A cast-in-place running track

Abstract

This utility model discloses a cast-in-place running track, which consists of a base layer composed of several prefabricated concrete modules connected end-to-end. During the pre-construction process, the concrete modules can be cast in a factory using molds. These factory-cured modules can then be directly transported to the site for installation. Each concrete module has a gap between its first end along its length and the placement plane, and a protrusion at its second end. When two adjacent modules are connected, the protrusion of one module embeds into the gap between the other module and the placement plane, ensuring a stable connection of the base layer. This modular design allows for rapid assembly of the runway base layer, significantly reducing on-site construction time, minimizing dependence on environmental conditions, and improving construction efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of track technology, and in particular to a cast-in-place track. Background Technology

[0002] Running tracks are an essential component of sports facilities, providing a specialized surface for running, jumping, and other track and field activities. Traditionally, two main construction methods have been used in the field of running track technology: cast-in-place tracks and precast tracks. Precast tracks involve the track's synthetic layer being prefabricated in sections off-site, then transported to the site for assembly and bonding, thus reducing on-site construction time. However, the synthetic layer that makes up the track is not integrally formed with the site but is glued to the ground using adhesives made of materials such as polyurethane, which makes it prone to separating from the ground after a period of use; the lifespan of the track's synthetic layer is also relatively short. Therefore, to ensure the lifespan of the running track, cast-in-place tracks are currently the more commonly used method.

[0003] Cast-in-place running tracks are constructed by directly pouring concrete or similar materials onto the track site to create the base layer. The synthetic layer is then poured on-site after the base layer has solidified. The advantage of cast-in-place tracks is that the synthetic layer adheres tightly to the base layer after pouring, preventing it from peeling off in pieces. However, cast-in-place tracks also have significant disadvantages. The construction process involves compacting the soil layer, laying a gravel layer, pouring concrete, and finally pouring the synthetic layer on top of the concrete. The concrete solidification and hardening process takes a considerable amount of time, and the pouring of outdoor tracks is also affected by environmental factors such as temperature and humidity. Overall, the construction time for the track is long. Utility Model Content

[0004] The main purpose of this invention is to propose a cast-in-place running track, which aims to solve the technical problem of long construction time for cast-in-place running tracks in the prior art.

[0005] To achieve the above objectives, this utility model proposes a cast-in-place running track, comprising a plastic layer and a base layer. The base layer is composed of several concrete modules connected end to end, and the plastic layer is located within the molding space formed by the top surfaces of the concrete modules. The first end of the concrete module in the length direction has a gap with the placement plane, and the second end is provided with a protrusion that extends beyond the end face of the concrete module. When two adjacent concrete modules are connected to each other, the protrusion of one concrete module is embedded in the gap between the other concrete module and the placement plane.

[0006] Optionally, the first end of the concrete module is provided with a first wedge-shaped surface, and the protrusion is provided with a second wedge-shaped surface; when the protrusion is embedded in the space between another concrete module and the placement plane, the second wedge-shaped surface fits into the first wedge-shaped surface of the adjacent concrete module.

[0007] Optionally, a casting groove is provided on the upper surface of the concrete module, and the casting groove extends through both ends of the top surface of the concrete module; wherein, the casting grooves on several concrete modules are interconnected to form a molding space for containing liquid plastic, so that the plastic layer of the track is integrally formed within the molding space; the plastic layer and the base layer together constitute the track.

[0008] Optionally, the bottom of the sidewall of the casting trough is recessed to form a limiting groove, which is connected to the casting trough.

[0009] Optionally, limit grooves are formed on both sides of the casting trough.

[0010] Alternatively, the casting trough has outer side walls and inner side walls on both sides; the outer side walls are located on the outer side of the runway, and the inner side walls are located on the inner side of the runway; a drainage trough is provided on the outer side of the runway, and the drainage trough is lower than the upper surface of the runway; an inclined guide surface is provided on the top of the outer side wall, which is used to guide rainwater to flow to the drainage trough.

[0011] Optionally, there may be a gap between the end faces of adjacent concrete modules so that the plastic layer is partially embedded into the base layer during molding.

[0012] Alternatively, the width of the concrete module can be gradually reduced from top to bottom.

