Method for hoisting corrugated steel plate in tunnel

Abstract

The invention relates to the field of installation of corrugated steel plates in a tunnel, in particular to a method for hoisting corrugated steel plates in the tunnel, which comprises the following steps of: sequentially lifting and splicing a plurality of corrugated steel plates by using mechanical equipment according to a sequence from the bottom to the top of the tunnel; the corrugated steel plate is slidably arranged on the mechanical equipment along the arc direction; a guide inclined plate is fixedly arranged at one end of the corrugated steel plate and located on the concave side of the corrugated steel plate. The inclined guide plates are positioned at the top ends of the corrugated steel plates and point to the ground; in the process that the corrugated steel plates are lifted and assembled through the mechanical equipment, the bottom ends of the corrugated steel plates on the mechanical equipment abut against the upper side faces of the inclined guide plates of the corrugated steel plates fixed to the inner wall of the tunnel, and meanwhile the corrugated steel plates are pushed to approach the inner wall of the tunnel till the ends of every two adjacent corrugated steel plates abut against each other. By means of the scheme, in the splicing process of the adjacent corrugated steel plates, the ends of the adjacent corrugated steel plates can be rapidly connected together in an abutting mode, the positions of the ends of the corrugated steel plates do not need to be repeatedly adjusted, and construction efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of corrugated steel plate installation in tunnels, and specifically to a method for hoisting corrugated steel plates in tunnels. Background Technology

[0002] During tunnel construction or maintenance, a layer of corrugated steel plates needs to be fixed to the inner wall of the tunnel. These corrugated steel plates are assembled from multiple arc-shaped pieces, covering the entire inner wall of the tunnel. Fixing corrugated steel plates to the inner wall of the tunnel improves the protective effect on the tunnel walls, and at the same time, the corrugated steel plates, located on the inner wall, contribute to the aesthetics of the tunnel.

[0003] However, a corrugated steel sheet is quite heavy, typically weighing 100-300 kilograms. The installation process, which involves manually attaching the corrugated steel sheet to the tunnel wall, is difficult and labor-intensive.

[0004] Using mechanical equipment to lift corrugated steel sheets can assist in their installation, reducing difficulty and labor intensity. However, when splicing adjacent corrugated steel sheets, mechanical equipment cannot achieve precise splicing. Interference may occur at the ends of adjacent sheets (the ends may overlap), or while the ends may not interfere, the gap between them may be large. Therefore, the lifting position of the corrugated steel sheets needs to be repeatedly adjusted during splicing to ensure that the ends of adjacent sheets properly abut against each other, preventing overlap or excessive gaps. This repeated adjustment of the lifting position is cumbersome and reduces construction efficiency. Summary of the Invention

[0005] The present invention aims to provide a method for hoisting corrugated steel plates in tunnels, so that during the assembly of adjacent corrugated steel plates, the ends of adjacent corrugated steel plates can be quickly brought together without repeatedly adjusting the end positions of the corrugated steel plates, thereby improving construction efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a method for hoisting corrugated steel plates in a tunnel, which uses mechanical equipment to lift and assemble multiple corrugated steel plates in sequence from the bottom to the top of the tunnel. All corrugated steel plates are arc-shaped and are slidably mounted on the mechanical equipment along their arc direction; a guide plate is fixed at one end of the corrugated steel plate, and the guide plate is located on the concave side of the corrugated steel plate; The guide plate of the corrugated steel plate, which is fixed to the inner wall of the tunnel, is located at the top of the corrugated steel plate and points towards the ground. During the lifting and assembly of the second and subsequent corrugated steel plates above the ground, the mechanical equipment brings the bottom end of the corrugated steel plate on the mechanical equipment into contact with the upper side of the guide inclined plate of the corrugated steel plate already fixed to the tunnel wall. At the same time, the mechanical equipment pushes the corrugated steel plate closer to the tunnel wall. The bottom end of the corrugated steel plate on the mechanical equipment slides on the upper side of the guide inclined plate of the corrugated steel plate already fixed to the tunnel wall. The corrugated steel plate on the mechanical equipment slides upward on the mechanical equipment until the bottom end of the corrugated steel plate on the mechanical equipment abuts against the top end of the corrugated steel plate already fixed to the tunnel wall.

