A corrosion-resistant railway maintenance yard structure

Abstract

This utility model relates to a corrosion-resistant railway maintenance yard structure. Current railway maintenance yards suffer from problems such as easy corrosion and cracking of hardened surfaces and drainage ditches, and easy collapse of drainage ditches. This utility model includes a hardened surface, multiple drainage ditches, and multiple tracks. A column-type inspection pit is installed under the tracks. Drainage ditches are located on both sides of the tracks, and each drainage ditch is equipped with an iron grate at its top. A comprehensive pipe trench is installed beneath the hardened surface. The hardened surface uses an asphalt pavement structure mixed with an anti-corrosion agent and has a transverse drainage slope. The iron grates are installed at the top of the drainage ditches through multiple embedded parts. The drainage ditches are made of C35P8 concrete and anti-corrosion coating. PVC plastic drainage pipes are installed throughout the drainage ditches. The bottom of the drainage ditches is connected to the inspection pit drainage ditch at the bottom of the column-type inspection pits via longitudinal drainage pipes. The inspection pit drainage pipes are connected to the comprehensive pipe trench through the drainage pipe trench. The hardened surface and drainage ditches of this utility model are less prone to corrosion and cracking, and the drainage ditches are less prone to collapse.

Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, specifically to a corrosion-resistant railway maintenance yard structure. Background Technology

[0002] The maintenance yard is a place for the maintenance of railway locomotives and rolling stock before they are put into operation. The maintenance work is also a necessary process before the locomotives and rolling stock are put into operation. At present, the main operations of the maintenance yard include water supply, sewage suction, car washing and bedding installation. Among them, car washing is carried out not only on the car washing line, but also on the maintenance line of the maintenance yard.

[0003] Considering the nature and characteristics of dirt on the exterior of locomotives and rolling stock, the detergents commonly used on the market are acidic. Since the hardened surface of the road between maintenance lines is usually C25 asphalt concrete, and there are long drainage ditches along the tracks on both sides of the maintenance line, the structure and material of the drainage ditches are also C25 asphalt concrete according to the standard drawings. The top of the drainage ditches is covered with cast iron grates, which are 500mm*350mm in length and width. Over the years of operation, the drainage ditches and the hardened road surface have suffered severe corrosion. The surface concrete has basically cracked, and the steel bars are exposed. The drainage ditches on both sides have suffered damage from various physical and chemical damages, such as being run over by operating vehicles, freezing damage, corrosion from de-icing salt, and corrosion from acidic detergents. As a result, the iron grates have been damaged, and the drainage ditches have suffered from crushing, corrosion and cracking.

[0004] Because the maintenance workers conduct maintenance and inspection on both sides of the maintenance line and under the vehicle, the positions of the workers and the drainage ditches on both sides are basically the same. Therefore, the defects of the drainage ditches and iron grates pose a significant risk to the maintenance workers. The extensive corrosion and damage of the hardened ground between the maintenance lines causes the non-powered maintenance vehicles to tilt, overturn, and be damaged.

[0005] Therefore, there is an urgent need for a preparation yard structure that is resistant to corrosion and cracking of the hardened ground and drainage ditches, and that is resistant to crushing of the drainage ditches. Summary of the Invention

[0006] The purpose of this invention is to provide a corrosion-resistant railway maintenance yard structure to at least solve the problems of easy corrosion and cracking of the hardened ground and drainage ditches in current maintenance yards, as well as the easy crushing of drainage ditches.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A corrosion-resistant railway maintenance yard structure includes a hardened ground, multiple drainage ditches and multiple tracks. A column-type inspection pit is set under the tracks. The drainage ditches are respectively set on both sides of the tracks. Each drainage ditch is equipped with an iron grate at its upper end. A comprehensive pipe trench is set under the hardened ground. The hardened ground adopts an asphalt pavement structure and is mixed with anti-corrosion agent. A transverse drainage slope is set on the hardened ground.

