A fastener system installation structure and construction process

Abstract

The present invention provides a fastener system installation structure and construction process, wherein the fastener includes an elastic layer and at least one layer of iron pad, wherein the elastic layer includes a bottom elastic pad, wherein the bottom elastic pad is arranged below the iron pad, wherein a coupling pad is also arranged below the bottom elastic pad, wherein a protective plate is arranged below the coupling pad, wherein the protective plate is arranged as a metal or non-metal plate having a harder surface than the coupling pad and having a smooth surface. The provision of the protective plate allows the concrete table surface to have a better flatness after pouring construction, which is beneficial to improving the stability and smoothness of the track. The connection relationship of each aperture is set as follows: protective plate aperture > nylon sleeve outer diameter > coupling pad aperture > nylon sleeve inner diameter; without consuming additional anchor bolt length and affecting the full play of the fastener height adjustment function, rapid and accurate construction of on-site tracks is achieved, and no secondary adjustment is required after pouring, which greatly saves the construction period.

Description

Technical Field

[0001] The present invention relates to the field of rail transit technology, and in particular to a fastener system installation structure and a construction process. Background Art

[0002] During normal track construction, the track row is usually set up first. The rails and fasteners, and the fasteners and sleepers (pre-embedded with nylon sleeves) are fixed by spring bars and anchor bolts respectively. The fastener sleepers are hoisted on the rails as a whole, and the bottom coupling pad of the fasteners is fixed between the fasteners and the sleepers by the clamping force between the anchor bolts and the nylon sleeves. After the rails are adjusted in place, the concrete foundation is cast and formed into one piece with the sleepers. Since the sleepers are prefabricated, the flatness of the fastener placement area is good, and the upper surface of the sleepers protrudes from the concrete foundation. During pouring, the concrete will not contaminate the fasteners and affect the vibration reduction performance.

[0003] However, under extreme working conditions, such as the construction of column inspection pits in vehicle depots, the working space is small and it is impossible to place sleepers. The only thing to do is to tighten the nylon sleeve and the anchor bolts, and use the clamping force between the two to directly hoist the fasteners and coupling pads under the rails. The mold is then erected to cast the foundation until the bottom surface of the coupling pad. Due to the insufficient hardness of the coupling pad, the board surface is prone to warping during suspension, affecting the flatness. Direct pouring will result in poor surface flatness of the concrete platform, affecting the stability of the track. Moreover, after a certain amount of concrete is poured, it is easy to form bubbles under the coupling plate when it contacts the coupling plate. After solidification, if the bubbles are damaged under the influence of the load, local defects on the concrete surface are likely to form, affecting the smoothness of the track. When the bubbles are damaged, spikes are formed, which may damage the coupling pad.

[0004] To avoid the above problems, it is advisable to add a layer of high-hardness and high-flatness protective plate on the lower surface of the coupling pad for protection. The protective plate can be fixed by tightening the nylon sleeve and anchor bolts to suspend it in the air, or it can be supported by the ground foundation with an upward mold. From the utilization rate of the protective plate, there are two situations, including reuse and non-reuse. In the former, the protective plate needs to be taken out for secondary use after pouring, and in the latter, the protective plate and concrete form a whole after pouring.

[0005] (1) Figure 1 As shown, the protection plate is suspended in the air together with the fasteners and coupling pads by the clamping force between the nylon sleeve and the anchor bolts. To prevent the protection plate from falling, it is necessary to ensure that the opening diameter of the protection plate is between the inner and outer diameters of the nylon sleeve, and use the top surface of the nylon sleeve to support the protection plate.

[0006] ① If the protective plate is not taken out for reuse, the upper surface of the concrete casting will be flush with the upper surface of the protective plate and cast as a whole with the concrete platform. In this way, the thickness of the protective plate will consume part of the length of the anchor bolts, affecting the height adjustment function of the fasteners, and the protective plate will consume more.

