A CRTS-Ⅲ type ballastless track

Abstract

This invention discloses a CRTS-Ⅲ type ballastless track, relating to the field of track technology, comprising a base plate, a track slab, and a filling layer; the filling layer is formed by pouring self-compacting concrete between the track slab and the base plate; a corrugated steel frame is embedded within the track slab; the corrugated steel frame is assembled from a main corrugated plate, perforated channel steel, and strip corrugated plates. The CRTS-Ⅲ type ballastless track provided by this invention can avoid interlayer cracking and track slab cracking in slab ballastless tracks.

Description

Technical Field

[0001] This invention relates to the field of track technology, and in particular to a CRTS-Ⅲ type ballastless track. Background Technology

[0002] Slab track, with its high smoothness, high stability, high reliability, and low maintenance, has become the most important track type for high-speed railways both domestically and internationally in recent years. After improvements and optimizations, my country's slab track mainly includes three types: CRTS-Ⅰ, CRTS-Ⅱ, and CRTS-Ⅲ. The CRTS-Ⅲ type slab track is a new type of slab track structure with complete intellectual property rights in my country. This type of slab track adopts a modular structure. During manufacturing and construction, CRTS-Ⅲ type slab track slabs are prefabricated in the factory. When laying the track slabs on the bridge (road) surface, the prefabricated track slabs are laid and precisely adjusted to the design position. After being compacted, self-compacting concrete is poured through pre-reserved grouting holes on the slabs to achieve connection with the bridge (road) surface base structure.

[0003] The existing CRTS-Ⅲ type slab track uses multiple grooves on the base plate with corresponding protrusions in the filling layer, and two rows of portal steel bars along the track direction to limit interlayer movement. However, due to significant differences in the elastic modulus, viscosity, and other properties of the materials between layers, and the limited limiting capacity of the portal steel bars and grooves, investigations have revealed that during service, under the influence of multiple factors such as temperature loads, train dynamic loads, and rainwater erosion, defects such as interlayer separation and cracking between the track slab and base plate frequently occur. Summary of the Invention

[0004] The purpose of this invention is to provide a CRTS-Ⅲ type ballastless track to solve the problems existing in the prior art and avoid interlayer cracking and track slab cracking in slab ballastless tracks.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides a CRTS-Ⅲ type ballastless track, comprising a base plate, a track plate, and a filling layer. The base plate is made of C40 concrete, and the track plate is made of C60 concrete. The filling layer is formed by pouring self-compacting concrete between the track plate and the base plate. A corrugated steel frame is embedded in the track plate. The corrugated steel frame is assembled from a main corrugated plate, perforated channel steel, and strip corrugated plates.

[0007] Optionally, the main corrugated plate is an integrally formed structure, comprising multiple concave grooves and convex blocks arranged at intervals. The openings of the concave grooves correspond to the positions of the sleepers, and the closed positions of the convex blocks correspond to the intervals between the sleepers. When the sleeper is under force, it first presses against the concrete and then transmits the force to the surrounding concrete and steel frame. The concave groove includes two main inclined plates with opposite inclination directions and a main horizontal plate, and the convex block includes two main inclined plates with opposite inclination directions and a main horizontal plate. Adjacent concave grooves and convex plates share the same main inclined plate. The two ends of the main horizontal plate of the concave groove are integrally formed with the bottom of two adjacent main inclined plates, and the two ends of the main horizontal plate of the convex block are integrally formed with the top of two adjacent main inclined plates. Multiple openings are provided on both the main horizontal plate and the main inclined plate. The size of the openings should be large enough to allow coarse aggregate in concrete to pass through, that is, the diameter of the openings should be much larger than the particle size of coarse aggregate in concrete. Positioning bolt holes are provided at both the front and rear ends of the main inclined plate and the main horizontal plate. A grouting pre-reserved hole is provided in the middle of the main horizontal plate of the concave groove. The grouting pre-reserved hole should be large enough to allow the grouting pre-reserved hole template to pass through.