[0009] The iron grate is installed at the upper end of the drainage ditch through multiple embedded parts;

[0010] The drainage ditch is made of C35P8 concrete and anti-corrosion coating. A PVC plastic drainage pipe is installed inside the drainage ditch. The bottom of the drainage ditch is connected to the drainage ditch of the inspection pit at the bottom of the column inspection pit through a longitudinal drainage pipe.

[0011] The drainage channel of the inspection pit is connected to the integrated pipe trench through the drainage pipe trench.

[0012] Furthermore, the PVC plastic drain pipe is disposed inside the side wall of the drainage ditch near the track.

[0013] Furthermore, the PVC plastic drain pipe is inclined, with the end of the PVC plastic drain pipe closer to the track being higher than the end closer to the hardened ground.

[0014] Furthermore, one side of the drainage ditch is connected to the outer wall of the column inspection pit, and the other side is connected to the hardened ground.

[0015] Furthermore, the upper surface of the iron grate is flush with the upper surface of the drainage ditch.

[0016] Furthermore, the embedded parts are respectively set on both sides of the upper end of the drainage ditch. The embedded parts include angle steel brackets and multiple reinforcing bars, and the angle steel brackets are set on the upper end of the reinforcing bars.

[0017] Furthermore, the angle steel bracket has a rectangular plane, and the iron grate is placed on the angle steel bracket.

[0018] Furthermore, each of the angle steel supports is covered with multiple iron grates.

[0019] Furthermore, the longitudinal drain pipe is horizontally L-shaped.

[0020] Furthermore, the hardened surface comprises, in sequence from top to bottom, fine-grained asphalt concrete, tack coat, coarse-grained asphalt concrete, asphalt macadam seal coat, prime coat, 5% cement-stabilized gravel, and cement-lime soil.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] This utility model provides a corrosion-resistant railway maintenance yard structure. The hardened ground uses an asphalt pavement structure mixed with anti-corrosion agent, and the drainage ditch uses C35P8 concrete and anti-corrosion coating, which can effectively improve the corrosion resistance of the hardened ground and the drainage ditch. The iron grate at the top of the drainage ditch is installed at the top of the drainage ditch by angle steel brackets and steel bars, which provides a stable support for the iron grate, making the iron grate less prone to damage, thereby making the drainage ditch less prone to crushing. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a partial cross-sectional schematic diagram of the present invention;

[0025] Figure 2 This is a partial planar schematic diagram of the present invention;

[0026] Figure 3 This is a cross-sectional schematic diagram of a horizontal drainage pipe;

[0027] Figure 4 This is a schematic diagram of the embedded parts;

[0028] Figure 5 This is a plan view of the angle steel bracket;

[0029] Figure 6 This is a schematic diagram of a cross-section of the hardened ground;

[0030] The diagram is labeled as follows:

[0031] 1-Railway, 2-Column inspection pit, 3-Drainage ditch, 4-PVC plastic drainage pipe, 5-Angle steel bracket, 6-Iron grate, 7-Hardened ground, 8-Integrated pipe trench, 9-Transverse drainage slope, 10-Inspection pit drainage ditch, 11-Longitudinal drainage pipe, 12-Embedded parts, 13-Fine-grained asphalt concrete, 14-Tack coat, 15-Coarse-grained asphalt concrete, 16-Asphalt chip seal coat, 17-Tack coat, 18-5% cement-stabilized gravel, 19-Cement-lime soil. Detailed Implementation

[0032] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0033] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Example:

[0036] like Figure 1 and Figure 2 As shown, this embodiment provides a corrosion-resistant railway maintenance yard structure, including a hardened ground 7, four drainage ditches 3 and two tracks 1. Each track 1 is provided with a column-type inspection pit 2. The track 1 is connected to the column-type inspection pit 2. The track 1 is used for railway vehicles to run, and the column-type inspection pit 2 is used to bear the weight of the railway vehicles and facilitate maintenance operations. The drainage ditches 3 are respectively provided on both sides of the track 1.

