Assembled embedded track and construction method thereof

Abstract

According to the assemblable embedded track and the construction method thereof, on the basis that it is guaranteed that bolts are connected with pre-embedded sleeves corresponding to sleepers through through holes in a bottom plate, side plates on the two sides of a steel tank move outwards and are longitudinally disconnected at the positions corresponding to the pre-embedded sleeves, so that space is formed, and the inner sides of the disconnected positions of the side plates are connected through insulating plates; the insulating plates are arranged on the inner sides of the side plates on the two sides, the side plates on the two sides of the steel tank move outwards, namely, the insulating plates are additionally arranged between the steel tank and the steel rail, the clearance size in the steel tank is increased, and the steel tank is prevented from being damaged. The distance between the steel tank and the steel rail is increased; even if a large construction error occurs and the steel rail is in contact with the insulating plate, the minimum distance between the steel rail and the steel tank can still be forcibly guaranteed to be the thickness gap of the insulating plate, the insulativity of the steel rail and the steel tank is guaranteed, and the sparking risk is reduced.

Description

Technical Field

[0001] This invention relates to the field of embedded track technology, and in particular to an assemblable embedded track and its construction method. Background Technology

[0002] Embedded rails are widely used in domestic rail transit engineering projects. In recent years, a new type of embedded rail structure has emerged, which involves installing steel channels on the top surface of the sleepers and filling these channels with elastic material to lock the rails in place. This structure offers good vibration and noise reduction, but it still has some drawbacks, as follows:

[0003] The steel channel is fixed via existing sleeper bolt holes, and its size is limited by the bolt hole spacing. In some urban rail transit lines, the lateral spacing of the pre-embedded bolt holes on the sleepers is small. After installing the steel channel, the net clearance within the channel reaches its minimum limit, and the theoretical gap between the channel sidewall and the bottom of the rail is small. This can easily lead to electrical connection between the rail and the channel, potentially causing sparking during later operation. Furthermore, there are inherent errors during construction, requiring very strict precision control, which significantly impacts the on-site construction progress. While the steel channel is supported by the sleepers, the bottom of the channel remains suspended between sleepers, resulting in significant differences in rail stiffness at different locations, affecting vehicle smoothness. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies, such as the small lateral spacing of the pre-embedded bolt holes of the sleepers, the minimum net size of the groove after installation, and the small theoretical gap between the side wall of the groove and the bottom of the rail, which will easily lead to electrical connection between the rail and the groove, and the risk of arcing due to the electrical connection between the rail and the groove. This invention provides an assemblable embedded rail and its construction method.

[0005] In a first aspect, the present invention provides an mountable embedded track, comprising a track bed slab, sleepers, rails, and steel channels. A row of sleepers is arranged at intervals along the longitudinal direction of the track bed slab on top of the track bed slab, corresponding to each rail. Embedded sleeves are provided on both transverse sides of the sleepers. The steel trough includes a plurality of base plates spaced longitudinally along the track bed slab and side plates fixedly connected to the transverse sides of the base plates. The bottom surface of the side plates contacts the top surface of the base plates, and the outer ends of the side plates located at both ends of the base plates are aligned with the corresponding ends of the base plates. The base plate is provided with through holes corresponding to the pre-embedded sleeves on both sides of a row of sleepers. The base plate is connected to the sleepers by bolts passing through the corresponding pre-embedded sleeves and through holes. The side plates on each side are spaced longitudinally along the base plate. The spacing of the side plates on each side is aligned with the pre-embedded sleeve on the corresponding side. Adjacent side plates on each side are connected by an insulating plate. The bottom surface of the insulating plate contacts the top surface of the base plate. The insulating plate on each side is located between the corresponding side plate and the rail. The rails are fixed between the side plates on both sides and between the insulating plates on both sides by casting elastic material.

[0006] Preferably, the side plates on the outer sides of the two rails on the same line are vertical plates of the first angle steel. The vertical plates and horizontal plates of the first angle steel are reinforced by reinforcing ribs. The horizontal plates of the first angle steel are set away from the corresponding rails. The horizontal plates of the first angle steel are fitted and connected to the corresponding bottom plate so that the first angle steel and the bottom plate are combined to form a first component. The inner side plates of the two rails on the same line are vertical plates of the second angle steel, and the vertical plates and horizontal plates of the second angle steel are reinforced by reinforcing ribs; the horizontal plates of the second angle steel are set away from the corresponding rails, and the horizontal plates of the second angle steel are detachably attached to the corresponding base plates.

[0007] Preferably, the top elevation of the insulating plate is the same as that of the side plate.

[0008] Preferably, the length of the insulating plate is greater than the spacing between adjacent side plates on the same side.

[0009] Preferably, the insulating plate is connected to the adjacent side plate by rivets, and the rivets have insulating properties.

