Bridge Design Of Cable Bridge

The weak current system of intelligent buildings usually has multiple information monitoring and communication facilities such as BA(building automation), OA(office automation), CA(communication automation) and other corresponding systems, taking BA as an example, in addition to the power supply, water supply and drainage, air conditioning, elevators and parking lots and other facilities configuration necessary information monitoring, as well as SA(security automation), FA(Fire automation) and other sub-systems to achieve system integration or partial system integration. According to the functional needs of the main building to determine its level and content, these systems include different types of cables and wires, some of which are active cables (supply voltage is generally DC12/24/48V and AC220V), Due to the continuous development of the construction industry cable bridge is also advancing with The Times and constantly recognized by the market and accept the localization of cable bridge industry, the product selection of high-quality cold-rolled steel plate, has been widely concerned about the product selection of high-quality cold-rolled steel plate, the surface process is cold galvanized, hot galvanized, electrostatic spraying, fireproof paint, baking paint and so on. Among them, the products are widely used in petrochemical, metallurgy, electric power, school communication, high-rise buildings and other fields, with beautiful appearance, strong corrosion resistance, wide versatility, flexible and convenient installation, complete varieties and so on.
Some are passive electrical (optical) cables (such as data cables, video coaxial cables, etc.), therefore, in the design of the routing method and routing selection, it should be distinguished, not only should meet the requirements of the specification, but also consider the safety, scalability, economy and beauty of the wiring, easy maintenance, cable tray as a carrier for carrying various cable laying. Subordinated to the needs of wiring, should also follow the above principles to be implemented. Due to a variety of parallel and cross pipelines in the building, space is limited, especially in large office buildings, financial and commercial buildings, hotels, venues and other buildings, information points are dense, cable laying in addition to the use of floor grooves and buried pipes in the wall, cable bridge is widely used in the shaft and indoor ceiling ceiling to provide different directions of wiring. Various cables of the weak current system are classified in the bridge, and the best routing and installation method should be determined according to the requirements of the direction, combined with the location of the building structure and air conditioning, electrical and other pipelines to be negotiated, passive cables can not be laid side-by-side with active cables, and are limited by conditions. When the cable is drawn through the floor, wall or expansion joint, the corresponding holes and positions should be marked on the building drawing to avoid temporary drilling during construction due to omissions, which may hurt the civil structure. In order to prevent electromagnetic radiation interference (EMC), the closure of the bridge should be considered in the design of the bridge.