[0008] Optionally, the strip corrugated plate includes a first strip corrugated plate and a second strip corrugated plate. The first strip corrugated plate includes multiple first portal frames, and the bottom of the side plates of two adjacent first portal frames are integrally formed by a first connecting plate. The horizontal top plate and the two side plates of the first portal frames are provided with openings. The second strip corrugated plate includes multiple second portal frames, and the bottom of the side plates of two adjacent second portal frames are integrally formed by a second connecting plate. The horizontal top plate and the two side plates of the second portal frames are provided with openings. The first connecting plate and the second connecting plate are both provided with openings, and the second connecting plate located in the middle is provided with a grouting pre-reserved hole. Multiple first strip corrugated plates are matched and snapped onto the concave groove and convex block of the main corrugated plate. Multiple second strip corrugated plates are matched and snapped onto the concave groove and convex block of the main corrugated plate, and the second strip corrugated plates are located at the grouting pre-reserved hole position of the main corrugated plate.

[0009] Optionally, the corrugated strip further includes a third corrugated strip, a fourth corrugated strip, and a fifth corrugated strip; the third corrugated strip includes a third portal frame, with horizontal first extended flanges on both bottom sides of the third portal frame, and openings on both the third portal frame and the first extended flanges; the fourth corrugated strip includes a fourth portal frame, with horizontal second extended flanges on both bottom sides of the fourth portal frame, and openings on the fourth portal frame; the fifth corrugated strip includes a fifth portal frame, the fifth... Both sides of the portal frame are provided with horizontal third extended flanges at the bottom, and the fifth portal frame is provided with openings; the outer sides of the second and third extended flanges are provided with arc-shaped grooves. The arc-shaped groove structure ensures that the openings of the main corrugated plate are not obstructed when the fourth and fifth strip corrugated plates are connected to the main corrugated plate, provided that the openings of the main corrugated plate are large enough. After multiple fourth and fifth strip corrugated plates are longitudinally welded to the bottom of the main corrugated plate, multiple third strip corrugated plates are then horizontally welded.

[0010] Optionally, the perforated channel steel is fixedly installed at the positioning bolt holes of the main corrugated plate by bolts, and the perforated channel steel is located below the main corrugated plate.

[0011] Optionally, multiple prestressing tendons are inserted into the openings of the first strip corrugated plate, the second strip corrugated plate, and the main corrugated plate. The prestressing tendons include multiple transverse steel bars and multiple longitudinal steel bars. When inserting the transverse and longitudinal prestressing tendons, the inherent auxiliary structures of the ballastless track slab, such as reserved grouting holes and hoisting holes, should be avoided.

[0012] Optionally, the filling layer is provided with a reinforcing mesh, which is inserted into the openings of the third, fourth, and fifth corrugated plates and the perforated channel steel; a single structural steel bar is inserted into the third, fourth, and fifth corrugated plates.

[0013] Optionally, the top of the base plate has a slot, which is a cross-shaped strip structure. The bottom of the third, fourth, and fifth corrugated plates can penetrate the filling layer and be engaged in the slot. Traditional CRTS-Ⅲ ballastless track slabs have 2-3 rectangular slots in the base plate for limiting the movement between the base plate and the filling layer. This limiting ability is weak, and the rectangular slots are not chamfered, making them prone to cracking at the corners. The slots pre-reserved in the base plate of this invention allow the third, fourth, and fifth corrugated plates to be inserted, enabling these three types of corrugated plates to penetrate the ballastless track slab, the filling layer, and the base plate, effectively improving the interlayer limiting ability and reducing cracking.

[0014] Optionally, geotextile is laid between the base plate and the filling layer.

[0015] The present invention achieves the following technical effects compared to the prior art:

[0016] This invention replaces the structural reinforcement in the traditional structure with a steel skeleton composed of a main corrugated plate and a first and second strip corrugated plate. The steel is more evenly distributed within the concrete, and the bonding performance between the two is stronger, effectively avoiding local stress concentration that could lead to track slab cracking and reducing the need for prestressing tendons. Perforated channel steel and third, fourth, and fifth strip corrugated plates are used to limit the movement between the ballastless track slab and the filling layer. Furthermore, the perforated channel steel and the third, fourth, and fifth strip corrugated plates are welded to the steel skeleton within the ballastless track slab, effectively limiting relative slippage between the two layers and preventing interlayer cracking. The use of perforated channel steel also effectively prevents longitudinal cracking at the edges. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the main corrugated plate structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the first strip corrugated plate structure of the present invention;

[0020] Figure 3 Schematic diagram of the second strip-shaped corrugated plate structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the perforated slotted steel structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the third strip corrugated plate structure of the present invention;