[0010] Preferably, the thickness of the insulating plate is 4mm-6mm.

[0011] Preferably, the rail feet are coated with insulating varnish.

[0012] Preferably, a support block is provided between two adjacent sleepers along the longitudinal direction of the track bed slab. The bottom of the support block supports the track bed slab, and the top of the support block supports the base plate. There is a reserved gap between the support block and the two adjacent sleepers along the longitudinal direction of the track bed slab.

[0013] Preferably, insulating clips are provided on the outer ends of the side plates at the ends of the track bed slab and the corresponding ends of the bottom plate, and sealing end plates are installed on the outer sides of the insulating clips.

[0014] In a second aspect, the present invention provides a construction method for an assemblable embedded track, for constructing such an track, comprising the following steps: S1: Connect the vertical plates of the longitudinally adjacent first angle steels on the side away from the horizontal plate with an insulating plate to form a first mounting part, and connect the vertical plates of the longitudinally adjacent second angle steels on the side away from the horizontal plate with the insulating plate to form a second mounting part; S2: Remove some of the fasteners that fix the rail, pass the base plate of the first mounting part through the rail where the fasteners were removed, so that the through holes on both sides of the base plate are aligned with the pre-embedded sleeves on both sides of the sleeper, and then fix the first mounting part to the corresponding sleeper by passing the bolts through the pad, through the through holes and pre-embedded sleeves. Then, the cross plate of the second angle steel of the second mounting part is detachably attached to the corresponding bottom plate, away from the corresponding rail, so that the steel channel corresponding to this part of the rail is installed and the rail is located inside the steel channel. S3: Repeat step S2 until all fasteners have been removed and the steel channel has been installed. S4: Install fasteners inside the steel channel, adjust the geometric position of the rail and fix the rail, and then apply adhesive to the side wall of the steel channel and both sides of the rail web. Insulating clips are installed on the end face of the steel channel at the end of each track bed slab, and sealing end plates are installed on the outside of the insulating clips. Foam strips are used to seal the gaps between the steel channels of the track bed slab. S5: The elastic material is mixed and stirred evenly on site and then poured into the inside of the steel trough. The bottom and sides of the rail and all gaps inside the steel trough are filled and compacted to achieve elastic locking of the rail.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention provides an assemblable embedded rail. While ensuring that bolts connect to the pre-embedded sleeves corresponding to the sleepers through through holes in the base plate, the side plates on both sides of the steel channel are moved outwards and longitudinally disconnected at the corresponding pre-embedded sleeve positions. This creates space for connection via an insulating plate on the inner side of the disconnected side plates, with the bottom surfaces of both the insulating plate and the side plates contacting the top surface of the base plate, forming a closed steel channel on both sides. This provides conditions for casting elastic material. Since the insulating plate is located inside the side plates on both sides, the outward movement of the side plates on both sides of the steel channel, i.e., adding an insulating plate between the steel channel and the rail, increases the clear space within the steel channel and the distance between the steel channel and the rail. It also reduces the precision requirements for on-site construction. Even if significant construction errors occur, causing the rail to contact the insulating plate, the minimum distance between the rail and the steel channel is still guaranteed to be the thickness of the insulating plate gap, ensuring the insulation between the rail and the steel channel and reducing the risk of sparking.

[0016] 2. This invention provides a construction method for an assemblable embedded rail. First, the vertical plates of adjacent first angle steels on the side facing away from the horizontal plate are connected by an insulating plate to form a first mounting part. Then, the vertical plates of adjacent second angle steels on the side facing away from the horizontal plate are connected by the same insulating plate to form a second mounting part, improving the convenience of steel channel installation. By removing some fasteners that fix the rail and sequentially installing the first and second mounting parts to form a partial steel channel, the process of replacing fasteners with the steel channel is safer, preventing injury from rail movement. After adjusting the rail position to fix the rail to the steel channel, adhesive is applied to the sidewalls of the steel channel and both sides of the rail web to improve the subsequent bonding with elastic materials. After installing insulating clips and foam strips, elastic material is poured to fill all gaps between the bottom and sides of the rail and the inside of the steel channel, achieving elastic locking of the rail. This construction process is simpler and faster, and better ensures construction quality. Attached Figure Description

[0017] Figure 1 This is a horizontal elevation view of an assembly-fitted track (the elastic material between the steel channel and the steel rail is not shown). Figure 2 This is a first axonometric schematic diagram of a mountable embedded rail (showing only the relationship between the steel channel and the track bed slab corresponding to one rail). Figure 3 for Figure 2 Schematic diagram of the structure of the insulating card; Figure 4 This is a second axonometric diagram of a mountable embedded rail (showing only the relationship between the steel channel and the track bed slab corresponding to one rail). Figure 5 Axonal sectional view of an mountable embedded track; Figure 6 A lateral elevation section view of the mountable embedded track; Figure 7 This is a schematic diagram of the steel channel from the axial side. Figure 8 This is a top view of the steel channel; Figure 9 This is a schematic diagram of the horizontal elevation of the steel channel.

