Pouring mold suitable for frame rail plate inner convex form stop table and using method thereof

Abstract

This invention discloses a casting mold for convex retaining platforms within frame track slabs and its application method, belonging to the field of ballastless track maintenance and construction technology. By setting at least two splicing units and corresponding connecting components, and utilizing the corresponding arrangement of transverse support ribs on the splicing units and connecting rods and connectors in the connecting components, a rounded rectangular frame structure can be quickly formed. This forms the casting mold for the convex retaining platform in the hollow area of ​​the frame track slab, rapidly completing the casting of the convex retaining platform within the hollow area of ​​the frame track slab. The casting mold of this invention has a simple structure and is easy to assemble. It can quickly solve the limiting problem caused by damage to the convex retaining platforms at both ends of the frame track slab, ensuring the stability and durability of the frame track slab and the ballastless track, guaranteeing the safety of high-speed rail operation, and significantly simplifying the inspection and maintenance process of ballastless tracks with frame track slabs. It has good practical value and application prospects.

Description

Technical Field

[0001] This invention belongs to the field of ballastless track maintenance and construction technology, specifically relating to a casting mold suitable for the convex retaining platform inside a frame track slab and its usage method. Background Technology

[0002] With the continuous advancement of infrastructure construction and the continuous development of rail transit in my country, ballastless track has been widely used and developed due to its high stability, high smoothness, high durability and low maintenance, and the laying length has been increasing year by year.

[0003] Among existing ballastless tracks, the CRTSⅠ type slab track is a common and widely used type. It mainly consists of rails, fasteners, precast track slabs, CA mortar adjustment layer, concrete foundation, and convex retaining walls. Figure 9 As shown in the diagram. Based on structural characteristics, the track slab is divided into flat slabs and frame slabs. The frame slab has a hollowed-out center, forming a rectangular through-hole with rounded corners or a 45-degree bevel, to reduce concrete pouring and save costs. Simultaneously, each end of the track slab has a semi-circular notch for longitudinal and lateral restraint in conjunction with convex retaining blocks and their resin. The convex retaining blocks are available in circular and semi-circular shapes, typically with a radius of 260mm and a height of 250mm. Furthermore, the base has discontinuous expansion joints at regular intervals. At beam joints, road-bridge junctions, road-tunnel junctions, and bridge-tunnel transition sections, the base is laterally discontinuous, and the convex retaining blocks are semi-circular. In the middle of the roadbed, bridge, and tunnel, the expansion joints extend forward along the convex retaining blocks in the direction of travel, and the convex retaining blocks are circular. The convex retaining blocks are placed on the top surface of the base and connected to it via pre-embedded steel bars. To mitigate the stress on the convex retaining blocks, a 4cm thick polyurethane resin elastic layer is typically installed around them.

[0004] In theory, during the application of ballastless track, when the track slab is subjected to various forces or undergoes expansion and contraction, longitudinal or lateral displacement may occur. In such cases, convex retainers can limit the displacement of the track slab, maintaining the integrity, smoothness, and stability of the ballastless track. However, in reality, due to factors such as construction quality and the natural environment, convex retainers, especially those at beam joints, are highly susceptible to damage. Furthermore, the working space at these retainers is extremely limited, making complete repair very difficult. Conventional repair methods often require moving the track slab, resulting in a very cumbersome repair process and significantly impacting the normal use of the track structure, thus severely limiting its application. Summary of the Invention

[0005] In response to one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a casting mold and its method for using a convex retaining wall in a frame track slab. This mold can be used to construct a new convex retaining wall in the hollow area in the middle of the track slab, effectively achieving reliable positioning of the track slab after the original convex retaining wall is damaged, and ensuring the stability, smoothness and operational safety of the ballastless track.

[0006] To achieve the above objectives, one aspect of the present invention provides a casting mold suitable for a convex abutment in a frame track slab, comprising at least two splicing units, wherein the at least two splicing units are sequentially spliced ​​at their ends to form a rounded rectangular frame structure.

[0007] The splicing unit has a plate-like structure, and a transverse support rib is provided on one side of the top of the frame structure along the thickness direction of the plate; and the two ends of the transverse support rib are respectively spaced at a certain distance from the end of the splicing unit, and a first connecting hole is provided at both ends of the transverse support rib.

[0008] A connecting component is provided for splicing the ends of the two splicing units; the connecting component includes a connecting rod in the shape of a T, which is formed by connecting a horizontal bar and a vertical bar; the two ends of the horizontal bar are respectively provided with second connecting holes, and connecting parts are provided therecorrespondingly; then, after the two splicing units are spliced ​​at the ends, a notch is formed between the two horizontal support ribs at the top for the vertical bar to pass through, and the two second connecting holes are respectively vertically aligned with the first connecting holes at the ends of the two splicing units, so that the connecting parts can pass through the two vertically aligned connecting holes in sequence and the two splicing units are spliced ​​by the connecting rod.

