A precast slab member, a precast slab assembly structure and a construction method thereof

Abstract

This application provides a prefabricated sliding plate component, a prefabricated sliding plate assembly structure, and a construction method thereof. The prefabricated sliding plate component includes a core load-bearing block, a pre-compression base block, and a guide slider. The pre-compression base block is connected to the core load-bearing block, and a stepped groove is formed between the pre-compression base block and the core load-bearing block. The guide slider is connected to the side of the core load-bearing block opposite to the pre-compression base block, and the top surface of the guide slider and the core load-bearing block smoothly transitions. Multiple prefabricated sliding plate components can be connected sequentially along a first direction, and in two adjacent prefabricated sliding plate components, the guide slider of one can be embedded in the stepped groove of the other. The prefabricated sliding plate component of this invention has a simple shape and high rigidity and strength. The factory prefabrication and on-site assembly construction method saves construction time and eliminates the problems of high construction difficulty and long curing time associated with cast-in-place sliding plates. After the structure has been jacked up, it can be quickly dismantled and re-laid in front of the structure, allowing for multiple reuses and reducing project costs.

Description

Technical Field

[0001] This invention relates to the field of jacking construction technology for other railway underpass structures such as frame bridges, U-shaped channels, and pile slabs. Specifically, it relates to a prefabricated sliding plate component, a prefabricated sliding plate assembly structure, and its construction method. Background Technology

[0002] The precast jacking method for frame bridges, especially railway frame bridges, can ensure uninterrupted operation of existing railways and greatly reduce the impact time on existing railways, and has been widely used in the engineering field. In the jacking implementation of frame bridge projects, the sliding plate follow-up process is an important technical means that can effectively reduce jacking deviation and improve the performance of the foundation soil. It is especially important in long-distance jacking construction and under conditions of poor foundation bearing capacity. According to the "Notice of the Engineering and Electrical Department of China State Railway Group on Strengthening the Review and Construction Safety Management of Engineering Plans for Crossing (Spanning) Railway Operating Lines and Adjacent Operating Lines" (Gongdianqiaofanghan

[2020] No. 48), the sliding plate should be extended and a guiding device should be set up during the jacking of frame bridges.

[0003] In existing technologies, jacking slide plates are typically constructed using in-situ casting. Due to this process, casting in-situ not only requires a significant amount of time, but also necessitates a long curing period after the concrete has reached its full strength. The time spent on slide plate fabrication greatly impacts construction progress, and the prolonged exposure of the railway beneath it increases construction risks. Influenced by factors such as the construction process of cast-in-situ slide plates, limited construction space, and the stability of the unexcavated soil ahead, construction companies often use full-coverage steel plates as a substitute. However, steel structures have low rigidity, high cost, and poor performance, failing to effectively fulfill the intended function of a slide plate. Some construction companies even skip the installation of slide plates during jacking, proceeding directly after excavation, posing significant safety hazards.

[0004] For structures such as frame bridges, U-shaped channels, and pile slabs involved in underpass construction of railways (including conventional and high-speed railways), such problems are involved if the jacking method is used. This invention can solve these problems. For ease of explanation, the following discussion will take frame bridges as an example.

[0005] In view of this, the present invention is hereby proposed. Summary of the Invention

[0006] This invention provides a prefabricated sliding plate component, a prefabricated sliding plate assembly structure, and a construction method thereof.

[0007] This application provides the following technical solution:

[0008] The primary objective of this application is to provide a prefabricated sliding plate component, comprising:

[0009] Core load-bearing block;

[0010] A pre-compression base block is connected to the core force-bearing block, and a stepped groove is formed between the pre-compression base block and the core force-bearing block;

[0011] A guide slider is connected to the side of the core force-bearing block away from the pre-compression base block, and the top surface of the guide slider and the core force-bearing block transition smoothly.

[0012] Multiple prefabricated sliding plate components can be connected sequentially along a first direction. In two adjacent prefabricated sliding plate components, the guide slider of one can be embedded in the step groove of the other. The upper surface of the guide slider of one of the two adjacent prefabricated sliding plate components and the upper surface of the core force block of the other can be smoothly transitioned.

[0013] Optionally, the guide slider is provided with a first protrusion, and the pre-compression base block has a first protrusion mating groove;

[0014] The extension direction of the first tenon is opposite to the orientation of the groove of the first tenon mating groove.

