Rapid and safe plugging method for hole above rail-mounted area formed by connecting new line into existing line

Abstract

The invention provides a rapid and safe plugging method for a hole above a new line access existing line reconstruction rail-mounted area, which comprises the following steps: S1, laying a protective material on the rail-mounted area below the hole to protect the rail-mounted area, and arranging a galvanized steel sheet above the hole to carry out reconstruction construction hard isolation; s2, after the hard isolation galvanized steel plates are arranged in place, joints between the galvanized steel plates are fully welded, and expansion bolts are arranged in reserved bolt holes of the galvanized steel plates to be fixedly connected with the existing structure; and S3, a gap between the galvanized steel plate and the existing structure is filled with sealant, a reinforced concrete structural plate is poured on the hard isolation galvanized steel plate or a prefabricated plate is installed on the hard isolation galvanized steel plate, and hole plugging is completed. According to the method, the problems of long operation influence period, many potential safety hazards, incapability of continuous construction operation, incapability of meeting mechanical operation due to limited working space of the existing line and the like in transformation construction of connecting the new line into the old line are solved, the diversity and creativity of transfer function realization are improved, and the structure function realization is enhanced.

Description

Technical Field

[0001] The present invention belongs to the technical field of plugging holes in existing structures, and specifically relates to a method for quickly and safely plugging holes above a track area where a new line is connected to an existing line for reconstruction. Background Art

[0002] As the rail transit network becomes increasingly dense, the number of transfers between lines is gradually increasing. When the old line is built without considering the access conditions of the new line, the old line needs to be renovated. The renovation plan construction work may involve the space of the old line track area. The normal operation of the track area produces a piston effect wind pressure that will draw objects in, thus affecting vehicle operation and personnel safety. Therefore, the renovation work needs to be isolated from the track area in time or space. The time isolation plan needs to be carried out during the window period after the operation ends. The short operation time cannot guarantee effective and continuous operation, and there are safety hazards. Spatial isolation provides a continuous working surface and time for the renovation work on the premise of meeting safety requirements, and can achieve rapid and safe sealing of holes above the track area. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a method for quickly and safely sealing holes above the track area where a new line is connected to an existing line for renovation, which solves the safety hazards of construction above the track area and normal operation of rail transit, breaks the technical barrier of the old line not reserving an interface with the new line, improves the diversity and creativity of the transfer function, enhances the realization of the structural functions of rail transit, and improves the passenger experience.

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

[0005] A method for quickly and safely blocking a hole above a track area where a new line is connected to an existing line for reconstruction, characterized in that it comprises the following steps:

[0006] S1. Protective materials are laid on the track area below the hole to protect the track area, and galvanized steel plates are arranged above the hole to perform hard isolation;

[0007] S2. After the hard isolation galvanized steel plates are arranged in place, the joints between the galvanized steel plates are fully welded, and expansion bolts are installed in the reserved bolt holes of the galvanized steel plates to connect and fix them to the existing structure;

[0008] S3. Use sealant to fill the gap between the galvanized steel plate and the existing structure, cast reinforced concrete structural slabs or install prefabricated slabs on the hard isolation galvanized steel plate to complete the hole sealing.

[0009] Furthermore, the galvanized steel plate is provided with a steel plate reserved lifting ring for lifting.

[0010] Furthermore, the galvanized steel plate is quickly hoisted by a manual hoist.

[0011] Furthermore, for large-span holes, I-beams are set on the hard-isolated galvanized steel plates to meet the large-span stress requirements.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The present invention provides a method for rapid and safe plugging of holes above a track area, and relates to the technical field of rapid plugging of existing structures, including hard isolation of track area space, block hoisting of hard isolation steel plates, connection and fixation of hard isolation steel plates, and construction of plugging plates above steel plates. By reasonably transforming existing lines, convenient transfer methods and conditions for access to new lines are created. The transformation plan may involve plugging operations above the track area of ​​the existing line, using block hoisting of hard isolation steel plates within the limited space of the existing line, and effectively connecting and fixing the steel plates, and implementing plugging structure plates on the basis of hard isolation of steel plates, to achieve rapid and safe plugging of holes above the track area. The application of the present invention solves many problems such as the long operation impact period and safety hazards of the reconstruction construction of the new line connecting to the old line, the inability to carry out continuous construction operations, and the limited operating space of the existing line that cannot meet the needs of mechanical operations. The application of the present invention avoids the impact of the reconstruction construction of the new line connecting to the existing line on normal operations, and realizes the rapid and safe blocking construction of holes above the track area. It has the characteristics of safety, reliability, and strong operability, saves project cost and construction period, breaks the technical barrier of the old line not reserving the new line interface, improves the diversity and creativity of the transfer function, and enhances the structural function. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0015] Figure 1 This is a flow chart of the plugging method of the present invention;

[0016] Figure 2 A schematic diagram of a hole to be modified and blocked above the track area of ​​the present invention;

[0017] Figure 3 This is a schematic diagram of the structure and connection of the hard isolation galvanized steel plate of the present invention;

[0018] Figure 4 This is a schematic diagram of the hoisting and installation of the hard isolation galvanized steel plate of the present invention;

[0019] Figure 5 It is a schematic diagram of the hard isolation galvanized steel plate and reinforced concrete structural plate of the present invention;

[0020] Figure 6This is a structural schematic diagram of the completion of the construction of the sealing plate according to an embodiment of the present invention.

