters the bracket (4), it is gradually advanced from the bracket (4) at the top of the steel cylinder (2) to the upper part of the bracket (4) at the top of the bottom support; when it is completely stopped at the upper part of the bracket (4) at the top of the steel block (1) at the bottom support, the steel cylinder (2) can be dismantled and recycled; S50. After the shield equipment has completely stopped, subsequent operations such as lifting, pushing or lowering layer by layer can be carried out.

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