[0018] Markings in the diagram: 1. Track slab; 2. Sleeper; 21. Embedded sleeve; 3. Rail; 31. Insulating paint; 32. Insulating pad; 4. Steel channel; 41. Base plate; 411. Through hole; 412. Bolt; 42. First angle steel; 421. Vertical plate; 422. Horizontal plate; 423. Reinforcing rib plate; 43. Second angle steel; 5. Insulating plate; 51. Rivet; 6. Support block; 61. Reserved gap; 7. Insulating clip; 81. First mounting part; 82. Second mounting part. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0020] Unless otherwise specified, the terms "upper," "lower," "left," "right," "center," "inner," and "outer," etc., used in the description of specific embodiments of the present invention to indicate orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the product / equipment / device is usually placed during use. These terms are merely for the purpose of facilitating the description of the present invention or simplifying the description in specific embodiments, and for enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a particular device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on the present invention.

[0021] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," "parallel," and "coaxial" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, parallel, or coaxial. Slight tilt or deviation is permissible, as long as it does not affect the normal function of the relevant component. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," not that the structure must be perfectly horizontal; a slight tilt is acceptable. "Coaxial" means that two components are arranged as coaxially as possible, allowing them to move coaxially or approximately coaxially when their relative positions change. Alternatively, it can be simplified to mean that the corresponding device / component / element, when arranged in "horizontal," "vertical," "suspended," "parallel," or "coaxial" directions, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. For example, the deviation in the "coaxial" direction is controlled within 0.2-1mm, preferably within 0.2-0.5mm. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the solution of the present invention.

[0022] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0023] Furthermore, in the description of the embodiments of the present invention, "several", "more than", and "a number of" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0024] Furthermore, in the description of the technical solution of this invention, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "provided with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to connection methods commonly used in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0025] Example 1 like Figures 1-9 As shown, an assembleable embedded track includes a track bed 1, sleepers 2, rails 3, and steel channels 4. The track bed 1 and sleepers 2 are existing technologies. Multiple track bed 1s can be arranged in the track's travel direction, with unit seams formed between longitudinally adjacent track bed 1s. A row of spaced sleepers 2 is arranged on the top of each track bed 1 along its longitudinal direction, corresponding to each rail 3. Figure 4 and Figure 5 As shown; a typical railway line has at least two rails 3, spaced laterally to accommodate the wheels on both sides of the train, requiring two rows of sleepers 2. Of course, there are also cases where two or more lines run parallel, in which case the number of sleepers 2 is determined by the number of rails 3, and each sleeper 2 has pre-embedded sleeves 21 on both sides to accommodate fasteners on both sides of the rails 3 for securing them. Figure 5 As shown, the pre-embedded sleeves 21 on both sides of each sleeper 2 are positioned differently in the longitudinal direction, that is, they are asymmetrically set on both sides of the transverse direction.

[0026] like Figure 1 and Figure 2 As shown, the steel trough 4 includes a plurality of base plates 41 spaced longitudinally along the track bed slab 1 and side plates fixedly connected to the transverse sides of the base plates 41. The bottom surface of the side plates contacts the top surface of the base plates 41, that is, the two side plates form a trough-shaped structure with the base plates and are part of the steel trough 4. The outer ends of the side plates located at both ends of the base plates 41 are aligned with the corresponding ends of the base plates 41, that is, the two ends of the base plates are aligned with the corresponding ends of the side plates at both ends. Figure 7 As shown; Figure 2 and Figure 5 As shown, the track bed slab 1 has only two spaced bottom plates 41 in the longitudinal direction, and the space is small; and the distance between the ends of the two bottom plates 41 corresponding to the two ends of the track bed slab 1 and the corresponding end faces of the track bed slab 1 is small, which ensures stable support for the rail 3.

[0027] The base plate 41 is provided with through holes 411 corresponding to the pre-embedded sleeves 21 on both sides of the transverse direction of a row of sleepers 2. That is, after the base plate 41 is placed on the sleepers 2, the pre-embedded sleeves 21 can correspond to the through holes 411. (See reference) Figure 7 and Figure 8 As shown. The base plate 41 is connected to the sleeper 2 by bolts 412 passing through the corresponding pre-embedded sleeve 21 and through hole 411, so that the steel channel 4 can be stably connected to the sleeper 2. That is, there is no need to set fasteners, but the steel channel 4 is used to connect to the sleeper 2 instead of fasteners.

