Intelligent frame slab ballastless track structure
By embedding FRP-OFBG intelligent composite ribs and fiber optic grating sensors inside the track slab, combined with cover plates and hollow channels, the warping and monitoring problems of CRTSⅠ type slab track were solved, realizing intelligent monitoring and vibration reduction of the track structure, and enhancing structural stability and driving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANGHAI INST OF TECH
- Filing Date
- 2023-09-19
- Publication Date
- 2026-04-21
AI Technical Summary
The existing CRTSⅠ type slab track is prone to warping, cracking and mortar damage under train load and temperature load, and there is a lack of effective monitoring methods, which affects its service life and operational safety.
The track adopts an intelligent frame slab ballastless track structure. By embedding FRP-OFBG intelligent composite ribs and fiber optic grating sensors inside the track slab, combined with cover plates and hollow channels, it can monitor the temperature stress of the track slab and reduce vibration. It uses solar power for real-time monitoring and forms a hollow structure inside the track slab to mitigate warping.
It effectively reduces track slab warping caused by temperature stress, enhances structural stability and vibration reduction performance, extends service life, provides storage space for easy maintenance, enables intelligent monitoring of track service performance, and improves driving safety and comfort.
Smart Images

Figure CN117051623B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of intelligent construction of high-speed railways, specifically relating to an intelligent frame slab ballastless track structure. Background Technology
[0002] Currently, CRTSⅠ type slab track in my country generally uses reinforced concrete structures. Some ballastless tracks are located in harsh environments, and under the combined effects of train loads and temperature loads, the track slabs warp and deform, causing cracks and mortar damage, severely impacting their service life. For CRTSⅠ type frame slab track, debris easily accumulates within the track frame, and water easily seeps into the gaps between the track slab and the base, leading to mortar cracking and other defects. Furthermore, it greatly inconveniences workers during maintenance and machinery installation.
[0003] For example, Chinese patent CN201821970251.2 discloses a frame-type ballastless track slab and ballastless track system, which allows observation of the filling layer status through through holes. Although this partially solves the above problems, it still lacks a means of continuous and complete monitoring, making it impossible to detect the occurrence of defects in a timely manner.
[0004] In addition, the development focus of ballastless track for high-speed railways in my country has shifted from construction to operation monitoring. The service performance status of ballastless track structure is directly related to the operation status of high-speed trains. Therefore, it is necessary to monitor the key parameters of its service performance status online. Summary of the Invention
[0005] The purpose of this invention is to provide an intelligent frame-type ballastless track structure to solve at least one of the aforementioned problems. This structure addresses the issue of track slab warping caused by temperature stress. By installing cover plates on the frame track slab, the warping caused by temperature stress is effectively mitigated, improving the track structure's vibration damping performance and enhancing driving safety and comfort. It also effectively solves the problem of water accumulation, facilitating the movement of maintenance personnel during daily inspections. Furthermore, by deploying sensors and intelligent composite reinforcement in relevant parts of the ballastless track structure to monitor the structure, and using solar energy as an energy source, it can be connected to external equipment for intelligent real-time monitoring of key parameters of the ballastless track's service performance. This enriches the methods and structural forms for monitoring key parameters of the ballastless track structure's service performance.
[0006] The objective of this invention is achieved through the following technical solution:
[0007] A smart frame slab ballastless track structure includes a track slab and a cover plate;
[0008] The track slab includes FRP-OFBG intelligent composite reinforcement (fiber-reinforced resin fiber grating intelligent composite reinforcement), fiber grating sensor, steel mesh and core mold. The FRP-OFBG intelligent composite reinforcement, fiber grating sensor, steel mesh and core mold are all embedded inside the track slab, which is formed by concrete pouring.
[0009] The track slab has a pair of hollow frame structures, which are closed by cover plates and connected by hollow channels.
[0010] The track slab is provided with core molds spaced apart along its length. The core molds are located above the steel mesh and are symmetrically arranged on both sides of the frame structure connection line.
[0011] The fiber optic grating sensor and the FRP-OFBG smart composite rib are led into the frame structure of the track slab through optical fiber lines to form a quick-plug data transmission connection hole for connecting to external monitoring equipment.
