Computer-controlled lifting and jacking technology represents a cutting-edge approach to installing large steel structures and heavy equipment. This advanced method integrates mechanical, hydraulic, and computer control systems, along with sensor monitoring, to overcome traditional limitations in height, weight capacity, structural connections, and site constraints. The technology is known for its safety, reliability, maturity, and high economic efficiency. It operates on the principle of "flexible steel strand load-bearing, hydraulic cylinder cluster, and computer-controlled synchronized lifting," ensuring precise coordination across all lifting points during construction.
Technical specifications require careful consideration of both the supporting structure (permanent or temporary) and the strength, stiffness, and stability of the steel structure or equipment being lifted. A thorough analysis of the mechanical performance under construction conditions is essential, along with calculating forces at each lifting point and ensuring proper support for the foundation. The degree of synchronization among lifting points must be determined through calculation to ensure smooth operations.
The selection of the lifting method should aim to minimize the height of the supporting structure while maintaining stability. Safety and stability of the lifted structure are also key priorities. When determining the number and location of lifting points, the primary goal is to ensure stability during the lift, followed by optimizing the number of points to reduce complexity and improve efficiency. Lifting equipment must be reliable, durable, easy to maintain, and capable of meeting specific project requirements such as mobility, speed, and safety features.
The sliding method is highly versatile, suitable for one-way trusses, two-way trusses, and grid structures with limited rigidity. By increasing support points, expanding the assembly platform, or assembling multiple trusses simultaneously, the sliding technique can be effectively applied. The propulsion system used in this method is often a computer-controlled, hydraulic crawler system—offering high automation, ease of operation, strong safety, and wide applicability.
Key technical measures include developing a detailed construction plan covering unit division, platform setup, high-altitude assembly, traction systems, and monitoring. Other steps involve setting up the slide track, installing the synchronous system, and continuously monitoring stress and strain to ensure controlled execution.
This technology is widely applicable for large-span roofs, steel structures in stadiums, theaters, hangars, and corridors, as well as for the installation of ultra-high components like TV towers and power station boilers. It is also used for lifting large equipment such as main girders and boilers of heavy cranes.
Notable applications include the National Library’s main steel structure (10,800 tons), the roof structure of the Capital International Airport’s A380 maintenance warehouse (10,500 tons), the Shenzhen Civic Center's large roof, the Guangzhou New TV Tower, the installation of a 130mm × 4200mm CNC hydraulic coil machine at the Dongfang Boiler Factory, and the overall upgrade of an 800t × 185m gantry crane (4,750 tons) at Offshore Oil Engineering (Qingdao).
SBS prefabricated building is a new type environmental friendly product that adopts steel structure as frames, various plates and panels as surrounding protection system,high strength bolts as component connection. The metal frame buildings are mainly used as modular house, office, cleaning workshop, cold storage room, wide span workshop, warehouse, exhibition hall,stadiums , hangars, steel-structure supermarkets, high-rise steel constructions, logistics center, container house and so on.
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