[0028] The side plates on each side are longitudinally spaced along the base plate 41, and the spacing between the side plates on each side is aligned with the pre-embedded sleeve 21 on the corresponding side. That is, the spacing between two side plates is aligned with the pre-embedded sleeve 21. Adjacent two side plates on each side are connected by an insulating plate 5, that is, the insulating plate 5 is aligned with the pre-embedded sleeve 21. The bottom surface of the insulating plate 5 contacts the top surface of the base plate 41, so that the two insulating plates 5 and the base plate 41 form a groove-shaped structure as part of the steel groove 4. Figure 7 As shown, by setting an insulating plate 5 between two adjacent side plates in the longitudinal direction, the side plates in the longitudinal direction can be connected to form a whole plate, which, together with the bottom plate, forms a section of the steel channel 4; in an optional embodiment, the insulating plate 5 is at the same top elevation as the side plate, such as... Figure 1 As shown, this ensures that the formed steel channel 4 has the same height at different longitudinal positions, facilitating the pouring of elastic material at the same height. Furthermore, the insulating plate 5 is located inside the side plates on both sides and between the corresponding side plate and the rail, meaning that an insulating plate distance will inevitably separate the side plate from the rail. This reduces the possibility of electrical connection between the rail and the side plate, thereby reducing the risk of sparking and improving operational safety. In an optional embodiment, the thickness of the insulating plate 5 is 4mm-6mm. While reducing the possibility of electrical connection between the rail and the side plate, this ensures the strength of the insulating plate 5 itself, guarantees safety during the pouring of elastic material, and avoids excessive thickness that could affect the connection between the bolt 412 and the base plate 41 and the sleeper 2. The insulating plate can be made of insulating materials such as nylon sheets, which also possess a certain strength.

[0029] like Figure 1As shown, the rail 3 is fixed between the side plates on both sides and between the insulating plates 5 on both sides by casting elastic material. The steel channel 4 and the elastic material can replace fasteners to fix the rail 3. An insulating barrier is formed between the rail 3 and the base plate 41. If there is a gap between the rail 3 and the base plate 41, elastic material is cast into the gap, so that the rail 3 and the base plate 41 are isolated by the elastic material, forming an insulating structure. The elastic material can be polyurethane or epoxy resin, etc. An insulating pad 32 can also be set between the rail 3 and the base plate 41; however, casting elastic material makes construction more convenient, and the overall bonding after casting the elastic material is better, resulting in higher track operation safety and better comfort.

[0030] In an optional embodiment, the rail feet of the rail 3 are coated with insulating varnish 31 to further increase the insulation of the rail.

[0031] In optional implementations, such as Figure 1 , Figure 5 and Figure 6 As shown, the outer side plates of the two rails 3 on the same line are vertical plates of the first angle steel 42. The vertical plate 421 and the horizontal plate 422 of the first angle steel 42 are reinforced by a reinforcing rib plate 423. Figure 4 As shown, reinforcing ribs 423 are welded at intervals between the vertical plate 421 and the horizontal plate 422 of the first angle steel 42 along its length to strengthen the first angle steel 42, resisting the lateral stress of the elastic material poured into the steel groove, and reducing the thickness of the vertical plate 421, allowing the vertical plate 421 to move further outward away from the rail, thus improving insulation performance. The horizontal plate 422 of the first angle steel 42 is positioned away from the corresponding rail 3, and the horizontal plate 422 of the first angle steel 42 is fitted and connected to the corresponding base plate 41 so that the first angle steel 42 and the base plate 41 are combined to form a first component; the first angle steel 42 and the base plate 41 can be fitted and connected by welding.

[0032] The inner side plates of the two rails 3 on the same line are the vertical plates 421 of the second angle steel 43. The vertical plates 421 and the horizontal plates 422 of the second angle steel 43 are reinforced by reinforcing ribs 423. The reinforcing ribs 423 are welded at intervals between the vertical plates 421 and the horizontal plates 422 along the length direction of the second angle steel 43 to reinforce the second angle steel 43, so as to resist the lateral stress of the elastic material poured in the steel groove, and to reduce the thickness of the vertical plates 421, so that the vertical plates 421 can be moved further outward away from the rails and improve the insulation performance. The horizontal plates 422 of the second angle steel 43 are set away from the corresponding rails 3. The horizontal plates 422 of the second angle steel 43 are detachably attached to the corresponding base plate 41 and can be connected by bolts.

[0033] In a preferred embodiment, the horizontal plates 422 of the first angle steel 42 that are longitudinally adjacent are connected in the longitudinal direction, and the connection point is provided with a corresponding through hole 411 of the base plate 41. The horizontal plates 422 of the second angle steel 43 that are longitudinally adjacent are connected in the longitudinal direction, and the connection point is provided with a corresponding through hole 411 of the base plate 41. The bolt 412 can pass through the pad, the corresponding through hole of the horizontal plate 422, and the corresponding through hole 411 of the base plate 41 from top to bottom and then be threaded to the corresponding embedded sleeve 21, so as to fix the first angle steel 42, the base plate 41 and the sleeper 2, and to fix the second angle steel 43, the base plate 41 and the sleeper 2.

