Transverse assembly type ballastless track and track construction method

Abstract

The invention discloses a transverse assembly type ballastless track and a track construction method.The transverse assembly type ballastless track is arranged on a track foundation and comprises a track plate arranged above the track foundation and an under-plate concrete layer poured in a gap between the track plate and the track foundation. Wherein the track plate is formed by transversely and oppositely assembling two sets of track single plates, notches are formed in the edge of one side of each track single plate, downward strip-shaped bosses are arranged at the bottom end of the edge of the side, and when the two sets of track single plates are transversely and oppositely assembled, the two sets of notches oppositely form a through hole, and the two sets of strip-shaped bosses oppositely form a first boss; the top of the under-plate concrete layer is correspondingly provided with a second boss capable of being inserted into the through hole and an inserting groove allowing the first boss to be inserted therein. The problems that the cast-in-place track construction efficiency is low, the concrete cast-in-place quality is difficult to control, the assembly type track transportation difficulty is large, and the overall stability is poor are solved, and the defects that interface debonding and seam opening are prone to occurring between the track plate and the adjusting layer are effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of urban rail transit, and in particular to a transverse assembled ballastless track and a track construction method. Background Art

[0002] At present, urban rail transit mainly adopts cast-in-place track structure, including short-sleeper integral ballast and long-sleeper integral ballast structure. The short-sleeper type has poor geometric shape retention ability, and the rail bottom slope and superelevation of the two short sleepers need to be adjusted at the same time, and the construction accuracy is low; the long-sleeper type has more contact surfaces between new and old concrete, relatively more interface cracks, and poor structural integrity. At the same time, cast-in-place track structures have many disadvantages such as slow construction progress, large amount of on-site concrete pouring, difficult quality control of cast-in-place concrete, high labor intensity, harsh working environment, many and difficult to control cracks in the cast-in-place ballast, difficult maintenance, and difficult to ensure vibration reduction effect.

[0003] At present, many cities in China have proposed and promoted the application of prefabricated plate track to solve various shortcomings of cast-in-place reinforced concrete track bed structures. However, it can be seen from the existing prefabricated track structure that the prefabricated plate track technology generally has the following technical difficulties: the existing prefabricated plate track structure has a large number of special-shaped plates, and the weight of a single track plate is too large, resulting in low factory production efficiency and inconvenience for the stacking, transportation and on-site assembly of the track plate; moreover, due to the high flatness requirements of the lower foundation of the prefabricated plate track, a cast-in-place adjustment layer is often used to adjust the track structure line shape, resulting in a large amount of on-site wet joint concrete pouring, and complex construction procedures, although it is a prefabricated structure; in addition, due to the existence of the adjustment layer, the track structure has an interface between the new and old concrete. After the line has been running for a period of time, the interface debonding and separation between the prefabricated track plate and the adjustment layer is prone to occur, which will have an adverse effect on the stability and comfort of the train operation and the life of the track structure.

[0004] In view of this, in order to solve the above-mentioned technical problems, the present invention aims to propose a transverse assembled ballastless track and a track construction method to solve the problems of low construction efficiency of existing cast-in-place track structures, difficulty in quality control of cast-in-place concrete, and difficulty in transportation of existing assembled track structures and poor overall stability. Summary of the invention

[0005] In order to overcome the technical problems described in the prior art, the object of the present invention is to provide a transverse assembled ballastless track and a track construction method.

[0006] In a first aspect, the present invention provides a transverse assembled ballastless track, arranged on a track foundation, comprising: A track plate is arranged above the track foundation and is formed by assembling two sets of track plates in a transverse direction. A sub-slab concrete layer is poured in the gap between the track slab and the track foundation; A notch is provided on one side edge of the track single plate, and a strip-shaped boss facing downward is provided at the bottom end of the side edge. When two groups of track single plates are assembled horizontally relative to each other, the two groups of notches form through holes, and the two groups of strip-shaped bosses form a first boss. A second boss capable of being inserted into the through hole and a plug-in slot capable of being inserted into the first boss are correspondingly provided on the top of the concrete layer under the slab.