[0013] This utility model discloses a cast-in-place running track, which consists of a base layer composed of several prefabricated concrete modules connected end to end. During track construction, the concrete modules are pre-cast in a factory while the soil and gravel layers are being compacted. This ensures that the concrete modules have already solidified by the time the soil and gravel layers are laid. Grooves for installing the concrete modules are pre-reserved during the soil and gravel layer laying process. After the soil and gravel layers are laid on-site, the factory-solidified concrete modules can be directly transported to the site for installation. After the concrete modules are assembled, the material forming the plastic layer is poured into the space formed by the top surfaces of the concrete modules. A gap exists between the first end of each concrete module along its length and the placement plane, while a protrusion is provided at the second end. When two adjacent concrete modules are connected, the protrusion of one module embeds into the gap between the other module and the placement plane, ensuring a stable connection of the base layer, providing a solid foundation for the plastic layer, and enhancing the overall stability and durability of the running track. The modular design of this invention enables the rapid assembly of the runway base layer, significantly reducing on-site construction time, while also reducing dependence on environmental conditions and improving construction efficiency and quality. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of an in-situ cast-in-place running track according to this utility model;

[0016] Figure 2 This is a top view of the matrix layer;

[0017] Figure 3 for Figure 2 Schematic diagram of the cross section of AA;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the concrete module;

[0019] Figure 5 This is a front view of the concrete module;

[0020] Figure 6 This is a left-side view of the concrete module.

[0021] Figure 7 This is a top view of the concrete module;

[0022] Figure 8 for Figure 4 Enlarged view of region B in the middle;

[0023] Figure 9 This is a front view schematic diagram of another embodiment of the concrete module.

[0024] Explanation of icon numbers:

[0025] 1. Concrete module; 11. First wedge-shaped surface; 12. Protrusion; 121. Second wedge-shaped surface; 13. Pouring groove; 131. Limiting groove; 14. Inner wall; 15. Outer wall; 151. Guide surface; 2. Drainage groove; 3. Molding space.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, provided that they are feasible for those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] This utility model proposes a cast-in-place running track.

[0031] In the embodiments of this utility model, such as Figures 1-8 As shown, a cast-in-place running track includes a plastic layer and a base layer. The base layer is composed of several concrete modules 1 connected end to end. The plastic layer is located in the molding space 3 formed by the top surfaces of the concrete modules 1. The first end of the concrete module 1 in the length direction has a gap with the placement plane, and the second end is provided with a protrusion 12 that protrudes beyond the end face of the concrete module 1. When two adjacent concrete modules 1 are connected to each other, the protrusion 12 of one concrete module 1 is embedded in the gap between the other concrete module 1 and the placement plane.

[0032] Specifically, the runway's base layer is composed of several prefabricated concrete modules 1 connected end-to-end. During runway construction, the concrete modules 1 can be pre-cast in the factory simultaneously with the compaction of the soil layer and the laying of the gravel layer. This ensures that the concrete modules 1 have already solidified by the time the soil and gravel layers are laid. Furthermore, installation grooves for the concrete modules 1 are pre-drilled during the laying of the soil and gravel layers. After the soil and gravel layers are laid on-site, the factory-solidified concrete modules 1 can be directly transported to the site for installation. After the concrete modules 1 are assembled, the material constituting the plastic layer is poured into the molding space 3 formed by the top surfaces of several concrete modules 1. A gap exists between the first end of the concrete module 1 along its length and the placement plane, and a protrusion 12 is provided at the second end of the concrete module 1 along its length. When two adjacent concrete modules 1 are connected, the protrusion 12 of one concrete module 1 is embedded into the gap between the other concrete module 1 and the placement plane, thereby ensuring a stable connection of the base layer, providing a solid foundation for the plastic layer, and enhancing the overall stability and durability of the track. This modular design allows for rapid assembly of the track base layer, significantly reducing on-site construction time, while also reducing dependence on environmental conditions and improving construction efficiency and quality.

[0033] Correspondingly, the concrete modules 1 in the semi-circular areas at both ends of the runway have curvature, and multiple concrete modules 1 with a certain curvature together constitute the semi-circular area of ​​the runway.

