Reinforcement Structure and Reinforcement Methods for Railway Turnout Area

Abstract

This invention discloses a reinforcement structure and method for railway turnout areas, comprising a plurality of turnout sleepers and a metal channel between the sleepers. The metal channel is made of metal plate and includes a base plate, two side plates, and two extension plates. The two side plates are connected to both sides of the base plate, forming an upward-facing channel area together with the base plate. The two extension plates extend outward from the top of the two side plates respectively. The extension plates are fixedly connected to the corresponding turnout sleepers. The area below the metal channel is filled with concrete. This invention strengthens the connection structure between the tie rod groove, connecting rod groove, and turnout sleepers required by the turnout switch machine, effectively reinforcing thin concrete walls that cannot be reinforced with steel bars, while preventing concrete spalling and ensuring the safety of the track system.

Description

Technical Field

[0001] This invention relates to the field of underground railway construction technology, specifically to a structure and method for reinforcing the track bed structure in the turnout area. Background Technology

[0002] In underground railway track systems, tie rod grooves and connecting rod grooves are required in the turnout area between turnout sleepers to accommodate the switch machine. The track bed is generally made of reinforced concrete, but due to dimensional limitations: the width of the tie rod groove is typically required to be 350mm, and the width of the connecting rod groove is typically required to be 200mm; considering the stability requirements of the turnout structure system itself, the maximum design distance between the centers of two adjacent turnout sleepers on both sides of the tie rod groove is 650mm, and the maximum design distance between the centers of two adjacent turnout sleepers on both sides of the connecting rod groove is 575mm, while the bottom width of the turnout sleeper is 230mm. This determines that the minimum concrete thickness on the outer side of the turnout sleepers on both sides of the tie rod groove is only 35mm, and the minimum concrete thickness on the outer side of the turnout sleepers on both sides of the connecting rod groove is only 72.5mm.

[0003] The thinness of the concrete on the outer sides of the adjacent turnout sleepers on both sides of the tie rod groove and connecting rod groove, along with uncontrollable factors such as on-site construction errors, makes it virtually impossible to install reinforcing steel at these locations. In other words, the outer sides of the turnout sleepers on both sides of the tie rod groove and connecting rod groove are generally made of plain concrete. Consequently, defects such as concrete spalling and even separation of the turnout sleepers from the track bed are common, affecting the stability of the track system. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a method and structure for strengthening the track bed in the turnout area, so as to strengthen the strength of the switch machine tie rod groove and connecting rod groove and improve the stability of the track system.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is a railway turnout reinforcement structure, including a number of turnout sleepers and a metal trough between the turnout sleepers; the metal trough is made of metal plate and includes a bottom plate, two side plates and two extension plates; the two side plates are connected to both sides of the bottom plate and together with the bottom plate form an upward-facing trough area; the two extension plates extend outward from the top of the two side plates respectively; the extension plates are fixedly connected to the corresponding turnout sleepers; the area below the metal trough is filled with concrete.

[0006] A further technical solution is that the extension plate includes a horizontal plate extending outward from the top of the side plate, a vertical plate extending downward from the outer end of the horizontal plate, and a connecting plate extending outward from the bottom end of the vertical plate; the connecting plate is fixedly connected to the bottom of the corresponding turnout sleeper, and the vertical plate abuts against the inner side of the corresponding turnout sleeper.

[0007] A further technical solution is that the metal groove is a tie rod groove or a connecting rod groove; wherein, the bottom plate width of the tie rod groove is 340-360mm, the width of the horizontal plate is 30-40mm, the depth of the groove area is 140-160mm, the height of the vertical plate is 90-100mm, and the width of the connecting plate is at least 80mm; the bottom plate width of the connecting rod groove is 190-210mm, the width of the horizontal plate is 67.5-77.5mm, the depth of the groove area is 140-160mm, the height of the vertical plate is 90-100mm, and the width of the connecting plate is at least 80mm.

[0008] A further technical solution is that the metal plate is a 2-5mm thick stainless steel plate.

[0009] A further technical solution is that the upper surface of the metal groove is coated with 1-3mm thick insulating varnish.

[0010] The present invention also provides a method for strengthening the track bed in a turnout area, comprising the following steps:

[0011] S1: Install turnout sleepers at the switch machine pit and use auxiliary supports to fix the turnout sleepers;

[0012] S2: Fabricate a metal channel component, which is made of a metal plate and includes a bottom plate, two side plates, and two extension plates; the two side plates are connected to both sides of the bottom plate and together with the bottom plate form an upward-facing channel area; the two extension plates extend outward from the top of the two side plates respectively.