[0007] ② If the protective plate is considered to be reused, the upper surface of the concrete is flush with the lower surface of the protective plate during concrete pouring. The protective plate is taken out after pouring. At this time, the installation height of the fastener rail becomes lower. The fastener needs to be removed after the concrete platform is completely solidified to make a secondary adjustment to the track height. This method has a long secondary adjustment cycle and affects the total construction time.

[0008] (2) Another fixing method, such as Figure 2 As shown in the figure, the protection plate is supported on the lower surface of the fastener (including the coupling pad) by a vertical mold from bottom to top. Since the nylon sleeve is no longer needed to support the protection plate in this way, the hole of the protection plate can be larger than the outer diameter of the nylon sleeve, allowing the nylon sleeve to pass through the protection plate, and no additional anchor bolt length is consumed, thereby affecting the height adjustment function of the fastener.

[0009] ① If the protective plate is not taken out for reuse, it will be cast together with the concrete platform. When pouring concrete, the upper surface of the concrete is flush with the upper surface of the protective plate; this method takes a long time to set up the formwork, consumes materials, and requires high precision in fixing the protective plate during construction.

[0010] ② If the protective plate is to be reused, it should be removed after pouring. When pouring concrete, the upper surface of the concrete is flush with the lower surface of the protective plate; after the protective plate is removed, the installation height of the fastener rail becomes lower, and the track height needs to be adjusted again. This method takes a long time to set up the mold and make secondary adjustments, and requires a high degree of accuracy in fixing the protective plate during construction. In terms of specific construction, it is difficult to remove the protective plate and the loss is high. Summary of the invention

[0011] In view of this, the present invention aims to provide a fastener system installation structure to solve the above-mentioned problem.

[0012] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0013] A fastener system installation structure, the fastener includes an elastic layer and at least one iron pad, the elastic layer includes a bottom elastic pad, the bottom elastic pad is arranged below the iron pad, a coupling pad is also arranged below the bottom elastic pad, a protective plate is arranged below the coupling pad, and the protective plate is set as a metal or non-metal plate with a harderness greater than that of the coupling pad and a smooth surface.

[0014] Furthermore, it also includes a support column, a nylon sleeve and an anchor bolt. The anchor bolt passes through the connecting hole inside the support column to fix the fastener system to the track foundation, and the nylon sleeve is sleeved on the outer surface of the downwardly protruding part of the anchor bolt.

[0015] Furthermore, the lower surface of the bottom elastic pad and the upper surface of the coupling pad are flush with the lower surface of the support column.

[0016] Furthermore, a first mounting hole for installing the anchor bolt is provided at a position on the coupling pad corresponding to the anchor bolt, and a second mounting hole for installing the anchor bolt is provided at a position on the protection plate corresponding to the anchor bolt.

[0017] Furthermore, the diameter of the first mounting hole is between the inner and outer diameters of the nylon sleeve, and the diameter of the second mounting hole is greater than the outer diameter of the nylon sleeve.

[0018] Furthermore, the coupling pad and the protection plate are configured as an integrated composite plate structure, and a composite plate mounting hole is provided on the composite plate.

[0019] Furthermore, the inner diameter of the composite plate mounting hole on the side facing the fastener body is smaller than the inner diameter on the side away from the fastener body.

[0020] Furthermore, the support columns can be independent or connected as a whole through connecting pieces.

[0021] Furthermore, the support column is provided as an independent structure or is provided integrally with the iron pad.

[0022] Compared with the prior art, the fastener system installation structure of the present invention has the following advantages:

[0023] The fastener system installation structure described in the present invention is provided with a protective plate under the coupling pad, which has a simple structure and is easy to process and produce. The provision of the protective plate ensures that the concrete table surface has a better flatness after pouring construction, which is beneficial to improving the stability and smoothness of the track. The connection relationship between the various apertures is set to: protective plate aperture > nylon sleeve outer diameter > coupling pad aperture > nylon sleeve inner diameter; without consuming additional anchor bolt length and affecting the full play of the fastener height adjustment function, the on-site track is quickly and accurately constructed, and there is no need for secondary adjustment after pouring, which greatly saves the construction period.