[0034] Optionally, the first end of the concrete module 1 is provided with a first wedge-shaped surface 11, and the protrusion 12 is provided with a second wedge-shaped surface 121; when the protrusion 12 is embedded in the space between another concrete module 1 and the placement plane, the second wedge-shaped surface 121 fits against the first wedge-shaped surface 11 of the adjacent concrete module 1.

[0035] Specifically, the first wedge-shaped surface 11 and the second wedge-shaped surface 121 of the concrete module 1 have the same inclination. The first wedge-shaped surface 11 guides the installation of adjacent concrete modules 1. After one concrete module 1 is installed, the protrusion 12 of the adjacent concrete module 1 can be placed along the first wedge-shaped surface 11 into the space between the first wedge-shaped surface 11 and the placement plane, simplifying the installation process. During installation, construction workers only need to align the wedge-shaped surfaces to quickly complete the embedding, improving on-site assembly efficiency.

[0036] Optionally, a pouring groove 13 is provided on the upper surface of the concrete module 1, and the pouring groove 13 extends through both ends of the top surface of the concrete module 1; wherein, the pouring grooves 13 on several concrete modules 1 are interconnected and form a molding space 3 for containing liquid plastic, so that the plastic layer of the runway is integrally formed within the molding space 3.

[0037] Specifically, the casting groove 13 is recessed below the top surface of the concrete module 1. This allows the plastic layer to be partially embedded in the substrate layer after molding, providing a larger adhesion area between the plastic layer and the substrate layer. Consequently, the connection between the plastic layer and the substrate layer is tighter, making it less likely for the plastic layer to separate from the substrate layer. At the same time, the partial embedding of the plastic layer within the molding space 3 formed by the casting groove 13 also restricts the width direction of the plastic layer, preventing it from detaching from the substrate layer in that direction.

[0038] Optionally, a limiting groove 131 is formed by a recess at the bottom of the side wall of the casting groove 13, and the limiting groove 131 is connected to the casting groove 13.

[0039] Specifically, the limiting groove 131, as an extension structure at the bottom of the side wall of the casting tank 13, is integrally formed with the casting tank 13. When liquid plastic is poured into the casting tank 13, the plastic material naturally flows into the limiting groove 131, forming an embedded structure, thereby achieving a tight bond between the plastic layer and the substrate layer. By adding a limiting groove 131 at the bottom of the side wall of the casting tank 13, the liquid plastic not only fills the casting tank 13 during pouring but also flows into the limiting groove 131, forming a limiting structure protruding into the limiting groove 131. This allows the plastic layer to prevent detachment from the substrate layer when the adhesive fails due to stress or temperature changes during use, thanks to the physical limitation of the protrusion into the limiting groove 131.

[0040] More specifically, when pouring concrete module 1, a pouring groove 13 with a limiting groove 131 is formed directly through a mold, or it is connected to the pouring groove 13 by cutting, digging or other means in subsequent processing.

[0041] In this embodiment, the plastic layer is made of water-based polyurethane and is formed by water-based polyurethane casting.

[0042] Preferably, limiting grooves 131 are formed on both sides of the casting groove 13, so that both sides of the bottom end of the plastic layer are embedded in the limiting grooves 131, thereby limiting the casting groove 13 on both sides at the same time, further ensuring the stability of the connection between the plastic layer and the substrate layer.

[0043] Optionally, the concrete module 1 includes an outer side wall 15 and an inner side wall 14; the outer side wall 15 is located on the outer side of the runway, and the inner side wall 14 is located on the inner side of the runway; a drainage ditch 2 is provided on the outer side of the runway, and the drainage ditch 2 is lower than the upper surface of the runway; an inclined guide surface 151 is provided on the top of the outer side wall 15, and the guide surface 151 is used to guide rainwater to flow to the drainage ditch 2.

[0044] Specifically, the height difference between the drainage ditch 2 and the running track can be achieved by reserving the depth of the installation groove when laying the gravel layer and soil layer. This ensures that after the concrete module is installed in the installation groove, the height of the top surface of the concrete module 1 is higher than the height of the groove opening of the drainage ditch 2, thus ensuring that the drainage ditch 2 is lower than the upper surface of the plastic layer of the running track, thereby forming an effective drainage path and preventing water from flowing backward or accumulating on the running track. This allows the running track to quickly drain water in rainy or humid environments, preventing the surface from becoming slippery or the plastic layer and base layer from being damaged due to long-term water immersion.

