Ballastless track roadbed slab rebuilding construction transition structure and construction method

Abstract

The invention relates to the technical field of railway construction, in particular to a ballastless track roadbed slab rebuilding construction transition structure and a construction method, a plurality of wooden sleepers are arranged in parallel at equal intervals in the extending direction of a track, and the lower portions of the two ends of each wooden sleeper are connected with sleeper blocks; the filling bag is arranged between the sleeper block and the roadbed slab rebuilding base plane, and the filling bag is filled with filler, so that the load borne by the sleeper block downwards acts on the roadbed slab rebuilding base plane through the filling bag. The overall transition structure is composed of the wooden sleepers, the sleeper blocks and the filling bags, transition operation and use of a business line can be met through simple installation and connection, a fixed pouring structure is not formed on the roadbed slab rebuilding base face, and when roadbed slab rebuilding is conducted in the later period, only simple disassembly is needed, and the construction cost is reduced. And the rebuilding construction time of the ballast track roadbed slab of the business line is saved.

Description

Technical Field

[0001] The invention relates to the technical field of railway construction, and in particular to a transition structure for rebuilding a ballastless track ballast slab and a construction method. Background Art

[0002] Ballastless track is a track structure that uses concrete, asphalt mixture and other integral foundations to replace the granular gravel roadbed. Ballastless track uses a highly rigid bonded hardened material as the roadbed plate, which significantly improves the load transfer and diffusion functions of the system.

[0003] During the long-term use of ballastless track, the ballast bed plate is easily damaged due to the high-frequency impact of large loads. Therefore, it needs to be replaced in time and the ballastless track bed needs to be chiseled out and rebuilt. During the chiseling and reconstruction process of the ballastless track bed, wooden sleepers are generally used for temporary transition.

[0004] The existing ballastless track bed is removed and rebuilt in the process, and quick-hardening polymer concrete needs to be poured under the wooden sleepers for leveling. The wooden sleepers are fixed and limited by angle steel in the horizontal direction, and reinforced with M24 chemical bolts. The wooden sleepers are fixed and limited by angle steel in the vertical direction, and reinforced with M24 chemical bolts. After the original track bed is removed, the surface is uneven, and after the templates around the wooden sleepers are installed, it is difficult to seal the templates tightly, which easily leads to leakage and is not easy to pour and level. Moreover, the quick-hardening polymer concrete poured under the wooden sleepers needs to be removed when the new track bed is rebuilt later, which increases the workload of the reconstruction and extends the construction period. Summary of the invention

[0005] The invention provides a ballastless track slab reconstruction construction transition structure and construction method, which are used to solve the defects that it is not easy to level the cast fast-hardening polymer concrete under the wooden sleeper and the workload of the reconstruction construction will be increased during the existing ballastless track slab chiseling and reconstruction construction process.

[0006] The present invention provides a transition structure for reconstruction of a ballastless track bed slab, comprising wooden sleepers, sleeper blocks and filling bags, wherein a plurality of the wooden sleepers are arranged in parallel at equal intervals along the extension direction of the track, and the wooden sleepers are connected under two steel rails; a sleeper block is connected to the lower part of both ends of each of the wooden sleepers; the filling bag is arranged between the sleeper block and the reconstruction base surface of the bed slab, and the filling bag is filled with fillers so that the load on the sleeper block acts downward on the reconstruction base surface of the bed slab through the filling bag.

[0007] According to a ballastless track slab reconstruction construction transition structure provided by the present invention, the sleeper block and the wooden sleeper are fastened together by a U-shaped clamp, each of the sleeper blocks and one end of the wooden sleeper are fastened by two U-shaped clamps, and the two U-shaped clamps are symmetrically arranged on both sides of a rail.

[0008] According to a ballastless track slab reconstruction construction transition structure provided by the present invention, the U-shaped hoop includes bolt connection assemblies located on both sides of the sleeper block, and 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 located on the lower surface of the sleeper block; the top ends of the two bolt connection assemblies are connected by a clamping piece, and the clamping piece is located on the upper surface of the wooden sleeper. The clamping piece and the bolt connection assembly are detachably connected to form a U-shaped structure to cooperate with the U-shaped structure to clamp the sleeper block and the wooden sleeper.