[0024] The present invention also provides a fastener system construction process, using the fastener system installation structure described above, the construction process comprises the following steps:

[0025] (1) The fastener including the coupling pad is hoisted at the bottom of the rail by using the combination of anchor bolts and nylon sleeves, and the protection plate is hung below the coupling pad by bonding with the coupling pad or other connection methods; the connection relationship of each aperture is: protection plate aperture > nylon sleeve outer diameter > coupling pad aperture > nylon sleeve inner diameter;

[0026] Since the protection plate is light in weight, hanging it under the coupling pad will not cause the coupling pad to warp, and the protection plate is hard and has high flatness, which helps to ensure the flatness of the concrete pouring below;

[0027] (2) pouring concrete to a height reaching the upper surface of the protection plate, so that the protection plate and the concrete form a whole, the protection plate is embedded in the concrete, and the protection plate and the surrounding concrete form a foundation surface;

[0028] (3) After the pouring is completed, the physical connection between the coupling pad and the protection plate is separated, thereby achieving the separation of the coupling plate and the protection plate.

[0029] The fastener system described in the present invention has simple construction process steps, will not cause surface warping of the coupling pad, the protective plate is hard and has high flatness, which helps to ensure the flatness of the concrete below during pouring; without additionally consuming the length of the anchor bolts and affecting the full play of the fastener height adjustment function, it achieves rapid and accurate construction of on-site rails, and does not require secondary adjustments after pouring, greatly saving the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 It is a schematic diagram of using the top surface of a nylon sleeve to support a protection plate in the prior art;

[0032] Figure 2 It is a schematic diagram of supporting the protection plate by erecting a mold from bottom to top in the prior art;

[0033] Figure 3 This is a schematic diagram of the structure of a fastener system in Embodiment 1 of the present invention;

[0034] Figure 4 for Figure 3 The structural diagram of the fastener system after omitting the strength redundancy;

[0035] Figure 5 This is a schematic diagram of the structure of a fastener system in Embodiment 2 of the present invention;

[0036] Figure 6 for Figure 5 The structural diagram of the fastener system after omitting the strength redundancy;

[0037] Figure 7 A schematic diagram of the coupling pad structure in an embodiment of the present invention;

[0038] Figure 8 This is a schematic diagram of the structure of the protection plate in an embodiment of the present invention;

[0039] Fig. 9 This is a schematic diagram of the structure of the composite plate in an embodiment of the present invention;

[0040] Fig.10This is a schematic structural diagram of a composite plate from another perspective in an embodiment of the present invention;

[0041] Fig.11 Schematic diagram of the composite panel installation structure in an embodiment of the present invention.

[0042] Description of reference numerals:

[0043] 1-first iron pad, 2-second iron pad, 3-middle elastic pad, 4-bottom elastic pad, 5-elastic bar seat, 6-elastic bar, 7-support column, 8-nylon sleeve, 9-protection plate, 10-coupling pad, 11-anchor bolt, 12-third iron pad, 13-composite plate, 14-first mounting hole, 15-second mounting hole, 16-insulating sleeve, 17-insulating gland, 18-elastic pad under rail, 19-rail foot, 20-composite plate mounting hole DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The descriptions of "first", "second", etc. mentioned in the embodiments of the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0045] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0046] Example 1

[0047] like Figures 1 to 4 As shown, the present embodiment provides a multi-layer fastener system installation structure, wherein the fastener includes a first iron pad 1, a second iron pad 2, a third iron pad 12 and an elastic layer. The three iron pads are arranged in sequence from top to bottom; the third iron pad 12 is arranged at the bottom, and a support column 7 is arranged on the third iron pad 12, and the support column 7 is arranged integrally with the third iron pad 12. The elastic layer includes an intermediate elastic pad 3 arranged between the first iron pad 1 and the second iron pad 2 and a bottom elastic pad 4 arranged at the bottom of the second iron pad 2, and the support column 7 passes through the first iron pad 1, the second iron pad 2 and the intermediate elastic pad 3. The intermediate elastic pad 3 and the bottom elastic pad 4 are made of rubber and polyurethane elastic materials to effectively absorb the vibration energy of the fastener. The hardness and density of the material selected for the iron pad are greater than the properties of the material used for the elastic pad.

