Anti-skid and wear-resistant uhcp trestle plate

Abstract

The utility model discloses a kind of anti-skid wear-resistant UHPC trestle bridge plate, comprising: plate body;Wear layer is set in plate body top, and wear layer surface is provided with concave anti-skid line, so that anti-skid layer is formed on wear layer surface;Pipe body filling layer is set in plate body, including support frame and the several rigid plastic pipes that are set on support frame to reduce plate body deadweight and guarantee plate body structural strength along the length direction of plate body. By setting wear layer on plate body top, and setting concave anti-skid line on wear layer surface, the wear resistance and slip resistance of trestle bridge plate can be improved simultaneously by wear layer, wherein, the setting of concave anti-skid line has the characteristics of higher compressive strength with wear layer, can fully avoid anti-skid layer stress concentration, reduce the structural damage of anti-skid layer, fully guarantee the good anti-skid performance in the use process of trestle bridge plate, and by setting pipe body filling layer inside trestle bridge plate, the structural strength of trestle bridge plate can be guaranteed while reducing the deadweight of trestle bridge plate.

Description

Technical Field

[0001] This utility model relates to the field of building structural panels, and in particular to a non-slip and wear-resistant UHPC bridge board. Background Technology

[0002] Bridge decks are a new type of building component that integrates load-bearing, heat insulation, and waterproofing functions. The design life of the component is 50 years. When designing the structure, the static action, dynamic action, load action, variable load and accidental load action of the component must be considered. It is widely used in a variety of building applications such as large factories, civil buildings, light rail transit, coal mine bridges and so on.

[0003] Traditional trestle decks are mostly made of ordinary concrete or steel plates. All-steel trestle decks are expensive and have the problem of difficult corrosion prevention. Therefore, concrete trestle decks are currently more commonly used. However, existing concrete trestle decks have poor wear resistance, resulting in a relatively short service life. In addition, the anti-slip effect of concrete trestle decks is also poor. Furthermore, trestle decks made of concrete are also heavy, which causes inconvenience in transportation, installation and use.

[0004] In view of this, it is necessary to design a non-slip and wear-resistant UHPC bridge plate to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a UHPC trestle with good wear resistance and anti-slip properties, which can reduce the weight of the trestle to a certain extent while ensuring the structural strength of the trestle.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A non-slip and wear-resistant UHPC bridge board, comprising: plate body; A wear-resistant layer is provided on the top of the plate, and the surface of the wear-resistant layer is provided with concave anti-slip texture, so that an anti-slip layer is formed on the surface of the wear-resistant layer. The tube filling layer, disposed within the plate, includes a support frame and several rigid plastic tubes spaced apart along the length of the plate on the support frame to reduce the weight of the plate and ensure the structural strength of the plate.

[0007] As a further improvement of this utility model, the tube filling layer is located in the middle of the plate along the height direction.

[0008] As a further improvement of this utility model, the wear-resistant layer is a structural layer formed by corundum and ultra-high performance concrete (UHPC).

[0009] As a further improvement of this utility model, the thickness of the wear-resistant layer is 8-12mm; the depth of the concave anti-slip texture is 1-3mm.

[0010] As a further improvement of this utility model, the concave anti-slip texture includes polygonal pits that are evenly spaced along the length and width of the plate.

[0011] As a further improvement of this utility model, the polygonal recess is a regular hexagon with a side length of 4-6mm, and the center-to-center distance between adjacent regular hexagons is 10-14mm.

[0012] As a further improvement of this utility model, the support frame includes a plastic frame for placing rigid plastic pipes; steel mesh is also provided above and below the plastic frame.

[0013] As a further improvement of this utility model, the diameter of the rigid plastic tube is 15-25mm, and the distance between adjacent rigid plastic tubes is 55-65mm.

[0014] As a further improvement of this utility model, the rigid plastic pipe is a PVC pipe.

[0015] As a further improvement of this utility model, the edge of the plate is also provided with connecting holes to facilitate the connection of adjacent plates.

[0016] The beneficial effects of this utility model are: 1. This utility model improves the wear resistance and anti-slip properties of the trestle board by setting a wear-resistant layer on the top of the board and setting concave anti-slip texture on the surface of the wear-resistant layer. The concave anti-slip texture, combined with the high compressive strength of the wear-resistant layer, can effectively avoid stress concentration in the anti-slip layer, reduce structural damage to the anti-slip layer, and fully ensure good anti-slip performance of the trestle board during use.