[0034] The aforementioned steel trough structure allows the base plate to pass between the rail and sleeper without removing the rail, as the thickness of the base plate is less than the space between the rail and sleeper after the fasteners have been removed. This enables the installation of the steel trough 4 by passing the base plate between the rail and sleeper, thus improving on-site construction safety.

[0035] In optional implementations, such as Figure 8 As shown, the length of the insulating plate 5 is greater than the spacing between adjacent side plates on the same side, so that the insulating plate 5 is located inside the side plate, forming an overlap, which improves the connection strength between the side plate and the insulating plate 5; and the insulating plate 5 is located between the side plate and the rail, which can better form an isolation between the side plate and the rail, improving the insulation performance. Figure 8 and Figure 9 As shown, the insulating plate 5 is connected to the adjacent side plate by rivets 51. The rivets 51 have insulating properties. Furthermore, the rivets 51 are drive rivets, capable of driving the insulating plate and side plate from the outside to the inside of the side plate to fix them together. Figure 9 As shown, the insulating board 5 is connected to the side plate at each end by a 5mm hammer rivet at the top and bottom, ensuring the connection performance between the insulating board and the side plate. The hammer rivet connection is stable and reliable, the riveting speed is fast, and no special tools are required; an ordinary hammer or nail hammer is sufficient.

[0036] The mountable embedded rail described in this embodiment, while ensuring that the bolts 412 are connected to the pre-embedded sleeves 21 corresponding to the sleepers 2 through the through holes 411 on the base plate 41, is longitudinally disconnected by moving the side plates on both sides of the steel channel 4 outward and at the corresponding pre-embedded sleeves 21. This creates space for the insulating plate 5 to connect the side plates at the disconnection point, and the bottom surfaces of the insulating plate 5 and the side plates are in contact with the top surface of the base plate 41, forming a closed steel channel on both sides. This provides conditions for casting elastic material. Since the insulating plate 5 is located inside the side plates on both sides, the outward movement of the side plates on both sides of the steel channel 4, i.e., adding an insulating plate between the steel channel and the rail, increases the net clearance size inside the steel channel and the distance between the steel channel and the rail. It also reduces the on-site construction accuracy requirements. Even if there is a large construction error that causes the rail to contact the insulating plate, it can still force the minimum distance between the rail and the steel channel to be the thickness of the insulating plate gap, ensuring the insulation between the rail and the steel channel and reducing the risk of sparking.

[0037] In optional implementations, such as Figures 1-4 As shown, insulating clips 7 are provided on the outer ends of the side plates at the ends of the track bed slab 1 and the corresponding ends of the bottom plate 41, which can insulate the ends, and as... Figure 3 As shown, the insulating card consists of two parts. One part can be nested at the end of the first angle steel and the base plate on one side, and the other part can be nested at the end of the second angle steel and the base plate on the other side. The two parts can be snapped together in the middle. A sealing end plate is installed on the outside of the insulating card 7, which can improve the sealing performance and provide better conditions for the casting of elastic materials.

[0038] In optional implementations, such as Figure 2 , Figure 4 and Figure 5 As shown, a support block 6 is provided between two adjacent sleepers 2 along the longitudinal direction of the track bed slab 1. The bottom of the support block 6 supports the track bed slab 1, and the top of the support block 6 supports the bottom of the base plate 41. There is a reserved gap 61 between the support block 6 and the two adjacent sleepers 2 along the longitudinal direction of the track bed slab 1 to facilitate lateral drainage of the track bed. The support block is provided at the bottom of the steel channel between the originally longitudinally adjacent sleepers 2, which is in a suspended position. This improves the uniformity of vertical stiffness of the rail at different positions, realizes continuous rail support, improves vehicle smoothness, and enhances vehicle ride comfort.