[0048] Preferably, Figure 3 As shown, in order to remove the redundant strength part in the fastener system, the third iron plate except the support column can be omitted in this embodiment. That is, the support column 7 is independently set, which effectively reduces the area and mass of the iron plate, effectively reduces the cost of the fastener while ensuring the rigidity of the fastener.

[0049] like Figures 7 to 11 As shown, a coupling pad 10 is also provided at the lower part of the bottom elastic pad 4. The lower surface of the bottom elastic pad 4 and the upper surface of the coupling pad 10 are flush with the lower surface of the support column 7. The anchor bolt 11 penetrates the connection hole inside the support column 7 to fix the fastener system to the track foundation. Further, the fastener installation system of this embodiment also includes a nylon sleeve 8 and a protective plate 9. Specifically, the nylon sleeve 8 is sleeved on the outer surface of the downward protruding part of the anchor bolt 11, and the nylon sleeve 8 has a certain wall thickness. A protective plate 9 is provided at the lower part of the coupling pad 10, and the upper surface of the protective plate 9 is flush with the upper surface of the nylon sleeve. The protective plate 9 is set to a metal or non-metal plate with a hardness greater than that of the coupling pad 10, a lighter weight, a certain thickness, flatness, and no warping after being subjected to force. The setting of the protective plate 9 makes the concrete table surface flat after pouring construction better, which is conducive to improving the stability and smoothness of the track.

[0050] Furthermore, a first mounting hole 14 for installing the anchor bolt 11 is provided at a position corresponding to the anchor bolt 11 on the coupling pad 10, and the diameter of the first mounting hole 14 is between the inner and outer diameter values ​​of the nylon sleeve, so that the coupling pad 10 can be clamped at the bottom of the fastener after the nylon sleeve 8 and the anchor bolt 11 are tightened.

[0051] Furthermore, a second mounting hole 15 for mounting the anchor bolt 11 is provided at a position on the protection plate 9 corresponding to the anchor bolt 11 . The diameter of the second mounting hole 15 is larger than the outer diameter of the nylon sleeve, so as to facilitate the nylon sleeve to pass through the protection plate 9 .

[0052] like Figures 7 to 11 As shown, preferably, in order to fix the spatial position of the protective plate, the coupling pad 10 and the protective plate 9 can be set as an integrated composite plate structure in the fastener installation system of this embodiment. For example, the coupling pad 10 and the protective plate 9 can be pre-fixed into a composite plate 13 by adhesive tape or other connection methods. The operation is simple. During subsequent use, the tape or other connection methods can be disconnected to separate the coupling pad 10 and the protective plate 9 in the composite plate 13 without affecting the subsequent replacement of the coupling pad. Since the upper surface of the protective plate 9 is flush with the upper surface of the nylon sleeve, the height adjustment amount of the fastener will not be consumed. Furthermore, a composite plate installation hole 20 is opened on the composite plate 13, and the inner diameter of the composite plate installation hole 20 facing the fastener side is smaller than the inner diameter away from the fastener side. The structure of the fastener installation system is simplified to facilitate installation and processing.

[0053] Preferably, the upper middle part of the first iron pad 1 of the present embodiment is used to install the rail elastic pad 18 and the rail, and a rail connector connected to the rail is provided on the first iron pad 1, and the rail connector is designed according to the line requirements. More preferably, in the present invention, the rail connector is set as an elastic bar seat 5, and an elastic bar 6 is installed on the elastic bar seat 5. The elastic bar 6 can be set as various types of elastic bars, such as "e"-type elastic bars, "w"-type elastic bars, etc., and the elastic bar 6 is buckled on the rail foot to fix the rail. The rail elastic pad 18 is set below the rail so that the rail foot is in contact with the rail elastic pad 18.