[0007] As a preferred technical solution, the track plate also includes a connecting component, which includes a tensioning lock with threaded steel bars rotatably connected at both ends, and an internal threaded sleeve is embedded in the notch. When two groups of the track veneers are assembled horizontally relative to each other, the threaded steel bars at both ends of the tensioning lock can be correspondingly screwed into the internal threaded sleeve of the notch, so that the two groups of the track veneers are assembled and connected; wherein, when the concrete layer under the slab is poured, the connecting component is integrated with the second boss as an embedded part.

[0008] As a preferred technical solution, a plurality of notches are evenly formed on the side edge of the track single plate, and a downward strip-shaped boss is provided at the bottom end of the side edge except for the notches.

[0009] As a preferred technical solution, the notch is a rectangular notch with chamfers.

[0010] As a preferred technical solution, elastic buffer pads are bonded between the insertion groove and the first boss, and between the through hole and the second boss.

[0011] As a preferred technical solution, when two groups of the track single plates are assembled laterally relative to each other, a first isolation pad is bonded between any two groups of the strip-shaped bosses.

[0012] As a preferred technical solution, a second isolation pad is provided between the track slab and the concrete layer under the slab.

[0013] As a preferred technical solution, steel bars are pre-embedded in the top of the track foundation so that the concrete layer under the slab forms a whole with the track foundation when it is poured.

[0014] As a preferred technical solution, a plate gap is left between two adjacent groups of the track plates in the assembled ballastless track to provide installation space for the arrangement of other components such as grounding terminals and track crossing pipelines.

[0015] In a second aspect, based on the above-mentioned transverse assembled ballastless track, the present invention further provides a track construction method, comprising the following steps: Prefabricated plate: The track veneer is prefabricated in the factory, a notch is opened on one side edge of the track veneer, a downward strip boss is set at the bottom end of the side edge, and an internal threaded sleeve is embedded in the notch; Surface treatment: bonding an elastic buffer pad to the surface of the notch, bonding a first isolation pad to the surface of the strip boss, and bonding a second isolation pad to the bottom of the track veneer; Track foundation construction: install the track foundation mold and embed the steel bars to cast the track foundation; Laying track slabs: assemble two sets of track veneers horizontally relative to each other, position and roughly lay them, connect the two sets of track veneers through connecting components to form a track slab as a whole, and apply pre-pressure to the two sets of track veneers; Construction of the concrete layer under the slab: Install the intermediate concrete layer mold and pour the self-compacting concrete through a through hole to form the concrete layer under the slab; Track structure construction: Install rail supports on both sides of the top of the track slab, fix the rails on the rail supports with fasteners, and remeasure the track structure line shape.