[0012] Preferably, the track slab has an axisymmetric structure, and the frame structure is arranged along the length of the track slab on its center line.
[0013] Preferably, the outer surface of the cover plate is provided with a solar panel, and the inner surface of the cover plate is provided with an energy storage device. The solar panel and the energy storage device are electrically connected. The cover plate is fitted onto the frame structure to form a closed space, which can increase storage space and facilitate daily inspection work by maintenance personnel. Monitoring equipment can also be temporarily placed in this space, enabling the monitoring equipment to quickly form an electrical connection with the fiber optic grating sensor and the energy storage device, read data as needed, and facilitate power supply for on-site testing of monitoring equipment.
[0014] Preferably, it includes one or more of the following:
[0015] The cover plate is a composite resin plate, which has the advantages of high strength and lightweight.
[0016] The cover plate is provided with an opening, and a rubber cover is fitted inside the opening to facilitate the passage of wires and the opening and closing of the cover plate;
[0017] The inner surface of the cover plate is provided with a rubber gasket to reduce wear on the frame structure and improve water resistance;
[0018] The inner wall of the frame structure is provided with a locking structure for locking the cover plate to prevent the cover plate from bouncing up due to vibration when it is closed.
[0019] More preferably, the locking structure includes a magnetic block or a chain.
[0020] Preferably, the cover plate is hinged to the frame structure via a rotating shaft to achieve the opening and closing of the cover plate.
[0021] Preferably, the fiber Bragg grating sensor includes a fiber Bragg grating strain sensor and a fiber Bragg grating temperature sensor. The fiber Bragg grating sensor is connected to the frame structure via fiber optic cables, forming a quick-pluggable data transmission connection, which facilitates connection with external monitoring equipment for online transmission and management of key parameters of ballastless track service performance.
[0022] FRP-OFBG intelligent composite reinforcement is deployed according to actual monitoring needs, enabling long-term health monitoring of track slabs. Fiber optic grating sensors and FRP-OFBG intelligent composite reinforcement together form an intelligent track slab monitoring system.
[0023] Preferably, before pouring concrete, a core mold of the corresponding shape and size is set at the corresponding position to reserve space for the track slab.
[0024] More preferably, the core mold is a circular core mold, and the core mold used to form the hollow channel is an inflatable core mold for positioning. The circular core molds are placed at intervals on the steel mesh, and the inflatable core mold is placed in the center of the track slab and bound to the steel mesh. Concrete is poured between the steel mesh, the circular core mold, and the inflatable core mold.
[0025] More preferably, the circular mandrel comprises a polystyrene foam core layer (EPS) and a polyester fiberglass cloth wrapping layer, the polyester fiberglass cloth wrapping layer completely enclosing the polystyrene foam core layer. The circular shape of the mandrel facilitates the flow of concrete into the bottom of the mandrel to fill the interior of the reinforcing mesh.
[0026] More preferably, the inflatable mandrel is made of rubber and fiber-reinforced layers through vulcanization, possessing high tensile strength, elasticity, and airtightness, and is used to form the concrete cavity in the middle part of the track slab. During construction, it inflates to provide sufficient strength to withstand the pressure of the concrete, and is deflated and removed after construction is complete.
[0027] Preferably, it also includes a base, a cement emulsified asphalt mortar adjustment layer, a convex retaining platform, and a rail support platform;
[0028] The base has convex baffles on both longitudinal ends of its surface;
[0029] The track plate has a notch at the corresponding position of the convex baffle, and the convex baffle is fitted into the notch of the track plate to form a center limiting combination structure at both ends;
[0030] The aforementioned rail support platforms are spaced apart on the track plate and are staggered with the core mold;
[0031] The base, convex baffle, and rail support platform are cast in shape.
[0032] When the base, convex stop, and rail support are the same as the existing CRTSⅠ type slab track, the horizontal distance from the side of the frame structure to the center of the convex stop is 600-1000mm, preferably 800mm, the length-to-width ratio of the frame structure is 4:3, and the frame structures on both sides are set with the same dimensions.
[0033] Preferably, a buffer layer is filled between the track slab and the convex baffle to improve the vibration damping performance of the track slab, and the buffer layer is an annular resin layer.