[0007] The principle and advantages of this scheme are as follows: During the lifting and assembly of the second and subsequent corrugated steel plates above the ground, the bottom end of the corrugated steel plate on the mechanical equipment abuts against the top guide plate of the corrugated steel plate already fixed to the inner wall of the tunnel below. The mechanical equipment then pushes the corrugated steel plate towards the inner wall of the tunnel. The guide plate guides the corrugated steel plate on the mechanical equipment, causing it to move upward under the action of the guide plate. Finally, the bottom end of the corrugated steel plate on the mechanical equipment slides upward to the top end of the corrugated steel plate below it, and the bottom end of the corrugated steel plate on the mechanical equipment abuts against the top end of the corrugated steel plate below it. In this way, the two corrugated steel plates are assembled.

[0008] Using this method, when the corrugated steel plate on the mechanical equipment approaches the inner wall of the tunnel, it is only necessary to make the corrugated steel plate on the mechanical equipment abut against the guide plate of the corrugated steel plate already fixed to the inner wall of the tunnel below. As the corrugated steel plate on the mechanical equipment is pushed towards the inner wall of the tunnel, the bottom end of the corrugated steel plate on the mechanical equipment and the top end of the corrugated steel plate already fixed to the inner wall of the tunnel automatically abut together. Compared with the existing technology, even if the bottom end of the corrugated steel plate on the mechanical equipment partially overlaps with the top end of the corrugated steel plate below during the process of pushing the corrugated steel plate towards the inner wall of the tunnel, the ends of the two corrugated steel plates can be automatically abut together. At the beginning of the lifting, it is not necessary to precisely splice the ends of the two corrugated steel plates together. Compared to existing technologies, this solution makes it easier to precisely align the ends of two corrugated steel plates by bringing the bottom of the corrugated steel plate on the mechanical equipment against the guide slope. This allows the ends of adjacent corrugated steel plates to quickly come together without the need to repeatedly adjust the position of the ends of the corrugated steel plates on the mechanical equipment, thus improving construction efficiency.

[0009] Preferably, as an improvement, the corrugated steel plate is provided with strip-shaped holes, which are arranged along the arc direction of the corrugated steel plate; the mechanical equipment is detachably connected with guide posts for passing through the strip-shaped holes, and there are at least two guide posts; the distance between any two guide posts is less than the distance between the two ends of the strip-shaped hole.

[0010] Therefore, the corrugated steel plate is detachably connected to the mechanical equipment via guide posts that pass through the slotted holes in the corrugated steel plate, thus enabling the corrugated steel plate to be installed on the mechanical equipment. Since the distance between any two guide posts is less than the distance between the two ends of the slotted hole, the guide posts and the inner walls of the slotted holes will not jam. Through the cooperation of the guide posts and the slotted holes, the corrugated steel plate can slide on the mechanical equipment.

[0011] Preferably, as an improvement, the mechanical equipment is an excavator, and a support is fixedly provided on the back of the excavator's bucket, with a corrugated steel plate slidingly mounted on the support.

[0012] Thus, the corrugated steel plate is lifted by raising and lowering the excavator's bucket. The support is installed on the back of the bucket, and the corrugated steel plate is mounted on the support. The support is designed to facilitate the connection between the corrugated steel plate and the bucket.

[0013] Preferably, as an improvement, a connecting plate is fixedly connected to the end of the support away from the bucket. The connecting plate has a fixing hole, and the guide post passes through the fixing hole and is detachably connected to the connecting plate.

[0014] Thus, by passing the guide post through the fixing hole and detachably connecting it to the connecting plate, the guide post is fixed to the connecting plate.

[0015] Preferably, as an improvement, the guide post is a bolt, the head of which is located on the convex side of the corrugated steel plate, and a nut is threaded onto the bolt. The nut rests against the connecting plate, and the connecting plate is located between the nut and the corrugated steel plate.

[0016] Thus, by tightening the nut onto the bolt, a detachable connection between the guide column and the connecting plate is achieved. After the guide column is fixed to the connecting plate, the head of the nut and the connecting plate clamp the corrugated steel plate, thereby fixing the corrugated steel plate to the support and preventing it from detaching. After the corrugated steel plate is fixed to the tunnel wall, the nut is unscrewed, and the bucket moves the support away from the tunnel wall, thus detaching the guide column from the support.