[0023] Figure 6 This is a schematic diagram of the fourth strip-shaped corrugated plate structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the fifth strip corrugated plate structure of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of the main corrugated plate of the present invention combined with the first strip corrugated plate, the second strip corrugated plate and the perforated channel steel;

[0026] Figure 9This is a schematic diagram showing the combination of the main corrugated plate of the present invention with the third, fourth, and fifth strip corrugated plates;

[0027] Figure 10 for Figure 9 Side view;

[0028] Figure 11 This is a schematic diagram of the base plate structure of the present invention;

[0029] Figure 12 This is a schematic diagram of the track slab and filling layer of the present invention;

[0030] Figure 13 This is a schematic diagram of the CRTS-Ⅲ type ballastless track structure of the present invention;

[0031] Figure 14 This is a schematic diagram of the filling layer structure of the present invention;

[0032] Figure 15 This is a schematic diagram of the side of the filling layer of the present invention in contact with the track plate;

[0033] Figure 16 This is a schematic diagram of the side of the filling layer in contact with the base plate of the present invention;

[0034] Explanation of reference numerals in the attached drawings: 1-base plate, 2-track plate, 3-main corrugated plate, 4-perforated channel steel, 5-sleeper, 6-perforation, 7-positioning bolt hole, 8-grouting reserved hole, 9-first strip corrugated plate, 10-second strip corrugated plate, 11-third strip corrugated plate, 12-fourth strip corrugated plate, 13-fifth strip corrugated plate, 14-prestressing tendon, 15-filling layer, 16-groove, 17-geotextile. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] The purpose of this invention is to provide a CRTS-Ⅲ type ballastless track to solve the problems existing in the prior art and avoid interlayer cracking and track slab cracking in slab ballastless tracks.

[0037] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] This invention provides a CRTS-Ⅲ type ballastless track, such as Figure 1, Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 and Figure 16 As shown, it includes a base plate 1, a track plate 2, and a filling layer 15. The base plate 1 is made of C40 concrete, and the track plate 2 is made of C60 concrete. The filling layer 15 is formed by pouring self-compacting concrete between the track plate 2 and the base plate 1. Geotextile 17 is laid between the base plate 1 and the filling layer 15. A corrugated steel frame is embedded in the track plate 2. The corrugated steel frame is assembled from the main corrugated plate 3, the perforated channel steel 4, and the strip corrugated plate.

[0039] Specifically, the main corrugated plate 3 is a one-piece molded structure, including multiple concave grooves and convex blocks arranged at intervals. The openings of the concave grooves of the main corrugated plate 3 correspond to the positions of the sleepers 5, and the closed positions of the convex blocks correspond to the intervals between the sleepers 5. After being subjected to force, the sleeper 5 first presses against the concrete and transmits the force to the surrounding concrete and steel frame. The concave groove includes two main inclined plates with opposite inclination directions and a main horizontal plate, and the convex block includes two main inclined plates with opposite inclination directions and a main horizontal plate. Adjacent concave grooves and convex plates share the same main inclined plate. The two ends of the main horizontal plate of the groove are integrally formed with the bottom of two adjacent main inclined plates, and the two ends of the main horizontal plate of the convex block are integrally formed with the top of two adjacent main inclined plates. Multiple openings 6 are provided on both the main horizontal plate and the main inclined plate. The size of the openings 6 should be sufficient to allow the coarse aggregate of the concrete to pass through, that is, the diameter of the openings 6 should be much larger than the particle size of the coarse aggregate of the concrete. Positioning bolt holes 7 are provided at both the front and rear ends of the main inclined plate and the main horizontal plate. A grouting reserved hole 8 is provided in the middle of the main horizontal plate of the concave groove. The grouting reserved hole 8 should be sufficient to allow the template of the grouting reserved hole to pass through.

