CN210481897U

CN210481897U - Embankment heavy grade rack rail railway structure

Info

Publication number: CN210481897U
Application number: CN201920599755.6U
Authority: CN
Inventors: 姚裕春; 周波; 张建文; 肖朝乾; 王智猛; 张耀; 袁报
Original assignee: China Railway Eryuan Engineering Group Co Ltd CREEC
Current assignee: Sichuan Shudao New Standard Track Group Co ltd; China Railway Eryuan Engineering Group Co Ltd CREEC
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2020-05-08
Anticipated expiration: 2029-04-28

Abstract

A structure of a large-gradient toothed rail railway of a embankment is used for greatly enhancing the integral stability and the anti-skid capability of ballast, ensuring the safety of the large-gradient toothed rail railway and having good economical efficiency. The roadbed comprises a lower embankment filling body filled on the foundation layer by layer and an upper embankment surface layer filling body filled on the lower embankment filling body by layer. And the lower parts of the U-shaped nails arranged at intervals penetrate through the friction pads to be fixed in the embankment surface layer filling body. And the friction pad is paved with ballast between the inner walls of the ballast blocking walls at the two sides and is dense in vibration, and the track structure is buried at the top of the ballast.

Description

Embankment heavy grade rack rail railway structure

Technical Field

The utility model relates to a road bed engineering, in particular to embankment engineering of heavy grade rack rail railway.

Background

The rack rail railway is a railway with strong climbing performance, so the longitudinal slope of the line can be larger. The function of the tooth-track railway track and the ballast, the ballast and the roadbed surface is very important, if the frictional resistance between the ballast and the roadbed surface which is rolled smoothly is insufficient, the ballast can not provide enough effective resistance for the track, and if the roadbed surface is made into a rough structure, accumulated water is not easy to drain, and the roadbed structure can be softened; ballast stability on both sides of the subgrade track is also reduced under the action of the track force when the gradient is larger. Therefore, the embankment large-gradient toothed rail railway structure and the construction method have important significance, and are beneficial to ensuring the operation safety of the large-gradient toothed rail railway, the economy and the environmental protection of the construction of the toothed rail railway and popularization and application.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a embankment heavy grade rack rail railway structure is provided to strengthen the overall stability and the cling compound ability of ballast greatly, ensure the security of heavy grade rack rail railway, and have good economic nature.

The utility model provides a technical scheme as follows that above-mentioned technical problem took:

the utility model discloses a big gradient rack rail railway structure of embankment, road bed include that the layering fills the embankment lower part on the ground and packs the body to and the embankment top layer on embankment lower part packs the body, characterized by are filled in the layering: the device comprises a road embankment surface layer filling body, a friction pad, U-shaped nails, a ballast blocking wall, a friction pad, a rubber pad and a rubber pad, wherein the ballast blocking walls are fixedly arranged at the positions of road shoulders at two sides of the road embankment surface layer filling body; and the friction pad is paved with ballast between the inner walls of the ballast blocking walls at the two sides and is dense in vibration, and the track structure is buried at the top of the ballast.

The utility model has the advantages that a layer of high friction pad is laid and fixed on the top surface of the flat roadbed surface layer structure, so that the ballast can not slide on the surface layer of the embankment, thereby providing enough frictional resistance for the track structure, greatly enhancing the overall stability and the anti-sliding capability of the ballast and effectively improving the safety of the high-gradient toothed rail railway; the ballast blocking walls are fixedly arranged at the positions of the road shoulders, so that the function of blocking the ballast is achieved, the transverse instability of the ballast on a roadbed is avoided, the width of a roadbed surface is reduced, the land is saved, the filling amount of the embankment is reduced, and the economic performance is good; the construction method is simple to operate, the quality is easy to control, the engineering investment is saved, and the method can be popularized and applied in a large scale.

Drawings

Fig. 1 is a schematic cross-sectional view of a large-gradient rack-track railway structure of an embankment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

fig. 4 is a schematic cross-sectional view of a conventional rack rail railway cut structure.

The component names and corresponding labels are shown in the figure: the road embankment structure comprises a lower embankment filling body 10, a surface embankment filling body 11, ballast 12, a friction pad 13, U-shaped nails 14, a ballast blocking wall 20, drainage holes 21, fixing steel bars 22 and a track structure 30.

Detailed Description

The invention is further described with reference to the following figures and examples:

referring to fig. 1, 2 and 3, the utility model discloses a big gradient rack rail railway structure of embankment, road bed include the embankment lower part of layering filling body 10 of filling on the ground to and the embankment top layer of layering filling body 11 on embankment lower part filling body 10. And the ballast blocking walls 20 are fixedly arranged at the positions of the road shoulders at the two sides of the embankment surface layer filling body 11, the friction pads 13 are laid on the top surface of the embankment surface layer filling body 11 between the ballast blocking walls 20 at the two sides, and the lower parts of the U-shaped nails 14 which are arranged at intervals penetrate through the friction pads 13 and are fixed in the embankment surface layer filling body 11. The friction pad 13 is paved with the ballast 12 between the inner walls of the ballast walls 20 at the two sides and is tightly vibrated, and the track structure 30 is buried at the top of the ballast 12.