[0017] Preferably, as an improvement, the fixing hole is a round hole.

[0018] Preferably, as an improvement, the tunnel inner wall is divided into left and right sides, and the corrugated steel plates on both sides are lifted and assembled in order from the bottom to the top of the tunnel.

[0019] Therefore, the corrugated steel plates on the left side of the tunnel are installed from bottom to top, and the corrugated steel plates on the right side of the tunnel are also installed from bottom to top. This ensures that the ends of adjacent corrugated steel plates on both sides of the tunnel can be quickly joined together.

[0020] Preferably, as an improvement, the length of the guide plate is 10-20cm.

[0021] Preferably, as an improvement, the included angle between the guide plate and the corrugated steel plate is 60°-80°.

[0022] Preferably, as an improvement, the number of corrugated steel plates circumferentially on the inner wall of the tunnel is 8-20. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a corrugated steel plate installed on an excavator bucket.

[0024] Figure 2 This is a schematic diagram of corrugated steel plates installed inside the tunnel.

[0025] Figure 3 for Figure 2 A schematic diagram of the structure of the corrugated steel plate #2.

[0026] Figure 4 for Figure 2 A schematic diagram of the structure of the corrugated steel plate #9.

[0027] Figure 5 This is a schematic diagram showing the installation process of corrugated steel plate #2 in conjunction with corrugated steel plate #1.

[0028] Figure 6 This is a schematic diagram showing a corrugated steel plate mounted on a connecting plate using bolts. Detailed Implementation

[0029] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: bucket 1, corrugated steel plate 2, bracket 3, strip hole 4, guide post 5, guide ramp 6, tunnel 7, dashed line 8, nut 9.

[0030] The basic implementation examples are as follows: Figures 1-6 The image shows a method for hoisting corrugated steel plates inside a tunnel. Mechanical equipment is used to sequentially lift and assemble multiple arc-shaped corrugated steel plates 2, from the bottom to the top of the tunnel 7. Combined with... Figure 2 As shown, after the corrugated steel plates 2 of the inner wall of tunnel 7 are spliced ​​and fixed to the inner wall of tunnel 7, the number of circumferential corrugated steel plates 2 on the inner wall of tunnel 7 is 8-20. This embodiment uses 10 plates as an example for illustration. Figure 2 The corrugated steel plates 2 are numbered and named sequentially from left to right (#1-#10). Figure 2The vertical dotted line 8 divides tunnel 7 into left and right sections. The corrugated steel plates 2 in the left and right sections are basically symmetrical about the dotted line 8. The corrugated steel plates 2 on the left are #1-#5, and those on the right are #6-#10. Since the corrugated steel plates 2 are lifted and assembled sequentially from the bottom to the top of tunnel 7, the corrugated steel plates 2 on the left are lifted and assembled in the order of #1-#5, while the corrugated steel plates 2 on the right are lifted and assembled in the order of #10-#6.

[0031] Combination Figure 1 and Figure 6 As shown, the mechanical equipment in this embodiment is an excavator. A bracket 3 is welded and fixed to the back of the excavator's bucket 1. A corrugated steel plate 2 is slidably mounted on the bracket 3 along its arc direction. The specific sliding method of the corrugated steel plate 2 and the bracket 3 is as follows: a connecting plate is welded and fixedly connected to the end of the bracket 3 away from the bucket 1. The connecting plate has at least two fixing holes, which are round holes. The corrugated steel plate 2 has a strip hole 4, which is set along the arc direction of the corrugated steel plate 2. A guide post 5 for passing through the strip hole 4 is detachably connected to the connecting plate. In this embodiment, the guide post 5 is a bolt. The head of the bolt is located on the convex side of the corrugated steel plate 2 and limits the convex side of the corrugated steel plate 2. The guide post 5 passes through the strip hole 4 and is inserted into the fixing hole. Since there are at least two fixing holes, there are at least two guide posts 5 in this embodiment. Both guide posts 5 pass through the strip hole 4, and both guide posts 5 pass through the fixing holes on the connecting plate. A nut 9 is threaded onto the guide post 5, and the nut 9 abuts against the side of the connecting plate away from the corrugated steel plate 2. In this embodiment, there are two guide posts 5 and two fixing holes. The distance between the two guide posts 5 is less than the distance between the two ends of the strip hole 4, that is, the distance between the two guide posts 5 is less than the length of the strip hole 4. Thus, through the cooperation of the guide posts 5 and the strip hole 4, the end of the strip hole 4 and the guide post 5 will not be tightly pressed together, thereby allowing the corrugated steel plate 2 to have room to move on the bracket 3. In this embodiment, the nut 9 should not be tightened too much to avoid the bolt head and the connecting plate clamping the corrugated steel plate too tightly, so that the corrugated steel plate can slide along its arc direction.