[0040] The corrugated sheet includes a first corrugated sheet 9, a second corrugated sheet 10, a third corrugated sheet 11, a fourth corrugated sheet 12, and a fifth corrugated sheet 13. The first corrugated sheet 9 includes multiple first portal frames, and the bottom of the side panels of two adjacent first portal frames are integrally formed by a first connecting plate. Openings are provided on the horizontal top plate and both side panels of the first portal frames. The second corrugated sheet 10 includes multiple second portal frames, and the bottom of the side panels of two adjacent second portal frames are integrally formed by a second connecting plate. Openings 6 are provided on the horizontal top plate and both side panels of the second portal frames. Openings 6 are provided on both the first and second connecting plates, with the second connecting plate located in the middle having openings 6. A grouting pre-reserved hole 8 is provided; multiple first strip corrugated plates 9 are matched and snapped onto the concave groove and convex block of the main corrugated plate 3. The first strip corrugated plate located on the convex block is fixedly connected to the main corrugated plate by bolts. Multiple second strip corrugated plates 10 are matched and snapped onto the concave groove of the main corrugated plate 3, and the second strip corrugated plates 10 are located at the grouting pre-reserved hole 8 of the main corrugated plate 3. The perforated channel steel is located at the positioning bolt hole of the main corrugated plate. The first strip corrugated plate, the second strip corrugated plate in the concave groove are fixedly connected to the main corrugated plate and the perforated channel steel by bolts. After the connection and positioning are completed, the connection position can be locally welded to improve the connection strength. The third strip corrugated plate 11 includes a third portal frame, with horizontal first extended flanges on both sides of the bottom of the third portal frame, and openings on both the third portal frame and the first extended flanges; the fourth strip corrugated plate 12 includes a fourth portal frame, with horizontal second extended flanges on both sides of the bottom of the fourth portal frame, and openings on the fourth portal frame; the fifth strip corrugated plate 13 includes a fifth portal frame, with horizontal third extended flanges on both sides of the bottom of the fifth portal frame, and openings on the fifth portal frame; arc-shaped grooves are provided on the outer sides of the second and third extended flanges, and the arc-shaped groove structure ensures that the openings of the main corrugated plate are large enough, and that the fourth and fifth strip corrugated plates do not obstruct the openings of the main corrugated plate when connected to the main corrugated plate; after multiple fourth strip corrugated plates 12 and fifth strip corrugated plates 13 are longitudinally welded to the bottom of the main corrugated plate 3, multiple third strip corrugated plates 11 are then transversely welded.

[0041] Multiple prestressing tendons 14 are inserted into the openings 6 of the first corrugated plate 9, the second corrugated plate 10, and the main corrugated plate 3. Each prestressing tendon 14 includes multiple transverse and multiple longitudinal reinforcing bars. When inserting the transverse and longitudinal prestressing bars, they must avoid the inherent auxiliary structures of the ballastless track slab, such as reserved grouting holes and hoisting holes. A reinforcing mesh is provided within the filling layer 15, and this mesh is inserted into the openings 6 of the third corrugated plate 11, the fourth corrugated plate 12, the fifth corrugated plate 13, and the perforated channel steel 4. A single structural reinforcing bar is inserted into the third corrugated plate 11, the fourth corrugated plate 12, and the fifth corrugated plate 13.

[0042] The base plate 1 has a slot 16 at its top, which includes intersecting transverse and longitudinal strip grooves. The bottoms of the third corrugated plate 11, the fourth corrugated plate 12, and the fifth corrugated plate 13 can penetrate the filling layer 15 and be engaged in the slot 16. The slots of traditional CRTS-Ⅲ ballastless track base plates are 2-3 rectangular slots used for limiting the position between the base plate and the filling layer. The limiting ability is weak, and the rectangular slots are not chamfered, making them prone to cracking at the corners. The slot 16 reserved in the base plate 1 of this invention allows the third corrugated plate 11, the fourth corrugated plate 12, and the fifth corrugated plate 13 to be inserted. This allows these three types of corrugated plates to penetrate the ballastless track plate, the filling layer, and the base, effectively improving the interlayer limiting ability and reducing the occurrence of cracking.

[0043] During the manufacturing and installation of this invention, firstly, the strip corrugated plate, the main corrugated plate 3, and the perforated channel steel 4 are coated with epoxy resin to achieve insulation. Then, using reinforcing bolts, the perforated channel steel 4, the first strip corrugated plate 9, the second strip corrugated plate 10, and the main corrugated plate 3 are assembled according to the positioning bolt holes 7. The first strip corrugated plate 9 and the second strip corrugated plate 10 are placed within the convex and concave spaces of the main corrugated plate 3. Specifically, the second strip corrugated plate 10 is placed at the grouting pre-reserved hole in the main corrugated plate 3, and the first strip corrugated plate 9 is placed at the remaining positions. The perforated channel steel 4 is then placed under the main corrugated plate 3 according to the positioning bolt holes 7. After the bolts are fixed, random spot welding is performed at the contact points of the first corrugated plate 9, the second corrugated plate 10, and the main corrugated plate 3. An appropriate amount of insulating varnish is sprayed onto the welded areas. After positioning the corrugated plate steel frame using the positioning bolts, the openings 6 of the first corrugated plate 9, the second corrugated plate 10, and the main corrugated plate 3 should correspond to each other and should not obstruct each other. Therefore, accurate cutting and positioning of the openings must be ensured during manufacturing. The graphic positions of the first corrugated plate 9 and the second corrugated plate 10 correspond to the positions of the side openings and circular holes of the main corrugated plate 3.