[0009] According to a ballastless track slab reconstruction construction transition structure provided by the present invention, the ends of the same side of the plurality of wooden sleepers are connected by channel steel members to form position limiting reinforcement of the plurality of wooden sleepers along the extension direction of the track.

[0010] According to a ballastless track slab reconstruction construction transition structure provided by the present invention, two channel steel parts are arranged in parallel at the same side ends of a plurality of wooden sleepers, the two channel steel parts are located on both sides of a rail, the channel steel parts are constructed as clamping parts of the U-shaped clamp, and the two U-shaped clamps located at the same end of the wooden sleeper are connected by a transverse connecting piece.

[0011] According to a ballastless track slab reconstruction construction transition structure provided by the present invention, both ends of the wooden sleeper are inserted into wooden pillow casings, the wooden pillow casings cover the ends of the wooden sleeper and the ends of the sleeper blocks, the side of the wooden pillow casing away from the rail is connected to a limiting assembly, the limiting assembly is fixed to the slab reconstruction base surface by bolt fasteners, and the two wooden pillow casings and the limiting assembly at both ends of the wooden sleeper form a lateral limiting reinforcement for the wooden sleeper.

[0012] According to a ballastless track ballast plate reconstruction construction transition structure provided by the present invention, the limiting assembly includes a vertical plate, a horizontal plate and a rib plate, the vertical plate is fitted and connected to the side of the wooden pillow box, the horizontal plate is vertically connected to the bottom end of the vertical plate, the horizontal plate is fixed to the ballast plate reconstruction base surface by bolt fasteners, and the rib plate connects the vertical plate and the horizontal plate.

[0013] According to a ballastless track slab reconstruction construction transition structure provided by the present invention, the vertical plate is provided with a vertical long hole, the end of the sleeper block is provided with a protruding bolt, the protruding bolt passes through the side of the wooden pillow 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 wooden pillow box through the fastening nut and the protruding bolt.

[0014] The present invention also provides a construction method for a ballastless track slab reconstruction transition structure, comprising steps S1 to S3.

[0015] S1. Remove the ballastless track construction section slab and arrange multiple wooden sleepers in parallel at equal intervals under the track along the extension direction of the track as a temporary transition.

[0016] S2. Install sleeper blocks under both ends of each wooden sleeper.

[0017] S3, stuffing a filling bag under the sleeper block, and filling the space under the sleeper block by injecting polymer mortar or low-viscosity resin into the filling bag, so that the track load acts downward on the reconstruction base surface of the track bed through the wooden sleepers, the sleeper blocks and the filling bag in sequence.

[0018] A construction method for a ballastless track slab reconstruction transition structure provided by the present invention further includes step S4 and step S5.

[0019] S4. A wooden pillow box is covered on the end of the wooden sleeper and the end of the sleeper block. The side of the wooden pillow box away from the rail is connected to a limiting component. The limiting component is fixed to the rebuilt base surface of the track bed plate by bolt fasteners to form a lateral limiting reinforcement for the wooden sleeper.

[0020] S5. Place a channel steel piece at the same side end of the plurality of wooden sleepers; connect and tighten each of the wooden sleepers and the sleeper block through a U-shaped clamp and the channel steel piece to form a limit reinforcement for the plurality of wooden sleepers along the extension direction of the track.

[0021] The transition structure and construction method for ballastless track bed slab reconstruction provided by the present invention can be used for transition during the reconstruction of ballastless track bed slabs on operating lines. It is a modular connection structure, in which a sleeper block is added under the two ends of each wooden sleeper, and a filling bag is stuffed under the sleeper block. The space under the sleeper block is filled by injecting polymer mortar or low-viscosity resin into the bag to ensure that the track load is transferred downward to the reconstruction base of the bed slab. The overall transition structure consists of wooden sleepers, sleeper blocks and filling bags, which can meet the transition operation of operating lines through simple installation and connection. Moreover, no fixed casting structure is formed on the reconstruction base of the bed slab. When the bed slab is rebuilt later, it only needs to be simply dismantled, which saves the construction time of the reconstruction of the ballasted track bed slab on the operating line. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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.

