Ballastless track bed plate rebuilding construction transition structure and construction method

Abstract

The present application relates to the field of railway construction technology, and more particularly to a ballastless track bed plate rebuilding construction transition structure and a construction method, a plurality of wooden sleepers are arranged in parallel at equal intervals along the track extension direction, and the lower part of both ends of each wooden sleeper is connected with a sleeper block; a filling bag is arranged between the sleeper block and the bed plate rebuilding base surface, and the filling bag is filled with a filler, so that the load borne by the sleeper block is downwardly applied to the bed plate rebuilding base surface through the filling bag. The overall transition structure is composed of the wooden sleeper, the sleeper block and the filling bag, and can meet the transition operation use of the operating line by simply installing and connecting, and no fixed pouring structure is formed on the bed plate rebuilding base surface, and only simple removal is needed when the bed plate rebuilding is performed in the later period, thereby saving the ballast track bed plate rebuilding construction time of the operating line.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of railway construction technology, and in particular to a transition structure for rebuilding a ballastless track bed slab and a construction method. BACKGROUND

[0002] Ballastless track is a track structure that uses concrete, asphalt mixture, etc. to replace the granular ballast bed. Ballastless track uses a rigidly bonded hardening material as a bed slab, which significantly improves the load transfer and diffusion function of the system.

[0003] During long-term use of the ballastless track, the bed slab is easily damaged due to high-frequency impact of large loads, so it needs to be replaced in time. During the removal and rebuilding of the ballastless bed, a wooden sleeper is generally used for temporary transition.

[0004] In the existing process of removing and rebuilding the ballastless bed, fast-hardening polymer concrete is poured under the wooden sleeper for leveling. The wooden sleeper is fixed and limited by angle steel in the transverse direction, and the angle steel is reinforced by M24 chemical bolts. The wooden sleeper is fixed and limited by angle steel in the longitudinal direction, and the angle steel is reinforced by M24 chemical bolts. Since the original bed slab is removed, the surface is uneven. After the wooden sleeper is installed, the surrounding formwork is difficult to seal, which easily leads to leakage and makes it difficult to pour and level. In addition, the fast-hardening polymer concrete poured under the wooden sleeper needs to be removed when rebuilding the new bed slab, which increases the workload of the rebuilding construction and prolongs the construction period. SUMMARY

[0005] The present application provides a transition structure for rebuilding a ballastless track bed slab and a construction method to solve the problem of uneven leveling of fast-hardening polymer concrete poured under the wooden sleeper during the process of removing and rebuilding the ballastless track bed slab, and to reduce the workload of the rebuilding construction.

[0006] The present application provides a transition structure for rebuilding a ballastless track bed slab, which includes a wooden sleeper, a sleeper block, and a filling bag. A plurality of wooden sleepers are arranged in parallel at equal intervals along the extension direction of the track and are connected to the bottom of two rails. A sleeper block is connected to the lower part of each end of the wooden sleeper. The filling bag is arranged between the sleeper block and the rebuilding base surface of the bed slab, and the filling bag is filled with a filler to enable the load on the sleeper block to act downward on the rebuilding base surface of the bed slab through the filling bag.

[0007] According to the present application, a transition structure for ballastless track bed plate reconstruction construction is provided, the sleeper block and the sleeper are fastened together by a U-shaped hoop, each sleeper block and one end of the sleeper are fastened by two U-shaped hoops, and the two U-shaped hoops are symmetrically arranged on both sides of a steel rail.

[0008] According to the present application, a transition structure for ballastless track bed plate reconstruction construction is provided, the U-shaped hoop comprises bolt connecting components arranged on both sides of the sleeper block, the bottom ends of the two bolt connecting components are connected by a connecting piece to form a U-shaped structure, and the connecting piece is arranged on the lower surface of the sleeper block; the top ends of the two bolt connecting components are connected by a clamping piece arranged on the upper surface of the sleeper, and the clamping piece is detachably connected with the bolt connecting components to form a structure matched with the U-shaped structure to fasten the sleeper block and the sleeper.

[0009] According to the present application, a transition structure for ballastless track bed plate reconstruction construction is provided, the same side ends of a plurality of sleepers are connected by channel steel pieces to form a limiting and reinforcing structure along the extension direction of the track.