[0039] In this embodiment, the mountable embedded rail has a broken side plate at the bolt location of the steel channel, reserving a bolt installation position. An insulating plate is installed on the inner side of the broken side plate. The height of the insulating plate is the same as the height of the steel channel side plate, and the length of the insulating plate is greater than the broken length of the steel channel side plate to facilitate the connection between the insulating plate and the steel channel side plate. The insulating plate and the steel channel side plate are connected by rivets, bolts, or other methods. The rivet position needs to be a certain distance away from the rail foot to prevent electrical connection between the rivet and the rail foot. By setting the insulating plate, the net clearance of the inner wall of the steel channel is increased. During on-site construction, even if construction deviations cause the rail to contact the insulating plate, there will still be a safety distance of at least the thickness of the insulating plate between the rail foot and the steel channel side plate. After pouring elastic material into the channel, the insulation requirements of the line can be more effectively met. Adding an insulating plate can reduce the precision requirements on the construction site, improve structural adaptability, reduce construction costs, and thus greatly improve on-site construction efficiency. The rail foot area is sprayed with insulating paint, and the spraying range should cover the side, bottom, and top surfaces of the rail foot for a certain distance to further improve the insulation between the rail and the steel channel side plate. The elastic material at the end of the unit joint between the track slabs 1 is flush with the end of the steel channel. Since the distance between the steel channel and the rail foot 3 is relatively short, insulating clips are installed at the end of the steel channel to completely wrap it, increasing the insulation distance between the rail and the end of the steel channel. Support blocks are installed at the bottom of the steel channel between longitudinally adjacent sleepers to increase the vertical stiffness of the steel channel between them, achieving continuous support at the bottom of the rail. This ensures that the vertical stiffness of the rail is basically consistent in all parts, reducing rail dynamic displacement and improving vehicle comfort. The steel channel adopts an assemblable design. The base plate is welded to the first angle steel to form the first component, and the second component is directly composed of the second angle steel with welded stiffening plates. The first and second components are connected by bolts to form an assembled steel channel. The rail is placed inside the steel channel and secured with elastic material. The assemblable steel channel construction eliminates the need to move the rail, improving on-site construction safety.

[0040] Example 2 A construction method for an assemblable embedded track, used for constructing the assemblable embedded track described in Example 1, includes the following steps: S1: The vertical plates 421 of the longitudinally adjacent first angle steels 42 are connected to the side away from the horizontal plate 422 by an insulating plate 5 to form a first mounting part 81, and the vertical plates 421 of the longitudinally adjacent second angle steels 43 are connected to the side away from the horizontal plate 422 by the insulating plate 5 to form a second mounting part 82. Specifically, after sandblasting and rust removal inside the steel channel, an insulating plate is installed on the inside of the disconnected side plate. Corresponding riveting holes are provided on the insulating plate and the steel channel side plate. After aligning the mounting holes of the insulating plate with the openings on the steel channel side plate, rivets are installed in the holes to rivet and fix the insulating plate to the steel channel side plate. Here, the steel channel side plate refers to the vertical plate 421 of the first angle steel 42 and the second angle steel 43. This step can be completed in the factory, thereby reducing on-site operation procedures and construction time.

[0041] S2: Remove some of the fasteners fixing the rail 3, and pass the base plate 41 of the first mounting part 81 under the rail 3 where the fasteners were removed, so that the through holes 411 on both sides of the base plate 41 are aligned with the pre-embedded sleeves 21 on both sides of the sleeper 2. Then, fix the first mounting part 81 to the corresponding sleeper 2 by passing the bolts 412 through the pad, through the through holes 411 and the pre-embedded sleeves 21. There is a gap between the base plate 41 and the bottom of the rail 3. Then, the horizontal plate 422 of the second angle steel 43 of the second mounting part 82 is detachably attached to the corresponding bottom plate 41 away from the corresponding rail 3, so that the steel groove 4 corresponding to this part of the rail 3 is installed and the part of the rail 3 is located inside the part of the steel groove 4. S3: Repeat step S2 until all fasteners are removed and steel channel 4 is installed. Steps S2 and S3 involve alternating removal of fasteners within a single construction period to prevent rail movement and potential injury from complete fastener removal. For example, remove two sets of fasteners every six sets, and first remove rust from the rail web area. Install a buffer pad on the top surface of the sleeper, starting with the first mounting part 81. The base plate included in the first mounting part must pass through the bottom of the rail and be placed on the buffer pad. Install support blocks at the bottom of the steel channel between longitudinally adjacent sleepers, and then install the second mounting part 82. The first mounting part and the second mounting part 82 are fixedly connected with bolts. This alternating process continues until all fasteners within the construction area are removed and the steel channel installation is completed.

[0042] S4: Install fasteners inside the steel channel 4, adjust the geometric position of the rail 3 and fix the rail 3. After the geometric position of the steel channel and the rail is adjusted, apply adhesive to the side wall of the steel channel 4 and both sides of the rail web of the rail 3. An insulating clip 7 is installed on the end face of the steel channel 4 at the end of each track bed slab 1. A sealing end plate is installed on the outside of the insulating clip 7. Foam strips are used to seal the gaps between the steel channels 4 of the track bed slab 1. S5: The elastic material is mixed and stirred evenly on site, and then slowly and evenly poured into the inside of the steel trough 4 to fill all gaps between the bottom and sides of the steel rail 3 and the inside of the steel trough 4, thereby achieving elastic locking of the steel rail 3. The gap between the bottom of the steel rail 3 and the base plate 41 is filled with the elastic material, which supports the steel rail 3 and provides insulation for it.