[0034] Preferably, the track slab is bonded and fixed to the base by a cement emulsified asphalt mortar adjustment layer.
[0035] Preferably, a vibration damping layer is provided between the cement emulsified asphalt mortar adjustment layer and the base. In vibration damping sections, the vibration damping material added under the cement emulsified asphalt mortar adjustment layer is beneficial for vibration reduction when the train passes.
[0036] Compared with the prior art, the present invention has the following beneficial effects:
[0037] This invention can solve at least the following three problems existing in the prior art: First, the core mold inside the track slab forms a hollow structure, reducing material consumption; second, the cover plate placed on the frame structure not only effectively reduces the warping of the track slab caused by temperature stress, but also forms a storage space and facilitates the movement of people and trolleys for maintenance; third, multiple sensors work together to form an intelligent track slab, realizing long-term health monitoring of the track slab.
[0038] More specifically:
[0039] This invention provides an intelligent frame slab ballastless track structure with high structural strength and reasonable stress distribution. Compared with the traditional CRTSⅠ type slab ballastless track, it not only saves materials, but also increases storage space due to the frame structure set on the track slab. The installed solar power supply cover facilitates daily inspection work by maintenance personnel and facilitates power supply for on-site testing and monitoring equipment.
[0040] Furthermore, installing cover plates can isolate the track slab from direct contact with the external environment to a certain extent, or help disperse stress caused by temperature. This effectively reduces warping deformation caused by temperature gradients, makes the track slab more evenly stressed, enhances structural stability, reduces track slab cracking and mortar damage, and extends the service life of the track slab. Moreover, the frame structure is connected by hollow channels. When temperature changes cause temperature stress or train swaying causes deformation of the track slab, the hollow channels can coordinate uneven deformation on both sides, enhancing structural stability, improving the vibration reduction performance of the track structure, and enhancing driving safety and comfort.
[0041] Furthermore, real-time intelligent monitoring of the track slab's service safety is achieved through FRP-OFBG intelligent composite reinforcement and fiber optic grating sensors. This track slab can be directly and effectively connected to the current CRTSⅠ type slab track slab of high-speed railways, enabling rapid construction, convenient maintenance, and suitability for industrial production. It not only benefits train vibration reduction and ensures traffic safety but also enriches the methods and structural forms for monitoring key parameters of ballastless track structure service performance. Attached Figure Description
[0042] Figure 1 A schematic diagram of the intelligent frame slab track structure;
[0043] Figure 2 This is a schematic diagram of the track slab structure;
[0044] Figure 3 This is a perspective structural diagram of the track slab;
[0045] Figure 4 A top view schematic diagram of the intelligent frame slab ballastless track structure;
[0046] Figure 5 This is a structural diagram of the frame structure and the cover plate;
[0047] In the diagram: 1-track slab; 2-cover plate; 3-base; 4-cement emulsified asphalt mortar adjustment layer; 5-convex baffle; 6-rail support platform; 7-monitoring equipment; 8-buffer layer; 11-FRP-OFBG intelligent composite reinforcement; 12-fiber grating strain sensor; 13-fiber grating temperature sensor; 14-steel mesh; 15-core mold; 16-hollow channel; 17-concrete; 18-fiber optic cable; 21-solar panel; 22-battery; 23-controller; 24-protective cover; 25-rubber cover; 26-rubber gasket; 27-rotating shaft; 28-locking structure; 29-rubber sleeve. Detailed Implementation
[0048] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.
[0049] The examples given are for illustrative purposes only and are not intended to limit the scope of the invention. The invention is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the invention will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.
[0050] In the description of this invention, unless otherwise expressly specified and limited, the terms "set," "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. When a component is considered to be "set on" another component, it can be directly set on the other component or an intervening component may be present simultaneously. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
[0052] Example 1
[0053] A smart frame slab ballastless track structure, such as Figure 1-5 As shown, it includes track plate 1 and cover plate 2;
[0054] The track slab 1 includes FRP-OFBG intelligent composite reinforcement 11, fiber optic grating sensor, steel mesh 14 and core mold 15, all of which are embedded inside the track slab 1 and formed by concrete 17.