[0010] According to the present application, a transition structure for ballastless track bed plate reconstruction construction is provided, the same side ends of a plurality of sleepers are connected by channel steel pieces to form a limiting and reinforcing structure along the extension direction of the track.

[0011] According to the present application, a transition structure for ballastless track bed plate reconstruction construction is provided, the same side ends of a plurality of sleepers are connected by channel steel pieces to form a limiting and reinforcing structure along the extension direction of the track.

[0012] According to the present application, a transition structure for ballastless track bed plate reconstruction construction is provided, the same side ends of a plurality of sleepers are connected by channel steel pieces to form a limiting and reinforcing structure along the extension direction of the track.

[0013] According to the application, a transition structure for ballastless track bed plate reconstruction construction is provided, wherein vertical long holes are arranged on the vertical plate, the end of the sleeper block is provided with a protruding bolt, the protruding bolt penetrates through the side of the sleeper head sleeve box and the long hole, and a fastening nut is sleeved on the protruding bolt to connect the vertical plate to the side of the sleeper head sleeve box through the fastening nut and the protruding bolt.

[0014] The application further provides a construction method of the transition structure for ballastless track bed plate reconstruction construction, comprising steps S1-S3.

[0015] S1, the ballastless track construction section bed plate is removed, and a plurality of sleepers are arranged in parallel at equal intervals under the track in the track extension direction as a temporary transition.

[0016] S2, a sleeper block is installed below each end of the sleeper.

[0017] S3, a filling bag is filled below the sleeper block, and the space below the sleeper block is filled by injecting polymer mortar or low-viscosity resin into the filling bag, so that the track load acts downward on the bed plate reconstruction base surface through the sleeper, the sleeper block and the filling bag in turn.

[0018] The construction method of the transition structure for ballastless track bed plate reconstruction construction according to the application further comprises steps S4 and S5.

[0019] S4, a sleeper head sleeve box is wrapped around the end of the sleeper and the end of the sleeper block, the side of the sleeper head sleeve box away from the steel rail is connected with a limiting component, and the limiting component is fixed to the bed plate reconstruction base surface through a bolt fastener to form lateral limiting reinforcement of the sleeper.

[0020] S5, a channel steel piece is arranged at the same side end of a plurality of sleepers, and each sleeper and the sleeper block are clamped through a U-shaped hoop and the channel steel piece to form limiting reinforcement of the plurality of sleepers in the track extension direction.

[0021] The transition structure for ballastless track bed plate reconstruction construction and the construction method provided by the application can be used in the process of ballastless track bed plate reconstruction construction of the operating line, and are a quick connection structure. A sleeper block is arranged below each end of the sleeper, a filling bag is filled below the sleeper block, and the space below the sleeper block is filled by injecting polymer mortar or low-viscosity resin into the bag to ensure the downward transmission of the track load to the bed plate reconstruction base surface. The overall transition structure is composed of the sleeper, the sleeper block and the filling bag, and can meet the transition operation of the operating line by simple installation and connection. Moreover, no fixed pouring structure is formed on the bed plate reconstruction base surface, and only simple removal is needed during the bed plate reconstruction in the later period, thereby saving the construction time of the ballastless track bed plate reconstruction of the operating line. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a front view schematic diagram of the transition structure for the reconstruction of ballastless track slabs provided by the present invention.

[0024] Figure 2 This is a top view schematic diagram of the transition structure for the reconstruction of ballastless track slabs provided by the present invention.

[0025] Figure 3 This is a side view schematic diagram of the transition structure for the reconstruction of ballastless track slabs provided by the present invention.

[0026] Reference numerals: 1. Wooden sleeper; 2. Sleeper block; 3. Filling bag; 4. U-shaped clamp; 5. Channel steel component; 6. Wooden sleeper cover box; 7. Limiting component; 71. Vertical plate; 72. Horizontal plate; 73. Rib plate; 74. Long strip hole. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0028] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and 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 embodiments of the present invention.

[0029] In the description of the embodiments of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "connected", "connected to", "connection" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral connection, can be direct connection, or indirect connection through intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0030] In the embodiments of the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0031] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0032] The following will be described in conjunction with Figures 1 to 3 The present application describes a transition structure and construction method for rebuilding the bed plate of a ballastless track.