Referring to fig. 1, a layer of friction pad 13 with high friction coefficient is laid and fixed on the top surface of a flat roadbed surface layer structure 11, so that the ballast 12 does not slide on the surface layer of the embankment, thereby providing enough friction force for a track structure 30, greatly enhancing the overall stability and anti-sliding capability of the ballast 12, and effectively improving the safety of the high-gradient tooth-track railway. The ballast blocking walls 20 fixedly arranged at the positions of the road shoulders block the ballast 12, so that the transverse instability of the ballast 12 on a roadbed is avoided, the width of a roadbed surface is reduced, the land is saved, the filling amount of the embankment is reduced, and the economic performance is good.

Referring to fig. 1, the top surface of the embankment surface layer filling body 11 is provided with a drainage slope of not less than 4% from the center of the roadbed to both sides. The section of the ballast blocking wall 20 is L-shaped, the ballast blocking wall is provided with a cantilever and a bottom plate, fixed steel bars 22 are arranged on the bottom plate at intervals along the direction of the road, and each fixed steel bar 22 is fixedly connected with the steel bar of the ballast blocking wall 20 and extends downwards into the embankment surface layer filling body 11. The top surface of the bottom plate of the slag blocking wall 20 inclines towards the side of the roadbed slope to form a drainage slope not less than 4%, and the drainage slope is not less than the drainage slope of the top surface of the embankment surface layer filling body 11. And one drainage hole 21 is reserved at the bottom of the cantilever of the slag blocking wall 20 at the longitudinal interval of 1-2 m. Referring to fig. 3, the two lateral sides of the friction pad 13 are overlapped with the top surface of the bottom plate of the slag blocking wall 20, and the overlapping length is not less than 20 cm.

Referring to fig. 1, the utility model discloses a embankment heavy grade rack rail railway structure is under construction according to following step:

① filling the lower part of the embankment 10 on the ground layer by layer;

② filling embankment surface layer filling bodies 11 on the embankment lower part filling bodies 10 in a layered mode, wherein the filling heights of the two sides of the roadbed reach the elevation position of the bottom of the ballast retaining wall 20;

③ binding reinforcing steel bars of the ballast retaining wall 20, driving fixing reinforcing steel bars 22 into the embankment surface layer filling body 11, and binding and connecting the fixing reinforcing steel bars 22 with the reinforcing steel bars of the ballast retaining wall 20;

④ pouring 20 concrete of the ballast blocking wall, and reserving a drain hole 21 at the bottom of the cantilever at intervals of 1-2 m;

⑤ after the concrete of the slag blocking wall 20 reaches 70% of the design strength, paving a friction pad 13 on the top surface of the embankment surface layer filling body 11, tensioning and straightening, and lapping the two transverse sides of the friction pad 13 with the bottom plate of the slag blocking wall 20;

⑥, inserting U-shaped nails 14 into the friction pads 13 at intervals, and fixing the lower parts of the U-shaped nails 14 in the embankment surface layer filling body 11 through the friction pads (13);

⑦ paving the ballast 12 on the friction pad 13 and the top surface of the bottom plate of the ballast blocking wall 3 and compacting the ballast to the bottom elevation of the track structure 30 by vibration;

⑧ the track structure 30 is placed on top of the ballast 12 and the remaining ballast 12 is laid between the track structures 30 and vibrated to densify.

The construction method is simple to operate, the quality is easy to control, and the engineering investment is saved.

The above is only used for illustrating the present invention, and the present invention is not limited to the specific structure and construction method applicable range, so all the modifications and equivalents that may be utilized belong to the claimed patent scope.

Claims

1. A embankment heavy grade rack rail railway structure, road bed include the embankment lower part filler (10) of layering filling on the ground to and the embankment top layer filler (11) of layering filling on embankment lower part filler (10), characterized by: the ballast blocking walls (20) are fixedly arranged at the positions of the road shoulders at the two sides of the embankment surface layer filling body (11), friction pads (13) are laid between the ballast blocking walls (20) at the two sides on the top surface of the embankment surface layer filling body (11), and the lower parts of the U-shaped nails (14) which are arranged at intervals penetrate through the friction pads (13) to be fixed in the embankment surface layer filling body (11); and the friction pad (13) is paved with ballast (12) between the inner walls of the ballast walls (20) at the two sides and is dense in vibration, and the track structure (30) is embedded at the top of the ballast (12).

2. The embankment large-gradient rack-rail railway structure as claimed in claim 1, wherein: and the top surface of the embankment surface layer filling body (11) is provided with a drainage slope not less than 4% from the center of the roadbed to two sides.

3. The embankment large-gradient rack-rail railway structure as claimed in claim 1, wherein: the section of the ballast blocking wall (20) is L-shaped, the ballast blocking wall is provided with a cantilever and a bottom plate, fixed steel bars (22) are arranged on the bottom plate at intervals along the direction of a road, and each fixed steel bar (22) is fixedly connected with the steel bar of the ballast blocking wall (20) and extends downwards into the surface layer filling body (11) of the embankment.

4. The embankment large-gradient rack rail railway structure as claimed in claim 3, wherein: the top surface of the bottom plate of the slag blocking wall (20) inclines towards the side of the roadbed slope to form a drainage gradient which is not less than 4 percent and is not less than the drainage gradient of the top surface of the embankment surface layer filling body (11); and a drain hole (21) is reserved at the bottom of the cantilever of the slag blocking wall (20) at a longitudinal interval of 1-2 m.

5. The embankment large-gradient rack rail railway structure as claimed in claim 4, wherein: the two transverse sides of the friction pad (13) are lapped with the top surface of the bottom plate of the slag blocking wall (20), and the lapping length is not less than 20 cm.