[0015] Optionally, the pre-compression base block and the guide slider are respectively disposed on both sides of the core force-bearing block along the first direction;

[0016] The guide slider is provided with a second tenon on each side along the second direction, and the second tenon extends along the second direction;

[0017] The core force-bearing block is provided with second tenon mating grooves on both sides along the second direction, and the groove openings of the second tenon mating grooves are parallel to the extension direction of the second tenon.

[0018] The second direction is perpendicular to the first direction.

[0019] Optionally, a third tenon is provided at the bottom of the core force-bearing block.

[0020] Optionally, the prefabricated sliding plate component includes a steel plate connected to the upper surface of the core load-bearing block and the pre-compression base block.

[0021] The second objective of this application is to provide a prefabricated slide assembly structure, comprising:

[0022] The aforementioned prefabricated sliding plate components include a third tenon at the bottom of the core load-bearing block of each component, which is embedded in the foundation.

[0023] Along the first direction, in two adjacent prefabricated slide plate components, the guide slider of one is embedded in the stepped groove of the other, and the upper surface of the guide slider of one of the two adjacent prefabricated slide plate components and the upper surface of the core force block of the other smoothly transition.

[0024] Optionally, the guide slider of the prefabricated sliding plate component is provided with a first tenon, and the pre-compression base block of the prefabricated sliding plate component has a first tenon mating groove;

[0025] Along the first direction, in two adjacent prefabricated slide plate components, the first tenon of one is embedded in the first tenon mating groove of the other.

[0026] Optionally, the pre-compression base block and the guide slider are respectively disposed on both sides of the core force-bearing block along the first direction;

[0027] The guide slider is provided with a second tenon on each side along the second direction;

[0028] The core force-bearing block is provided with second tenon mating grooves on both sides along the second direction;

[0029] In two adjacent prefabricated slide plate components along the second direction, the second tenon of one component is embedded in the second tenon mating groove of the other component.

[0030] Optionally, a third tenon is provided at the bottom of the core load-bearing block of the prefabricated slide plate component, and the third tenon is embedded in the foundation.

[0031] The third objective of this application is to provide a construction method for the prefabricated sliding plate assembly structure, including:

[0032] Step S1: Lay prefabricated sliding plate components on the foundation to form a sliding plate section. The width of the sliding plate section is greater than the width of the base plate of the structure.

[0033] Step S2: Push the structure forward so that it moves along the sliding plate section;

[0034] Step S3: Determine if the structure is in place. If the structure is in place, proceed to step S4; otherwise, proceed to step S1.

[0035] Step S4: The jacking construction of the structure is completed.

[0036] Optionally, step S1 includes:

[0037] Step S11: Disassemble the prefabricated sliding plate component at the rear of the structure;

[0038] Step S12: Move the disassembled prefabricated slide plate component to the front of the jacking of the structure and lay the next slide plate segment.

[0039] The embodiments of this application, by adopting the above technical solutions, have the following technical effects:

[0040] The prefabricated sliding plate component of this invention has a simple shape and high rigidity and strength. The construction method of factory prefabrication and on-site assembly saves construction time and eliminates the problems of difficult construction and long curing time of cast-in-place sliding plate. After the structure is jacked up, it can be quickly dismantled and re-laid in front of the structure, and can be reused multiple times to reduce project costs. Attached Figure Description

[0041] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0042] Figure 1 This is a structural schematic diagram of the prefabricated sliding plate component provided in the embodiments of this application;

[0043] Figure 2 A front perspective view of the prefabricated sliding plate component provided in the embodiments of this application;

[0044] Figure 3 A top perspective view of a prefabricated sliding plate component provided in an embodiment of this application;

[0045] Figure 4 A side perspective view of a prefabricated sliding plate component provided in an embodiment of this application;

[0046] Figure 5 A schematic diagram of the structure in which multiple prefabricated slide plate components are arranged and fitted together along a first direction in the prefabricated slide plate assembly structure provided in the embodiments of this application;

[0047] Figure 6 A schematic diagram of a prefabricated sliding plate assembly structure provided in this application embodiment, showing multiple prefabricated sliding plate components arranged and fitted together in sequence along a second direction;

[0048] Figure 7 This is a top view of the prefabricated slide assembly structure provided in the embodiments of this application.

[0049] Figure label:

[0050] 100. Precast sliding plate component; 1. Core load-bearing block; 11. Second tenon mating groove; 12. Third tenon; 2. Pre-compression base block; 21. First tenon mating groove; 3. Guide slider; 31. First tenon; 32. Second tenon; 4. Step groove; 5. Steel plate; 200. Foundation. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0052] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., 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 this invention and simplifying the description, and do not indicate or imply that the device or component 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 this invention.