[0033] One embodiment of the present application provides a transition structure for rebuilding the bed plate of a ballastless track, which combines Figure 1 and Figure 2 As shown, it comprises wooden sleepers 1, sleeper blocks 2 and filling bags 3, wherein a plurality of wooden sleepers 1 are arranged in parallel at equal intervals along the extension direction of the track, and the wooden sleepers 1 are connected below two rails; one sleeper block 2 is connected to the lower part of each end of the wooden sleeper 1; the filling bag 3 is arranged between the sleeper block 2 and the rebuilding base surface of the bed plate, and the filling bag 3 is filled with filling material, so that the load on the sleeper block 2 is applied downward to the rebuilding base surface of the bed plate through the filling bag 3.

[0034] It can be understood that the transition structure for rebuilding the ballastless track bed plate in the embodiment can be used in the process of rebuilding the ballastless track bed plate on the operating line. After the original track bed plate is removed, the wood sleeper 1 is used for temporary transition. Since the original track bed plate is removed, the surface of the track bed plate rebuilding base is uneven. If the conventional pouring formwork is used, it is difficult to seal the plate periphery, which is prone to cause slurry leakage and is not easy to pour and level. Moreover, the fast-hardening polymer concrete needs to be removed when the new track bed plate is rebuilt, which increases the workload of the rebuilding construction. The transition structure for rebuilding the ballastless track bed plate in the embodiment is a modular fast connection structure. An 800mm sleeper block 2 is arranged below each end of the wood sleeper 1. The sleeper block 2 is filled with a filling bag 3. The space below the sleeper block 2 is filled with polymer mortar or low-viscosity resin injected into the bag to ensure that the track load is transmitted downward to the track bed plate rebuilding base. The overall transition structure is composed of the wood sleeper 1, the sleeper block 2 and the filling bag 3. The transition structure can meet the requirements of the transition operation of the operating line by simple installation and connection. Moreover, no fixed pouring structure is formed on the track bed plate rebuilding base. When the track bed plate is rebuilt later, only simple removal is needed, which saves the time for rebuilding the ballastless track bed plate on the operating line.

[0035] In some embodiments of the transition structure for rebuilding the ballastless track bed plate, the sleeper block 2 and the wood sleeper 1 are tightly connected by the U-shaped hoop 4. Each sleeper block 2 and the end of the wood sleeper 1 are tightly connected by two U-shaped hoops 4, and the two U-shaped hoops 4 are symmetrically arranged on both sides of a rail. It can be understood that the sleeper block 2 and the wood sleeper 1 are tightly connected by the U-shaped hoop 4. Each wood sleeper 1 is tightly connected with two sleeper blocks 2 by four U-shaped hoops 4 (each end of the wood sleeper 1 is tightly connected with one sleeper block 2 by two U-shaped hoops 4), which can ensure the stability of the transition structure and facilitate the transition use during the rebuilding of the track bed plate on the operating line.

[0036] Specifically, the U-shaped hoop 4 includes bolt connection assemblies arranged on both sides of the sleeper block 2. The bottom ends of the two bolt connection assemblies are connected by a connecting piece to form a U-shaped structure, and the connecting piece is arranged on the lower surface of the sleeper block 2. The top ends of the two bolt connection assemblies are connected by a clamping piece, and the clamping piece is arranged on the upper surface of the wood sleeper 1. The clamping piece and the bolt connection assembly are detachably connected to form a U-shaped structure to tightly connect the sleeper block 2 and the wood sleeper 1. It can be understood that in this example, the U-shaped hoop 4 is composed of the U-shaped structure formed by the two bolt connection assemblies and the connecting piece and the clamping piece. The sleeper block 2 and the wood sleeper 1 are arranged in the U-shaped structure, and the clamping piece is arranged on the upper surface of the wood sleeper 1. The U-shaped structure and the clamping piece are detachably connected and fastened to tightly connect the sleeper block 2 and the wood sleeper 1.

[0037] Based on the transition structure of the ballastless track bed plate reconstruction construction in the above embodiments, after the installation of the transition structure is completed, the transition structure can be reinforced. In some embodiments of the transition structure of the ballastless track bed plate reconstruction construction, the same side end of the plurality of wooden sleepers 1 is connected by the channel steel 5 to form the limiting reinforcement of the plurality of wooden sleepers 1 along the track extension direction. The channel steel 5 adopts a full-length channel steel, and the plurality of wooden sleepers 1 along the track extension direction are connected by the channel steel 5, and the plurality of wooden sleepers 1 are integrated to realize the limiting reinforcement of the plurality of wooden sleepers 1 along the track extension direction.