[0016] In summary, the present invention has the following technical effects: The present invention discloses a transversely assembled ballastless track and a track construction method. The transversely assembled ballastless track is arranged on a track foundation, and includes: a track plate arranged above the track foundation, and a sub-plate concrete layer cast in the gap between the track plate and the track foundation. The track plate is formed by assembling two sets of track single plates in a transverse direction. A notch is provided on one side edge of the track single plate, and a strip-shaped boss facing downward is provided at the bottom end of the side edge. When the two sets of track single plates are assembled in a transverse direction, the two sets of notches form a through hole, and the two sets of strip-shaped bosses form a first boss. A second boss capable of being inserted into the through hole and a plug-in slot capable of being inserted into the first boss are provided on the top of the sub-plate concrete layer. The transverse assembled ballastless track and track construction method of the present invention have the following technical advantages: 1. The overall track structure of the present invention is composed of a track plate and a concrete layer under the plate. The main components of the track can be standardized and prefabricated in factories. The design and construction method of "breaking the whole into parts" and then "integrating the parts into a whole" is adopted. It can be fully assembled at the construction site or factory, reducing the amount of concrete poured on site and improving construction quality efficiency. The overall track structure adopts a design that eliminates the base, which can effectively save construction costs. 2. The track plate of the present invention is a factory-prefabricated structure. The track plate unit is miniaturized and lightweight, which is more convenient for production, stacking, transportation and on-site assembly; the small modular prefabricated basic plate is easier to replace in the event of damage on site, effectively reducing the workload of engineering maintenance and improving production efficiency. 3. The track plate of the present invention is assembled and installed by connecting components, which has reliable connection, high degree of factory and mechanized operation, neat and beautiful appearance, fast construction speed, short construction period, environmental protection, small prestress loss and other advantages, small amount of on-site concrete construction, guaranteed construction quality and progress; at the same time, the connecting components can be used as embedded parts to realize a more reliable connection between the track plate and the concrete layer under the plate, effectively reducing the interface debonding and separation between the track plate and the adjustment layer. 4. The concrete layer under the plate of the present invention realizes the functions of supporting, leveling, adjusting the linear shape of the track structure and longitudinal and transverse limiting, effectively improving the overall stability of the track structure, and realizing the optimization and improvement of the self-compacting concrete pouring process, that is, the first boss and the plug-in slot are coupled to limit the lateral movement of the track plate, and the second boss and the through hole are coupled to further limit the longitudinal and transverse movement of the track plate, thereby improving the overall stability of the track structure. And by forming a whole with the embedded steel bars and the track foundation, the connection between the track foundation and the track structure is effectively enhanced, forming a stable force transmission system from the track surface to the lower foundation of the track structure, further ensuring the overall stability of the track structure. 5. The present invention can play the role of buffering, isolating and protecting the second boss that acts as a limiter by bonding an elastic buffer pad to the surface of the notch; at the same time, a first isolation pad is bonded between any two groups of strip-shaped bosses to buffer the mutual squeezing of the two groups of track veneers during pre-pressure preparation to avoid damage; a second isolation pad is provided between the track plate and the concrete layer under the plate, which can achieve vibration reduction and noise reduction effects between the prefabricated track plate and the concrete layer under the plate.Therefore, compared with the existing assembled track technology, the transverse assembled ballastless track and track construction method provided by the present invention have obvious technical advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 3D schematic diagram of the transverse assembled ballastless track according to an embodiment of the present invention; Figure 2 It is a schematic diagram of the exploded structure of the transverse assembled ballastless track according to an embodiment of the present invention; Figure 3 is a schematic diagram of the three-dimensional structure of a track single plate according to an embodiment of the present invention; Figure 4 is a schematic diagram of the three-dimensional structure of the concrete layer under the slab according to an embodiment of the present invention; Figure 5 1 is a schematic diagram of the three-dimensional structure of the tension lock member according to an embodiment of the present invention; The meanings of the reference numerals are as follows: 1-track foundation, 2-track single plate, 21-notch, 22-strip boss, 23-inner threaded casing, 3-concrete layer under the plate, 31-second boss, 32-plug-in groove, 4-rail support, 51-elastic buffer pad, 52-first isolation pad, 53-second isolation pad, 61-tension lock, 62-threaded steel bar. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in this embodiment to clearly and completely describe the technical solution in this embodiment. The present embodiment described herein is only for illustrative purposes and is not intended to limit the scope of protection of the present invention. Therefore, it should be understood that various modifications and changes can be made to this embodiment without departing from the scope of protection of the present invention. In the description of the present invention, unless otherwise clearly specified and limited, the term "and / or" includes any and all combinations of one or more associated listed items. Unless otherwise specified or explained, the terms "connection", "fixed", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, an electrical connection, or a signal connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Further, in the description of the present invention, it should be understood that the directional words described in the present embodiment are described at the angles shown in the accompanying drawings and should not be understood as limiting the present embodiment. It should also be understood that in the context, when it is mentioned that an element or feature is connected to another element (one or more), it can not only be directly connected to the other (one or more) elements, but also indirectly connected to the other (one or more) elements through an intermediate element.

[0020] Before introducing the technical solution of the present invention, it is necessary to explain the background of the invention: At present, many cities in China have proposed and promoted the application of assembled plate track to solve various shortcomings of cast-in-place reinforced concrete track bed structures. However, it can be seen from the existing assembled track structure that the assembled plate track technology generally has the following technical difficulties: there are a large number of special-shaped plates in the existing assembled plate track structure, and the weight of a single track plate is too large, resulting in low factory production efficiency and inconvenience for the stacking, transportation and on-site assembly of the track plate; and, due to the high flatness requirements of the lower foundation of the assembled plate track, a cast-in-place adjustment layer is often used to adjust the linear shape of the track structure, resulting in a large amount of wet joint concrete pouring on site, although it is an assembled structure, and the construction process is complicated; in addition, due to the existence of the adjustment layer, the track structure has an interface between new and old concrete. After the line has been running for a period of time, the interface debonding and separation between the prefabricated track plate and the adjustment layer are prone to occur, which will have an adverse effect on the stability and comfort of the train operation and the life of the track structure.