[0009] As a further improvement of the present invention, the splicing unit includes a pair of first splicing units and a pair of second splicing units;

[0010] The first splicing unit and the second splicing unit are respectively L-shaped, such that when the casting mold is spliced, the two ends of the first splicing unit are respectively spliced ​​to the ends of the two second splicing units, and the two ends of the second splicing unit are respectively spliced ​​to the ends of the two first splicing units.

[0011] As a further improvement of the present invention, the splicing unit is formed by bending a rectangular steel plate.

[0012] As a further improvement of the present invention, the splicing unit is provided with a transverse support rib protruding outward along the thickness direction of the plate on one side of the bottom of the frame structure. The two ends of the transverse support rib are respectively flush with the two ends of the splicing unit, so that when the two splicing units are spliced, the two transverse support ribs located at the bottom of the splicing unit can be spliced ​​at the ends.

[0013] As a further improvement of the present invention, there are two splicing units, and the two splicing units are respectively U-shaped.

[0014] As a further improvement of the present invention, the connector is a cylindrical pin whose end is fixed in the second connecting hole at both ends of the crossbar, and the bottom of the cylindrical pin protrudes from the bottom surface of the crossbar.

[0015] As a further improvement of the present invention, the width of the transverse support rib is 20-40 mm.

[0016] As a further improvement of the present invention, connecting pin holes are respectively provided on the outer peripheral wall surface at both ends of the splicing unit, and connecting pins are provided in pairs at the bottom of the vertical rod, so that when the two splicing units are spliced ​​at the ends, the two connecting pins at the bottom of the vertical rod can be inserted into the connecting pin holes at the ends of the two splicing units respectively.

[0017] As a further improvement of the present invention, the connecting pin hole is formed by a nut disposed on the outer peripheral wall of the splicing unit.

[0018] Another aspect of the present invention provides a method for using a casting mold suitable for a convex retaining platform inside a frame track slab, comprising the following steps:

[0019] (1) Clean the top surface of the base opposite the hollow area in the middle of the frame track plate, and drill holes and plant reinforcement bars and tie the convex retaining plate reinforcement bars on the top surface of the base.

[0020] (2) The splicing units are spliced ​​sequentially to form a casting mold with a rounded rectangular structure;

[0021] (3) Place the assembled casting mold into the hollow central area, adjust the position of the casting mold and fix the casting mold;

[0022] (4) Pour concrete into the casting mold. After the concrete reaches a certain strength, remove the mold and complete the casting of the convex abutment inside the frame track plate.

[0023] The aforementioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0024] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include:

[0025] (1) The casting mold of the present invention for the convex abutment in the frame track slab can quickly form a rounded rectangular frame structure by setting at least two splicing units and corresponding connecting components, and by utilizing the corresponding setting of the transverse support ribs on the splicing units and the connecting rods and connecting parts in the connecting components. Then, the casting mold for the convex abutment is formed in the groove in the middle of the frame track slab, and the casting of the convex abutment in the hollow area in the middle of the frame track slab is quickly completed. This simplifies the inspection and maintenance process of ballastless track with frame track slab, improves the efficiency of ballastless track inspection and maintenance, and ensures the stability of ballastless track and the normal operation of high-speed rail.

[0026] (2) The casting mold of the present invention for the convex baffle in the frame track plate can effectively realize the connection of the connecting components by correspondingly setting the horizontal support ribs on the upper and lower sides of the splicing unit, and ensure the structural strength of the splicing unit, avoid deformation or damage of the splicing unit during use, and thus ensure the reliability of the convex baffle forming device.

[0027] (3) The casting mold of the present invention for the convex abutment in the frame track slab has a pair of connecting pins set at the bottom of the vertical rod in the connecting rod, and connecting pin holes are set on the outer peripheral wall at both ends of the splicing unit. When two adjacent splicing units are spliced, the splicing of the splicing units can be quickly realized by matching the two connecting parts at both ends of the horizontal rod with the first connecting holes at the ends of the two transverse support ribs, and matching the two connecting pins at the bottom of the vertical rod with the two connecting pin holes at the ends of the two splicing units. The connecting rod can be quickly pulled out after the convex abutment is cast, thereby quickly disassembling the splicing of the splicing unit and completing the demolding process. This further improves the efficiency of casting the convex abutment in the frame track slab through the casting mold, shortens the forming time of the convex abutment, reduces the dependence of the forming process of the convex abutment on the time window, and ensures the stability of the ballastless track and the normal operation of the high-speed rail.