[0055] The track plate 1 is provided with a pair of hollow frame structures, which are closed by cover plates 2, and the frame structures are connected by hollow channels 16.
[0056] The track slab 1 is provided with core molds 15 spaced apart along the length direction inside, located above the steel mesh 14, symmetrically arranged on both sides of the frame structure connection line, and staggered with the track support platform 6.
[0057] The fiber optic grating sensor and the FRP-OFBG smart composite rib 11 are led into the track slab frame structure through the fiber optic cable 18 to form a quick-plug data transmission connection hole, which is convenient for connection with external monitoring equipment 7.
[0058] More specifically, in this embodiment:
[0059] like Figure 2 and Figure 3As shown, the track slab 1 is cast from concrete 17 (selected according to construction requirements), and has embedded steel mesh 14, fiber optic grating sensors, and FRP-OFBG intelligent composite reinforcement 11 inside. The track slab 1 has an axisymmetric structure, with a pair of rectangular frame structures with rounded corners symmetrically arranged on both sides of the central axis. The frame structures are hollow inside, open on the top, and have chamfered bottoms and stepped structures on the top. They can be closed by cover plates 2 hinged to the openings and inside the stepped structures. The two frame structures are interconnected by multiple hollow channels 16 arranged in parallel.
[0060] The FRP-OFBG intelligent composite rib 11, fiber optic strain sensor 12, and fiber optic temperature sensor 13 are all positioned according to the required monitoring locations. Figure 3 (This is only a schematic structure for this embodiment). An optical fiber line 18 leads into the frame structure, forming a quick-plug data transmission connection. This facilitates connection with external monitoring equipment 7, forming an intelligent track slab 1 monitoring system based on fiber optic gratings for long-term monitoring of the track slab 1's service condition. Inside the track slab 1, above the reinforcing mesh 14, are two rows of cylindrical core molds 15. The two rows of core molds 15 are symmetrically arranged with respect to the line connecting the frame structure, and the core molds 15 in each row are evenly spaced (alternating to correspond to the positions of the further constructed track support platforms 6 on the track slab 1).
[0061] As described above, before the concrete 17 is poured, a core mold 15 of corresponding shape and size is set at the corresponding position of the track slab 1 to occupy space for forming a partially hollow structure and hollow channel 16. The core mold 15 is a circular core mold, and an inflatable core mold is used to occupy space at the hollow channel 16. Figure 3 As shown, before pouring, the circular core molds are positioned on the reinforcing mesh 14, and the inflatable core mold is placed at the center of the track slab 1, at the connection point between the two frame structures, and bound to the reinforcing mesh 14. During pouring, concrete 17 fills the space between the reinforcing mesh 14, the circular core molds, and the inflatable core molds. Further, the circular core mold includes a polystyrene foam core layer (EPS) and a polyester fiberglass cloth wrapping layer, wherein the polyester fiberglass cloth wrapping layer completely covers the outside of the polystyrene foam core layer. The circular core mold allows concrete 17 to easily flow into the bottom of the core mold and into the reinforcing mesh 14 for filling. The inflatable core mold is made of rubber and fiber reinforcement layers through vulcanization, possessing high tensile strength, elasticity, and airtightness, and is used to form the cavity in the middle part of the track slab 1.
[0062] like Figure 5 As shown, the cover plate 2 that fits into the opening of the frame structure is hinged by the rotating shafts 27 on both sides, and a rubber sleeve 29 is installed on the rotating shaft 27. The rubber sleeve 29 increases the resistance, making the opening and closing action smoother and more controllable.