[0021] First, see Figures 1 to 5 The exemplary embodiment of the present invention provides a transversely assembled ballastless track, which is arranged on a track foundation 1 and includes: a track plate arranged above the track foundation 1, and a sub-plate concrete layer 3 cast in the gap between the track plate and the track foundation 1. The track plate is formed by two groups of track single plates 2 being assembled horizontally relative to each other, and a notch 21 is provided on one side edge of the track single plate 2, and a strip-shaped boss 22 facing downward is provided at the bottom end of the side edge. When the two groups of track single plates 2 are assembled horizontally relative to each other, the two groups of notches 21 form a through hole, and the two groups of strip-shaped bosses 22 form a first boss. The top of the sub-plate concrete layer 3 is correspondingly provided with a second boss 31 that can be inserted into the through hole, and a plug-in slot 32 that can be inserted into the first boss, that is, the transversely assembled ballastless track can limit the lateral movement of the track plate through the coupling effect of the first boss and the plug-in slot 32, and further limit the longitudinal and lateral movement of the track plate through the coupling effect of the second boss 31 and the through hole, thereby improving the overall stability of the track structure.

[0022] It can be understood that the second boss is a reinforced concrete structure with a concrete grade of C40. It is formed by continuous pouring of a concrete layer 3 under the slab and is connected to the lower track foundation through gate-shaped steel bars to form a whole, further ensuring the overall stability of the structure. As a preferred technical solution, pre-embedded steel bars are provided on the top of the track foundation to form a whole with the track foundation when the concrete layer under the slab is poured, effectively enhancing the connection between the track foundation and the track structure, forming a stable force transmission system from the track surface to the lower foundation of the track structure, further ensuring the overall stability of the track structure, wherein the pre-embedded steel bars are preferably pre-embedded gate-shaped steel bars.

[0023] The overall track structure of the present invention is composed of a track plate and a concrete layer under the plate. The main track components can be standardized and prefabricated in factories. The design and construction method of "breaking the whole into parts" and then "integrating the parts into a whole" is adopted. It can be fully assembled at the construction site or factory, reducing the amount of concrete poured on site and improving the construction quality efficiency. The overall track structure adopts the design of eliminating the base, which can effectively save construction costs. It should be noted that this prefabricated track single plate can adopt ordinary reinforced concrete structure or prestressed reinforced concrete structure as needed. When ordinary reinforced concrete structure is adopted, the concrete grade is C40, and when prestressed reinforced concrete structure is adopted, the concrete grade is C60.

[0024] It should be understood that the track of the present invention is formed by laying a number of track plates composed of two groups of track single plates. It has stronger adaptability to small radius curves and reduces the use of existing special-shaped plates. The track plate units are miniaturized and lightweight, which is more convenient for production, stacking, transportation and on-site assembly. The small modular prefabricated basic plates are easier to replace in the event of damage on site, which effectively reduces the workload of engineering maintenance and improves production efficiency.

[0025] As a preferred technical solution, please refer to Figure 2 , Figure 3 and Figure 5The track plate also includes a connection component, which includes a tension lock 61 with threaded steel bars 62 rotatably connected at both ends, and an internal threaded sleeve 23 is pre-buried in the notch 21. Specifically, the two ends of the tension lock 61 are set as threaded ends, and the threaded steel bars 62 are connected and anchored with the threaded ends of the tension lock 61 through steel washers and nuts. When the two groups of track single plates 2 are assembled horizontally relative to each other, the threaded steel bars 62 at both ends of the tension lock 61 can be correspondingly screwed into the internal threaded sleeve 23 of the notch 21, so that the two groups of track single plates 2 are assembled and connected to form a track plate, without the need for cast-in-place track plates, the amount of on-site concrete construction is small, and the construction quality and progress are guaranteed. By rotating the threaded steel bar 62, adjusting its length in the tension lock 61 to achieve pre-pressure connection of the left and right track single plates 2, the connection relationship is reliable, the degree of factory and mechanized operation is high, and the track plate formed after connection has a neat and beautiful appearance, and has the advantages of fast construction speed, short construction period, and environmental protection. In addition, when pouring the concrete layer 3 under the slab, the connecting component is integrated with the second boss 31 as an embedded part, that is, the connecting component can be used as an embedded part to achieve a more secure connection between the track slab and the concrete layer 3 under the slab, effectively reducing the interface debonding and separation between the track slab and the adjustment layer.