[0053] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0054] Example 1

[0055] See Figures 1 to 7 As shown, Embodiment 1 of this application provides a prefabricated sliding plate component 100, including: a core force-bearing block 1, a pre-compression base block 2, and a guide slider 3. The pre-compression base block 2 is connected to the core force-bearing block 1, and a stepped groove 4 is formed between the pre-compression base block 2 and the core force-bearing block 1. The guide slider 3 is connected to the side of the core force-bearing block 1 opposite to the pre-compression base block 2, and the top surface of the guide slider 3 and the core force-bearing block 1 smoothly transition. Multiple prefabricated sliding plate components 100 can be connected sequentially along a first direction. In two adjacent prefabricated sliding plate components 100, the guide slider 3 of one can be embedded in the stepped groove 4 of the other, and the upper surface of the guide slider 3 of one of the two adjacent prefabricated sliding plate components 100 smoothly transitions to the upper surface of the core force-bearing block 1 of the other. The aforementioned first direction can be the jacking direction of the structure, and multiple prefabricated sliding plate components 100 can be connected sequentially along the jacking direction of the structure. The precast sliding plate component 100 of this invention has a simple design and high rigidity. Its factory prefabrication and on-site assembly method saves construction time and eliminates the problems associated with the construction and curing time of cast-in-place sliding plates. After the structure has been jacked up, it can be quickly dismantled and re-laid in front of the structure, allowing for multiple reuses and reducing project costs. The precast sliding plate component 100 is entirely a reinforced concrete structure. Precast in the factory and assembled on-site, the precast sliding plate component 100 connects seamlessly with the cast-in-place base slab of the structure, forming a sliding plate channel along the jacking path, meeting the sliding plate follow-up requirements of the jacking construction. It exhibits minimal deformation under vertical forces, can withstand jacking friction, and remains undamaged under localized friction.

[0056] It should be noted that for structures such as frame bridges, U-shaped channels, and pile slabs involved in underpass construction of railways (including conventional and high-speed railways), the technical solutions provided in this application can all be adopted if the jacking method is used. When jacking construction of frame bridges is involved, the term "structure" in the above text can be understood as the frame bridge itself. When jacking other structures is involved, "structure" should be reasonably understood as the corresponding structure that needs to be jacked. The following discussion will use frame bridges as an example.

[0057] In one possible implementation, see Figure 2 and Figure 5 As shown, the guide slider 3 is provided with a first tenon 31, and the pre-compression base block 2 has a first tenon mating groove 21. The extending direction of the first tenon 31 and the opening of the first tenon mating groove 21 are opposite. For example Figure 2 As shown, a first tenon 31 is provided at the lower position of the guide slider 3, and a first tenon mating groove 21 is provided at the upper position of the pre-compression base block 2. In a plurality of prefabricated slide plate components 100, the guide slider 3 of one of two adjacent prefabricated slide plate components 100 can be embedded from top to bottom into the stepped groove 4 of the other, and the first tenon 31 of the guide slider 3 is inserted into the first tenon mating groove 21 of the pre-compression base block 2.

[0058] Multiple prefabricated sliding plate components 100 are connected sequentially along a first direction. In two adjacent prefabricated sliding plate components 100, the guide slider 3 of one can be embedded in the step groove 4 of the other. The first tenon 31 of the guide slider 3 is inserted into the first tenon mating groove 21 of the pre-compression base block 2. Each adjacent prefabricated sliding plate component 100 is formed as a whole by the first tenon 31 and the first tenon mating groove 21.

[0059] See Figure 3 and Figure 6As shown, the pre-compression base block 2 and the guide slider 3 are respectively disposed on both sides of the core force-bearing block 1 along the first direction. The guide slider 3 is provided with second tenons 32 on both sides along the second direction, and the second tenons 32 extend along the second direction. The core force-bearing block 1 is provided with second tenon mating grooves 11 on both sides along the second direction, and the openings of the second tenon mating grooves 11 are parallel to the extending direction of the second tenons 32. This allows the second tenon 32 of one of the adjacent prefabricated sliding plate components 100 along the second direction to be smoothly inserted into the second tenon mating groove 11 of the other. The second direction is perpendicular to the first direction. The first direction refers to the jacking direction of the frame bridge, and the second direction is perpendicular to the jacking direction of the frame bridge. Multiple prefabricated sliding plate components 100 can also be spliced ​​along the second direction, with the second tenons 32 of the guide slider 3 on both sides of the second direction respectively inserted into the second tenon mating grooves 11 on both sides of the adjacent core force-bearing block 1 along the second direction. The prefabricated sliding plate components 100 are stacked one on top of the other and staggered left and right. That is, the prefabricated sliding plate components 100 are stacked along the first direction and staggered along the second direction. Adjacent prefabricated sliding plate components 100 are connected to each other by a mortise and tenon structure consisting of tenons and grooves, forming a sliding plate structure that shares the load. This not only can withstand horizontal shear force but also enhances the overall structural integrity of the prefabricated sliding plate components 100. When the frame bridge is in the transition state between the front and rear structural blocks, a vertical load can be pre-applied by the second tenons 32 on both sides of the guide slider 3 along the second direction, so that the rear guide slider 3 enters a partial load state, reducing the risk of the jacking forward through the joint transition section.

