Galvanized and dipped plastic protective mesh isolation fence for highway bridge anti throwing net

Description :

  Anti throwing net is a safety protection product specifically used for transportation facilities such as highways, overpasses, and overpasses. Its main function is to prevent pedestrians or vehicles from throwing objects under the bridge, ensuring the safety of roads, railways, and pedestrians under the bridge. This type of product is usually installed above or on the sides of guardrails on both sides of bridges, forming a continuous closed barrier that effectively intercepts falling debris such as stones and glass bottles. The anti throwing net has a stable structure and a clear view, which not only does not affect the aesthetics of the bridge, but also provides high-strength physical isolation. It is an indispensable safety component in modern transportation engineering and is widely used in various elevated bridges and interchanges.

  The specifications of anti throwing nets are usually customized based on engineering design drawings, with common mesh sizes of 50mm × 50mm, 75mm × 75mm, or increased to 25mm × 25mm according to anti smashing requirements. The frame is mostly made of rectangular pipes or angle steel welded together, and the mesh material is generally low-carbon steel wire. After hot-dip galvanizing treatment, it is subjected to electrostatic spraying or immersion treatment, and the coating color is mostly green, blue, or gray to ensure long-lasting anti-corrosion and anti rust performance. The implementation standard refers to JT/T 374-1998 "Technical Conditions for Barrier" and relevant specifications for highway traffic safety facilities. The overall structure must have sufficient impact resistance and be able to withstand external impacts within the specified range without serious deformation or fracture.

  When selecting anti throwing nets, it is important to consider the corrosion level of the installation environment, wind load requirements, and the type of anti throwing measures. For coastal or high humidity areas, it is recommended to use a dual anti-corrosion process of hot-dip galvanizing and dipping plastic to extend the service life; For road sections with high traffic volume and vehicle speed, the mesh diameter and frame wall thickness should be appropriately increased to improve overall rigidity. Compared with ordinary guardrails, anti throwing nets pay more attention to the compactness of the mesh and the firmness of the connecting components to prevent small objects from passing through. If there is an electrified railway or high-voltage line under the bridge, insulation performance or special reinforcement measures should also be considered to ensure that there are no dead corners in the protection and avoid safety hazards caused by improper selection.

  The installation of anti throwing nets is usually fixed with flange bolts or welded with embedded parts. During construction, it is necessary to ensure the verticality of the columns and the flatness of the mesh. The connecting bolts need to be equipped with anti-theft caps to prevent manual disassembly. In daily maintenance, it is necessary to regularly check whether the mesh surface is damaged or welded, and whether the coating is peeling or rusting. Especially after encountering extreme weather or traffic accidents, the damaged parts need to be repaired in a timely manner. When cleaning, you can rinse the surface dust with clean water to avoid using strong acid and alkali cleaning agents to damage the plastic layer. Good maintenance not only keeps the appearance of the anti throwing net clean, but also ensures that it is in the best protective state for a long time, reducing the cost of replacement in the later stage.

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