Construction method for rail transition section crossing contact channel based on vibration reduction requirement

Abstract

The invention relates to the technical field of rail traffic construction, in particular to a construction method for a rail transition section at a crossing contact channel based on a vibration reduction requirement, and the construction method comprises the steps that first supports are installed at reserved channel positions on the two sides of a tunnel segment respectively, and the first supports are connected with the tunnel segment through bolts; a second support is installed between the first supports on the two sides, the side face of the second support is connected with the first supports through bolts, the bottom faces of the ends of the two sides of the second support are concave inwards, and buffer adjusting base plates are arranged between the concave parts and the first supports; and the steel rail is installed on the second support. The method has the advantages that the non-destructive installation of the track transition section crossing the contact channel is realized, the completeness of the duct piece is ensured, and the damage is avoided; the vibration reduction requirement is met, noise reduction is achieved, and the engineering quality is remarkably improved; prefabrication degree is high, mounting and dismounting are convenient, construction efficiency is guaranteed, and popularization is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of rail transit construction, and in particular to a construction method for a rail transition section across a connecting channel based on vibration reduction requirements. Background Art

[0002] At present, the construction of the track transition section at the connecting channel generally requires temporary support of the rails by drilling holes in the tunnel segments and installing fixings to ensure the structural stability of the rails themselves. However, drilling holes will cause damage to the tunnel segments, and restoration is required after the construction is completed. Summary of the invention

[0003] The purpose of the present invention is to provide a construction method for a track transition section across a connecting channel based on vibration reduction requirements in accordance with the above-mentioned deficiencies in the prior art, by setting a combined bracket consisting of a first bracket and a second bracket, in conjunction with the reserved grooves of the tunnel segments, to achieve rapid installation of the rails while meeting the vibration reduction requirements.

[0004] The purpose of the present invention is achieved by the following technical solutions: A construction method for a track transition section across a connecting channel based on vibration reduction requirements, used to support rails on tunnel segments, characterized in that the construction method comprises the following steps: First brackets are respectively installed at the reserved groove positions on both sides of the tunnel segment, and the first brackets are connected to the tunnel segment by bolts; A second bracket is installed between the first brackets on both sides, wherein the side surface of the second bracket is connected to the first bracket by bolts, the bottom surfaces of the two side ends of the second bracket are concave, and a buffer adjustment pad is arranged between the concave part and the first bracket; The rail is mounted on the second bracket.

[0005] The first bracket includes a support body, and an elliptical opening is arranged on the support body. The side surface of the second bracket has a connecting hole matched with the elliptical opening, and the connection and fixation between the second bracket and the first bracket are achieved by screwing in bolts.

[0006] The first bracket includes a high-strength steel plate, the support body is arranged on the high-strength steel plate, and the high-strength steel plate is connected to the tunnel segment by bolts.

[0007] The installation height of the second bracket on the first bracket is adjusted through the elliptical opening.

[0008] The rail is mounted on the second bracket via a fastener device, and a limit clamp is provided on the second bracket.

[0009] The fastener device includes a prefabricated iron pad, a bolt group, a W-shaped spring bar, a T-shaped bolt and a buffer block, wherein the prefabricated iron pad is arranged within the limiting clamp and is limited by it, buffer blocks are arranged on both sides of the rail, and the W-shaped spring bar is fixed by the T-shaped bolt and presses the buffer block.

[0010] A buffer plate is arranged between the steel rail and the prefabricated iron plate.

[0011] A buffer plate is arranged between the prefabricated iron plate and the limit clamping plate.

[0012] The advantages of the present invention are: achieving lossless installation of the track transition section across the connecting channel, ensuring the integrity of the pipe segment and avoiding damage; meeting the vibration reduction requirements while achieving noise reduction, significantly improving the project quality; having a high degree of prefabrication, easy installation and disassembly, ensuring construction efficiency, and being suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0014] The features of the present invention and other related features are further described in detail below through embodiments in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art: like Figure 1 As shown, the numbers 1-15 in the figure respectively represent: a first bracket 1, a second bracket 2, a rail 3, a high-strength steel plate 4, a support body 5, a bolt group 6, a buffer adjustment pad 7, an elliptical opening 8, a limit clamping plate 9, a prefabricated iron pad 10, a bolt group 11, a W-shaped spring bar 12, a T-shaped bolt 13, a buffer block 14, and a buffer pad 15.

[0015] Example: Figure 1 As shown, the construction method of the track transition section across the connecting channel based on the vibration reduction requirement in this embodiment is used to install the rail 3 to the designed position of the tunnel segment, including the following steps: 1) First brackets 1 are respectively installed at the reserved groove positions on both sides of the tunnel segment. The first brackets 1 are connected to the tunnel segment through bolt groups 6 to achieve non-destructive installation.