[0026] In some embodiments, see Figure 3 , the side edge of the track single plate 2 is evenly provided with a plurality of groups of notches 21, and the bottom of the side edge is provided with a strip-shaped boss 22 facing downward except for the notches 21. Such a design is adopted to increase the limiting relationship structure between the track plate and the concrete layer 3 under the plate, that is, a track plate includes a plurality of groups of first bosses and a plurality of groups of notches 21, so as to couple with the plug-in grooves 32 and the second bosses 31 of the concrete layer 3 under the plate to strengthen the limiting effect. As a preferred technical solution, the notch 21 is a rectangular notch 21 and is provided with a chamfer, so that a second boss 31 with a columnar shape and a chamfer can be cast later. This structure reduces the stress concentration of the second boss 31 during the track operation stage to avoid damage to the second boss 31.

[0027] See also Figure 2 As a preferred technical solution, elastic buffer pads 51 are bonded between the plug-in slot 32 and the first boss, and between the through hole and the second boss 31. The purpose of adopting such a design is that, by setting the elastic buffer pads 51, the first boss and the second boss 31 can be buffered, isolated and protected. Among them, the elastic buffer pads 51 are sealed with sealant to prevent rainwater from entering the track structure. As a preferred technical solution, when the two groups of the track slabs 2 are horizontally assembled relative to each other, a first isolation pad 52 is bonded between any two groups of the strip-shaped bosses 22, which can buffer the mutual squeezing of the two groups of track slabs 2 during pre-stress preparation to avoid damage. As a preferred technical solution, a third isolation pad 53 is provided between the track plate and the concrete layer 3 under the plate, which can achieve vibration reduction and noise reduction effects between the prefabricated track plate and the concrete layer 3 under the plate.

[0028] Since the tracks in urban rail transit often use direct current, which is prone to direct current leakage and electrochemical corrosion, in order to meet the insulation performance requirements of urban rail transit, it is preferred to use a track plate structure with a rail support platform. Figure 1 As shown, eight pairs of rail support platforms 4 are evenly arranged on the top of the track plate 2 of the present invention.

[0029] In addition, as a preferred technical solution, a plate gap is left between two adjacent groups of track plates to provide installation space for the installation of components such as grounding terminals and rail-crossing pipelines. Specifically, the overall track structure is connected by a number of track plates, and a plate gap is left between adjacent track plates. The grounding terminal is set at the plate gap position of the adjacent track plates, and a grounding terminal is set on the left and right sides of each plate gap; at the same time, the rail-crossing pipeline of the urban rail transit can pass through this plate gap position to pass the track; in addition, the drainage of the track system can be drained longitudinally through the plate gaps on both sides of the track plate.

[0030] In a second aspect, based on the above-mentioned transverse assembled ballastless track, the present invention further provides a track construction method, comprising the following steps: Step 1, prefabricated board: prefabricate the track veneer in the factory, open a notch on one side edge of the track veneer, set a downward strip boss at the bottom of the side edge, and embed an internal threaded sleeve in the notch. It should be noted that multiple groups of notches can be evenly opened on one side edge of the track veneer, and multiple groups of internal threaded sleeves can be embedded in a single notch, and the embedded depth of the internal threaded sleeve is preferably 150mm-200mm.

[0031] Step 2, surface treatment: bonding an elastic buffer pad to the surface of the notch, bonding a first isolation pad to the surface of the strip boss, and bonding a second isolation pad to the bottom of the track veneer. It should be understood that the second isolation pad is provided with a number of boss notches to avoid interference with casting and forming the second boss.