[0013] S3: Place the metal slot between the two corresponding turnout sleepers, and fix the extension plate to the corresponding turnout sleeper;

[0014] S4: Pour concrete into the bottom of the metal channel.

[0015] A further technical solution is that the extension plate includes a horizontal plate extending outward from the top of the side plate, a vertical plate extending downward from the outer end of the horizontal plate, and a connecting plate extending outward from the bottom end of the vertical plate; the connecting plate is fixedly connected to the bottom of the corresponding turnout sleeper, and the vertical plate abuts against the inner side of the corresponding turnout sleeper.

[0016] A further technical solution is that the metal groove is a tie rod groove or a connecting rod groove; wherein, the bottom plate width of the tie rod groove is 340-360mm, the width of the horizontal plate is 30-40mm, the depth of the groove area is 140-160mm, the height of the vertical plate is 90-100mm, and the width of the connecting plate is at least 80mm; the bottom plate width of the connecting rod groove is 190-210mm, the width of the horizontal plate is 67.5-77.5mm, the depth of the groove area is 140-160mm, the height of the vertical plate is 90-100mm, and the width of the connecting plate is at least 80mm.

[0017] A further technical solution is that the metal plate is a 2-5mm thick stainless steel plate.

[0018] A further technical solution is,

[0019] It also includes step S5: applying insulating varnish to the upper surface of the metal groove, wherein the thickness of the insulating varnish is 1-3 mm.

[0020] The railway turnout reinforcement structure and method of the present invention strengthens the connection structure between the tie rod groove, connecting rod groove and turnout sleeper required by the turnout switch machine, so that the thin concrete wall that cannot be reinforced can also be effectively strengthened, while preventing concrete spalling and ensuring the safety of the track system. Attached Figure Description

[0021] The technology of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] Figure 1 This is a schematic diagram of the branch area.

[0023] Figure 2 This is a schematic diagram of the railway turnout reinforcement structure of the present invention.

[0024] Figure 3 This is a structural schematic diagram of the tie rod groove and connecting rod groove of the present invention. Detailed Implementation

[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0026] like Figure 1 As shown, a switch machine needs to be installed in the turnout area of ​​the railway to enable trains to change tracks. A tie rod groove 7 and a connecting rod groove 6 must be reserved between the turnout sleepers 1 to provide for the tie rod and connecting rod of the switch machine to work.

[0027] like Figure 2 As shown, that is Figure 1According to the cross-sectional view along line BB, the railway turnout reinforcement structure of the present invention includes several turnout sleepers 1, and also includes stainless steel grooves disposed between the turnout sleepers 1, wherein the stainless steel grooves serve as tie rod grooves 7 or connecting rod grooves 6. Specifically, according to the underground railway construction specifications, this embodiment uses four rows of turnout sleepers 1, with one tie rod groove 7 and two connecting rod grooves 6 formed between the turnout sleepers 1.

[0028] The stainless steel channel is made of 3mm thick stainless steel plate. Depending on the actual construction and usage scenarios, it can be made of other metals or metal plates of different thicknesses, such as 2mm, 4mm, or 5mm aluminum alloy plates.