[0038] Specifically, in some examples, referring to Figure 2 As shown, the same side end of the plurality of wooden sleepers 1 is provided with two channel steels 5 in parallel, and the two channel steels 5 are located on both sides of a steel rail. The channel steel 5 is configured as a clamping piece of the U-shaped clamp 4, and the two U-shaped clamps 4 at the same end of the wooden sleeper 1 are connected by a transverse connecting piece. In this example, the channel steel 5 not only serves as a connecting piece of the plurality of wooden sleepers 1, but also serves as a clamping piece of the U-shaped clamp 4. The four channel steels 5 are arranged in parallel along the track extension direction, and one channel steel 5 is arranged on each side of each steel rail. When the channel steel 5 intersects with one wooden sleeper 1 along the track extension direction, the channel steel 5 is connected with the U-shaped structure of the U-shaped clamp 4 on the wooden sleeper 1, thereby forming the clamping of the single wooden sleeper 1 and the sleeper block 2, and forming the limiting reinforcement of the plurality of wooden sleepers 1 along the track extension direction.

[0039] In addition to the limiting reinforcement of the plurality of wooden sleepers 1 along the track extension direction, each wooden sleeper 1 can also be transversely reinforced. In another embodiment of the transition structure of the ballastless track bed plate reconstruction construction, the two ends of the wooden sleeper 1 are sleeved in the wooden sleeper head sleeve box 6, the wooden sleeper head sleeve box 6 covers the end of the wooden sleeper 1 and the end of the sleeper block 2, and the side of the wooden sleeper head sleeve box 6 away from the steel rail is connected with the limiting assembly 7. The limiting assembly 7 is fixed to the bed plate reconstruction base surface by a bolt fastener. The two wooden sleeper head sleeve boxes 6 at the two ends of the wooden sleeper 1 and the limiting assembly 7 form transverse limiting reinforcement of the wooden sleeper 1.

[0040] It can be understood that in the transition structure of the ballastless track bed plate reconstruction construction in this embodiment, the wooden sleeper head sleeve box 6 is arranged at the two ends of each wooden sleeper 1, and the wooden sleeper head sleeve box 6 is connected with the limiting assembly 7 to form an integrated structure, which is fixed to the bed plate reconstruction base surface by a bolt fastener. The combination of the wooden sleeper head sleeve box 6 and the limiting assembly 7 at the two ends of the wooden sleeper 1 forms transverse limiting of the wooden sleeper 1 between the two combination structures, thereby preventing the wooden sleeper 1 from moving transversely.

[0041] Specifically, in some examples, referring to Figure 1As shown, the limiting component 7 includes a vertical plate 71, a horizontal plate 72 and a rib plate 73, the vertical plate 71 is connected with the side of the wooden sleeper sleeve box 6, the horizontal plate 72 is vertically connected with the bottom end of the vertical plate 71, the horizontal plate 72 is fixed on the track bed plate rebuilding base by a bolt fastener, and the rib plate 73 connects the vertical plate 71 and the horizontal plate 72. It can be understood that the horizontal plate 72 of the limiting component 7 is fixed on the track bed plate rebuilding base by a bolt fastener to form a limiting base, the vertical plate 71 of the limiting component 7 is connected with the wooden sleeper sleeve box 6 to exert the limiting function on the wooden sleeper sleeve box 6, and the rib plate 73 of the limiting component 7 is arranged along the direction in which the wooden sleeper 1 may move transversely to strengthen the transverse limiting strength, and finally ensure the transverse limiting reinforcement of the wooden sleeper 1.

[0042] Further, referring to Figure 3 As shown, the vertical plate 71 is provided with a vertical long hole 74, the end of the sleeper block 2 is provided with a protruding bolt, the protruding bolt passes through the side of the wooden sleeper sleeve box 6 and the long hole 74, and a fastening nut is sleeved on the protruding bolt to connect the vertical plate 71 with the side of the wooden sleeper sleeve box 6 through the fastening nut and the protruding bolt. It can be understood that the vertical plate 71 in the example is provided with the long hole 74, and when the limiting component 7 is connected and installed, the vertical height of the limiting component 7 can be adjusted by adjusting the position of the fastening nut in the long hole 74. Since the original track bed plate is removed, the track bed plate rebuilding base is uneven, that is, the height of the wooden sleeper sleeve box 6 from the track bed plate rebuilding base may be different, and the height adjustment of the limiting component 7 is realized through the long hole 74 in the example, so that the limiting component 7 can be connected and installed on the uneven position of the track bed plate rebuilding base.