[0054] Preferably, the support columns on both sides of the present embodiment may be independent or connected as a whole through a connector to enhance integrity, such as the two support columns may be connected by a straight line, a square frame, etc.

[0055] Preferably, the middle elastic pad and the under-rail elastic pad in this embodiment can be fully or partially assembled or bonded to the middle iron pad as a whole.

[0056] Preferably, the horizontal contours of the coupling pad 10 and the protective plate 9 are designed to be consistent with the fasteners, so that before pouring concrete, materials such as tape or protective film can be used to wrap around the side surfaces of the fasteners around their outer contours to ensure that no concrete enters the internal fitting gaps during construction, affecting the vibration reduction performance.

[0057] The fastener system installation structure provided in this embodiment is provided with a protective plate under the coupling pad. It has a simple structure, is easy to process and produce, and is suitable for multi-layer fasteners with advanced vibration reduction. The provision of the protective plate ensures that the concrete table surface has better flatness after pouring construction, which is beneficial to improving the stability and smoothness of the track. The connection relationship between the various apertures is set to: protective plate aperture > nylon sleeve outer diameter > coupling pad aperture > nylon sleeve inner diameter; without consuming additional anchor bolt length and affecting the full play of the fastener height adjustment function, it achieves fast and accurate construction of on-site tracks, and does not require secondary adjustments after pouring, greatly saving the construction period.

[0058] Example 2

[0059] like Figures 5 to 11 As shown, this embodiment provides a double-layer fastener system installation structure, including a first iron pad 1, a second iron pad 2 and an elastic layer, wherein the elastic layer is a bottom elastic pad 4 arranged at the lower part of the first iron pad 1. A support column 7 is arranged on the second iron pad, and the support column 7 is integrally arranged with the second iron pad 2. The support column 7 passes through the first iron pad 1 and the bottom elastic pad 4. The bottom elastic pad 4 is made of rubber and polyurethane elastic materials, which effectively absorbs the vibration energy of the fastener. The hardness and density of the material selected for the iron pad are greater than the properties of the material used for the elastic pad.

[0060] Preferably, in order to remove the redundant strength part in the fastener system, the second iron plate 2 except the support column 7 can be omitted in this embodiment. That is, the support column 7 is independently provided, which effectively reduces the area and mass of the iron plate, and effectively reduces the cost of the fastener while ensuring the rigidity of the fastener.

[0061] A coupling pad 10 is also provided at the lower part of the elastic pad. The lower surface of the elastic pad and the upper surface of the coupling pad 10 are flush with the lower surface of the support column 7. The anchor bolt 11 penetrates the connection hole inside the support column 7 to fix the fastener system to the track foundation. Furthermore, the fastener installation system of this embodiment also includes a nylon sleeve 8 and a protective plate 9. Specifically, the nylon sleeve 8 is sleeved on the outer surface of the downward protruding part of the anchor bolt 11, and the nylon sleeve 8 has a certain wall thickness. A protective plate 9 is provided at the lower part of the coupling pad 10, and the upper surface of the protective plate 9 is flush with the upper surface of the nylon sleeve. The protective plate 9 is set to a metal or non-metal plate with a harderness greater than the coupling pad 10, a lighter weight, a certain thickness, flatness, and will not warp after being subjected to force. The setting of the protective plate 9 makes the concrete table surface flat after pouring construction better, which is conducive to improving the stability and smoothness of the track.

