Reinforced concrete tunnel lining steel plate reinforcing method

Abstract

The invention relates to the technical field of concrete tunnels, and discloses a reinforced concrete tunnel lining steel plate reinforcing method which comprises the following steps: S1, checking the inner wall of a tunnel: before people reinforce the inner wall of the tunnel, scanning and checking the inner wall of the tunnel, and marking the positions of cracks and grooves on the inner wall of the tunnel; s2, the inner wall of the tunnel is treated, the inner wall of the tunnel is cleaned, and after sundries attached to the surface of the tunnel are cleaned, filling work is conducted on grooves and cracks in the surface of the tunnel; s3, the reinforcing plate is treated, specifically, surface cleaning, surface rust removal and surface coating are conducted on the reinforcing plate, and after the reinforcing plate is treated, cutting is conducted, and the reinforcing plate is cut into a plurality of parts according to the area in the tunnel; and S4, reinforcing plates are mounted in the tunnel, after the multiple reinforcing plates are attached to the inner wall of the tunnel corresponding to the frame mounting grooves, the positions of the reinforcing plates are fixed through screws, and the adjacent fixing plates are welded together.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete tunnels, and more specifically, to a method for reinforcing the lining steel plate in a reinforced concrete tunnel. Background Art

[0002] At present, in the water intake and drainage projects of municipal pipe networks, power plants and other projects, long-distance pipe jacking or shield tunnels are widely used. The initial inner walls of the tunnels are mostly concrete structures, with a large roughness coefficient and large water loss; when contacting seawater or corrosive liquids, the durability is affected; at the same time, attachments are likely to grow on the inner walls, especially for the water intake and drainage pipes located in the sea area, and regular dry maintenance, scraping and cleaning are required. To solve the above problems, different materials have been tried as the tunnel lining, such as concrete, or polymer materials such as HDPE and PVC. During the use of the tunnel, due to various reasons (such as geological reasons or the reasons of the structural members themselves), different degrees of defects will occur: such as cracking of the main structural members or an increase in the leakage amount. To ensure the safety of the tunnel and extend its safe service life, it is necessary to promptly handle the defects that occur in the tunnel.

[0003] At present, during the process of reinforcing the lining steel plate of the tunnel, it is necessary to paste and position single steel plate strips on the inner wall of the tunnel, or apply epoxy mortar to the defects on the tunnel. Among them, during the process of pasting and positioning the steel plate strips, due to the large area of the inner wall of the tunnel, it takes a long time to carry out the positioning work, which is likely to reduce people's work efficiency. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a method for reinforcing the lining steel plate in a reinforced concrete tunnel, which has the advantage of more precise operation.

[0005] To achieve the above object, the present invention provides the following technical solution: A method for reinforcing the lining steel plate in a reinforced concrete tunnel, including the following steps:

[0006] S1: Inspect the inner wall of the tunnel. Before reinforcing the inner wall of the tunnel, first scan and inspect the inner wall of the tunnel, and mark the positions where cracks and grooves appear on the inner wall of the tunnel;

[0007] S2: Treat the inner wall of the tunnel. Carry out cleaning work on the inner wall of the tunnel. After removing the sundries attached to the tunnel surface, carry out filling work for the grooves and cracks on the tunnel surface, and fill them with epoxy mortar;

[0008] S3: Treat the reinforcement plate. Respectively carry out surface cleaning, surface rust removal and surface painting on the reinforcement plate. After treating the reinforcement plate, cut it, bend the reinforcement plate to the same radian as the inner wall of the tunnel, and cut the reinforcement plate into several pieces according to the area size inside the tunnel;

[0009] S4: Install reinforcement plates inside the tunnel. By setting up installation frames on the inner wall of the tunnel, after aligning several reinforcement plates with the frame installation slots and fitting them to the inner wall of the tunnel, fix the positions of the reinforcement plates with screws and weld the adjacent fixing plates together.

[0010] As a preferred technical solution of the present invention, in S1, install several scanners inside the tunnel, control the distance between the scanners at 2 - 3 m, scan the cracks and grooves on the inner wall of the tunnel through the scanners, and project the situation of the inner wall of the tunnel onto a visualization device. People can locate the positions of the cracks and grooves according to the display on the display screen, which is convenient for people to more intuitively observe the situation of the inner wall of the tunnel.

[0011] As a preferred technical solution of the present invention, in S2, during the process of treating the inner wall of the tunnel, pre - treat the cracks and grooves in the tunnel. After chiseling the loose and sharp parts on the inner walls of the cracks and grooves to be flat, carry out roughening and cleaning, which is convenient for people to process the surface of the inner wall of the tunnel.