[0044] The third corrugated plate 11, the fourth corrugated plate 12, and the fifth corrugated plate 13 are welded to the bottom surface of the steel frame assembled in the first step to form an interlayer shear-resistant frame, and the welding positions are sprayed with insulating paint.

[0045] Prestressed tendons 14 are inserted into the "ballastless track slab area" and tensioned. The prestressed tendons 14 pass through the pre-reserved openings 6 in the main corrugated slab 3 and the first and second corrugated slabs 9 and 10. After the ballastless track slab concrete is poured, a small portion of the perforated channel steel 4 and the third, fourth, and fifth corrugated slabs 11, 12, and 13 are embedded within the track slab. The vast majority are exposed at the bottom of the track slab. These exposed components act as shear-resistant devices to resist interlayer slippage between the track slab and the infill layer. The perforated channel steel 4 provides support and a working platform for the erection of the infill layer reinforcement. In traditional construction, this reinforcement skeleton is built on the foundation layer, which is not conducive to controlling the construction period. Now, this process can be prefabricated in the factory.

[0046] A reinforcing mesh is constructed for the filling layer. This mesh passes through the exposed perforated channel steel 4 and the pre-drilled openings 6 in the third, fourth, and fifth corrugated plates 11, 12, and 13. Furthermore, single reinforcing bars are inserted into the third, fourth, and fifth corrugated plates 11, 12, and 13 to enhance the bond between the corrugated plates and the concrete. The reinforcing bars are insulated and tied to the corrugated plates.

[0047] The base plate 1 is fabricated on-site after the bridge deck or road surface is cleaned. The base plate 1 has a pre-reserved groove 16 to ensure that the third strip corrugated plate 11, the fourth strip corrugated plate 12, and the fifth strip corrugated plate 13 can be inserted into the groove 16, and the groove 16 is chamfered. Then the geotextile 17 is laid.

[0048] The precast ballastless track slab is hoisted to the designated position on the upper part of the base plate 1 and cleaned using a high-pressure water gun. Self-compacting concrete is poured, with the remaining portion of the perforated channel steel 4 completely embedded within the filling layer formed by the self-compacting concrete. Parts of the third corrugated plate 11, the fourth corrugated plate 12, and the fifth corrugated plate 13 still protrude from the bottom surface of the filling layer. Figure 11 As shown, it extends into the groove 16 of the base plate 1, and eventually the groove 16 will also be filled with self-compacting concrete.

[0049] Supported by perforated channel steel 4 and the third, fourth, and fifth corrugated plates 11, 12, and 13, the structural reinforcement of the filling layer can be pre-tied in the factory and directly hoisted to the site. To a certain extent, the precast ballastless track slab and the filling layer of this invention share a single reinforcing steel skeleton. This effectively improves the coordinated deformation capacity of both and reduces the risk of interlayer cracking. It has good overall integrity, and the factory prefabrication of the reinforcing steel is higher. The upper part of the base plate 1 has intersecting strip grooves, and the corners are chamfered. During operation, this helps prevent cracking at the corners of the grooves due to stress concentration. It further limits interlayer slip cracking between the filling layer and the base plate 1. Some of the third, fourth, and fifth corrugated plates 11, 12, and 13 are placed in the strip grooves of the slot 16. A steel frame, composed of the main corrugated plate 3, the first strip corrugated plate 9, the second strip corrugated plate 10, the third strip corrugated plate 11, the fourth strip corrugated plate 12, the fifth strip corrugated plate 13, and the perforated channel steel 4, integrates the precast ballastless track slab, filling layer, and base plate into a whole. This helps prevent interlayer cracking and reduces cracking between layers.