[0029] The stainless steel groove components are divided into tie rod groove component 4 and connecting rod groove component 3, which are used as tie rod groove 7 and connecting rod groove 6, respectively. Both have the same basic structure, with only the dimensions adjusted according to the application. Specifically, the stainless steel groove component structure includes a base plate 31 (or 41), two side plates 32 (or 42), and two extension plates. The two side plates 32 (or 42) are connected to both sides of the base plate 31 (or 41) and together with the base plate 31 (or 41), they form an upward groove area, which serves as the space for the tie rod groove 7 or connecting rod groove 6. The two extension plates extend outward from the top of the two side plates 32 (or 42), respectively. The extension plates are fixedly connected to the corresponding fork bolster 1. The extension plates specifically include a horizontal plate 33 (or 43) extending outward from the top of the side plate 32 (or 42), a vertical plate 34 (or 44) extending downward from the outer end of the horizontal plate 33 (or 43), and a connecting plate 35 (or 45) extending outward from the bottom end of the vertical plate 34 (or 44). The connection between the extension plate and the turnout sleeper 1 is specifically achieved by fixing the connecting plate 35 (or 45) below the corresponding turnout sleeper 1. The connecting plate 35 (or 45) can be bonded to the bottom of the turnout sleeper 1 using epoxy resin, or other fixing methods can be used. The vertical plate 34 (or 44) abuts against the inner side of the corresponding turnout sleeper 1, i.e., the side of the turnout sleeper 1 closest to the stainless steel groove. The horizontal plate 33 (or 43), the vertical plate 34 (or 44), and the concrete filling this space constitute the sidewall of the tie rod groove 7 or connecting rod groove 6. Even if reinforcement cannot be installed due to size limitations, strength can still be guaranteed. Alternatively, the vertical plate 34 (or 44) and the connecting plate 35 (or 45) can be omitted, and the horizontal plate 33 (or 43) can be directly fixed to the side of the turnout sleeper 1. This should also fall within the scope of protection of this invention. This method can also achieve the effect of reinforcing the sidewall of the groove, but the reinforcement strength is slightly weaker, and it is not conducive to the installation and positioning of the groove.

[0030] The area below the stainless steel trough is filled with concrete, that is, the area below the bottom plate 31 (or 41), the area below the horizontal plate 33 (or 43), and the area below the connecting plate 35 (or 45) is filled with concrete to form the track bed.

[0031] Specifically, such as Figure 3As shown, the width of the base plate 31 (or 41) of the 7 tie rod groove pieces is 340-360mm, and 350mm in this embodiment; the width of the horizontal plate 33 (or 43) is 30-40mm, and 35mm in this embodiment; the depth of the groove area is 140-160mm, and 150mm in this embodiment; the height of the vertical plate 34 (or 44) is 90-100mm, and 100mm in this embodiment; the width of the connecting plate 35 (or 45) is at least 80mm, and 100mm in this embodiment. The bottom plate 31 (or 41) of the six connecting rod slots has a width of 190-210mm, 200mm in this embodiment; the horizontal plate 33 (or 43) has a width of 67.5-77.5mm, 72.5mm in this embodiment; the groove area has a depth of 140-160mm, 150mm in this embodiment; the vertical plate 34 (or 44) has a height of 90-100mm, 100mm in this embodiment; and the connecting plate 35 (or 45) has a width of at least 80mm, 100mm in this embodiment. The horizontal plate 33 (or 43) is generally positioned at the overall horizontal plane of the track bed. According to technical specifications, the turnout sleeper 1 is generally 130mm high. The 100mm high vertical plate 34 (or 44) ensures that the turnout sleeper 1 is 30mm higher than the top surface of the track bed, increasing the clearance between the bottom of the rail and the top surface of the track bed, which can reduce the diffusion of stray current. The connecting plate 35 (or 45) has sufficient width to allow for more thorough bonding of the remaining turnout sleepers 1, and to make the positions of the entire tie rod groove 7 and connecting rod groove 6 more precise. The width of the base plate 31 (or 41) and the depth of the side plates provide sufficient space for the tie rod groove 7 and connecting rod groove 6 to meet the installation clearance requirements of the signal switch machine. It should be noted that the horizontal plate 33 (or 43) only refers to its extension direction being roughly horizontal, and is used as the horizontal base surface of the track bed according to construction needs. However, it does not mean that the horizontal plate 33 (or 43) must be set completely horizontally. Even if it extends outward at an angle, it should be understood as the horizontal plate 33 (or 43) of this invention, falling within the protection scope of this invention. The upper surface of the metal groove is coated with 1-3mm thick insulating varnish (not shown in the figure). In this embodiment, it is 2mm thick to avoid short circuits between the rail and the channel steel.

[0032] The present invention also provides a method for reinforcing railway turnout areas, comprising the following steps:

[0033] S1: Install turnout sleeper 1 at the turnout pit 5 and fix turnout sleeper 1 with auxiliary support (not shown in the figure);

[0034] S2: Fabricate a stainless steel channel component, which is made of stainless steel sheet. The specific shape and structure of the stainless steel channel component are the same as in the above embodiment, including a base plate 31 (or 41), two side plates, and two extension plates. The two side plates are connected to both sides of the base plate 31 (or 41) and together with the base plate 31 (or 41) form an upward-facing channel area. The two extension plates extend outward from the top of the two side plates, respectively. It should be noted that there is no specific order between steps S1 and S2; these two preparatory steps only need to be completed before formal installation.