[0037] Specifically, the hardened ground surface 7 uses an asphalt pavement structure and is mixed with anti-corrosion agents, which can effectively enhance the corrosion resistance of the hardened ground surface 7. The drainage ditch 3 uses C35P8 concrete and anti-corrosion coating, which can improve the corrosion resistance of the drainage ditch 3.

[0038] One side of the drainage ditch 3 is connected to the outer wall of the column inspection pit 2, and the other side is connected to the hardened ground 7. C35 concrete with anti-corrosion coating is poured between the drainage ditch 3 and the column inspection pit 2. The boundary of the hardened ground 7 is the outer wall of the drainage ditch 3. A PVC plastic drainage pipe 4 is embedded in the inner wall of the drainage ditch 3 near the track 1. The PVC plastic drainage pipe 4 is used for drainage of the roadbed on one side of the column inspection pit 2.

[0039] The PVC plastic drain pipe 4 is installed at an angle, with the end of the PVC plastic drain pipe 4 near the track 1 being higher than the end near the hardened ground 7.

[0040] Specifically, multiple iron grates 6 are installed at the upper end of the drainage ditch 3, and multiple embedded parts 12 are installed on both sides of the upper end of the drainage ditch 3. The embedded parts 12 on each side are arranged adjacent to each other with an interval of 20cm. The iron grates 6 are installed at the upper end of the drainage ditch 3 through the embedded parts 12. The embedded parts 12 provide stable support for the iron grates 6, making the iron grates 6 less likely to be damaged. The upper surface of the iron grates 6 is flush with the upper surface of the drainage ditch 3.

[0041] like Figure 4 As shown, the embedded part 12 includes an angle steel bracket 5 and multiple reinforcing bars. The reinforcing bars are distributed in two symmetrical rows. The angle steel bracket 5 is welded to the upper end of the reinforcing bars, and the spacing between each row of reinforcing bars is 20cm.

[0042] like Figure 5 As shown, the angle steel bracket 5 has a rectangular shape, and the iron grate 6 is placed on the angle steel bracket 5 on both sides.

[0043] In this embodiment, a transverse drainage slope 9 is provided on the hardened ground surface 7. The transverse drainage slope 9 is sloping outwards from the center line of the hardened ground surface 7 to the drainage ditches 3 on both sides, so that the hardened road surface is inverted V shape after completion.

[0044] Specifically, such as Figure 3 As shown, the bottom of the drainage ditch 3 is connected to the inspection pit drainage ditch 10 at the bottom of the column inspection pit 2 through the longitudinal drainage pipe 11. The longitudinal drainage pipe 11 is horizontally L-shaped, and the longitudinal drainage pipes 11 on both sides of the track 1 are symmetrically distributed.

[0045] A comprehensive pipe trench 8 is installed below the hardened ground 7, and the bottom of the inspection pit drainage ditch 10 is connected to the comprehensive pipe trench 8 through the drainage pipe trench.

[0046] In this embodiment, in addition to the routing of cables and pipelines, the integrated pipe trench 8 is also used to collect drainage from the hardened ground 7 between the maintenance lines and the drainage from the column inspection pit 2. The drainage flow direction is as follows: car wash drainage, rainwater, etc. first flow through the transverse drainage slope 9 of the hardened ground 7 to the iron grate 6, and then seep into the drainage ditch 3 through the gaps in the iron grate 6. The drainage flows to the bottom of the drainage ditch 3, and is collected into the inspection pit drainage ditch 10 through the longitudinal drainage pipe 11. Then, in the inspection pit drainage ditch 10, it flows into the integrated pipe trench 8 through the drainage pipe trench.

[0047] The roadbed drainage flow direction is as follows: the drainage flows into the drainage ditch 3 through the PVC plastic drainage pipe 4, and is collected at the bottom of the drainage ditch 3 through the longitudinal drainage pipe 11 to the inspection pit drainage ditch 10. Then, in the inspection pit drainage ditch 10, it flows into the integrated pipe ditch 8 through the drainage pipe trench.

