Composite material foot plank for railroad bridge

Abstract

The composite material foot plank for the railway bridge comprises a composite material flat plate (1), the composite material flat plate (1) is of a rectangular structure, the lower end of the composite material flat plate (1) is provided with a strip-shaped supporting foot (11) penetrating through the lower surface of the composite material flat plate, and a composite material pultrusion plate (2) is arranged in the strip-shaped supporting foot (11). According to the composite material foot plank for the railroad bridge, the self weight of the composite material foot plank is small, labor and time are saved during replacement, installation is convenient and fast, and the overall replacement construction period can be shortened; according to the composite material foot plank for the railroad bridge, recycled leftover materials, waste materials and the like are used as main materials, and environment-friendly glue is used as auxiliary materials for bonding, so that the composite material foot plank is environment-friendly; the foot plank is excellent in performance, low in price and suitable for large-scale popularization; the composite material foot plank connecting clamp for the railroad bridge adopts PCA technical treatment and has corrosion resistance.

Description

Technical Field

[0001] This utility model belongs to the field of railway bridge construction technology and relates to a composite material walking board for railway bridges. Background Technology

[0002] Currently, the pedestrian walkways used on railway bridge decks are mainly reinforced concrete or steel. Existing walkways have encountered numerous problems during use, such as heavy weight, susceptibility to carbonization, exposed reinforcement, and easy breakage, seriously endangering personal safety. Furthermore, reinforced concrete or steel walkways are difficult to maintain, require frequent maintenance, have high operating costs, and disrupt normal track operation. A small number of rubber walkways are currently in use, but their elastic modulus decreases significantly at higher ambient temperatures, leading to increased deformation under pedestrian loads and causing pedestrians to feel unsafe.

[0003] Currently, railway bridge pedestrian slabs on the market have the following significant problems: The widely used concrete pedestrian slabs have poor durability. Due to poor construction quality and inadequate daily maintenance, issues such as spalling and exposed reinforcement are common, especially in rainy, humid, coastal, and acid rain-affected areas; Reinforced concrete pedestrian slabs are heavy. This leads to increased lateral vibration on higher bridges or bridges with high-speed traffic, making them prone to damage and requiring cumbersome replacement; After installation, reinforced concrete pedestrian slabs require asphalt grouting to prevent vibration and ensure a seamless connection, which is not only labor-intensive but also does not meet environmental protection requirements; A small number of rubber pedestrian slabs exist in China, made by vulcanizing rubber around a steel mesh, but these are costly, prone to aging, and have high deflection, making them unsuitable for widespread use. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention proposes a composite material walking board for railway bridges.

[0005] A composite material pedestrian walkway for railway bridges includes a rectangular composite material flat panel. A strip-shaped support foot extending through the lower surface of the flat panel is provided at its lower end. The flat panel and the support foot are integrally formed, with a pultruded composite material sheet disposed within the support foot. The flat panel and the pultruded composite material sheet are bonded together using environmentally friendly adhesive.

[0006] The composite pultruded plate has a T-shaped cross-section, including three flanges. A groove is cut into the center of the lower end of the strip support leg. One flange of the composite pultruded plate is fixed within the groove, while the other two flanges are parallel to the strip support leg. The width and number of pultruded plates are determined by the actual working environment and are easily adjustable.

[0007] After the composite material plate with a pultruded plate is pressed and molded, it is cured. After curing, the self-weight of the walking board is reduced by grooving, the porosity of the walking board surface is increased, and the impact of wind load is reduced.

[0008] The composite material plate has uniformly distributed grid pores on its surface, and the width of each grid pore is 18 mm.

[0009] Multiple composite material flat plates are interconnected by clamps. Each clamp includes an upper wing plate and a lower wing plate, with an "I"-shaped cross-section. The upper wing plate is 5mm thick, 50mm wide, and 70mm long on one side. The lower wing plate is 5mm thick, 50mm wide, and 100mm long on one side. Connectors are provided on the lower side of the clamps, which can be connected to the supporting structures such as angle steel and I-beams below the walkway. The connection can be made by bolts, reinforcing bars, rivets, etc.

[0010] Optionally, there may be multiple strip support legs.

[0011] The composite material flat plates are multiple.

[0012] The composite material pedestrian walkway for railway bridges provided by this utility model has a small self-weight, saving labor and time during replacement, and is easy to install, which can shorten the overall replacement period. The composite material pedestrian walkway for railway bridges uses recycled scraps and waste materials as the main material, and is bonded with environmentally friendly adhesive, which is environmentally friendly. The walkway has excellent performance and low price, making it suitable for widespread promotion. The connecting clamps of the composite material pedestrian walkway for railway bridges are treated with PCA technology, which has corrosion resistance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a composite material pedestrian walkway structure for railway bridges.