[0050] In the description of this invention, it should be noted that the terms "center," "top," "bottom," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A CRTS-Ⅲ type ballastless track, characterized in that: The system includes a base plate, a track plate, and a filling layer. The filling layer is formed by pouring self-compacting concrete between the track plate and the base plate. A corrugated steel frame is embedded within the track plate. The corrugated steel frame is assembled from a main corrugated plate, perforated channel steel, and strip corrugated plates. The main corrugated plate is an integrally formed structure, including multiple concave grooves and convex blocks arranged at intervals. The concave grooves include two main inclined plates with opposite inclination directions and a main horizontal plate. The convex blocks include two main inclined plates with opposite inclination directions and a main horizontal plate. Adjacent concave grooves and convex plates share the same main inclined plate. The two ends of the main horizontal plate of the concave groove are integrally formed with the bottom of two adjacent main inclined plates, and the two ends of the main horizontal plate of the convex blocks are integrally formed with the top of two adjacent main inclined plates. Multiple openings are provided on both the main horizontal plate and the main inclined plate. Positioning bolt holes are provided at both the front and rear ends of the main inclined plate and the main horizontal plate. A grouting pre-reserved hole is provided in the middle of the main horizontal plate of the concave groove.

2. The CRTS-Ⅲ type ballastless track according to claim 1, characterized in that: The corrugated strip plate includes a first corrugated strip plate and a second corrugated strip plate. The first corrugated strip plate includes multiple first portal frames. The bottom of the side plates of two adjacent first portal frames are integrally formed by a first connecting plate. The horizontal top plate and two side plates of the first portal frames are provided with openings. The second corrugated strip plate includes multiple second portal frames. The bottom of the side plates of two adjacent second portal frames are integrally formed by a second connecting plate. The horizontal top plate and two side plates of the second portal frames are provided with openings. The first connecting plate and the second connecting plate are both provided with openings, and the second connecting plate located in the middle is provided with a grouting pre-reserved hole. Multiple first corrugated strip plates are matched and snapped onto the concave groove and convex block of the main corrugated plate. Multiple second corrugated strip plates are matched and snapped onto the concave groove and convex block of the main corrugated plate, and the second corrugated strip plates are located at the grouting pre-reserved hole position of the main corrugated plate.

3. The CRTS-Ⅲ type ballastless track according to claim 2, characterized in that: The corrugated plate further includes a third corrugated plate, a fourth corrugated plate, and a fifth corrugated plate; the third corrugated plate includes a third portal frame, with horizontal first extended flanges on both sides of the bottom of the third portal frame, and openings on both the third portal frame and the first extended flanges; the fourth corrugated plate includes a fourth portal frame, with horizontal second extended flanges on both sides of the bottom of the fourth portal frame, and openings on the fourth portal frame; the fifth corrugated plate includes a fifth portal frame, with horizontal third extended flanges on both sides of the bottom of the fifth portal frame, and openings on the fifth portal frame; arc-shaped grooves are provided on the outer sides of both the second and third extended flanges; after multiple fourth and fifth corrugated plates are longitudinally welded to the bottom of the main corrugated plate, multiple third corrugated plates are then transversely welded.

4. The CRTS-Ⅲ type ballastless track according to claim 1, characterized in that: The perforated channel steel is fixedly installed at the positioning bolt holes of the main corrugated plate by bolts, and the perforated channel steel is located below the main corrugated plate.

5. The CRTS-Ⅲ type ballastless track according to claim 2, characterized in that: Multiple prestressing tendons are inserted into the openings of the first strip corrugated plate, the second strip corrugated plate, and the main corrugated plate. The prestressing tendons include multiple transverse steel bars and multiple longitudinal steel bars.

6. The CRTS-Ⅲ type ballastless track according to claim 3, characterized in that: The filling layer is provided with a steel mesh, which is inserted into the openings of the third, fourth, and fifth corrugated plates and the perforated channel steel; a single structural steel bar is inserted into the third, fourth, and fifth corrugated plates.

7. The CRTS-Ⅲ type ballastless track according to claim 3, characterized in that: The base plate has a slot at the top, which is a cross-shaped groove structure. The bottom of the third, fourth, and fifth corrugated plates can penetrate the filling layer and be snapped into the slot.

8. The CRTS-Ⅲ type ballastless track according to claim 1, characterized in that: Geotextile is laid between the base plate and the filling layer.

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