[0032] Step 3: Track foundation construction: Install the track foundation mold and embed steel bars to cast the track foundation. The purpose of embedding steel bars is to form a whole with the track foundation when the concrete layer under the slab is subsequently cast, effectively strengthening the connection between the track foundation and the track structure, and further ensuring the overall stability of the track structure.

[0033] Step 4: Laying the track slabs: Assemble the two sets of track slabs horizontally relative to each other, position and roughly lay them, connect the two sets of track slabs through connecting components to form a track slab as a whole, and apply pre-pressure to the two sets of track slabs.

[0034] Step 5, construction of the concrete layer under the slab: install the mold of the middle concrete layer, and pour the self-compacting concrete through a through hole to form the concrete layer under the slab. A second boss inserted into the through hole and a plug-in slot for the first boss to be inserted are formed on the top of the concrete layer under the slab, that is, the transverse assembled ballastless track can limit the lateral movement of the track plate through the coupling effect of the first boss and the plug-in slot, and further limit the longitudinal and lateral movement of the track plate through the coupling effect of the second boss and the through hole, thereby improving the overall stability of the track structure.

[0035] It should be noted that this track structure cancels the base plate design, and a sub-slab concrete layer is poured under the overall track structure after the two track plates are assembled. The sub-slab concrete layer is directly connected to the track foundation through the embedded steel bars in step 3, which plays a role in leveling and adjusting the linear shape of the track structure. Among them, when pouring the sub-slab concrete layer, a through hole of the track plate is used for pouring, and the remaining through holes are used as vents and observation holes during pouring construction, which optimizes the pouring construction process of the middle concrete layer. Preferably, the second boss is at the same height as the through hole, so that the second boss structure is exposed and clearly visible, which improves the intuitiveness and operability of maintenance and monitoring, and is conducive to timely and effective maintenance by the engineering department.

[0036] Step 6, track structure construction: install rail supports on both sides of the top of the track plate, fix the rails on the rail supports with fasteners, and re-measure the track structure line shape. Since the tracks in urban rail transit often use direct current, it is easy to cause direct current leakage and electrochemical corrosion. In order to meet the insulation performance requirements of urban rail transit, in some embodiments, a track plate structure with rail supports is adopted; eight pairs of rail supports are arranged on a single track plate, and the fasteners use the fastener type that matches the track plate.

[0037] In summary, the assembled ballastless track and track construction method of the present invention have the following technical advantages: 1. The overall track structure of the present invention is composed of a track plate and a concrete layer under the plate. The main components of the track can be standardized and prefabricated in a factory. The design and construction method of "breaking the whole into parts" and then "integrating the parts into a whole" is adopted. It can be fully assembled at the construction site or in the factory, reducing the amount of concrete poured on site and improving the construction quality efficiency. In addition, the overall track structure adopts a design that eliminates the base, which can effectively save construction costs.

[0038] 2. The track plate of the present invention is a factory prefabricated structure. The track plate unit is miniaturized and lightweight, which is more convenient for production, stacking, transportation and on-site assembly. The small modular prefabricated basic plate is easier to replace in the event of damage on site, which effectively reduces the workload of engineering maintenance and improves production efficiency.

[0039] 3. The track plate of the present invention is assembled and installed using connecting components, which have reliable connection, high degree of factory and mechanized operation, neat and beautiful appearance, fast construction speed, short construction period, environmental protection, small prestress loss and other advantages. The on-site concrete construction volume is small, and the construction quality and progress are guaranteed. At the same time, the connecting components can be used as embedded parts to achieve a more reliable connection between the track plate and the concrete layer under the plate, effectively reducing the interface debonding and separation between the track plate and the adjustment layer.