[0045] Optionally, there is a gap between the end faces of adjacent concrete modules 1 so that the plastic layer is partially embedded into the base layer during molding.

[0046] In this embodiment, a certain distance is reserved between adjacent concrete modules 1 during installation. Specifically, after the first wedge-shaped surface 11 and the second wedge-shaped surface 121 are pressed together, there is still a gap between the bottom walls of the pouring groove 13 of the two adjacent concrete modules 1. This allows the plastic material to flow into these gaps when liquid plastic is poured, and to form a physical bond with the substrate layer during the solidification process. After the plastic layer is formed, the plastic layer surface has several portions extending into the gaps, which fit into the end face of the concrete module 1, thereby enhancing the adhesion between the two layers and preventing separation during use.

[0047] In this embodiment, the main body of the concrete module 1 is a rectangular module, with the protrusion 12 and the first wedge-shaped surface 11 respectively located at both ends in the length direction. During installation, the bottom end of the concrete module 1 is placed in the bottom wall (i.e., the installation plane) of the mounting groove.

[0048] In another embodiment, such as Figure 9 As shown, the width of concrete module 1 gradually decreases from top to bottom.

[0049] Specifically, the width of the concrete module 1's cross-section in the vertical direction gradually decreases from top to bottom, forming a trapezoidal cross-section that is wider at the top and narrower at the bottom. Correspondingly, the cross-section of the reserved installation groove also exhibits a corresponding structure. The trapezoidal cross-section guides the installation of the concrete module 1, making it easier to align the concrete module 1 in the width direction during installation.

[0050] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A cast-in-place running track, characterized in that, include: Plastic layer; The base layer is composed of several concrete modules (1) connected end to end, and the plastic layer is located in the molding space formed by the top surfaces of the several concrete modules (1). The first end of the concrete module (1) in the length direction has a gap with the placement plane, and the second end is provided with a protrusion (12) that protrudes beyond the end face of the concrete module (1). When two adjacent concrete modules (1) are connected to each other, the protrusion (12) of one of the concrete modules (1) is embedded in the gap between the other concrete module (1) and the placement plane.

2. The cast-in-place running track as described in claim 1, characterized in that, The first end of the concrete module (1) is provided with a first wedge-shaped surface (11), and the protrusion (12) is provided with a second wedge-shaped surface (121). When the protrusion (12) is embedded in the space between another concrete module (1) and the placement plane, the second wedge surface (121) fits against the first wedge surface (11) of the adjacent concrete module (1).

3. A cast-in-place running track as described in claim 1, characterized in that, The concrete module (1) has a pouring groove (13) on its upper surface, and the pouring groove (13) extends through both ends of the top surface of the concrete module (1). Among them, the pouring grooves (13) on several concrete modules (1) are interconnected and form a molding space (3) for containing liquid plastic, so that the plastic layer of the track is integrally formed in the molding space (3); the plastic layer and the base layer together constitute the track.

4. A cast-in-place running track as described in claim 3, characterized in that, The bottom of the side wall of the casting trough (13) is recessed to form a limiting groove (131), which is connected to the casting trough (13).

5. A cast-in-place running track as described in claim 4, characterized in that, Limiting grooves (131) are formed on both sides of the casting groove (13).

6. A cast-in-place running track as described in claim 3, characterized in that, The casting trough (13) has an outer side wall (15) and an inner side wall (14) on both sides; the outer side wall (15) is located on the outside of the runway, and the inner side wall (14) is located on the inside of the runway. The outer side of the runway is provided with a drainage ditch (2), and the drainage ditch (2) is lower than the upper surface of the runway; the top of the outer wall (15) is provided with an inclined guide surface (151), which is used to guide rainwater to the drainage ditch (2).

7. A cast-in-place running track as described in claim 1, characterized in that, There is a gap between the end faces of adjacent concrete modules (1) so that the plastic layer is partially embedded into the base layer during molding.

8. A cast-in-place running track as described in claim 1, characterized in that, The width of the concrete module (1) gradually decreases from top to bottom.

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