[0062] Furthermore, the specific structure of the coupling pad and the protection plate in this embodiment is the same as that of the embodiment 1, and the structure of the first iron pad is also the same as that of the embodiment 1. The coupling pad 10 is provided with a first mounting hole 14 for mounting the anchor bolt 11 at a position corresponding to the anchor bolt 11. The diameter of the first mounting hole 14 is between the inner and outer diameter values ​​of the nylon sleeve, so that the coupling pad 10 can be clamped at the bottom of the fastener after the nylon sleeve 8 is tightened with the anchor bolt 11. The protection plate 9 is provided with a second mounting hole 15 for mounting the anchor bolt 11 at a position corresponding to the anchor bolt 11. The diameter of the second mounting hole 15 is larger than the outer diameter of the nylon sleeve, so that the nylon sleeve can pass through the protection plate 9 conveniently.

[0063] Preferably, in order to fix the spatial position of the protective plate, the coupling plate 10 and the protective plate 9 can be set as an integrated composite plate structure in the fastener installation system of this embodiment. For example, the coupling plate 10 and the protective plate 9 can be pre-fixed as a composite plate 13 by adhesive tape or other connection methods. The operation is simple. During subsequent use, the tape can be cut to separate the coupling plate 10 and the protective plate 9 without affecting the subsequent replacement of the coupling plate. Since the upper surface of the protective plate 9 is flush with the upper surface of the nylon sleeve, the height adjustment amount of the fastener will not be consumed. Furthermore, a composite plate installation hole 20 is opened on the composite plate 13, and the inner diameter of the composite plate installation hole 20 facing the fastener side is smaller than the inner diameter away from the fastener side. The structure of the fastener installation system is simplified to facilitate installation and processing.

[0064] Preferably, the structure of the first iron pad in this embodiment may be the same as that in Embodiment 1, and will not be described in detail here.

[0065] Preferably, the support columns on both sides of the present embodiment may be independent or connected as a whole through a connector to enhance integrity, such as the two support columns may be connected by a straight line, a square frame, etc.

[0066] Preferably, the middle elastic pad and the under-rail elastic pad in this embodiment can be fully or partially assembled or bonded to the middle iron pad as a whole.

[0067] Preferably, the horizontal contours of the coupling pad 10 and the protective plate 9 are designed to be consistent with the fasteners, so that before pouring concrete, materials such as tape or protective film can be used to wrap around the side surfaces of the fasteners around their outer contours to ensure that no concrete enters the internal fitting gaps during construction, affecting the vibration reduction performance.

[0068] The fastener system installation structure provided in this embodiment is provided with a protective plate under the coupling pad. It has a simple structure, is easy to process and produce, and is suitable for double-layer fasteners with medium vibration reduction. The provision of the protective plate ensures that the concrete table surface has better flatness after pouring construction, which is beneficial to improving the stability and smoothness of the track. The connection relationship between the various apertures is set to: protective plate aperture > nylon sleeve outer diameter > coupling pad aperture > nylon sleeve inner diameter; without consuming additional anchor bolt length and affecting the full play of the fastener height adjustment function, it achieves fast and accurate construction of on-site tracks, and does not require secondary adjustments after pouring, greatly saving the construction period.

[0069] Example 3

[0070] This embodiment provides a fastener construction process, using the fastener system installation structure described in the above embodiment, including the following steps:

[0071] (1) The fastener including the coupling pad is hoisted at the bottom of the rail by using the combination of anchor bolts and nylon sleeves, and the protection plate is hung below the coupling pad by bonding with the coupling pad or other connection methods; the connection relationship of each aperture is set as follows: the aperture of the protection plate> the outer diameter of the nylon sleeve> the aperture of the coupling pad> the inner diameter of the nylon sleeve;

[0072] Since the protection plate is light in weight, hanging it under the coupling pad will not cause the coupling pad to warp, and the protection plate is hard and has high flatness, which helps to ensure the flatness of the concrete pouring below;

[0073] (2) pouring concrete to a height reaching the upper surface of the protection plate, so that the protection plate and the concrete form a whole, the protection plate is embedded in the concrete, and the protection plate and the surrounding concrete form a foundation surface;

[0074] (3) After the pouring is completed, the physical connection between the coupling pad and the protection plate is separated, thereby achieving the separation of the coupling plate and the protection plate.