[0043] The construction method of the transition structure for track bed plate rebuilding construction of the ballastless track provided by the present application will be described below, and the construction method of the transition structure for track bed plate rebuilding construction of the ballastless track described below can be correspondingly referred to the transition structure for track bed plate rebuilding construction of the ballastless track described above.

[0044] One embodiment of the present application provides a construction method of a transition structure for track bed plate rebuilding construction of a ballastless track, which includes steps S1-S3.

[0045] Step S1, installing wooden sleepers 1: removing the track bed plate of the ballastless track construction section, and arranging a plurality of wooden sleepers 1 in parallel at equal intervals under the track along the track extension direction as a temporary transition.

[0046] It can be understood that after the track bed plate of the ballastless track is removed, the wooden sleepers 1 are used for transition without removing the steel rails. The wooden sleeper 1 transition construction is always accompanied by the removal of the sleepers, and after removing one track bed plate 6.25 meters (ten sleeper blocks), the temporary wooden sleeper 1 transition construction is installed.

[0047] Step S2, installing sleeper block 2: installing sleeper block 2 below each wooden sleeper 1. After the installation of the field wooden sleepers 1 at a spacing of 0.625 m is completed, installing 800 mm sleeper block 2 at both ends of the wooden sleeper 1, and the sleeper block 2 is connected and fixed with the wooden sleeper 1 by two U-shaped hoops 4.

[0048] Step S3, installing filling bag 3: filling filling bag 3 below the sleeper block 2, and filling the space below the sleeper block 2 by injecting polymer mortar or low-viscosity resin into the filling bag 3, so that the track load acts on the track bed slab reconstruction base surface in turn through the wooden sleeper 1, the sleeper block 2 and the filling bag 3.

[0049] Further, the construction method of the transition structure for track bed slab reconstruction of the ballastless track further comprises steps S4 and S5, which are further reinforcing the transition structure after the installation of the overall structure of the transition structure, wherein step S4 is used to form lateral limiting reinforcement for the wooden sleeper 1, and step S5 is used to form limiting reinforcement for the wooden sleepers 1 along the track extension direction.

[0050] Step S4: wrapping wooden sleeper head cover box 6 at the end of the wooden sleeper 1 and the end of the sleeper block 2, connecting limiting assembly 7 on the side of the wooden sleeper head cover box 6 away from the steel rail, and fixing limiting assembly 7 on the track bed slab reconstruction base surface by bolt fasteners to form lateral limiting reinforcement for the wooden sleeper 1.

[0051] Step S5, placing channel steel 5 at the same side end of the wooden sleepers 1; connecting and clamping each wooden sleeper 1 and sleeper block 2 by U-shaped hoop 4 and channel steel 5 to form limiting reinforcement for the wooden sleepers 1 along the track extension direction.

[0052] The construction method of the transition structure for track bed slab reconstruction is used for transition construction during the process of track bed slab reconstruction of the operating line, and the wooden sleeper 1, the sleeper block 2 and the filling bag 3 form a modular transition structure, and the transition structure is reinforced, which not only ensures the safety of the operating line construction, but also ensures that the reinforcement is completed within a window, thereby saving the construction time of the operating line.

