Fire-resistant bridge supports are a type of cable bridge, with the standard name being "fire-retardant bridge." This means that the cables within the bridge can maintain operation for a certain period of time at specific temperatures. By applying fire-resistant coatings to the surface of ordinary supports, we can achieve fire-retardant effects. In reality, the bridge itself does not catch fire; it's only the cables that do. These bridges are easy to install, structurally sound, durable, and aesthetically pleasing. Cables are installed on cable bridge supports primarily to ensure power supply is maintained during a fire, reducing casualties. So, what are the fire-resistant properties and functions of fire-resistant bridges, and how do they differ from ordinary bridges? Let's take a look together below!
1. Characteristics and Functions of Fireproof Bridge Beams
Fire-resistant bridge supports are coated with fire-retardant paint on the surface of standard supports to provide fire prevention and retardant effects. In fact, the bridge supports themselves will not catch fire. It's only the cables that can ignite. The overall installation is convenient, the structure is reasonable, the lifespan is long, and it is aesthetically pleasing, with cables mounted on the cable bridge supports.
Based on the fire-retardant principle of fire retardant coatings, they effectively block the spread of fire, offering good fire-resistant isolation. These coatings are fireproof, oil-resistant, corrosion-resistant, non-toxic, and environmentally friendly. They feature thin coatings, high fire resistance limits, and strong adhesion.
Installing fire-resistant walls on the shells of ordinary cable trays or fire-resistant smoke spread cable trays can prevent heat transfer to the interior within the specified time. Coating the shells with fire-resistant paint can effectively isolate air and achieve insulation, allowing the fire-resistant cable trays to operate normally.
Additionally, the use of eco-friendly pigments ensures that the fire-retardant coatings on the bridges are non-toxic, pollution-free, fire-resistant, waterproof, and oil-resistant. They are generally used for laying: power cables, communication signal cables, etc.
2. The Difference Between Fireproof Bridge Rails and Standard Racks
(1) Fire-resistant bridge racks differ in usage environment from standard racks.
① Fire-resistant bridge supports application: In projects, fire-resistant bridge supports possess the fire-resistant property, featuring a frosty fire-resistant coating layer. The fire protection engineering section has fire-resistant requirements for the wiring of fire protection equipment, which can achieve fire prevention, heat insulation, and flame-retardant effects.
② Standard Bridgeway Usage Environment: While slightly inferior in corrosion resistance compared to other materials, the installation of galvanized steel bridgeways in dry indoor environments is common. Galvanized steel cable bridgeways are primarily used for installations in dry indoor settings. Galvanizing, also known as "electro-galvanizing/cold galvanizing," is sufficient to meet corrosion protection requirements, and the cost of galvanized bridgeways is relatively low.
3. Fire-resistant bridge racks have different requirements from standard racks.
Fire Bridge Requirements: The fire resistance time for fire bridges in underground parking garages must exceed one hour. For areas with fire protection requirements.
2) General requirements for bridgeways: In engineering design, confirm the optimal plan to fully meet the requirements for construction equipment, maintenance and repair, and cable laying. The installation location of the bridgeway must be summarized based on factors such as economic rationality, technical feasibility, and operational safety.
Yunnan Ziyang Zongjiu Industry & Trade Co., Ltd. is a manufacturer of cable trays and conduit pipes in Yunnan, specializing in the production and processing of trays and conduit pipes for many years. We offer factory-standard specifications with galvanized, fire-retardant, and installed slots. If you are in need of purchasing cable trays or conduit pipes, please feel free to call for detailed discussions!