[0016] In this embodiment, the first bracket 1 includes a high-strength steel plate 4 and a support body 5, wherein the support body 5 is welded on the high-strength steel plate 4, and both are prefabricated, that is, after being prefabricated in the factory, they are transported to the construction site for installation to improve construction efficiency. When the high-strength steel plate 4 is prefabricated, a connection hole matching the structure of the reserved groove of the tunnel segment is reserved on the plate body, and a fast and lossless fixed connection between it and the tunnel segment is achieved through a bolt group 6. An elliptical opening 8 is provided on the support body 5, which is used to cooperate with the connection hole reserved on the side of the second bracket 2 to achieve a fixed connection between the first bracket 1 and the second bracket 2. At the same time, the installation height of the second bracket 2 on the first bracket 1 can be adjusted through the elliptical opening 8, thereby ensuring the installation accuracy of the rail 3 installed on the second bracket 2.

[0017] 2) A second bracket 2 as a crossbeam is installed between the first brackets 1 on both sides, wherein the side surface of the second bracket 2 is connected to the first bracket 1 via a bolt group 6. The bottom surfaces of the two side ends of the second bracket 2 are concave, and a buffer adjustment pad 7 is provided between the concave part and the first bracket 1.

[0018] In this embodiment, by arranging a buffer adjustment pad 7 at the matching position between the second bracket 2 and the first bracket 1, it is ensured that the vibration generated by the rail 3 during use is buffered and consumed by the buffer adjustment pad 7, thereby preventing the vibration from being further transmitted to the tunnel segment, thereby ensuring the structural stability of the tunnel segment; at the same time, the buffer adjustment pad 7 can also play a role in adjusting the installation height of the second bracket 2, thereby ensuring the installation accuracy of the rail 3.

[0019] The rail is mounted on the second bracket.

[0020] 3) The rail 3 is mounted on the second bracket 2 by means of a fastener device. The second bracket 2 is provided with a limiting clamping plate 9 for limiting the installation position of the rail 3 .

[0021] In this embodiment, the fastener device includes a prefabricated iron pad 10, a bolt group 11, a W-shaped spring bar 12, a T-shaped bolt 13 and a buffer block 14, wherein the prefabricated iron pad 10 is arranged within and limited by a limiting clamp 9 provided on the second bracket 2, and buffer blocks 14 are provided on both sides of the rail 3, and the W-shaped spring bar 12 is fixed by a T-shaped bolt 13 and the buffer block 14 is buckled.

[0022] In this embodiment, buffer pads 15 are respectively provided between the rail 3 and the prefabricated iron pad 10 and between the prefabricated iron pad 10 and the limit clamp 9; the two buffer pads 15 further buffer the vibration of the rail 3 to the bottom to meet the vibration reduction requirements.

[0023] Although the above embodiments have described in detail the concepts and embodiments of the present invention with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and changes can still be made to the present invention without departing from the scope of the claims, so they are not described one by one here.

Claims

1. A construction method for a track transition section across a connecting channel based on vibration reduction requirements, used to support rails on tunnel segments, characterized in that: The construction method comprises the following steps: First brackets are respectively installed at the reserved groove positions on both sides of the tunnel segment, and the first brackets are connected to the tunnel segment by bolts; A second bracket is installed between the first brackets on both sides, wherein the side surface of the second bracket is connected to the first bracket by bolts, the bottom surfaces of the two side ends of the second bracket are concave, and a buffer adjustment pad is arranged between the concave part and the first bracket; The rail is mounted on the second bracket.

2. A construction method for a track transition section across a connecting channel based on vibration reduction requirements according to claim 1, characterized in that: The first bracket includes a support body, and an elliptical opening is arranged on the support body. The side surface of the second bracket has a connecting hole matched with the elliptical opening, and the connection and fixation between the second bracket and the first bracket are achieved by screwing in bolts.

3. A construction method for a track transition section across a connecting channel based on vibration reduction requirements according to claim 2, characterized in that: The first bracket includes a high-strength steel plate, the support body is arranged on the high-strength steel plate, and the high-strength steel plate is connected to the tunnel segment by bolts.

4. A construction method for a track transition section across a connecting channel based on vibration reduction requirements according to claim 2, characterized in that: The installation height of the second bracket on the first bracket is adjusted through the elliptical opening.

5. The construction method of a track transition section across a connecting channel based on vibration reduction requirements according to claim 1 is characterized in that: The rail is mounted on the second bracket via a fastener device, and a limit clamp is provided on the second bracket.

6. A construction method for a track transition section across a connecting channel based on vibration reduction requirements according to claim 5, characterized in that: The fastener device includes a prefabricated iron pad, a bolt group, a W-shaped spring bar, a T-shaped bolt and a buffer block, wherein the prefabricated iron pad is arranged within the limiting clamp and is limited by it, buffer blocks are arranged on both sides of the rail, and the W-shaped spring bar is fixed by the T-shaped bolt and presses the buffer block.

7. A construction method for a track transition section across a connecting channel based on vibration reduction requirements according to claim 6, characterized in that: A buffer plate is arranged between the steel rail and the prefabricated iron plate.

8. The construction method of a track transition section across a connecting channel based on vibration reduction requirements according to claim 6 is characterized in that: A buffer plate is arranged between the prefabricated iron plate and the limit clamping plate.

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