[0021] Reference numerals in the figure: 1-holes above the track area, 2-galvanized steel plate, 3-reserved lifting rings on the steel plate, 4-I-beam, 5-full weld of the joint, 6-reserved bolt holes, 7-expansion bolts, 8-reinforced concrete structural plate. DETAILED DESCRIPTION

[0022] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to be able to fully convey the scope of the present invention to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0023] The present invention discloses a method for quickly and safely blocking a hole above a track area where a new line is connected to an existing line. The process is as follows: Figure 1 As shown, the following steps are included:

[0024] S1. Tarpaulin, fire blanket and other protective materials are laid on the track area below the hole 1 to protect the track area, and galvanized steel plate 2 is arranged above the hole 1 for hard isolation of the renovation construction; the galvanized steel plate 2 is provided with a steel plate reserved lifting ring 3, and the galvanized steel plate 2 is quickly lifted by a manual hoist.

[0025] S2. After the hard isolation galvanized steel plates 2 are arranged in place, the galvanized steel plates 2 are connected by full seam welding 5. The galvanized steel plates 2 are overlapped on the existing structural part with reserved bolt holes 6, and are connected and fixed to the existing structure by installing expansion bolts 7 in the reserved bolt holes 6.

[0026] S3. Use sealant to fill the gap between the galvanized steel plate 2 and the existing structure, cast a reinforced concrete structure plate 8 or install a prefabricated plate on the hard isolation galvanized steel plate 2 to complete the hole sealing.

[0027] For large-span holes, I-beams 4 are laid on the hard-isolated galvanized steel plates 2 to meet the large-span stress requirements.

[0028] This method avoids the impact of the reconstruction construction of the new line connecting to the existing line on normal operations, and realizes the rapid and safe sealing construction of the holes above the track area. It has the characteristics of safety, reliability, and strong operability, saves project costs and construction period, breaks the technical barrier of the old line without reserving the new line interface, and improves the diversity and creativity of the transfer function.

[0029] The galvanized steel plate 2 is hoisted and welded in blocks, which can solve the problem of insufficient construction space within the existing line and the inability of large hoisting machinery to enter the site, and realize manual light and fast hoisting.

[0030] The structure diagram of the sealing plate after construction of the embodiment of the present invention is as follows Figure 6 As shown, the hole 1 above the track area is located above the side wall, and the galvanized steel plate 2 is laid above the hole 1 above the track area. The galvanized steel plate 2 connecting the side wall and the existing structure on the top is provided with a folded corner, which is respectively connected to the side wall and the existing structure on the top by expansion bolts 7; the galvanized steel plates 2 in the middle are arranged once to form an inclined surface, and the galvanized steel plates 2 are connected by full seam welding 5, and a reinforced concrete structural plate 8 is cast above the galvanized steel plate to finally complete the blocking of the hole 1.

[0031] The present invention has been described in detail above through embodiments, but the contents described are only exemplary embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. The protection scope of the present invention is defined by the claims. Anyone who utilizes the technical solution described in the present invention, or a technician in the field, inspired by the technical solution of the present invention, designs a similar technical solution within the essence and protection scope of the present invention to achieve the above technical effects, or makes equal changes and improvements to the scope of application, shall still belong to the scope of protection covered by the patent of the present invention. It should be noted that in order to make a clear statement, the description of some components and processes that have no direct and obvious connection with the scope of protection of the present invention but are known to those skilled in the art are omitted in the description of the present invention.

Claims

1. A method for quickly and safely blocking holes above the track area where a new line is connected to an existing line, characterized in that: The following steps are involved: S1. Lay protective materials on the track area below the hole to protect the track area, and arrange galvanized steel plates (2) above the hole to perform hard isolation; S2. After the hard isolation galvanized steel plates (2) are arranged in place, the joints between the galvanized steel plates (2) are fully welded, and expansion bolts (7) are installed in the reserved bolt holes (6) of the galvanized steel plates (2) to connect and fix them to the existing structure; S3. Use sealant to fill the gap between the galvanized steel plate (2) and the existing structure, cast a reinforced concrete structure plate (8) on the hard isolation galvanized steel plate (2) or install a prefabricated plate to complete the hole sealing.

2. A method for quickly and safely blocking holes above a track area according to claim 1, characterized in that: The galvanized steel plate (2) is provided with a steel plate reserved lifting ring (3) for lifting.

3. A method for quickly and safely blocking holes above a track area according to claim 2, characterized in that: The galvanized steel plate (2) is quickly hoisted by a manual hoist.

4. A method for rapidly expanding the diameter of a shield machine according to claim 1, characterized in that: For large-span holes, an I-beam (4) is arranged on the hard-isolated galvanized steel plate (2) to meet the large-span stress requirements.

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