[0060] See Figure 4 and Figure 5 As shown, a third tenon 12 is provided at the bottom of the core load-bearing block 1. The third tenon 12 not only fixes the prefabricated sliding plate component 100 to the foundation 200, but also increases the friction between the prefabricated sliding plate component 100 and the foundation 200, thereby increasing the density of the foundation soil by compressing it and thus improving the bearing capacity. Two third tenons 12 can be provided at the bottom of the core load-bearing block 1.

[0061] See Figure 2 As shown, the prefabricated sliding plate component 100 includes a steel plate 5, which is connected to the upper surface of the core load-bearing block 1 and the pre-compression foundation block 2. The prefabricated sliding plate component 100 is entirely a reinforced concrete structure, with a steel plate 5 covering structure on top. The steel plate 5 is integrally cast with the concrete to increase the structural strength of the prefabricated sliding plate component 100 and reduce its frictional resistance. An anti-slip coating can also be applied to the steel plate 5, and polymer sliding plate material can be added to reduce the jacking resistance of the frame bridge.

[0062] In this application, each prefabricated slide plate component 100 is connected by mortise and tenon joints in the first and second directions. The shape of the mortise and tenon joints is not limited, and the number can also be adjusted according to the structural dimensions of the prefabricated slide plate component 100.

[0063] The tenon on the precast sliding plate component 100 can be cast integrally with the precast sliding plate component 100 using a reinforced concrete structure, or it can be a steel welded structure pre-installed on the precast sliding plate component 100.

[0064] For the connection between prefabricated slide plate components 100, a shear stud structure can also be used. A structure is reserved at the corresponding position of the prefabricated slide plate component 100, and a steel component is inserted after the structure is assembled, so as to achieve the purpose of connecting the prefabricated slide plate components 100 to each other.

[0065] Example 2

[0066] See Figure 5 As shown, Embodiment 2 of this application provides a prefabricated sliding plate assembly structure, including multiple prefabricated sliding plate components 100 as described in Embodiment 1 above. Each of the prefabricated sliding plate components 100 is laid on a foundation 200. Along a first direction, in two adjacent prefabricated sliding plate components 100, the guide slider 3 of one is embedded in the stepped groove 4 of the other, and the upper surface of the guide slider 3 of one of the two adjacent prefabricated sliding plate components 100 and the upper surface of the core force-bearing block 1 of the other smoothly transition, so that the frame bridge can pass smoothly between two adjacent prefabricated sliding plate components 100 during the jacking process.

[0067] The core load-bearing block 1 of the prefabricated sliding plate component 100 has a downward slope at one end of the pre-compression base block 2, and the guide slider 3 has a downward slope at the end opposite to the core load-bearing block 1. In the prefabricated sliding plate assembly structure, the downward slope of the core load-bearing block 1 of one of two adjacent prefabricated sliding plate components 100 and the downward slope of the guide slider 3 of the other are smoothly spliced ​​together, forming a gradually transitioning downward slope in the jacking direction of the frame bridge, which is an inverted "boat-shaped slope" structure, so that the frame bridge can be smoothly jacked along the prefabricated sliding plate component 100.

[0068] In one possible implementation, see Figure 2 and Figure 5 As shown, the guide slider 3 of the prefabricated slide plate component 100 is provided with a first tenon 31, and the pre-compression base block 2 of the prefabricated slide plate component 100 has a first tenon mating groove 21. Along the first direction, that is, the jacking direction of the frame bridge, in two adjacent prefabricated slide plate components 100, the first tenon 31 of one is embedded in the first tenon mating groove 21 of the other.

