CN216107842U - Frame type sleeper for tunnel inspection well section - Google Patents
Frame type sleeper for tunnel inspection well section Download PDFInfo
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- CN216107842U CN216107842U CN202122482301.0U CN202122482301U CN216107842U CN 216107842 U CN216107842 U CN 216107842U CN 202122482301 U CN202122482301 U CN 202122482301U CN 216107842 U CN216107842 U CN 216107842U
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Abstract
The utility model relates to a frame-type sleeper for a tunnel inspection shaft section. The single-line tunnel clearance is little, and ditch and inspection shaft all lay at the line center, and track structure lays the completion back, and the road bed will directly cover the inspection shaft entrance to a cave, can't carry out normal maintenance. The frame-type sleeper is of a reinforced concrete structure, and a hole is formed in the center of the frame-type sleeper, corresponding to the position of an inspection well, and serves as an inspection window; the longitudinal front and back sides of the opening are provided with rail bearing platforms. The utility model overcomes the defect that the ballast track section in the tunnel in the severe cold area can not be provided with the inspection well, does not need to open the railway ballast to carry out inspection operation on the inspection well, is convenient and quick, does not influence the maintenance and repair efficiency of a large machine, and has great technical advantages and application prospects.
Description
Technical Field
The utility model relates to the technical field of rail engineering, in particular to a frame type sleeper for a tunnel inspection well section.
Background
Long-term operation experience shows that water is the main cause of frost heaving damage of tunnel linings or inverted arches in severe cold regions. Once the tunnel inverted arch is formed with frost heaving, the following performance of the upper track structure causes the track surface to form obvious geometric irregularity such as height, direction and the like, the functionality and durability of the track structure are influenced, the comfort of passengers is reduced, and even the driving safety is endangered.
For preventing severe cold district tunnel lining such as plateau, high altitude or inverted arch frost heaving destruction, tunnel entrance to a cave scope need set up the frost resisting section of seting up defences to the interval sets up and buries central ditch deeply, for maintenance during the operation, needs to set up and buries central inspection shaft deeply.
The single line tunnel is because the section size is less, and central inspection shaft overhauls the entrance to a cave and is covered by track structure, is difficult to satisfy the maintenance demand. The existing processing method is mainly used for cutting the sleeper and cutting and digging a square hole at the center of a ballast bed to reserve an overhaul channel. But has the disadvantages that: on one hand, rail parts are damaged by cutting the sleepers, and weak links are artificially caused; on the other hand, the integrity and the stability of the track frame are weakened, and the driving safety is reduced.
Disclosure of Invention
The utility model aims to provide a frame type sleeper for a tunnel inspection well section, which overcomes the defect that an inspection well cannot be reasonably arranged in a single-line tunnel in a severe cold area and is beneficial to inspection operation, maintenance and repair.
The technical scheme adopted by the utility model is as follows:
a frame-type sleeper for tunnel inspection shaft section which characterized in that:
the frame type sleeper is of a reinforced concrete structure, and an opening is formed in the center of the frame type sleeper, corresponding to the position of the inspection well, and serves as an inspection window;
the longitudinal front and back sides of the opening are provided with rail bearing platforms.
The rail bearing platforms are arranged on the frame-type sleeper in a front-back pair or a plurality of front-back pairs.
And transverse steel bars and longitudinal prestressed steel bars are arranged in the frame type sleeper.
The longitudinal prestressed reinforcement is arranged in an upper layer and a lower layer in the frame type sleeper, and the end part of the longitudinal prestressed reinforcement is provided with an anchoring plate.
The transverse steel bars are arranged outside the longitudinal prestressed steel bars and are annular.
The utility model has the following advantages:
the utility model overcomes the defect that the ballast track section in the tunnel in the severe cold area can not be provided with the inspection well, does not need to open the railway ballast to carry out inspection operation on the inspection well, is convenient and quick, does not influence the maintenance and repair efficiency of a large machine, and has great technical advantages and application prospects.
Drawings
FIG. 1 is a schematic plan view of the present invention including a pair of rail bearing platforms;
FIG. 2 is a schematic plan view of the present invention including two pairs of rail supporting platforms;
FIG. 3 is a schematic cross-sectional view of the present invention;
FIG. 4 is a schematic view of the tendon and the anchor plate of the present invention;
fig. 5 is a schematic view of the detailed view a of the present application.
The figure includes: the steel rail anchor plate comprises a frame type sleeper (1), a rail bearing platform (2), transverse steel bars (3), longitudinal prestressed steel bars (4) and an anchor plate (5).
Detailed Description
The present invention will be described in detail with reference to specific embodiments.
The utility model relates to a frame type sleeper for a tunnel inspection well field, wherein the frame type sleeper 1 is of a reinforced concrete structure, and a hole is arranged in the center of the frame type sleeper and corresponds to the position of an inspection well to be used as an inspection window; the longitudinal front and back sides of the opening are provided with rail bearing platforms 2. The support platforms 2 are arranged one behind the other or several behind the other on the frame sleeper 1.