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

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

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

[0026] Figure numerals: 1. wooden sleeper; 2. sleeper block; 3. filling bag; 4. U-shaped clamp; 5. channel steel; 6. wooden pillow box; 7. limiting assembly; 71. vertical plate; 72. horizontal plate; 73. rib plate; 74. long hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present 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", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0029] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0030] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean 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 being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0032] Combine the following Figures 1 to 3 The invention describes a transition structure and a construction method for rebuilding a ballastless track slab.

[0033] One embodiment of the present invention provides a ballastless track slab reconstruction construction transition structure, combined with Figure 1 and Figure 2 As shown, it includes a wooden sleeper 1, a sleeper block 2 and a filling bag 3, wherein a plurality of wooden sleepers 1 are arranged in parallel with equal intervals along the extension direction of the track, and the wooden sleepers 1 are connected under two steel rails; a sleeper block 2 is connected to the lower part of both ends of each wooden sleeper 1; the filling bag 3 is arranged between the sleeper block 2 and the reconstruction base surface of the track bed slab, and the filling bag 3 is filled with fillers so that the load on the sleeper block 2 acts downward on the reconstruction base surface of the track bed slab through the filling bag 3.

[0034] It can be understood that the ballastless track slab reconstruction construction transition structure of this embodiment can be used for transition during the ballastless track slab reconstruction construction process of the operating line. After the original slab is chiseled off, a wooden sleeper 1 is used for temporary transition. After the original slab is chiseled off, the reconstruction base of the slab is uneven. If a conventional casting template is used, it is difficult to seal the periphery of the slab, which is very likely to cause leakage and is not easy to cast and level. Moreover, the poured fast-hardening polymer concrete needs to be chiseled off when the new slab is rebuilt later, which increases the workload of the reconstruction construction. The ballastless track slab reconstruction construction transition structure of this embodiment is a modular connection structure. An 800mm sleeper block 2 is added under the two ends of each wooden sleeper 1. A filling bag 3 is stuffed under the sleeper block 2. The space under the sleeper block 2 is filled by injecting polymer mortar or low-viscosity resin into the bag to ensure that the track load is transferred downward to the reconstruction base of the slab. The overall transition structure consists of wooden sleepers 1, sleeper blocks 2 and filling bags 3. It can meet the transition operation needs of the operating line through simple installation and connection. Moreover, no fixed casting structure is formed on the base surface of the track bed reconstruction. When the track bed is rebuilt later, only simple dismantling is required, which saves the construction time of the track bed reconstruction of the operating line.

[0035] In some embodiments of the transition structure for reconstruction of ballastless track ballast bed slab of the present invention, the sleeper block 2 and the wooden sleeper 1 are clamped together by a U-shaped clamp 4, and each sleeper block 2 is clamped with one end of the wooden sleeper 1 by two U-shaped clamps 4, and the two U-shaped clamps 4 are symmetrically arranged on both sides of a rail. It can be understood that the sleeper block 2 and the wooden sleeper 1 are clamped by the U-shaped clamp 4, and each wooden sleeper 1 is clamped with two sleeper blocks 2 by four U-shaped clamps 4 (each end of the wooden sleeper 1 is clamped with one sleeper block 2 by two U-shaped clamps 4), which can ensure the stability of the transition structure and facilitate the transition use during the reconstruction of the track ballast bed slab of the operating line.

[0036] Specifically, the U-shaped hoop 4 includes bolt connection assemblies located on both sides of the sleeper block 2, the bottom ends of the two bolt connection assemblies are connected by a connector to form a U-shaped structure, and the connector is located 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 located on the upper surface of the wooden sleeper 1. The clamping piece and the bolt connection assembly are detachably connected to form a U-shaped structure that cooperates with the U-shaped structure to clamp the sleeper block 2 and the wooden sleeper 1. It can be understood that in this example, the U-shaped hoop 4 is composed of a U-shaped structure composed of two bolt connection assemblies and a connector and a clamping piece. The sleeper block 2 and the wooden sleeper 1 are located inside the U-shaped structure, and the clamping piece is located on the upper surface of the wooden sleeper 1. The sleeper block 2 and the wooden sleeper 1 can be clamped by being detachably connected and tightened by the U-shaped structure and the clamping piece.