[0017] 2. This utility model, by setting a tube filling layer inside the trestle plate, can reduce the weight of the trestle plate while ensuring its structural strength. Specifically, it can reduce the weight of the trestle plate by 5% while increasing its structural strength by 10%. Attached Figure Description

[0018] Figure 1 This is a top view of the anti-slip and wear-resistant UHPC bridge board of this utility model.

[0019] Figure 2 This is a sectional view at point AA.

[0020] Figure 3 This is a schematic diagram of a plastic frame.

[0021] Figure 4 This is a schematic diagram of the connection between adjacent plates.

[0022] Figure Labels 10. Panel; 20. Wear-resistant layer; 21. Concave anti-slip texture; 31. Plastic frame; 311. Placement point; 32. PVC pipe; 33. Steel mesh; 40. Connecting hole; 41. Bolt sleeve; 42. Washer; 43. Bolt; 44. Nut. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0025] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Please see Figures 1-4 As shown, this utility model provides a non-slip and wear-resistant UHPC bridge plate, comprising: plate body 10; A wear-resistant layer 20 is disposed on the top of the plate 10, and the surface of the wear-resistant layer 20 is provided with concave anti-slip texture 21, so that an anti-slip layer is formed on the surface of the wear-resistant layer 20. The tube filling layer is disposed inside the plate 10, including a support frame and a number of rigid plastic tubes that are spaced apart along the length of the plate 10 on the support frame to reduce the weight of the plate 10 and ensure the structural strength of the plate 10.

[0027] Specifically, along the height direction, the tube filling layer is located in the middle of the plate 10.

[0028] Specifically, the wear-resistant layer 20 is a structural layer formed from corundum and ultra-high performance concrete (UHPC). For example, the proportion of corundum in the wear-resistant layer 20 is 40 wt%, and the wear-resistant layer 20 is integrally cured with the plate 10 through a reverse molding process.

[0029] The wear-resistant layer 20 has a thickness of 8-12mm; the concave anti-slip texture 21 has a depth of 1-3mm.

[0030] Specifically, the concave anti-slip texture 21 includes polygonal recesses that are evenly spaced along the length and width of the plate 10. Compared with conventional elongated recesses that are parallel to the width or length of the plate 10, the polygonal recesses that are evenly spaced in this example have a better anti-slip effect.

[0031] By setting concave anti-slip textures 21 on the surface of the wear-resistant layer 20, an integrated anti-slip layer is formed on the surface of the wear-resistant layer 20, which can improve the anti-slip effect of the board. At the same time, compared with convex textures, concave textures have relatively less wear resistance. Moreover, the concave textures are located on the wear-resistant layer 20, and can rely on the excellent wear resistance of the wear-resistant layer 20 to effectively maintain the continuous anti-slip effect of the concave textures and improve the service life of the anti-slip layer.

[0032] For example, the polygonal pits are regular hexagons with a side length of 4-6 mm, and the center-to-center distance between adjacent regular hexagons is 10-14 mm. Compared with triangular and quadrilateral shapes, regular hexagons have the highest tiling efficiency, maximizing the number of pits per unit area to increase the frictional contact area. In addition, regular hexagons have a better stress dispersion effect, avoiding stress concentration at the corners.

[0033] Specifically, the support frame includes a plastic frame 31 for housing rigid plastic pipes, and steel mesh 33 is respectively provided above and below the plastic frame 31. Figure 3 As shown, the plastic frame 31 is a quadrilateral frame, and several placement points 311 for placing rigid plastic tubes are provided at intervals on the frame.

[0034] For example, the diameter of the rigid plastic tube is 15-25mm, and the spacing between adjacent rigid plastic tubes is 55-65mm. By limiting the diameter of the rigid plastic tube and the spacing between adjacent rigid plastic tubes, it is possible to avoid the poor self-weight effect of the tube filling layer due to the diameter of the rigid plastic tube being too small, and to avoid the reduction of the load-bearing capacity of the tube filling layer due to the diameter being too large, such as exceeding 25mm. In addition, it is possible to avoid the increase in material cost and self-weight of the tube filling layer due to the spacing between adjacent rigid plastic tubes being too small, and to avoid the decrease in strength due to the high cavity ratio of the tube filling layer due to the spacing being too large.

[0035] For example, the rigid plastic pipe is PVC pipe 32.