[0040] 4. The concrete layer under the plate of the present invention can support, level, adjust the linear shape of the track structure and limit the vertical and horizontal positions, effectively improving the overall stability of the track structure and optimizing the self-compacting concrete pouring process. That is, the first boss is coupled with the plug-in slot to limit the lateral movement of the track plate, and the second boss is coupled with the through hole to further limit the vertical and horizontal movement of the track plate, thereby improving the overall stability of the track structure. The pre-embedded steel bars are integrated with the track foundation to effectively enhance the connection between the track foundation and the track structure, forming a stable force transmission system from the track surface to the lower foundation of the track structure, further ensuring the overall stability of the track structure. 5. The present invention can play the role of buffering, isolating and protecting the second boss that acts as a limiter by bonding an elastic buffer pad to the surface of the notch; at the same time, a first isolation pad is bonded between any two groups of strip-shaped bosses to buffer the mutual squeezing of the two groups of track veneers during pre-pressure preparation to avoid damage; a second isolation pad is provided between the track plate and the concrete layer under the plate, which can achieve vibration reduction and noise reduction effects between the prefabricated track plate and the concrete layer under the plate.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A transverse assembled ballastless track, arranged on a track foundation, characterized in that: include: A track plate is arranged above the track foundation and is formed by assembling two sets of track plates in a transverse direction. A sub-slab concrete layer is poured in the gap between the track slab and the track foundation; A notch is provided on one side edge of the track single plate, and a strip-shaped boss facing downward is provided at the bottom end of the side edge. When two groups of track single plates are assembled horizontally relative to each other, the two groups of notches form through holes, and the two groups of strip-shaped bosses form a first boss. A second boss capable of being inserted into the through hole and a plug-in slot capable of being inserted into the first boss are correspondingly provided on the top of the concrete layer under the slab.

2. The transverse assembled ballastless track according to claim 1, characterized in that: The track plate also includes a connecting component, which includes a tensioning lock with threaded steel bars rotatably connected at both ends, and an internal threaded sleeve is embedded in the notch. When two groups of the track veneers are assembled horizontally relative to each other, the threaded steel bars at both ends of the tensioning lock can be correspondingly screwed into the internal threaded sleeve of the notch, so that the two groups of the track veneers are assembled and connected; wherein, when the concrete layer under the slab is poured, the connecting component is integrated with the second boss as an embedded part.

3. The transverse assembled ballastless track according to claim 2, characterized in that: The side edge of the track single plate is evenly provided with a plurality of notches, and the bottom end of the side edge except the notches is provided with a strip-shaped boss facing downwards.

4. The transverse assembled ballastless track according to claim 3, characterized in that: The notch is a rectangular notch and is provided with chamfers.

5. The transverse assembled ballastless track according to claim 4, characterized in that: Elastic buffer pads are bonded between the inserting groove and the first boss, and between the through hole and the second boss.

6. The transverse assembled ballastless track according to claim 5, characterized in that: When two groups of the track single plates are assembled laterally relative to each other, a first isolation pad is bonded between any two groups of the strip-shaped bosses.

7. The transverse assembled ballastless track according to claim 6, characterized in that: A second isolation pad is provided between the track slab and the concrete layer under the slab.

8. The transverse assembled ballastless track according to claim 7, characterized in that: Steel bars are pre-embedded on the top of the track foundation so that the concrete layer under the slab forms a whole with the track foundation when poured.

9. The transverse assembled ballastless track according to claim 8, characterized in that: A plate gap is left between two adjacent groups of track plates in the assembled ballastless track to provide installation space for the arrangement of other components such as grounding terminals and track crossing pipelines.

10. A track construction method, characterized in that: The transverse assembled ballastless track according to any one of claims 1 to 9 is characterized in that it includes the following steps: Prefabricated plate: The track veneer is prefabricated in the factory, a notch is opened on one side edge of the track veneer, a downward strip boss is set at the bottom end of the side edge, and an internal threaded sleeve is embedded in the notch; Surface treatment: bonding an elastic buffer pad to the surface of the notch, bonding a first isolation pad to the surface of the strip boss, and bonding a second isolation pad to the bottom of the track veneer; Track foundation construction: install the track foundation mold and embed the steel bars to cast the track foundation; Laying track slabs: assemble two sets of track veneers horizontally relative to each other, position and roughly lay them, connect the two sets of track veneers through connecting components to form a track slab as a whole, and apply pre-pressure to the two sets of track veneers; Construction of the concrete layer under the slab: Install the intermediate concrete layer mold and pour the self-compacting concrete through a through hole to form the concrete layer under the slab; Track structure construction: Install rail supports on both sides of the top of the track slab, fix the rails on the rail supports with fasteners, and remeasure the track structure line shape.

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