[0037] Based on the transition structure for reconstruction of ballastless track slab in the above-mentioned embodiment, after the construction and installation of the transition structure is completed, the transition structure can be reinforced. In some embodiments of the transition structure for reconstruction of ballastless track slab of the present invention, the ends of the same side of multiple wooden sleepers 1 are connected by a channel steel member 5 to form a limit reinforcement of multiple wooden sleepers 1 along the extension direction of the track. The channel steel member 5 adopts a full-length channel steel, and the connection of multiple wooden sleepers 1 along the extension direction of the track is realized by the channel steel member 5. The multiple wooden sleepers 1 are connected as one to realize the limit reinforcement of multiple wooden sleepers 1 along the extension direction of the track.

[0038] Specifically, for some examples, see Figure 2 As shown, two channel steel members 5 are arranged in parallel at the same side ends of multiple wooden sleepers 1. The two channel steel members 5 are located on both sides of a steel rail. The channel steel member 5 is constructed as a clamping member of the U-shaped clamp 4. The two U-shaped clamps 4 located at the same end of the wooden sleeper 1 are connected by a transverse connecting member. In this example, the channel steel member 5 not only serves as a connecting member for multiple wooden sleepers 1, but also as a clamping member for the U-shaped clamp 4. Four channel steel members 5 are arranged in parallel along the extension direction of the track. A channel steel member 5 is arranged on both sides of each steel rail. When the channel steel member 5 crosses a wooden sleeper 1 along the extension direction of the track, it is connected to the U-shaped structure of the U-shaped clamp 4 on the wooden sleeper 1, which not only forms a clamping of a single wooden sleeper 1 and a sleeper block 2, but also forms a limiting reinforcement of multiple wooden sleepers 1 along the extension direction of the track.

[0039] In addition to the limiting reinforcement of multiple wooden sleepers 1 along the extension direction of the track, each wooden sleeper 1 can also be transversely reinforced. In other embodiments of a ballastless track ballast plate reconstruction construction transition structure of the present invention, both ends of the wooden sleeper 1 are inserted into a wooden pillow box 6, and the wooden pillow box 6 covers the end of the wooden sleeper 1 and the end of the sleeper block 2. The side of the wooden pillow box 6 away from the rail is connected to a limiting component 7, and the limiting component 7 is fixed to the ballast plate reconstruction base surface by bolt fasteners. The two wooden pillow boxes 6 and the limiting component 7 at both ends of the wooden sleeper 1 form a transverse limiting reinforcement for the wooden sleeper 1.

[0040] It can be understood that in the ballastless track slab reconstruction construction transition structure in the present embodiment, wooden pillow boxes 6 are provided at both ends of each wooden sleeper 1, the wooden pillow boxes 6 are connected with the limiting assembly 7 as a whole, and are fixed to the slab reconstruction base surface by bolt fasteners, and a combination structure of wooden pillow boxes 6 and the limiting assembly 7 is provided at both ends of the wooden sleeper 1. The combination structure of the two wooden pillow boxes 6 and the limiting assembly 7 forms a lateral limit for the wooden sleeper 1 located between the two combined structures, thereby ensuring that the wooden sleeper 1 does not jump laterally.

[0041] In particular, in some examples, see Figure 1As shown, the limit assembly 7 includes a vertical plate 71, a horizontal plate 72 and a rib plate 73. The vertical plate 71 is connected to the side of the wooden pillow box 6, and the horizontal plate 72 is vertically connected to the bottom end of the vertical plate 71. The horizontal plate 72 is fixed to the reconstruction base surface of the track bed plate by bolt fasteners, 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 limit assembly 7 is fixed to the reconstruction base surface of the track bed plate by bolt fasteners to form a limit base, the vertical plate 71 of the limit assembly 7 is connected to the wooden pillow box 6, and the limit function is applied to the wooden pillow box 6. The rib plate 73 of the limit assembly 7 is set along the direction in which the wooden sleeper 1 may jump laterally to strengthen the lateral limit strength, and finally ensure the lateral limit reinforcement of the wooden sleeper 1.