[0032] In this embodiment, a guide plate 6 is fixed to one end of the corrugated steel plate 2 (e.g., integrally fixed or fixed by bolts, screws, or other connectors). The guide plate 6 is located on the concave side of the corrugated steel plate 2. The length of the guide plate 6 is 10-20cm. The included angle between the guide plate 6 and the corrugated steel plate 2 is 60°-80°.

[0033] Combination Figure 2 As shown, after the corrugated steel plate 2 is fixed to the inner wall of tunnel 7, the guide plate 6 of the corrugated steel plate 2 fixed to the inner wall of tunnel 7 is located at the top of the corrugated steel plate 2 and the guide plate 6 points to the ground. (Guide plates 6 are not provided on corrugated steel plates #5 and #6 in the figure) The excavator bucket 1 first lifts and attaches the two corrugated steel plates 2 (#1 and #10) to the inner wall of tunnel 7. Then, chemical anchors are used to fix the two corrugated steel plates 2 to the inner wall of tunnel 7. After fixing, the nut 9 is unscrewed, causing the bucket 1 to move the support 3 away from the inner wall of tunnel 7. The connecting plate separates from the corrugated steel plates 2, and the two corrugated steel plates 2 (#1 and #10) are fixed to the inner wall of tunnel 7. The guide post 5 remains on the corrugated steel plates 2.

[0034] Then, the corrugated steel plates 2 are assembled onto the inner wall of tunnel 7 sequentially from bottom to top. That is, the left side of tunnel 7 is assembled and fixed in the order of #1-#5, and the right side of tunnel 7 is assembled and fixed in the order of #10-#6. During the lifting and assembly process of the second and subsequent corrugated steel plates 2 above the ground (excluding #1 and #10), the bottom end of the corrugated steel plate 2 on the bucket 1 is brought into contact with the upper side of the guide plate 6 of the corrugated steel plate 2 already fixed on the inner wall of tunnel 7. At the same time, the bucket 1 pushes the corrugated steel plate 2 closer to the inner wall of tunnel 7. The bottom end of the corrugated steel plate 2 on the bucket 1 slides on the upper side of the guide plate 6 of the corrugated steel plate 2 already fixed on the inner wall of tunnel 7. The corrugated steel plate 2 on the bucket 1 slides on the mechanical equipment until the bottom end of the corrugated steel plate 2 on the bucket 1 abuts against the top end of the corrugated steel plate 2 already fixed on the inner wall of tunnel 7. After the corrugated steel plate 2 is pushed into place by the bucket 1, chemical anchors are used to fix the corrugated steel plate 2 to the inner wall of the tunnel 7, and the nut 9 is removed to separate the bracket 3 on the bucket 1 from the corrugated steel plate 2.

[0035] Combination Figure 5 As shown, we will use #1 and #2 corrugated steel plates 2 as examples to illustrate the specific applications. Figure 5 The corrugated steel plate 2 of #1 has been fixed to the inner wall of tunnel 7. During the lifting and assembly process of the corrugated steel plate 2 of #2 using the excavator bucket 1, the lifting process... Figure 5 The top of the strip hole 4, indicated by the dashed line, abuts against the guide post 5. Then, the bottom end of the #2 corrugated steel plate 2, indicated by the dashed line on the bucket 1, abuts against the upper side of the guide inclined plate 6 of the #1 corrugated steel plate 2, which is already fixed to the inner wall of the tunnel 7. At the same time, the bucket 1 pushes the corrugated steel plate 2, indicated by the dashed line, closer to the inner wall of the tunnel 7. The bottom end of the #2 corrugated steel plate 2, indicated by the dashed line on the bucket 1, slides on the upper side of the guide inclined plate 6 of the #1 corrugated steel plate 2. Since the guide inclined plate 6 has a certain inclination angle, the #2 corrugated steel plate 2 on the bucket 1 slides upward on the bucket 1 support 3 (as shown in the figure, the strip hole 4 in the solid line moves upward, and the top end of the strip hole 4 no longer abuts against the guide post 5), until the bottom end of the #2 corrugated steel plate 2 on the bucket 1 abuts against the top end of the #1 corrugated steel plate 2, that is, the #2 corrugated steel plate 2 moves to... Figure 5The solid line indicates the position. After the #2 corrugated steel plate 2 is pushed into place by the bucket 1, chemical anchors are used to fix the #2 corrugated steel plate 2 to the inner wall of the tunnel 7, and the nut 9 is removed to separate the bracket 3 on the bucket 1 from the #2 corrugated steel plate 2. The installation of the other corrugated steel plates 2 is completed in this way.