[0014] Figure 2 This is a schematic diagram of a pultruded plate structure.

[0015] Figure 3 This is a schematic diagram of the fixture structure. Detailed Implementation

[0016] The following describes in detail a composite material pedestrian tread for railway bridges provided by this utility model, with reference to the accompanying drawings and specific embodiments.

[0017] Appendix Figure 1-3 As shown, a composite material walking board for railway bridges includes a composite material flat plate 1, which has a rectangular structure. A strip-shaped support foot 11 is provided at the lower end of the composite material flat plate 1, penetrating the lower surface of the composite material flat plate. The composite material flat plate 1 and the strip-shaped support foot 11 are integrally formed. A composite material pultruded plate 2 is disposed in the strip-shaped support foot 11.

[0018] The composite pultruded plate 2 has a "T" shaped cross section, including 3 wing plates. The lower center of the strip support foot 11 is slotted. One wing plate of the composite pultruded plate 2 is fixed in the slot, and the other two wing plates are parallel to the strip support foot 11.

[0019] The surface of the composite material plate 1 is uniformly distributed with grid holes 3, wherein the width of the grid holes 3 is 18mm.

[0020] Multiple composite material flat plates 1 are interconnected by a clamp 10, wherein the clamp includes an upper wing plate 4 and a lower wing plate 5, the cross-section of which is I-shaped. The upper wing plate 4 of the clamp 10 is 5mm thick, 50mm wide, and 70mm long on one side. The lower wing plate 5 of the clamp 10 is 5mm thick, 50mm wide, and 100mm long on one side. A connector 6 is provided on the lower side of the clamp 10.

[0021] There are multiple strip-shaped support feet 11.

[0022] There are multiple composite material flat plates 1.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] Use recycled scraps and waste materials to clean three to five times with a stain remover until the water is clear, colorless, and free of impurities. Use a shredder to break down and grind the cleaned scraps and waste materials into granules, then add environmentally friendly adhesive to the granules, mix them evenly with a fully automatic mixer, and then use an extruder to form boards. After curing for 7 days until the strength increases, polish the surface of the obtained boards. To ensure the overall waterproofness and durability of the pedestrian walkway, apply a layer of waterproof coating to the smooth surface.

[0025] After the composite material panels are initially shaped, the surface is sanded until smooth, and a layer of waterproof coating is applied to improve the overall waterproofness and durability of the walkway panels. Once the coating curing period is over, the walkway panel production is complete.

[0026] The walkway board fixtures are treated with PCA technology for corrosion protection, which involves multi-element powder co-infiltration, passivation, and sealing. The process follows a pre-processing followed by corrosion protection.

[0027] Finally, it should be noted that the above embodiments are only used to describe the technical solutions of the present invention and not to limit the technical methods. The present invention can be extended to other modifications, variations, applications and embodiments, and therefore all such modifications, variations, applications and embodiments are considered to be within the spirit and teachings of the present invention.

Claims

1. A composite material pedestrian slab for railway bridges, comprising a composite material flat plate (1), characterized in that, The composite material plate (1) has a rectangular structure. A strip support foot (11) is provided at the lower end of the composite material plate (1) and extends through the lower surface of the composite material plate. The composite material plate (1) and the strip support foot (11) are integrally formed. The composite material pultruded plate (2) is disposed in the strip support foot (11). The composite material pultruded plate (2) has a "T" shaped cross section, including 3 wing plates, and a groove at the center of the lower end of the strip support foot (11). One wing plate of the composite material pultruded plate (2) is fixed in the groove, and the other two wing plates are parallel to the strip support foot (11).

2. The composite material pedestrian slab for railway bridges according to claim 1, characterized in that, The surface of the composite material plate (1) is uniformly distributed with grid pores (3), wherein the width of the grid pores (3) is 18 mm.

3. A composite material pedestrian tread for railway bridges according to claim 1, characterized in that, Multiple composite material flat plates (1) are connected to each other by a clamp (10). The clamp includes an upper wing plate (4) and a lower wing plate (5) of the clamp (10), which has an "I" shaped cross section. The upper wing plate (4) of the clamp (10) has a thickness of 5mm, a width of 50mm, and a single-sided wing plate length of 70mm. The lower wing plate (5) of the clamp (10) has a thickness of 5mm, a width of 50mm, and a single-sided wing plate length of 100mm. A connector (6) is provided on the lower side of the clamp (10).

4. A composite material pedestrian slab for railway bridges according to claim 1, characterized in that, There are multiple strip support feet (11).

5. A composite material pedestrian slab for railway bridges according to claim 1, characterized in that, The composite material flat plate (1) is multiple.

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