[0042] Further, see Figure 3 As shown, the vertical plate 71 is provided with a vertical strip hole 74, and the end of the sleeper block 2 is provided with a protruding bolt, which passes through the side of the wooden pillow box 6 and the strip hole 74, and the fastening nut is sleeved on the protruding bolt to connect the vertical plate 71 to the side of the wooden pillow box 6 through the fastening nut and the protruding bolt. It can be understood that the vertical plate 71 in this example is provided with a strip hole 74, and when the limit assembly 7 is connected and installed, the vertical height of the limit assembly 7 can be adjusted by adjusting the position of the fastening nut in the strip hole 74. Since the rebuilt base surface of the track bed plate is uneven after the original track bed plate is chiseled off, that is, the height of the wooden pillow box 6 from the rebuilt base surface of the track bed plate may be different, the height adjustment of the limit assembly 7 is achieved through the strip hole 74 of this example, so that at any uneven position of the rebuilt base surface of the track bed plate, the limit assembly 7 can be connected and installed in contact with the base surface.

[0043] The following describes the construction method of the transition structure for rebuilding the ballastless track bed slab provided by the present invention. The construction method of the transition structure for rebuilding the ballastless track bed slab described below and the transition structure for rebuilding the ballastless track bed slab described above can be referred to each other.

[0044] An embodiment of the present invention provides a construction method for a transition structure of a ballastless track slab reconstruction, comprising steps S1 to S3.

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

[0046] It is understandable that after the ballastless track slab is chiseled off, the rails are not removed and wooden sleepers 1 are used for transition. The wooden sleeper 1 transition construction is always accompanied by the sleeper removal construction. After chiseling off a 6.25-meter slab (10 sleeper blocks), temporary wooden sleepers 1 transition construction is installed.

[0047] Step S2, installing sleeper blocks 2: installing sleeper blocks 2 under both ends of each sleeper 1. After the sleepers 1 are arranged at a spacing of 0.625m, 800mm sleeper blocks 2 are installed at both ends of the sleepers 1, and the sleeper blocks 2 are connected and fixed to the sleepers 1 with two U-shaped clamps 4.

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

[0049] Furthermore, a construction method for a transition structure for reconstruction of a ballastless track slab of the present invention also includes steps S4 and S5, wherein steps S4 and S5 are for further reinforcing the transition structure after the overall structure installation is completed, wherein step S4 is used to form a lateral limit reinforcement for the wooden sleepers 1, and step S5 is used to form a limit reinforcement for multiple wooden sleepers 1 along the extension direction of the track.

[0050] Step S4: Cover the ends of the wooden sleeper 1 and the ends of the sleeper block 2 with a wooden pillow box 6, connect the side of the wooden pillow box 6 away from the rail with a limiting component 7, and fix the limiting component 7 to the rebuilt base surface of the track bed plate by bolt fasteners to form a lateral limiting reinforcement for the wooden sleeper 1.

[0051] Step S5, placing a channel steel piece 5 at the same side end of the plurality of wooden sleepers 1; connecting and tightening each wooden sleeper 1 and the sleeper block 2 through a U-shaped clamp 4 and the channel steel piece 5 to form a limit reinforcement for the plurality of wooden sleepers 1 along the extension direction of the track.

[0052] The above-mentioned ballastless track ballast slab reconstruction transition structure construction method is adopted to carry out transition construction during the dismantling and reconstruction of the operating line ballast slab. The wooden sleepers 1, the sleeper blocks 2 and the filling bags 3 form a modular transition structure, and by reinforcing the transition structure, not only the driving safety of the operating line construction is ensured, but also the reinforcement can be completed within one skylight, saving the construction time of the operating line.

[0053] 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 transition structure for reconstruction of ballastless track slab, characterized in that: include: Wooden sleepers (1), a plurality of the 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 steel rails; Sleeper blocks (2), each of the two lower parts of the wooden sleeper (1) being connected to a sleeper block (2); A filling bag (3) is arranged between the sleeper block (2) and the track bed slab reconstruction base surface, and the filling bag (3) is filled with a filling material so that the load on the sleeper block (2) acts downward on the track bed slab reconstruction base surface through the filling bag (3).

2. The ballastless track slab reconstruction transition structure according to claim 1 is characterized in that: The sleeper block (2) and the wooden sleeper (1) are clamped together as a whole by a U-shaped clamp (4); one end of each sleeper block (2) and the wooden sleeper (1) is clamped together by two U-shaped clamps (4); and the two U-shaped clamps (4) are symmetrically arranged on both sides of a steel rail.