[0053] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A transition structure for the reconstruction of ballastless track slabs, characterized in that, include: Wooden sleepers (1), a plurality of said wooden sleepers (1) are arranged in parallel at equal intervals along the track extension direction, said wooden sleepers (1) are connected to the underside of two steel rails; Sleeper blocks (2), with one sleeper block (2) connected to the lower part of each end of the wooden sleeper (1); A filling bag (3) is placed between the sleeper block (2) and the track bed slab reconstruction base surface. The filling bag (3) is filled with filler material so that the load on the sleeper block (2) is applied downward to the track bed slab reconstruction base surface through the filling bag (3). The sleeper block (2) and the wooden sleeper (1) are fastened together by U-shaped clamps (4). Each sleeper block (2) and one end of the wooden sleeper (1) are fastened together by two U-shaped clamps (4). The two U-shaped clamps (4) are symmetrically arranged on both sides of a rail. The U-shaped clamp (4) includes bolt connection components located on both sides of the sleeper block (2). The bottom ends of the two bolt connection components are connected by a connector to form a U-shaped structure. The connector is located on the lower surface of the sleeper block (2). The top ends of the two bolt connection components are connected by a snap-fit ​​connector. The snap-fit ​​connector is located on the upper surface of the wooden sleeper (1). The snap-fit ​​connector is detachably connected to the bolt connection components to form a U-shaped structure that can clamp the sleeper block (2) and the wooden sleeper (1). The ends of multiple wooden sleepers (1) on the same side are connected by channel steel pieces (5) to form a limiting reinforcement of multiple wooden sleepers (1) along the track extension direction; Two channel steel pieces (5) are arranged in parallel on the same side end of multiple wooden sleepers (1). The two channel steel pieces (5) are located on both sides of a rail. The channel steel pieces (5) are constructed as snap-fit ​​pieces of the U-shaped clamps (4). The two U-shaped clamps (4) located at the same end of the wooden sleepers (1) are connected by a transverse connector.

2. The transition structure for the reconstruction of ballastless track slabs according to claim 1, characterized in that, Both ends of the wooden sleeper (1) are fitted into wooden sleeper boxes (6). The wooden sleeper boxes (6) cover the ends of the wooden sleeper (1) and the ends of the sleeper blocks (2). The side of the wooden sleeper box (6) away from the rail is connected to a limiting component (7). The limiting component (7) is fixed to the track bed slab reconstruction base surface by bolt fasteners. The two wooden sleeper boxes (6) at both ends of the wooden sleeper (1) and the limiting component (7) form a lateral limiting reinforcement for the wooden sleeper (1).

3. The transition structure for the reconstruction of ballastless track slabs according to claim 2, characterized in that, The limiting component (7) includes a vertical plate (71), a horizontal plate (72), and a rib plate (73). The vertical plate (71) is attached to the side of the wooden pillow box (6). The horizontal plate (72) is vertically connected to the bottom of the vertical plate (71). The horizontal plate (72) is fixed to the track bed slab reconstruction base surface by bolt fasteners. The rib plate (73) connects the vertical plate (71) and the horizontal plate (72).

4. The transition structure for the reconstruction of ballastless track slabs according to claim 3, characterized in that, The vertical plate (71) is provided with a vertical elongated hole (74), and the end of the sleeper block (2) is provided with a protruding bolt. The protruding bolt passes through the side of the wooden pillowcase (6) and the elongated hole (74). A fastening nut is fitted on the protruding bolt so that the vertical plate (71) is connected to the side of the wooden pillowcase (6) through the fastening nut and the protruding bolt.

5. A construction method for a transition structure during the reconstruction of ballastless track slabs, characterized in that, The method applicable to the construction of the transition structure for the reconstruction of ballastless track slab as described in any one of claims 1 to 4, wherein the construction method for the transition structure for the reconstruction of ballastless track slab includes: S1. Remove the track bed slab of the ballastless track construction section and arrange multiple wooden sleepers (1) at equal intervals under the track as a temporary transition along the track extension direction. S2. Install sleeper blocks (2) below both ends of each of the wooden sleepers (1); S3. Fill the space below the sleeper (2) with a filling bag (3) and fill the space below the sleeper (2) by injecting polymer mortar or low viscosity resin into the filling bag (3) so that the track load passes through the sleeper (1), the sleeper (2) and the filling bag (3) in sequence and acts downward on the track bed slab reconstruction base surface.

6. The construction method for the transition structure of the ballastless track bed slab reconstruction according to claim 5, characterized in that, Also includes: S4. Cover the ends of the wooden sleeper (1) and the ends of the sleeper block (2) with a wooden sleeper box (6). Connect the limiting component (7) to the side of the wooden sleeper box (6) away from the rail. Fix the limiting component (7) to the track bed slab reconstruction base surface with bolt fasteners to form a lateral limiting reinforcement for the wooden sleeper (1). S5. Place a channel steel piece (5) on the same side end of the multiple wooden sleepers (1); connect and tighten each wooden sleeper (1) and the sleeper block (2) with a U-shaped clamp (4) and the channel steel piece (5) to form a limiting reinforcement of the multiple wooden sleepers (1) along the track extension direction.

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