[0012] As a preferred technical solution of the present invention, in S2, when cleaning the inner wall of the tunnel, for the sundries attached to the surface of the tunnel, use a tunnel cleaning machine equipped with a high - pressure water gun to wash and rinse the surface of the tunnel clean, which is convenient for people to install reinforcement plates on the surface of the tunnel.

[0013] As a preferred technical solution of the present invention, in S2, when filling the inner wall of the tunnel, fill the cracks and grooves with concrete for repair. After the concrete is completely dry, set up an installation frame on the inner wall of the tunnel. The installation frame is evenly distributed with holes, and the installation bracket fits the inner wall of the tunnel through a support structure, which is convenient for people to place the reinforcement plates.

[0014] As a preferred technical solution of the present invention, in S3, during the process of treating the reinforcement plates, the thickness of the reinforcement plates is 9 mm, the cut size is a rhombus with an area of 2 m × 1.5 m, and several holes are opened on each reinforcement plate. The opened holes are distributed at the corners of the reinforcement plates, which can increase the aesthetic degree of the reinforcement plates and fix the reinforcement plates from multiple directions.

[0015] As a preferred technical solution of the present invention, in S3, during the process of surface cleaning of the reinforcement plates, use a high - pressure water gun to clean the surface of the reinforcement plates to ensure that there are no foreign objects on the surface when the reinforcement plates are cut, improve the cleanliness of the reinforcement plates, and facilitate the reinforcement plates to fit the inner wall of the tunnel.

[0016] As a preferred technical solution of the present invention, in S3, during the process of rust removal on the surface of the reinforcement plates, use a sandblaster to remove rust on the surface of the reinforcement plates and soak them with a rust remover to remove the rust paint on the surface of the reinforcement plates.

[0017] As a preferred technical solution of the present invention, during the process of painting the surface of the reinforcement plate in S3, the surface of the rust-removed reinforcement plate is sprayed by a spray gun, the topcoat is applied on top of the primer, and finally the antiseptic is evenly applied to the arc surface of the reinforcement plate; to prevent the two sides of the reinforcement plate from being corroded and improve the service life of the reinforcement plate.

[0018] As a preferred technical solution of the present invention, in S4, the reinforcement plate is installed corresponding to the holes on the installation frame, the installation plate is quickly positioned through the holes on the installation frame, and the distance gap between each reinforcement plate is controlled at 0.4 mm. After the reinforcement plates are all fixed on the inner wall of the tunnel, the installation frame is removed, and the welding work is carried out between the reinforcement plates.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: By scanning and positioning the inner wall of the tunnel, the positions of the cracks and grooves on the inner wall of the tunnel are planned in advance, which is convenient for people to plan the installation position of the reinforcement plate and the actual situation of the tunnel in advance. Before people install the reinforcement plate on the inner wall of the tunnel, the cracks and grooves on the inner wall of the tunnel are processed in advance, and the tunnel is pretreated by cleaning and filling methods, which can effectively improve the working efficiency of the tunnel during reinforcement, save the situation where the position of the reinforcement plate is unstable due to the uneven surface of the inner wall of the tunnel, and the reinforcement plates are arranged through the evenly distributed holes on the installation frame during installation, saving the time for people to position the reinforcement plates and being able to accurately position the reinforcement plates inside the tunnel, providing convenience for people's reinforcement work and facilitating the improvement of the reinforcement work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention;. DETAILED DESCRIPTION OF THE INVENTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] As Figure 1 shown, the present invention provides a method for reinforcing the inner lining steel plate of a reinforced concrete tunnel, including the following steps:

[0023] S1: Inspect the inner wall of the tunnel. Before people reinforce the inner wall of the tunnel, they first scan and inspect the inner wall of the tunnel and mark the positions where cracks and grooves appear on the inner wall of the tunnel;

[0024] S2: Process the inner wall of the tunnel. Clean the inner wall of the tunnel. After removing the sundries attached to the surface of the tunnel, fill the grooves and cracks on the surface of the tunnel with epoxy mortar.

[0025] S3: Process the reinforcement plates. Clean the surfaces of the reinforcement plates, remove rust from the surfaces, and paint the surfaces. After processing the reinforcement plates, cut them and bend the reinforcement plates to the same radian as the inner wall of the tunnel, and cut the reinforcement plates into several pieces according to the area size inside the tunnel.