And transverse steel bars 3 and longitudinal prestressed steel bars 4 are arranged in the frame type sleeper 1. The longitudinal prestressed reinforcement 4 is arranged in an upper layer and a lower layer in the frame type sleeper 1, and the end part is provided with an anchoring plate 5. The transverse steel bars 3 are arranged outside the longitudinal prestressed steel bars 4 and are annular.
The utility model is explained in further detail with reference to the drawings in which:
the utility model relates to a frame-type sleeper, which comprises a frame-type sleeper 1 with a reinforced concrete structure; the middle part of the sleeper 1 is hollowed and provided with an overhaul window; the sleeper 1 is provided with one or more pairs of rail bearing platforms 2 according to the requirements of a tunnel inspection well; the sleeper 1 is internally provided with transverse steel bars 3 and longitudinal prestressed steel bars 4.
The size of an access window arranged in the frame type sleeper 1 is set according to the size of a tunnel inspection well opening, the reserved access window of the sleeper is larger than the size of the access well opening, and a cover plate is installed at the access well opening after the frame type sleeper 1 is laid. The length of the external dimension of the sleeper can be kept consistent with the width of the existing sleeper on the line, the longitudinal width of the line is generally 500mm plus the length dimension of the manhole along the line direction, wherein 100mm is a groove expanding part reserved for a cover plate, and 200mm is a concrete frame part of the sleeper 1.
The rail bearing platforms 2 arranged on the frame type sleeper 1 are reasonably arranged according to the size of an access well opening, when the longitudinal size of a line extending from the access well opening is larger than 400mm, 2 pairs of rail bearing platforms 2 are required to be arranged, and the reasonable supporting distance of the fasteners is ensured. The rail bearing platform 2 is designed according to the circuit requirement, a fastener sleeve or a pre-embedded iron seat meeting the line operation requirement is pre-embedded in the rail bearing platform, the appearance of the rail bearing platform is designed according to the type of a fastener, and a shoulder blocking or non-shoulder blocking form can be adopted.
The frame type sleeper 1 is provided with an upper layer of longitudinal prestressed reinforcement 4 and a lower layer of longitudinal prestressed reinforcement 4, and annular transverse reinforcement 3 is arranged outside the longitudinal prestressed reinforcement 4. The longitudinal prestressed tendons 4 are prestressed wires, and the end parts of the longitudinal prestressed tendons are provided with anchoring plates 5 so as to reduce the transmission length of the prestressed wires. The outer contour of the anchoring plate 5 is regular octagon, so that the anchoring plate can be fastened by a spanner. The longitudinal prestressed tendons 4 adopt a pretensioning system, the transverse steel bars 3 are hot-rolled ribbed steel bars, and are arranged on the outer sides of the longitudinal prestressed tendons in a stirrup mode.
The utility model is not limited to the examples, and any equivalent changes to the technical solution of the utility model by a person skilled in the art after reading the description of the utility model are covered by the claims of the utility model.
Claims (5)
1. A frame-type sleeper for tunnel inspection shaft section which characterized in that:
the frame type sleeper (1) is of a reinforced concrete structure, and an opening is formed in the center of the frame type sleeper and corresponds to the position of the inspection well to serve as an inspection window;
the longitudinal front and back sides of the opening are provided with rail bearing platforms (2).
2. A frame-type tie for a tunnel inspection shaft section according to claim 1, wherein:
the rail bearing platforms (2) are arranged on the frame type sleeper (1) in a front-back pair or a plurality of front-back pairs.
3. A frame-type tie for a tunnel inspection shaft section according to claim 2, wherein:
transverse steel bars (3) and longitudinal prestressed steel bars (4) are arranged in the frame type sleeper (1).
4. A frame-type tie for a tunnel inspection shaft section according to claim 3, wherein:
the longitudinal prestressed reinforcement (4) is arranged in an upper layer and a lower layer in the frame type sleeper (1), and the end part is provided with an anchoring plate (5).
5. A frame-type tie for a tunnel inspection shaft section according to claim 4, wherein:
the transverse steel bars (3) are arranged outside the longitudinal prestressed steel bars (4) and are annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122482301.0U CN216107842U (en) | 2021-10-15 | 2021-10-15 | Frame type sleeper for tunnel inspection well section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122482301.0U CN216107842U (en) | 2021-10-15 | 2021-10-15 | Frame type sleeper for tunnel inspection well section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216107842U true CN216107842U (en) | 2022-03-22 |
Family
ID=80692807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122482301.0U Active CN216107842U (en) | 2021-10-15 | 2021-10-15 | Frame type sleeper for tunnel inspection well section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216107842U (en) |
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2021
- 2021-10-15 CN CN202122482301.0U patent/CN216107842U/en active Active
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