[0063] The cover plate 2 is made of composite resin board, and the inner side is provided with elastic rubber gaskets 26 along the circumference to reduce wear on the frame structure and further improve the waterproofness and sealing of the frame structure. A rounded rectangular opening is provided on the cover plate 2 to facilitate opening and closing of the cover plate 2; a rubber cover 25 is installed in the opening to facilitate the passage and connection of internal and external wires while maintaining good sealing. A locking structure 28 is provided on the inner wall of the frame structure to lock the cover plate 2 when it is closed, preventing the cover plate 2 from popping up due to vibration and affecting normal use and operation; the locking structure 28 can be made of magnetic blocks, which achieve a firm closure through magnetic attraction combined with gravity, or it can be made of chain structure to achieve a firm closure through structural restriction. A solar panel 21 is installed at the center of the front of the cover plate 2. An energy storage device connected to the solar panel 21 via wires is installed on the back of the cover plate 2. This energy storage device further includes a battery 22 and a controller 23. The battery 22 stores the electrical energy converted from the solar panel 21, and the controller 23 controls the charging and discharging of the battery 22. A protective cover 24 is installed around the energy storage device and on the inner side of the cover plate 2, providing further sealing for the electrical components and reducing safety risks. The frame structure further provides storage space and facilitates routine inspection work by maintenance personnel. The energy storage device on the cover plate 2 provides power to the monitoring equipment 7 connected for on-site testing, greatly facilitating routine inspection work.
[0064] Example 2
[0065] A smart frame slab ballastless track structure, such as Figure 1-5 As shown, it also includes a base 3, a convex baffle 5, a cement emulsified asphalt mortar adjustment layer 4, a rail support platform 6, and a track slab 1 as described in Example 1;
[0066] The convex baffles 5 are provided in pairs and are symmetrically arranged at both ends of the base 3;
[0067] The track plate 1 is confined between the convex baffles 5;
[0068] The rail support platform 6 is spaced apart on the track slab 1;
[0069] The base 3, the convex baffle 5, and the rail support 6 are cast and formed.
[0070] More specifically, in this embodiment:
[0071] like Figure 1-4As shown, the intelligent frame slab ballastless track structure consists of a base 3, convex baffles 5, rail support platforms 6, and the track slab 1 of Embodiment 1, all of which are axisymmetric structures. The convex baffles 5 are symmetrically positioned at the center of opposite sides of the base 3, and are cylindrical in shape. The center of opposite sides of the track slab 1 is positioned within a matching concave arc of the convex baffles 5; the two work together to position and limit the track slab 1. The rail support platforms 6 are designed in two rows, staggered and equally spaced to correspond to the positions of the core molds 15 inside the track slab 1. The base 3 (reinforced concrete base 3), convex baffles 5, and rail support platforms 6 are integrally cast.
[0072] A buffer layer 8 is provided between the convex baffle 5 and the track slab 1 to fill the gap between them and improve the vibration damping performance of the track slab 1. The buffer layer 8 can be filled with annular resin.
[0073] The track slab 1 and the base 3 are filled and bonded together as a whole using a cement emulsified asphalt mortar adjustment layer 4. Furthermore, in areas requiring vibration reduction, vibration damping material can be installed below the cement emulsified asphalt mortar adjustment layer 4, which is beneficial for vibration reduction during train passage.
[0074] This intelligent frame slab track structure is an improvement on the CRTSⅠ type slab track. It can be effectively connected with the existing high-speed railway CRTSⅠ type slab track. Therefore, the dimensions of the base 3, the convex abutment 5, and the rail support platform 6 are consistent with the dimensions in the existing structure. At this time, the size ratio of the two frame structures is 1:1, the length-to-width ratio is controlled at 4:3, and the horizontal distance from the edge of the frame structure to the center of the convex abutment 5 is 600-1000mm. In this embodiment, it is preferably 800mm, which can realize rapid construction on the existing high-speed railway CRTSⅠ type slab track foundation.