[0026] S4: Install the reinforcement plates inside the tunnel. By setting up installation frames on the inner wall of the tunnel, after fitting several reinforcement plates to the frame installation grooves corresponding to the inner wall of the tunnel, fix the positions of the reinforcement plates with screws, and weld the adjacent fixing plates together.

[0027] Among them, in S1, install several scanners inside the tunnel, control the distance between the scanners at 2 - 3m, scan the cracks and grooves on the inner wall of the tunnel through the scanners, and project the situation of the inner wall of the tunnel onto the visualization device. People locate the positions of the cracks and grooves according to the display on the display screen, which is convenient for people to more intuitively observe the situation of the inner wall of the tunnel.

[0028] Among them, in S2, during the process of processing the inner wall of the tunnel, pre - process the cracks and grooves in the tunnel. After chiseling the loose and sharp parts of the inner walls of the cracks and grooves flat, carry out roughening and cleaning, which is convenient for people to process the surface of the inner wall of the tunnel.

[0029] Among them, in S2, when cleaning the inner wall of the tunnel, for the sundries attached to the surface of the tunnel, use a tunnel cleaning machine equipped with a high - pressure water gun to wash and rinse the surface of the tunnel clean, which is convenient for people to install the reinforcement plates on the surface of the tunnel.

[0030] Among them, in S2, when filling the inner wall of the tunnel, fill the cracks and grooves with concrete for repair. After the concrete is completely dry, set up installation frames on the inner wall of the tunnel. The installation frames are evenly distributed with holes, and the installation brackets are attached to the inner wall of the tunnel through the support structure, which is convenient for people to place the reinforcement plates.

[0031] Among them, in S3, during the process of processing the reinforcement plates, the thickness of the reinforcement plates is 9mm, the cutting size is a rhombus with an area of 2m × 1.5m, and several holes are opened on each reinforcement plate. The opened holes are distributed at the corners of the reinforcement plates, which can increase the aesthetic degree of the reinforcement plates and fix the reinforcement plates from multiple directions.

[0032] Among them, during the process of surface cleaning of the reinforcement plate in S3, a high-pressure water gun is used to clean the surface of the reinforcement plate to ensure that there are no foreign objects on the surface of the reinforcement plate during cutting; the cleanliness of the reinforcement plate is improved, facilitating the reinforcement plate to fit closely with the inner wall of the tunnel.

[0033] Among them, during the process of rust removal from the surface of the reinforcement plate in S3, a sandblaster is used to remove rust from the surface of the reinforcement plate, and it is soaked with a rust remover to remove the rust paint on the surface of the reinforcement plate.

[0034] Among them, during the process of painting the surface of the reinforcement plate in S3, a spray gun is used to spray the surface of the rust-removed reinforcement plate, and a topcoat is applied over the primer. Finally, an anti-corrosive agent is evenly applied to the arc surface of the reinforcement plate; to prevent both sides of the reinforcement plate from being corroded and to extend the service life of the reinforcement plate.

[0035] Among them, in S4, the reinforcement plate is installed corresponding to the holes on the installation frame. The installation plate is quickly positioned through the holes on the installation frame, and the distance gap between each reinforcement plate is controlled at 0.4 mm. After all the reinforcement plates are fixed on the inner wall of the tunnel, the installation frame is removed, and then welding work is carried out between the reinforcement plates.

[0036] The working principle and usage process of the present invention: People first pre-treat the inner wall of the tunnel. According to the scanner, the actual situation of the inner wall of the tunnel is scanned and projected, and the image inside the tunnel is displayed on the screen through a visualization device. People can plan the position and distance of the installation frame according to the actual situation inside the tunnel. Before carrying out the reinforcement work, people first pre-treat the cracks and grooves on the inner wall of the tunnel. After the inside of the cracks and grooves is leveled, the cracks and grooves are cleaned and filled, so that these cracks and grooves will not affect the flatness of the inner wall of the tunnel. After the inner wall of the tunnel is treated, the reinforcement plate is treated. During the treatment process, the surface of the reinforcement plate needs to be cleaned, rust-removed, and painted to enhance the cleanliness and durability of the reinforcement plate, prevent the reinforcement plate from being eroded during use, extend the service life of the reinforcement plate, and install the cut reinforcement plate corresponding to the installation frame. The fixing plate is installed on the inner wall of the tunnel by means of screw fixation. After the reinforcement plate is installed, the installation bracket is removed, and then the adjacent reinforcement plates are welded together to complete the reinforcement work.