[0028] (4) The casting mold of the present invention is applicable to the convex baffle in the frame track plate. It has a simple structure and is easy to assemble. It can cast and form the convex baffle in the hollow area in the middle of the frame track plate, quickly solve the limiting problem caused by the damage of the convex baffle at both ends of the frame track plate, ensure the stability of the frame track plate and the reliability of its application, simplify the inspection and maintenance process of ballastless track with frame track plate, and has good practical value and application prospects. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the casting mold structure applicable to the convex baffle inside the frame track plate in an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of the convex retaining plate casting mold without the connecting components installed in an embodiment of the present invention;

[0032] Figure 3 , Figure 4 This is a schematic diagram of the connecting component structure of the convex baffle casting mold in an embodiment of the present invention;

[0033] Figure 5 , Figure 6 This is a front view of the structure of the convex baffle casting mold after assembly in an embodiment of the present invention;

[0034] Figure 7 , Figure 8 This is a side view of the structure of the convex baffle casting mold after assembly in an embodiment of the present invention;

[0035] Figure 9 This is a schematic diagram of a ballastless track structure with a frame track slab in an embodiment of the present invention;

[0036] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0037] 1. First splicing unit; 2. Second splicing unit; 3. Horizontal support rib; 4. Connector; 5. Connecting pin hole; 6. Connecting rod; 601. Handle; 602. Connecting pin. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0039] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this 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 this invention.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] Example:

[0044] Please see Figures 1-2 In a preferred embodiment of the present invention, the casting mold for the convex abutment inside the frame track slab has a rounded rectangular structure, which is preferably assembled from multiple splicing units connected by connecting components, and is used for... Figure 9 The frame track plate shown is formed by casting a limiting convex baffle in the hollow area in the middle.

[0045] In a preferred embodiment, the frame track slab is a CRTSⅠ type frame track slab. This track slab has a rounded rectangular hollow area in its center to reduce the amount of concrete poured, thereby lowering project costs. Typically, semi-circular grooves are formed at both ends of the track slab's longitudinal direction to engage with convex retainers on the concrete foundation, thus limiting the track slab's position. When the convex retainers (circular or semi-circular) are damaged, the track slab's position cannot be guaranteed, necessitating repair work. To avoid extensive construction across the entire ballastless track area, it is preferable to install reinforcing bars and pour new convex retainers within the rounded rectangular area of ​​the frame track slab to limit the track slab's position. Since there is usually only a narrow gap of 4cm wide and 24cm deep between the newly installed convex retainer and the track slab, a special pouring mold suitable for confined spaces and easy to install and dismantle is proposed in the preferred embodiment.

[0046] Specifically, in the preferred embodiment, the convex abutment casting mold has a rounded rectangular frame structure, which includes multiple splicing units with plate-like structures. In the preferred embodiment, the splicing unit includes a pair of first splicing units 1 and a pair of second splicing units 2. Each splicing unit has an "L" shape, and rounded corners are provided at the corners of the two folds of the L-shaped structure to achieve a rounded transition between the two folds.

[0047] In actual setup, the first splicing unit 1 and the second splicing unit 2 are symmetrically arranged, and the two ends of the first splicing unit 1 are respectively connected to the ends of the two second splicing units 2. Similarly, the two ends of the second splicing unit 2 are respectively connected to the ends of the two first splicing units 1. Through the connection of two pairs (4 units) of connecting components, a structure is formed as follows: Figure 1 The rounded rectangle structure shown.

[0048] More specifically, in the preferred embodiment, the splicing unit is formed by bending a rectangular steel plate, and transverse support ribs 3 are welded to the upper and lower sides of the rectangular steel plate, namely the top support rib and the bottom support rib. In actual installation, one side of the transverse support rib 3 is welded to the rectangular steel plate, and the other side extends outward along the thickness direction of the rectangular steel plate and protrudes from the outer peripheral wall of the rectangular steel plate.

[0049] Meanwhile, the two ends of the bottom support ribs preferably extend to and are flush with the ends of the rectangular steel plate, while the two ends of the top support ribs are spaced a certain distance from the ends of the rectangular steel plate. This creates a gap between adjacent top support ribs after the two splicing units are spliced ​​at the ends, allowing for the passage and installation of connecting components. Figure 2 As shown in the figure. In addition, corresponding to the installation of the connecting components, first connecting holes are respectively provided at both ends of the transverse support rib 3 located at the top of the splicing unit for subsequent connection of the connecting components.