[0043] In an optional implementation, the construction of the reinforced concrete track slab is consistent with the original fastener track slab construction method. After the track slab construction is completed, the original fasteners are used to fix the rails as a transport channel. After the rails are welded into long rails, the fasteners are removed and the steel channels are installed. The steel channels are assemblable structures, consisting of a first installation part and a second installation part. The steel channels are installed by alternately removing the fasteners, without moving the rails. The first installation part is installed first from the bottom of the rail, followed by the second installation part. Then, bolts are used to fix the steel channels in conjunction with the pre-embedded sleeves of the existing sleepers. After all the steel channels are installed, elastic material is poured to lock the rails. This assemblable embedded rail construction method allows for the construction of steel channels and elastic materials without affecting the original fastener track slab construction effect, thereby improving the track vibration reduction performance.

[0044] The assemblable embedded track and its construction method described in this invention, through multiple innovative structural designs, achieve improved track adaptability and insulation requirements, as detailed below: 1. Due to the small lateral spacing of the pre-embedded bolt holes in the sleepers, bolts need to be installed on the outer side of the steel channel sidewall to fix the steel channel, while space needs to be reserved on the inner side of the steel channel sidewall for rail installation. This results in an excessively small distance between the rail and the steel channel sidewall, which can easily lead to electrical connection and arcing between the rail and the steel channel. By opening the sidewall at the bolt location of the steel channel and moving the steel channel sidewall outward, the net distance between the rail and the steel channel is increased. An insulating plate is installed on the inner side of the steel channel sidewall at the opening location. This solves the problem of the small spacing of the sleeper bolt holes and the requirement to reserve space for bolt installation, increases the net size of the inner wall of the steel channel, and increases the distance between the steel channel and the rail. At the same time, the insulating plate can forcefully maintain a safe distance between the rail and the steel channel sidewall, thereby achieving an insulation effect. This physical forced isolation method ensures the distance between the rail and the steel channel sidewall and reduces the on-site construction accuracy requirements. Even if there is a large construction error that causes the rail to come into contact with the insulating plate, the minimum distance between the rail and the steel channel can still be forced to be the thickness of the insulating plate gap, effectively preventing electrical connection between the rail and the steel channel and ensuring the insulation of the rail and the steel channel. By setting an insulating plate to disconnect the side wall of the steel channel at the bolt location, the net clearance of the inner wall of the steel channel is directly increased, which significantly increases the track adaptability of the track structure, reduces the impact of construction errors, reduces construction costs, and greatly improves construction efficiency.

[0045] 2. Apply insulating paint to the sides, bottom, and top of the rail feet as a measure to improve insulation performance and increase the insulation of the rail.

[0046] 3. Since the end of the steel channel at the end of the track bed slab is close to the rail, an insulating clip is installed at the end of the steel channel to physically isolate the steel channel from the rail, thereby increasing the resistance between the rail and the steel channel. Through these three methods—insulating board, insulating paint, and insulating clip—the possibility of electrical connection between the rail and the steel channel is greatly reduced, minimizing the risk of fire during later operation.

[0047] 4. Support blocks are installed at the bottom of the steel trough between longitudinally adjacent sleepers. The longitudinal length of the support block is less than the longitudinal distance between adjacent sleepers. A gap is reserved between the support block and the sleeper to facilitate lateral drainage of the track bed. Support blocks are installed at the suspended position at the bottom of the steel trough between the original longitudinally adjacent sleepers to improve the uniformity of vertical stiffness of the rail at different longitudinal positions, realize continuous support of the steel trough and rail, reduce the dynamic displacement of the rail, improve the smoothness of vehicle passage, and improve the ride comfort of the vehicle.

[0048] The innovative design of the structure increases the construction tolerance and improves construction efficiency; at the same time, it enforces a minimum distance as a safety limit and achieves continuous rail support. Furthermore, its unique construction methods enable the engineering application of the structure.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An mountable embedded track, comprising a track bed slab (1), sleepers (2), rails (3), and steel channels (4), wherein a row of sleepers (2) is arranged at intervals along the longitudinal direction of the track bed slab (1) corresponding to each rail (3), and the sleepers (2) are provided with pre-embedded sleeves (21) on both transverse sides, characterized in that, The steel trough (4) includes a plurality of base plates (41) arranged longitudinally along the track bed slab (1) and side plates fixedly connected to the transverse sides of the base plates (41). The bottom surface of the side plates contacts the top surface of the base plates (41), and the outer ends of the side plates located at both ends of the base plates (41) are aligned with the corresponding ends of the base plates (41). The base plate (41) is provided with through holes (411) corresponding to the pre-embedded sleeves (21) on both sides of a row of sleepers (2). The base plate (41) is connected to the sleepers (2) by bolts (412) passing through the corresponding pre-embedded sleeves (21) and through holes (411). The side plates on each side are arranged longitudinally along the base plate (41), and the spacing of the side plates on each side is aligned with the pre-embedded sleeve (21) on the corresponding side. The two adjacent side plates on each side are connected by an insulating plate (5). The bottom surface of the insulating plate (5) contacts the top surface of the base plate (41), and the insulating plate (5) on each side is located between the side plate on the corresponding side and the rail (3). The rail (3) is fixed between the side plates on both sides and between the insulating plates (5) on both sides by casting elastic material.