[0075] The fastener construction process provided in this embodiment is suitable for various types of fasteners, has simple steps, will not cause surface warping of the coupling pad, and the protective plate is hard and highly flat, which helps to ensure the flatness of the concrete below during pouring. It does not consume additional anchor bolt length or affect the full utilization of the fastener height adjustment function, while achieving rapid and accurate construction of on-site rails, and does not require secondary adjustments after pouring, greatly saving the construction period.

[0076] 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, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fastener system installation structure, the fastener comprising an elastic layer, at least one iron pad, a support column (7), a nylon sleeve (8) and an anchor bolt (11), the elastic layer comprising a bottom elastic pad (4), the bottom elastic pad (4) being arranged below the iron pad, and a coupling pad (10) being arranged below the bottom elastic pad (4), characterized in that: A protective plate (9) is provided at the lower part of the coupling pad (10), and the protective plate (9) is provided as a metal or non-metal plate with a harderness greater than that of the coupling pad (10) and a smooth surface, and the upper surface of the protective plate (9) is flush with the upper surface of the nylon sleeve (8), and the support column (7) is provided as an independent structure or is provided integrally with the iron pad, and the anchor bolt (11) penetrates the connection hole inside the support column (7) to fix the fastener system to the track foundation, and the nylon sleeve (8) is sleeved on the outer surface of the downwardly protruding portion of the anchor bolt (11); A first mounting hole (14) for mounting the anchor bolt (11) is provided at a position on the coupling pad (10) corresponding to the anchor bolt (11), and a second mounting hole (15) for mounting the anchor bolt (11) is provided at a position on the protection plate (9) corresponding to the anchor bolt (11); the diameter of the first mounting hole (14) is between the inner and outer diameters of the nylon sleeve (8), and the diameter of the second mounting hole (15) is greater than the outer diameter of the nylon sleeve (8); and the connection relationship of the respective apertures is set as follows: aperture of the protection plate (9)> outer diameter of the nylon sleeve (8)> aperture of the coupling pad (10)> inner diameter of the nylon sleeve (8).

2. The fastener system installation structure according to claim 1, characterized in that: The lower surface of the bottom elastic pad (4), the upper surface of the coupling pad (10) and the lower surface of the support column (7) are flush.

3. The fastener system installation structure according to claim 1, characterized in that: The coupling pad (10) and the protection plate (9) are arranged as an integrated composite plate structure, and a composite plate mounting hole (20) is provided on the composite plate (13).

4. The fastener system installation structure according to claim 3, characterized in that: The inner diameter of the composite plate mounting hole (20) on the side facing the fastener body is smaller than the inner diameter on the side away from the fastener body.

5. The fastener system installation structure according to claim 1, characterized in that: The support columns (7) on both sides of the fastener can be independent or connected as a whole through a connecting piece.

6. A fastener system construction process, characterized in that: Using the fastener system installation structure according to any one of claims 1 to 5, the construction process comprises the following steps: (1) The fastener including the coupling pad (10) is hoisted at the bottom of the rail by using the anchor bolt (11) and the nylon sleeve (8), and the protection plate (9) is hung below the coupling pad by means of bonding force with the coupling pad (10) or other connection methods; the connection relationship of the various apertures is: the aperture of the protection plate> the outer diameter of the nylon sleeve> the aperture of the coupling pad> the inner diameter of the nylon sleeve; (2) pouring concrete to a height reaching the upper surface of the protection plate (9), so that the protection plate (9) and the concrete form a whole, the protection plate (9) is embedded in the concrete, and the protection plate (9) and the surrounding concrete form a foundation surface; (3) After the pouring is completed, the physical connection between the coupling pad (10) and the protection plate (9) is severed, thereby achieving separation of the coupling plate and the protection plate.

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