[0035] S3: Place the stainless steel groove between the two corresponding turnout sleepers 1, and fix the extension plate to the corresponding turnout sleeper 1; specifically, the extension plate of the stainless steel groove has a horizontal plate 33 (or 43), a vertical plate 34 (or 44) and a connecting plate 35 (or 45), and the connecting plate 35 (or 45) of the extension plate is bonded to the bottom of the turnout sleeper 1 with epoxy resin to achieve a fixed connection.

[0036] S4: Concrete is poured into the bottom of the stainless steel trough and vibrated to avoid empty lifting. The concrete forms the track bed.

[0037] S5: Apply insulating varnish to the upper surface of the stainless steel tank, wherein the thickness of the insulating varnish is 2mm.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A reinforced structure for railway turnout areas, comprising several turnout sleepers, characterized in that: It also includes metal grooves disposed between the turnout sleepers; the metal grooves are made of metal plates and include a base plate, two side plates, and two extension plates; the two side plates are connected to both sides of the base plate and together with the base plate form an upward groove area; the two extension plates extend outward from the top of the two side plates respectively; the extension plates are fixedly connected to the corresponding turnout sleepers; the area below the metal grooves is filled with concrete to form a track bed; the extension plates include a horizontal plate extending outward from the top of the side plates, a vertical plate extending downward from the outer end of the horizontal plate, and a connecting plate extending outward from the bottom end of the vertical plate; the connecting plate is fixedly connected to the bottom of the corresponding turnout sleeper, and the vertical plate abuts against the inner side of the corresponding turnout sleeper; the metal grooves are tie rod grooves or connecting rod grooves; wherein, the width of the base plate of the tie rod groove is... The width of the horizontal plate of the pull rod groove is 30-40mm, the groove depth is 140-160mm, the vertical plate height is 90-100mm, and the connecting plate width is at least 80mm; the width of the bottom plate of the connecting rod groove is 190-210mm, the width of the horizontal plate is 67.5-77.5mm, the groove depth is 140-160mm, the vertical plate height is 90-100mm, and the connecting plate width is at least 80mm; the metal plate is 2-5mm thick stainless steel; the upper surface of the metal groove is coated with 1-3mm thick insulating paint.

2. A method for reinforcing railway turnout areas, characterized in that, Includes the following steps: S1: Install turnout sleepers at the switch machine pit and use auxiliary supports to fix the turnout sleepers; S2: Fabricate a metal channel component, which is made of a metal plate and includes a bottom plate, two side plates, and two extension plates; the two side plates are connected to both sides of the bottom plate and together with the bottom plate form an upward-facing channel area; the two extension plates extend outward from the top of the two side plates respectively. S3: Place the metal slot between the two corresponding turnout sleepers, and fix the extension plate to the corresponding turnout sleeper; the extension plate includes a horizontal plate extending outward from the top of the side plate, a vertical plate extending downward from the outer end of the horizontal plate, and a connecting plate extending outward from the bottom end of the vertical plate; the connecting plate is fixedly connected to the bottom of the corresponding turnout sleeper, and the vertical plate abuts against the inner side of the corresponding turnout sleeper. S4: Concrete is poured into the bottom of the metal trough to form the track bed.

3. The method for reinforcing railway turnout areas according to claim 2, characterized in that: The metal groove is either a tie rod groove or a connecting rod groove; wherein, the bottom plate width of the tie rod groove is 340-360mm, the width of the horizontal plate of the tie rod groove is 30-40mm, the depth of the groove area of ​​the tie rod groove is 140-160mm, the height of the vertical plate of the tie rod groove is 90-100mm, and the width of the connecting plate of the tie rod groove is at least 80mm; the bottom plate width of the connecting rod groove is 190-210mm, the width of the horizontal plate of the connecting rod groove is 67.5-77.5mm, the depth of the groove area of ​​the connecting rod groove is 140-160mm, the height of the vertical plate of the connecting rod groove is 90-100mm, and the width of the connecting plate of the connecting rod groove is at least 80mm.

4. The method for reinforcing railway turnout areas according to claim 2, characterized in that: The metal plate is a 2-5mm thick stainless steel plate.

5. The method for reinforcing railway turnout areas according to claim 2, characterized in that: It also includes step S5: applying insulating varnish to the upper surface of the metal groove, wherein the insulating varnish has a thickness of 1-3 mm.

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