2. The mountable embedded track according to claim 1, characterized in that, The side plates on the outer sides of the two rails (3) on the same line are the vertical plates of the first angle steel (42). The vertical plates (421) and horizontal plates (422) of the first angle steel (42) are reinforced by reinforcing ribs (423). The horizontal plates (422) of the first angle steel (42) are set away from the corresponding rail (3). The horizontal plates (422) of the first angle steel (42) are fitted and connected to the corresponding bottom plate (41) so that the first angle steel (42) and the bottom plate (41) are combined to form the first component. The inner side plates of the two rails (3) on the same line are the vertical plates (421) of the second angle steel (43). The vertical plates (421) and horizontal plates (422) of the second angle steel (43) are reinforced by reinforcing ribs (423). The horizontal plates (422) of the second angle steel (43) are set away from the corresponding rail (3). The horizontal plates (422) of the second angle steel (43) are detachably attached to the corresponding base plate (41).

3. The mountable embedded track according to claim 2, characterized in that, The top elevation of the insulating plate (5) is the same as that of the side plate.

4. The mountable embedded track according to claim 2, characterized in that, The length of the insulating plate (5) is greater than the spacing between adjacent side plates on the same side.

5. The mountable embedded track according to claim 4, characterized in that, The insulating plate (5) is connected to the adjacent side plate by rivets (51), which have insulating properties.

6. The mountable embedded track according to claim 2, characterized in that, The thickness of the insulating plate (5) is 4mm-6mm.

7. An assemblable embedded track according to any one of claims 1-6, characterized in that, The rail (3) foot is coated with insulating varnish (31).

8. An assemblable embedded track according to any one of claims 1-6, characterized in that, A support block (6) is provided between two adjacent sleepers (2) along the longitudinal direction of the track bed slab (1). The bottom of the support block (6) is supported on the track bed slab (1), and the top of the support block (6) supports the base plate (41). There is a reserved gap (61) between the support block (6) and the two adjacent sleepers (2) along the longitudinal direction of the track bed slab (1).

9. An assemblable embedded track according to any one of claims 1-6, characterized in that, An insulating clip (7) is provided on the outer end of the side plate at the end of the track bed slab (1) and the corresponding end of the bottom plate (41), and a sealing end plate is installed on the outer side of the insulating clip (7).

10. A construction method for assembling an embedded track, characterized in that, For constructing an assemblable embedded track as described in any one of claims 2-6, the following steps are included: S1: The vertical plates (421) of the longitudinally adjacent first angle steels (42) are connected to each other on the side away from the horizontal plate (422) by an insulating plate (5) to form a first mounting part (81), and the vertical plates (421) of the longitudinally adjacent second angle steels (43) are connected to each other on the side away from the horizontal plate (422) by the insulating plate (5) to form a second mounting part (82). S2: Remove some fasteners from the fixed rail (3), pass the bottom plate (41) of the first mounting part (81) through the part where the fasteners of the rail (3) are removed, so that the through holes (411) on both sides of the bottom plate (41) are aligned with the embedded sleeves (21) on both sides of the sleeper (2), and then fix the first mounting part (81) on the corresponding sleeper (2) by passing the pad, through hole (411) and embedded sleeve (21) through bolts (412); Then, the horizontal plate (422) of the second angle steel (43) of the second mounting part (82) is separated from the corresponding rail (3) and detachably attached to the corresponding base plate (41), so that the steel groove (4) corresponding to this part of the rail (3) is installed and the part of the rail (3) is located inside the part of the steel groove (4); S3: Repeat step S2 until all fasteners are removed and the steel channel (4) is installed; S4: Install fasteners in the steel channel (4), adjust the geometric position of the rail (3) and fix the rail (3), and then apply adhesive to the side wall of the steel channel (4) and both sides of the rail web of the rail (3). An insulating clip (7) is installed on the end face of the steel channel (4) at the end of each track bed slab (1), and a sealing end plate is installed on the outside of the insulating clip (7). Foam strips are used to seal the gap between the steel channels (4) of the track bed slab (1). S5: The elastic material is mixed and stirred evenly on site and then poured into the inside of the steel trough (4). The bottom and sides of the rail (3) and all the gaps inside the steel trough (4) are filled and compacted to achieve elastic locking of the rail (3).

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