[0075] The track slab 1 and the intelligent frame slab ballastless track structure based on it achieve online monitoring of the service performance status of the ballastless track structure by rationally deploying sensors and FRP-OFBG intelligent composite ribs 11 in relevant parts of the ballastless track structure and using solar energy as the energy supply for the external monitoring equipment 7. Compared with the traditional CRTSⅠ type slab ballastless track, it not only saves materials, but the frame structure set on the track slab 1 can also increase storage space. The installed solar power supply cover 2 facilitates daily inspection work by maintenance personnel and facilitates power supply for on-site test monitoring equipment 7. Furthermore, by installing the cover 2, the direct contact between the track slab 1 and the external environment can be isolated to a certain extent, or the stress caused by temperature can be dispersed, thereby effectively reducing the warping deformation caused by temperature gradient, making the track slab 1 more uniformly stressed, enhancing structural stability, reducing the occurrence of defects such as cracking and mortar damage in the track slab 1, and extending the service life of the track slab 1. Furthermore, the frame structures are connected by hollow channels 16. When temperature changes cause temperature stress or train swaying leads to deformation of the track slab 1, the hollow channels 16 can coordinate the uneven deformation on both sides, enhancing the stability of the structure, improving the vibration reduction performance of the track structure, and enhancing driving safety and comfort. This track slab 1 can be directly and effectively connected to the current CRTSⅠ type slab track slab of high-speed railways, enabling rapid construction and convenient maintenance. It is suitable for industrial production, which is beneficial for train vibration reduction and ensuring driving safety, and also enriches the methods and structural forms for monitoring key parameters of ballastless track structure service performance.
[0076] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.
Claims
1. A smart frame slab ballastless track structure, characterized in that, Includes track slab (1) and cover plate (2); The track slab (1) includes FRP-OFBG intelligent composite reinforcement (11), fiber optic grating sensor, steel mesh (14) and core mold (15). The FRP-OFBG intelligent composite reinforcement (11), fiber optic grating sensor, steel mesh (14) and core mold (15) are all embedded inside the track slab (1). The track slab (1) is formed by pouring concrete (17). The track plate (1) is provided with a pair of hollow frame structures, which are closed by cover plates (2) and connected by hollow channels (16); the track plate (1) is an axisymmetric structure, and the frame structures are arranged along the length of the track plate (1) on its center line. The cover plate (2) is hinged to the frame structure by a rotating shaft (27); the cover plate (2) is a composite resin plate; the cover plate (2) is provided with an opening, and a rubber cover (25) is installed in the opening; a rubber gasket (26) is provided on the inner surface of the cover plate (2); a locking structure (28) for locking the cover plate (2) is provided on the inner wall of the frame structure; by installing the cover plate (2), the warping deformation caused by the temperature gradient is reduced, and the hollow channels (16) coordinate the uneven deformation of the frame structures on both sides, thereby enhancing the stability of the structure. The track slab (1) is provided with core molds (15) spaced apart along the length direction. The core molds (15) are located above the steel mesh (14) and are symmetrically arranged on both sides of the frame structure connection line. The fiber optic grating sensor and the FRP-OFBG smart composite rib (11) are led to the frame structure of the track slab (1) through the fiber optic cable (18) for connection with the external monitoring equipment (7).
2. The intelligent frame slab ballastless track structure according to claim 1, characterized in that, The outer surface of the cover plate (2) is provided with a solar panel (21), and the inner surface of the cover plate (2) is provided with an energy storage device. The solar panel (21) is electrically connected to the energy storage device.
3. The intelligent frame slab ballastless track structure according to claim 1, characterized in that, The fiber Bragg grating sensor includes a fiber Bragg grating strain sensor (12) and a fiber Bragg grating temperature sensor (13).
4. The intelligent frame slab ballastless track structure according to claim 1, characterized in that, It also includes a base (3), a cement emulsified asphalt mortar adjustment layer (4), a convex baffle (5) and a rail support platform (6). The base (3) is provided with convex baffles (5) on both longitudinal ends of the surface; The track plate (1) has a notch at the corresponding position of the convex baffle (5), and the convex baffle (5) is embedded in the notch of the track plate to form a center limiting combination structure at both ends; The rail support platform (6) is spaced apart on the rail plate (1) and is staggered with the core mold (15); The base (3), the convex baffle (5) and the rail support (6) are cast and formed.
5. The intelligent frame slab ballastless track structure according to claim 4, characterized in that, A buffer layer (8) is filled between the track plate (1) and the convex baffle (5).
6. The intelligent frame slab ballastless track structure according to claim 4, characterized in that, The track slab (1) is bonded and fixed to the base (3) by a cement emulsified asphalt mortar adjustment layer (4).
7. The intelligent frame slab ballastless track structure according to claim 6, characterized in that, A vibration damping layer is provided between the cement emulsified asphalt mortar adjustment layer (4) and the base (3).
Citation Information
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