[0050] In actual installation, the width of the transverse support ribs 3 is preferably 20-40mm. After the splicing of the splicing units is completed, the outer contour dimension of the rounded rectangle formed by each transverse support rib 3 is preferably the same as the dimension of the rounded rectangle groove area in the middle of the frame track plate. By setting the upper and lower transverse support ribs 3 separately, the overall rigidity of the splicing unit can be effectively improved, and deformation during concrete pouring can be avoided.

[0051] In the aforementioned preferred embodiment, the splicing units are a pair of first splicing units 1 and a pair of second splicing units 2. Obviously, depending on the actual setup requirements, the rounded rectangular mold can be decomposed into different numbers and forms of splicing units. For example, in a preferred embodiment, the casting mold includes two "U-shaped" splicing units. In this case, it is equivalent to prefabricating the first splicing unit 1 and the second splicing unit 2 into "U-shaped" splicing units, and then forming a shape like... Figure 1 The rounded rectangular mold shown.

[0052] Furthermore, in the preferred embodiment, the connection component is as follows: Figure 3 , Figure 4 As shown, it includes a T-shaped connecting rod 6, which consists of a horizontal bar and a vertical bar connected to the middle of the horizontal bar, with second connecting holes at both ends of the horizontal bar. When the first splicing unit 1 and the second splicing unit 2 are spliced ​​at their ends, a gap is formed between the two top support ribs. At this time, the vertical bar of the connecting rod 6 passes through the gap between the two top support ribs, and the two ends of the horizontal bar rest on the ends of the two adjacent top support ribs. Correspondingly, the first connecting hole and the second connecting hole are coaxially aligned. By setting the connector 4 to pass through the second connecting hole and the first connecting hole in sequence, the connection between the connecting component and the horizontal support rib 3 can be realized, thereby realizing the connection of the top of the two splicing units.

[0053] In a preferred embodiment, the connector 4 is preferably a corresponding cylindrical pin.

[0054] Furthermore, to achieve the connection at the bottom of adjacent splicing units, in a preferred embodiment, a connecting pin hole 5 is provided on the outer peripheral wall surface of each splicing unit end. This connecting pin hole 5 is located near the bottom of the splicing unit and is preferably formed by a nut welded to the outer peripheral wall surface of the splicing unit, with the axis of the nut parallel to the outer peripheral wall surface of the splicing unit. Correspondingly, connecting pins 602 are provided in pairs at the bottom of the vertical rod, such as... Figure 4 As shown in the image.

[0055] Thus, when connecting the connecting rods 6, the two ends of the horizontal rod rest on the ends of the top supporting ribs, and the vertical rod extends downwards, with two connecting pins 602 respectively embedded in the connecting pin holes 5 located at the ends of the two splicing units, thereby achieving the connection of the bottom of the two splicing units, as shown below. Figures 5-8 As shown in the image.

[0056] Preferably, to facilitate the placement and disassembly of the mold, a handle 601 is provided at the top of at least part of the connecting rod 6, such as... Figure 3 As shown in the image.

[0057] By sequentially assembling multiple splicing units, the casting mold can be set up to form a frame mold with a rounded rectangular structure.

[0058] Using the aforementioned casting mold, the casting of the convex retaining wall within the rounded rectangular groove area in the middle of the frame track slab can be completed. The preferred construction method (method of using the casting mold) is as follows:

[0059] (1) Clean the impurities on the top surface of the base directly opposite the hollow area in the middle of the frame track plate, and drill holes and install reinforcing bars and tie the convex retaining plate reinforcing bars on the concrete foundation (base) corresponding to the hollow area in the middle.

[0060] (2) The splicing units are spliced ​​sequentially to form a casting mold with a rounded rectangular structure;

[0061] Specifically, by using the first splicing unit 1 and the second splicing unit 2... Figure 1 The components are connected end to end in sequence, and a pair of connectors 4 are used to connect the two ends of the horizontal bar of the connecting rod 6 to the two top support plates. The two connecting pins 602 are matched with the two connecting pin holes 5 to connect the bottom of the vertical bar of the connecting rod 6 to the two splicing units.

[0062] (3) By holding the handle 601 on the connecting rod 6, place the spliced ​​casting mold into the hollow area in the middle of the frame track plate, and adjust and fix the position of the casting mold accordingly;

[0063] In actual setup, the planar position of the casting mold is adjusted by planar movement so that the outer edge of the horizontal support rib 3 of the mold is equidistant from the inner wall of the rounded rectangular hollow area; correspondingly, wooden wedges are used to fix the mold in planar position, and steel rails and wooden strips are used to fix the mold vertically.