[0069] See Figure 3 and Figure 6As shown, the pre-compression base block 2 and the guide slider 3 are respectively disposed on both sides of the core force-bearing block 1 along the first direction. The guide slider 3 is provided with second tenons 32 on both sides along the second direction. The core force-bearing block 1 is provided with second tenon mating grooves 11 on both sides along the second direction. Along the second direction, that is, perpendicular to the jacking direction of the frame bridge, in two adjacent prefabricated sliding plate components 100, the second tenon 32 of one component is embedded in the second tenon mating groove 11 of the other component.

[0070] See Figure 5 , Figure 6 and Figure 7 As shown, the prefabricated slide plate component 100 of the prefabricated slide plate assembly structure adopts a staggered assembly method. That is, the guide slider 3 of the current prefabricated slide plate component 100 is connected to the core force-bearing block 1 of the prefabricated slide plate component 100, and the lateral adjacent core force-bearing block 1 is half the length of the prefabricated slide plate component 100, ensuring that at most half of the structure at the joint of the prefabricated slide plate assembly structure is in a front-to-back separated state. By staggering the assembly, a through seam in the front-to-back direction can be avoided, thereby meeting the stress requirements.

[0071] Each prefabricated sliding plate component 100 is stacked front to back and staggered left to right. Adjacent prefabricated sliding plate components 100 are connected by tenons and grooves to form a whole. The tenons and grooves not only bear the horizontal shear force effect, but also enhance the structural integrity of the prefabricated sliding plate components 100. When the frame bridge is in the transition state between the front and rear structural blocks, the second tenons 32 on both sides of the guide slider 3 along the second direction can be used to pre-apply vertical loads, so that the rear guide slider 3 enters a partial load state, reducing the risk of the jacking forward through the joint transition section.

[0072] In one possible implementation, see Figure 2 and Figure 5 As shown, a third tenon 12 is provided at the bottom of the core force-bearing block 1 of the prefabricated slide plate component 100. The third tenon 12 is embedded in the foundation 200 to fix the prefabricated slide plate component 100 to the foundation 200.

[0073] The frame bridge is prefabricated on a cast-in-place concrete base slab. After the base slab reaches its design strength, it is gradually jacked towards the railway. The cast-in-place concrete base slab serves as the starting point for the prefabricated sliding plate component 100, with its front end connecting to the prefabricated sliding plate component 100. The surface height of the prefabricated sliding plate component 100 should be consistent with the height of the cast-in-place concrete base slab to ensure a smooth transition between the two surfaces, achieving a stable transition of the frame bridge across them.

[0074] When assembling the precast sliding plate component 100, the soil of the foundation 200 in front can be manually compacted and a graded crushed stone cushion layer can be pre-laid to enhance the bearing capacity of the foundation 200 and ensure that each precast sliding plate component 100 structure is located on a stable soil layer.

[0075] After the front sliding plate of the frame bridge is assembled, its smoothness and flatness should be inspected, and there should be no obvious unevenness. In the unsupported state, if no excavation is required, multiple precast sliding plate components 100 can be assembled at once. During excavation and jacking, the assembly of precast sliding plate components 100 can be carried out simultaneously with the excavation process, reducing the construction period. After each jacking operation of the frame bridge, the precast sliding plate components 100 left behind at the rear of the frame bridge can be removed and moved to the front for reuse. The construction of precast sliding plate components 100 can be assisted by small machinery to improve construction efficiency.

[0076] During the jacking process of the frame bridge, the guide slider 3 of the front precast sliding plate component 100 is pre-pressed first, which reduces the height of the rear pre-pressed foundation block 2 component to a certain extent and reduces the difficulty of the transition between the guide slider 3 and the pre-pressed foundation block 2 component.

[0077] Example 3

[0078] See Figure 1 and Figure 7 As shown, Embodiment 3 of this application provides a construction method for the prefabricated slide plate assembly structure, including steps S1, S2, S3 and S4.

[0079] Step S1: Lay precast sliding plate components 100 on the foundation 200 to form a sliding plate segment. The width of the sliding plate segment is greater than the width of the bottom plate of the frame bridge. The paving width of the precast sliding plate components 100 should be slightly greater than the width of the bottom plate of the frame bridge to ensure that the frame bridge travels on the precast sliding plate components 100. In the forward direction of the frame bridge, according to the characteristics of the jacking construction process, the paving length of each precast sliding plate component 100 should not be less than the stroke of the jacking pick.