3. The ballastless track slab reconstruction transition structure according to claim 2 is characterized in that: The U-shaped clamp (4) comprises bolt connection assemblies located on both sides of the sleeper block (2), the bottom ends of the two bolt connection assemblies being connected by a connecting piece to form a U-shaped structure, the connecting piece being located on the lower surface of the sleeper block (2); the top ends of the two bolt connection assemblies being connected by a clamping piece, the clamping piece being located on the upper surface of the wooden sleeper (1), the clamping piece being detachably connected to the bolt connection assemblies to form a clamping piece that cooperates with the U-shaped structure to clamp the sleeper block (2) and the wooden sleeper (1) tightly.

4. The ballastless track slab reconstruction transition structure according to claim 3 is characterized in that: The ends of the same side of the plurality of wooden sleepers (1) are connected via a channel steel member (5) to form position-limiting reinforcement of the plurality of wooden sleepers (1) along the extension direction of the track.

5. The ballastless track slab reconstruction transition structure according to claim 4 is characterized in that: Two of the channel steel members (5) are arranged in parallel at the same side end of the plurality of wooden sleepers (1); the two channel steel members (5) are located on both sides of a steel rail; the channel steel member (5) is constructed as a clamping member of the U-shaped clamp (4); and the two U-shaped clamps (4) located at the same end of the wooden sleeper (1) are connected via a transverse connecting member.

6. The ballastless track slab reconstruction transition structure according to any one of claims 1 to 5, characterized in that: Both ends of the wooden sleeper (1) are sleeved in wooden pillow casings (6), the wooden pillow casings (6) covering the ends of the wooden sleeper (1) and the ends of the sleeper blocks (2), the side of the wooden pillow casing (6) away from the rails is connected to a limiting assembly (7), the limiting assembly (7) is fixed to the reconstructed base surface of the track bed plate by bolt fasteners, and the two wooden pillow casings (6) and the limiting assembly (7) at the two ends of the wooden sleeper (1) form a lateral limiting reinforcement for the wooden sleeper (1).

7. The ballastless track slab reconstruction transition structure according to claim 6, characterized in that: The limiting assembly (7) comprises a vertical plate (71), a horizontal plate (72) and a rib plate (73); the vertical plate (71) is fitted and connected to the side of the wooden pillow case (6); the horizontal plate (72) is vertically connected to the bottom end of the vertical plate (71); the horizontal plate (72) is fixed to the track bed plate reconstruction base surface by bolt fasteners; and the rib plate (73) connects the vertical plate (71) and the horizontal plate (72).

8. The ballastless track slab reconstruction transition structure according to claim 7, characterized in that: The vertical plate (71) is provided with a vertical long 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 pillow case (6) and the long hole (74), and a fastening nut is sleeved on the protruding bolt, so that the vertical plate (71) is connected to the side of the wooden pillow case (6) through the fastening nut and the protruding bolt.

9. A construction method for a transition structure for ballastless track slab reconstruction, characterized in that: include: S1, chiseling away the ballastless track construction section slab, and arranging a plurality of wooden sleepers (1) in parallel and at equal intervals below the track along the extension direction of the track as a temporary transition; S2, installing sleeper blocks (2) under both ends of each of the wooden sleepers (1); S3, a filling bag (3) is filled under the sleeper block (2), and a polymer mortar or a low-viscosity resin is injected into the filling bag (3) to fill the space under the sleeper block (2), so that the track load acts downward on the reconstruction base surface of the track bed through the wooden sleeper (1), the sleeper block (2), and the filling bag (3) in sequence.

10. The construction method of the transition structure for ballastless track slab reconstruction according to claim 9, characterized in that: Also includes: S4, covering the ends of the wooden sleeper (1) and the ends of the sleeper blocks (2) with wooden pillow covers (6), connecting the side of the wooden pillow cover (6) away from the rail with a limiting component (7), and fixing the limiting component (7) to the reconstructed base surface of the ballast plate by bolt fasteners, so as to form a lateral limiting reinforcement for the wooden sleeper (1); S5. A channel steel member (5) is placed at the same side end of the plurality of wooden sleepers (1); each of the wooden sleepers (1) and the sleeper block (2) are connected and clamped together via a U-shaped clamp (4) and the channel steel member (5), so as to form a position-limiting reinforcement for the plurality of wooden sleepers (1) along the extension direction of the track.

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