[0036] In this example, the slab 10 is cast using ultra-high performance concrete, and the length, width, and height of the slab 10 are 8000mm, 2000mm, and 80mm, respectively. The wear-resistant layer 20 is 10mm thick, and the concave anti-slip texture 21 is a regular hexagon with a side length of 5mm and a depth of 1mm. The center-to-center distance between adjacent regular hexagons is 12mm. The wet friction coefficient of the anti-slip layer in this example is 0.85 as obtained by ASTM E303 testing, which means that the anti-slip layer in this example has good anti-slip performance. The distance between the top surface of the pipe filling layer and the bottom surface of the wear-resistant layer 20 is 25mm, the distance between the bottom surface of the pipe filling layer and the bottom surface of the plate 10 is 15mm, the diameter of the PVC pipe 32 is 20mm, the distance between adjacent PVC pipes 32 is 60mm, and the distance between the outermost PVC pipe 32, i.e., the PVC pipes 32 at both ends of the plastic frame 31, and the side of the plate 10 is 100mm; the steel mesh 33 is formed by cross-tying of transverse steel bars and longitudinal steel bars, wherein the diameter of the transverse steel bars is 10mm, the distance between adjacent transverse steel bars is 150mm, the diameter of the longitudinal steel bars is 10mm, and the distance between adjacent longitudinal steel bars is 100mm. Compared to the example above, where the slab 10 does not have a pipe filling layer inside, i.e., it does not use plastic frame 31 and PVC pipe 32 for filling, and the rest of the part is the same as the example above, only using ultra-high performance concrete to complete the pouring of slab 10 with a length, width and height of 8000mm, 2000mm and 80mm respectively and set with steel mesh 33, the self-weight of slab 10 in this example is reduced by 5%, while the structural strength of slab 10 is increased by 10%.

[0037] Specifically, the edge of the plate 10 is also provided with connection holes 40 to facilitate connecting adjacent plates 10. For example, as shown... Figure 4 As shown, a bolt sleeve 41 is pre-embedded in the connecting hole 40. The assembly of adjacent plates 10 can be quickly completed by the joint action of the connector and the locking component. Specifically, the connector is a washer 42, and the locking component is a bolt 43 and a nut 44. The washer 42 has through holes at both ends that mate with the connecting hole 40. By placing the washer 42 in the corresponding position of the connecting hole 40 of the adjacent plate 10, and then passing the bolt 43 through the through hole and the connecting hole 40 in sequence, and locking it with the nut 44, the assembly of the adjacent plates 10 is completed.

[0038] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model.

Claims

1. A non-slip and wear-resistant UHPC bridge board, characterized in that, include: plate body; A wear-resistant layer is provided on the top of the plate, and the surface of the wear-resistant layer is provided with concave anti-slip texture, so that an anti-slip layer is formed on the surface of the wear-resistant layer. The tube filling layer, disposed within the plate, includes a support frame and several rigid plastic tubes spaced apart along the length of the plate on the support frame to reduce the weight of the plate and ensure the structural strength of the plate.

2. The anti-slip and wear-resistant UHPC bridge plate according to claim 1, characterized in that: Along the height direction, the tube filling layer is located in the middle of the plate.

3. The anti-slip and wear-resistant UHPC bridge plate according to claim 1, characterized in that: The wear-resistant layer is a structural layer formed by corundum and ultra-high performance concrete.

4. The anti-slip and wear-resistant UHPC bridge plate according to claim 1, characterized in that: The wear-resistant layer has a thickness of 8-12mm; the concave anti-slip texture has a depth of 1-3mm.

5. The anti-slip and wear-resistant UHPC bridge plate according to claim 1, characterized in that: The concave anti-slip texture includes polygonal pits that are evenly spaced along the length and width of the plate.

6. The anti-slip and wear-resistant UHPC bridge plate according to claim 5, characterized in that: The polygonal recess is a regular hexagon with a side length of 4-6mm, and the center-to-center distance between adjacent regular hexagons is 10-14mm.

7. The anti-slip and wear-resistant UHPC bridge plate according to claim 1, characterized in that: The support frame includes a plastic frame for placing rigid plastic pipes; steel mesh is also provided above and below the plastic frame.

8. The anti-slip and wear-resistant UHPC bridge plate according to claim 1, characterized in that: The diameter of the rigid plastic tube is 15-25mm, and the spacing between adjacent rigid plastic tubes is 55-65mm.

9. The anti-slip and wear-resistant UHPC bridge plate according to claim 1, characterized in that: The rigid plastic pipe is a PVC pipe.

10. The anti-slip and wear-resistant UHPC bridge plate according to claim 1, characterized in that: The edge of the plate is also provided with connection holes to facilitate the connection of adjacent plates.

Images