[0037] It should be noted that, in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for reinforcing the steel lining in the reinforced concrete tunnel lining, characterized in that, It includes the following steps: S1: Inspect the inner wall of the tunnel. Before strengthening the inner wall of the tunnel, first scan and inspect the inner wall of the tunnel, and mark the positions where cracks and grooves appear on the inner wall of the tunnel; S2: Treat the inner wall of the tunnel. Carry out cleaning work on the inner wall of the tunnel. After removing the sundries attached to the surface of the tunnel, carry out filling work for the grooves and cracks on the surface of the tunnel, and fill them with epoxy mortar; S3: Treat the reinforcement plates. Carry out surface cleaning, surface rust removal and surface painting on the reinforcement plates respectively. After treating the reinforcement plates, cut them, bend the reinforcement plates to the same radian as the inner wall of the tunnel, and cut the reinforcement plates into several pieces according to the area size inside the tunnel; S4: Install the reinforcement plates inside the tunnel. By setting up installation frames on the inner wall of the tunnel, after fitting several reinforcement plates to the frame installation grooves corresponding to the inner wall of the tunnel, fix the positions of the reinforcement plates with screws, and weld the adjacent fixing plates together.

2. The method for reinforcing the steel lining in the reinforced concrete tunnel lining according to claim 1, wherein: In S1, several scanners are installed in the tunnel. The distance between the scanners is controlled within 2 - 3m. The cracks and grooves on the inner wall of the tunnel are scanned by the scanners, and the condition of the inner wall of the tunnel is projected onto a visualization device. People locate the positions of the cracks and grooves according to the display on the display screen.

3. A method for reinforcing a steel plate in the lining of a reinforced concrete tunnel according to claim 1, characterized in that: In S2, during the process of treating the inner wall of the tunnel, pre-treat the cracks and grooves in the tunnel. After chiseling the loose and sharp parts of the inner walls of the cracks and grooves to be flat, carry out roughening and cleaning.

4. A method for reinforcing a steel plate in the lining of a reinforced concrete tunnel according to claim 1, characterized in that: In S2, when carrying out the cleaning work on the inner wall of the tunnel, for the sundries attached to the surface of the tunnel, use a tunnel cleaning machine equipped with a high-pressure water gun to wash and rinse the surface of the tunnel until it is clean.

5. A method for reinforcing a steel plate in the lining of a reinforced concrete tunnel according to claim 1, characterized in that: In S2, when carrying out the filling work on the inner wall of the tunnel, fill the cracks and grooves with concrete for repair. After the concrete is completely dry, set up an installation frame on the inner wall of the tunnel. The installation frame is evenly distributed with holes, and the installation bracket fits the inner wall of the tunnel through a support structure.

6. A method for reinforcing a steel plate lining in a reinforced concrete tunnel according to claim 1, characterized in that: In S3, during the process of treating the reinforcement plates, the thickness of the reinforcement plates is 9mm, the cut size is a rhombus shape with an area of 2m × 1.5m, and several holes are opened on each reinforcement plate. The opened holes are distributed at the corners of the reinforcement plates.

7. A method for reinforcing a steel plate in the lining of a reinforced concrete tunnel according to claim 1, characterized in that: In S3, during the process of surface cleaning of the reinforcement plates, use a high-pressure water gun to clean the surface of the reinforcement plates to ensure that there are no foreign objects on the surface when cutting the reinforcement plates.

8. A method for reinforcing a steel plate in the lining of a reinforced concrete tunnel according to claim 1, characterized in that: In S3, during the process of surface rust removal of the reinforcement plates, use a sandblaster to remove rust from the surface of the reinforcement plates, and soak them with a rust remover to remove the rust paint on the surface of the reinforcement plates.

9. A method for reinforcing the steel lining in the reinforced concrete tunnel lining according to claim 1, characterized in that: In S3, during the process of surface painting of the reinforcement plates, spray the surface of the rust-removed reinforcement plates with a spray gun, apply topcoat on top of the primer, and finally evenly apply an antiseptic on the arc surface of the reinforcement plates.

10. A method for reinforcing the steel lining in the reinforced concrete tunnel lining according to claim 1, characterized in that: In S4, the reinforcement plates are installed corresponding to the holes on the installation frame. The installation plates are quickly positioned through the holes on the installation frame, and the distance gap between each reinforcement plate is controlled within 0.4mm. After all the reinforcement plates are fixed on the inner wall of the tunnel, remove the installation frame, and then carry out welding work between the reinforcement plates.

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