[0048] In this embodiment, as Figure 6 As shown, the hardened ground surface 7 includes, from top to bottom, fine-grained asphalt concrete 13, tack coat 14, coarse-grained asphalt concrete 15, asphalt macadam seal coat 16, prime coat 17, 5% cement-stabilized gravel 18, and cement-lime soil 19.

[0049] Among them, the fine-grained asphalt concrete 13 adopts the material form AC-13C, the coarse-grained asphalt concrete 15 adopts the material form AC-25C, and the weight ratio of cement, lime and soil 19 is 4:16:80.

[0050] In this embodiment, the iron grate 6 is made of cast iron steel, with a length of 750mm and a width of 450mm. The width of the iron grate 6 connecting with the inner wall of the drainage ditch 3 is 105mm on each side.

[0051] In this embodiment, the angle steel bracket 5 is 6m long, and each angle steel bracket 5 can fully cover eight iron grates 6. In other embodiments, the length and width of the angle steel bracket 5 can be dynamically adjusted according to the actual on-site operation during the design stage.

[0052] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A corrosion-resistant railway maintenance yard structure, comprising a hardened ground (7), multiple drainage ditches (3) and multiple tracks (1), wherein a column-type inspection pit (2) is provided under the track (1), the drainage ditches (3) are respectively provided on both sides of the track (1), and an iron grate (6) is provided at the upper end of each drainage ditch (3), and a comprehensive pipe trench (8) is provided under the hardened ground (7), characterized in that: The hardened ground (7) adopts an asphalt pavement structure and is mixed with anti-corrosion agent. A transverse drainage slope (9) is provided on the hardened ground (7). The iron grate (6) is installed on the upper end of the drainage ditch (3) through multiple embedded parts (12); The drainage ditch (3) is made of C35P8 concrete and anti-corrosion coating. A PVC plastic drainage pipe (4) is installed inside the drainage ditch (3). The bottom of the drainage ditch (3) is connected to the inspection pit drainage ditch (10) at the bottom of the column inspection pit (2) through a longitudinal drainage pipe (11). The inspection pit drainage ditch (10) is connected to the integrated pipe ditch (8) through a drainage pipe ditch.

2. The corrosion-resistant railway maintenance yard structure according to claim 1, characterized in that: The PVC plastic drain pipe (4) is installed inside the side wall of the drainage ditch (3) near the track (1).

3. The corrosion-resistant railway maintenance yard structure according to claim 1, characterized in that: The PVC plastic drain pipe (4) is inclined, with the end of the PVC plastic drain pipe (4) closer to the track (1) being higher than the end closer to the hardened ground (7).

4. The corrosion-resistant railway maintenance yard structure according to claim 1, characterized in that: The drainage ditch (3) is connected to the outer wall of the column inspection pit (2) on one side and to the hardened ground (7) on the other side.

5. The corrosion-resistant railway maintenance yard structure according to claim 1, characterized in that: The upper surface of the iron grate (6) is flush with the upper surface of the drainage ditch (3).

6. The corrosion-resistant railway maintenance yard structure according to claim 1, characterized in that: The embedded parts (12) are respectively set on both sides of the upper end of the drainage ditch (3). The embedded parts (12) include angle steel brackets (5) and multiple reinforcing bars. The angle steel brackets (5) are set on the upper end of the reinforcing bars.

7. The corrosion-resistant railway maintenance yard structure according to claim 6, characterized in that: The angle steel bracket (5) has a rectangular shape, and the iron grate (6) is placed on the angle steel bracket (5).

8. The corrosion-resistant railway maintenance yard structure according to claim 6, characterized in that: Multiple iron grates (6) are laid on each of the angle steel brackets (5).

9. The corrosion-resistant railway maintenance yard structure according to claim 1, characterized in that: The longitudinal drainage pipe (11) is horizontally L-shaped.

10. The corrosion-resistant railway maintenance yard structure according to claim 1, characterized in that: The hardened surface (7) comprises, from top to bottom, fine-grained asphalt concrete (13), tack coat (14), coarse-grained asphalt concrete (15), asphalt macadam seal coat (16), prime coat (17), 5% cement-stabilized gravel (18), and cement-lime soil (19).

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