[0080] Step S2: Push the frame bridge forward, causing it to move along the sliding plate section. The core support block 1 of the prefabricated sliding plate component 100 has a downward slope at its end, and the slider has an upward slope at its front end. In the pushing direction of the frame bridge, the downward slope at the end of the core support block 1 and the upward slope at the front end of the slider combine to form a gradually transitioning downward slope, resembling an inverted "boat-shaped slope," allowing the frame bridge to smoothly push forward along the prefabricated sliding plate component 100.

[0081] Step S3: Determine if the frame bridge is in place. If the structure is in place, proceed to step S4; otherwise, proceed to step S1.

[0082] Step S4: The jacking construction of the frame bridge is completed.

[0083] In one possible implementation, step S1 includes steps S11 and S12.

[0084] Step S11: Disassemble the prefabricated sliding plate component 100 on the rear side of the frame bridge.

[0085] Step S12: Move the disassembled precast sliding plate component 100 to the front of the jacking of the frame bridge and lay the next sliding plate section. After each jacking of the frame bridge is completed, the precast sliding plate component 100 left behind the frame bridge can be removed and transferred to the front for reuse, reducing project costs.

[0086] The prefabricated sliding plate component 100 of this invention has a simple design and high rigidity. Its factory prefabrication and on-site assembly method saves construction time and eliminates the problems associated with the construction and maintenance time of cast-in-place sliding plates, thus reducing the impact on the railway and resulting in significant economic benefits. After the frame bridge jacking has passed, it can be quickly dismantled and repaved in front of the frame bridge, allowing for multiple reuses and reducing project costs. Compared with steel plate sliding plates, this prefabricated sliding plate component 100 has greater rigidity and lower cost.

[0087] This prefabricated sliding plate assembly structure not only significantly improves the jacking accuracy of frame bridges and reduces jacking deviations, especially in long-distance jacking and in the presence of poor soil layers, making the construction accuracy of frame bridges more controllable, but also improves the foundation bearing capacity along the jacking path of the frame bridge. For projects with soft soil layers, the technical advantages are obvious. Therefore, this invention has significant technical advantages, strong operability, and obvious promotional potential.

[0088] It should be noted that, apart from frame bridges, other structural types involved in underpasses of railways (including conventional and high-speed railways), such as U-shaped channels and pile-slab structures, can refer to the above implementation schemes and are all within the scope of protection of this application.

[0089] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A prefabricated sliding plate component, characterized in that, include: Core load-bearing block; A pre-compression base block is connected to the core force-bearing block, and a stepped groove is formed between the pre-compression base block and the core force-bearing block; A guide slider is connected to the side of the core force-bearing block away from the pre-compression base block, and the top surface of the guide slider and the core force-bearing block transition smoothly. Multiple prefabricated sliding plate components can be connected sequentially along a first direction for jacking the structure. The first direction is the jacking direction of the structure. In two adjacent prefabricated sliding plate components, the guide slider of one can be embedded in the step groove of the other. The upper surface of the guide slider of one of the two adjacent prefabricated sliding plate components and the upper surface of the core force block of the other smoothly transition. The guide slider is provided with a first protrusion, and the pre-compression base block has a first protrusion mating groove; the extension direction of the first protrusion and the opening of the first protrusion mating groove are opposite. The pre-compression base block and the guide slider are respectively disposed on both sides of the core force-bearing block along the first direction; the guide slider is provided with a second tenon on both sides along the second direction, and the second tenon extends along the second direction; the core force-bearing block is provided with a second tenon mating groove on both sides along the second direction, and the groove opening of the second tenon mating groove is parallel to the extension direction of the second tenon; the second direction is perpendicular to the first direction. The core load-bearing block is provided with a third tenon at its bottom.

2. The prefabricated sliding plate component according to claim 1, characterized in that, It includes a steel plate, which is connected to the upper surface of the core load-bearing block and the pre-stressed foundation block.

3. The construction method of the precast sliding plate component as described in claim 1 or 2, characterized in that, include: Step S1: Lay prefabricated sliding plate components on the foundation to form a sliding plate section. The width of the sliding plate section is greater than the width of the base plate of the structure. Step S2: Push the structure forward so that it moves along the sliding plate section; Step S3: Determine if the structure is in place. If the structure is in place, proceed to step S4; otherwise, proceed to step S1. Step S4: The jacking construction of the structure is completed.

4. The construction method of the precast sliding plate component according to claim 3, characterized in that, Step S1 includes: Step S11: Disassemble the prefabricated sliding plate component at the rear of the structure; Step S12: Move the disassembled prefabricated slide plate component to the front of the jacking of the structure and lay the next slide plate segment.

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