[0064] (4) Pour concrete into the casting mold. After the concrete reaches a certain strength, remove the wooden strips, wooden wedges and other fixing parts, and pull out the connecting rod 6. Then remove the mold and complete the casting of the convex platform.

[0065] The casting mold for the convex retaining wall in the frame track slab of this invention has a simple structure and is easy to assemble. It can cast and form the convex retaining wall in the hollow area in the middle of the frame track slab, quickly solve the limiting problem caused by the damage of the convex retaining wall at both ends of the frame track slab, ensure the stability of the frame track slab and the reliability of its application, and simplify the inspection and maintenance process of ballastless track with frame track slab. It has good practical value and application prospects.

[0066] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A casting mold suitable for the convex retaining platform inside a frame track slab, characterized in that, It includes at least two splicing units, and the at least two splicing units are spliced ​​together at the ends in sequence to form a rounded rectangular frame structure; The splicing unit has a plate-like structure. On one side corresponding to the top of the frame structure, a transverse support rib protrudes outward along the thickness direction of the plate. The two ends of the transverse support rib are spaced a certain distance from the ends of the splicing unit, and a first connecting hole is opened at each end of the transverse support rib. On one side corresponding to the bottom of the frame structure, a transverse support rib protrudes outward along the thickness direction of the plate. The two ends of the transverse support rib are flush with the two ends of the splicing unit, so that when the two splicing units are spliced, the two transverse support ribs at the bottom of the splicing unit can be spliced ​​at their ends. The width of the transverse support rib is 20~40mm. After the splicing of the splicing unit is completed, the outer contour dimension of the rounded rectangle formed by each transverse support rib is the same as the dimension of the rounded rectangle groove area in the middle of the frame track plate. A connecting component is provided for splicing the ends of the two splicing units; the connecting component includes a connecting rod in the shape of a T, which is formed by connecting a horizontal bar and a vertical bar; the two ends of the horizontal bar are respectively provided with second connecting holes, and connecting pieces are provided therecorrespondingly; then, after the two splicing units are spliced ​​at the ends, a notch is formed between the two horizontal support ribs at the top for the vertical bar to pass through, and the two second connecting holes are respectively vertically aligned with the first connecting holes at the ends of the two splicing units, so that the connecting pieces can pass through the two vertically aligned connecting holes in sequence and the two splicing units are spliced ​​by the connecting rod; Connecting pin holes are provided on the outer peripheral walls at both ends of the splicing unit, and connecting pins are provided in pairs at the bottom of the vertical rod, so that when the two splicing units are spliced ​​at the ends, the two connecting pins at the bottom of the vertical rod can be inserted into the connecting pin holes at the ends of the two splicing units respectively.

2. The casting mold for the convex retaining platform inside a frame track slab according to claim 1, characterized in that, The splicing unit includes a pair of first splicing units and a pair of second splicing units; The first splicing unit and the second splicing unit are respectively L-shaped, such that when the casting mold is spliced, the two ends of the first splicing unit are respectively spliced ​​to the ends of the two second splicing units, and the two ends of the second splicing unit are respectively spliced ​​to the ends of the two first splicing units.

3. The casting mold for the convex retaining platform inside a frame track slab according to claim 2, characterized in that, The splicing unit is formed by bending a rectangular steel plate.

4. The casting mold for the convex retaining platform inside a frame track slab according to claim 1, characterized in that, There are two splicing units, and each splicing unit has a U-shaped structure.

5. The casting mold for the convex retaining wall inside a frame track slab according to any one of claims 1 to 4, characterized in that, The connector is a cylindrical pin whose end is fixed in the second connecting hole at both ends of the crossbar, and the bottom of the cylindrical pin protrudes from the bottom surface of the crossbar.

6. The casting mold for the convex retaining platform inside a frame track slab according to any one of claims 1 to 4, characterized in that, The connecting pin hole is formed by a nut disposed on the outer peripheral wall of the splicing unit.

7. The method of using the casting mold for the convex retaining wall inside the frame track slab as described in any one of claims 1 to 6, characterized in that, Includes the following steps: (1) Clean the top surface of the base opposite the hollow area in the middle of the frame track plate, and drill holes on the top surface of the base to install reinforcing bars and tie the convex retaining plate reinforcing bars. (2) Assemble each splicing unit sequentially to form a casting mold with a rounded rectangular structure; (3) Place the assembled casting mold into the hollow central area, adjust the position of the casting mold and fix the casting mold; (4) Pour concrete into the casting mold. After the concrete reaches a certain strength, remove the mold and complete the casting of the convex abutment inside the frame track plate.

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