[0036] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A method for hoisting corrugated steel plates in a tunnel, characterized in that: Mechanical equipment was used to lift and assemble multiple corrugated steel plates in sequence from the bottom to the top of the tunnel. All the corrugated steel plates are arc-shaped and are slidably mounted on the mechanical equipment along their arc direction; a guide plate is fixedly provided at one end of the corrugated steel plate, and the guide plate is located on the concave side of the corrugated steel plate. The guide plate of the corrugated steel plate, which is fixed to the inner wall of the tunnel, is located at the top of the corrugated steel plate and points towards the ground. During the lifting and assembly of the second and subsequent corrugated steel plates above the ground, the mechanical equipment brings the bottom end of the corrugated steel plate on the mechanical equipment into contact with the upper side of the guide inclined plate of the corrugated steel plate already fixed to the tunnel wall. At the same time, the mechanical equipment pushes the corrugated steel plate closer to the tunnel wall. The bottom end of the corrugated steel plate on the mechanical equipment slides on the upper side of the guide inclined plate of the corrugated steel plate already fixed to the tunnel wall. The corrugated steel plate on the mechanical equipment slides upward on the mechanical equipment until the bottom end of the corrugated steel plate on the mechanical equipment abuts against the top end of the corrugated steel plate already fixed to the tunnel wall.

2. The method for hoisting corrugated steel plates in a tunnel according to claim 1, characterized in that: The corrugated steel plate is provided with strip-shaped holes, which are arranged along the arc direction of the corrugated steel plate; the mechanical equipment is detachably connected with guide posts for passing through the strip-shaped holes, and there are at least two guide posts; the distance between any two guide posts is less than the distance between the two ends of the strip-shaped hole.

3. The method for hoisting corrugated steel plates in a tunnel according to claim 2, characterized in that: The mechanical equipment is an excavator, and a support is fixedly installed on the back of the excavator's bucket. The corrugated steel plate is slidably mounted on the support.

4. The method for hoisting corrugated steel plates in a tunnel according to claim 3, characterized in that: The end of the bracket away from the bucket is fixedly connected to a connecting plate. The connecting plate has a fixing hole, and the guide post passes through the fixing hole and is detachably connected to the connecting plate.

5. The method for hoisting corrugated steel plates in a tunnel according to claim 4, characterized in that: The guide post is a bolt, the head of which is located on the convex side of the corrugated steel plate. A nut is threaded onto the bolt, and the nut rests against the connecting plate, which is located between the nut and the corrugated steel plate.

6. The method for hoisting corrugated steel plates in a tunnel according to claim 4, characterized in that: The fixing hole is a round hole.

7. The method for hoisting corrugated steel plates in a tunnel according to claim 1, characterized in that: The tunnel's inner wall is divided into left and right sides, and the corrugated steel plates on both sides are lifted and assembled in order from the bottom to the top of the tunnel.

8. The method for hoisting corrugated steel plates in a tunnel according to claim 1, characterized in that: The length of the guide plate is 10-20cm.

9. The method for hoisting corrugated steel plates in a tunnel according to claim 1, characterized in that: The included angle between the guide plate and the corrugated steel plate is 60°-80°.

10. A method for hoisting corrugated steel plates in a tunnel according to claim 1, characterized in that: The number of corrugated steel plates circumferentially on the inner wall of the tunnel is 8-20.

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