Bridge supports come in various types due to environmental limitations. Choosing the right type for different environments can reduce costs and aid in future maintenance. The development of anything is to meet demands, and producing products that the market needs is essential for continued growth. This is true for bridge supports as well. To enhance corrosion resistance and practicality, an epoxy resin composite cable bridge has been developed: it incorporates a metal frame within the epoxy resin cable bridge, retaining the original characteristics while also increasing mechanical strength, capable of supporting large-diameter cables with spans up to 12 meters. To address the issue of delamination caused by different expansion coefficients between metals and non-metals, a bonding layer is added between them. To tackle issues like easy powdering and aging, a protective layer with special functions against light is pressed onto the surface of the bridge. The epoxy resin composite cable bridge has been certified for a lifespan of over 30 years; products have been in use for 15 years without signs of discoloration or aging. The epoxy resin composite cable bridge is suitable for use in corrosive environments, with large spans, and under heavy load conditions.
Glass fiber reinforced plastic (GFRP) pull-wound cable trays are made using unidirectional glass fibers and composite fibers, combined with weather-resistant and corrosion-resistant resins. According to different application scenarios, they are continuously molded under specific temperatures and proportions, offering both economic advantages over hand-laid molds and higher production efficiency. The ability to customize sizes is particularly appealing, ensuring the quality of the product is effectively guaranteed. Consequently, the replacement of iron cable trays with GFRP pull-wound cable trays is inevitable for future development. These trays utilize the GFRP pull-wound process, are produced through mechanized continuous manufacturing, and thus possess the benefits of domestic counterparts. They feature stable dimensions, can be selected at will, with lengths exceeding 8 meters, and offer higher strength, rigidity, and corrosion resistance. The glass fiber compression-molded cable trays involve placing glass fibers and resins in molds, which are then cured under specific pressure and temperature. These trays are known for their excellent corrosion resistance, flame retardancy, high strength, smooth surfaces, and the ability to produce complex structures in a single molding process.
