Dapeng Town Industrial Park, Tongshan District, Xuzhou City, Jiangsu Province, China
Workers are working on the construction site of the airport terminal extension project. The steel roof project of the terminal building has been fully upgraded and spliced together, marking the complete capping of the steel structure project of the terminal building. The roof of the steel structure presents an undulating outline with a hyperboloid shape, and its shape is based on the theme of “snow lotus”.
At the roof 40 to 50 meters from the ground, the construction personnel began to enter the metal roof installation and construction. The top of the terminal building is called the steel roof. Due to the complex structure and the large number of steel components, the precision of assembly and lifting is extremely high. To this end, the construction personnel divided the steel roof of the area into 25 assembly areas and 15 overall lifting areas. The operators will make the formed steel components, perform in-situ three-dimensional assembly in the assembly area, and then carry out dislocation and lifting in the lifting area. Overall improvement. The projected area of the steel roof is about 125,000 square meters, and the maximum lifting height is about 53.5 meters. The lifting components include roof trusses, grids, horse tracks, etc., with a total weight of 28,000 tons.
In order to ensure the installation accuracy, the current advanced computer-controlled overall lifting technology is used, and the computer is used to precisely control the synchronization of each lifting point during lifting. It integrates mechanical, hydraulic, computer control, sensor monitoring and other technologies to solve the traditional lifting technology and Large-scale hoisting machinery cannot overcome difficulties in terms of lifting height, lifting weight, structural area, and operation site. The assembly process also uses technologies such as 3D scanning. Each steel structure has an “identity information” to ensure that each steel component is spliced in place.
In view of the characteristics of many types of airport international terminal project structure, tight construction period, new model, complex process and high degree of modernization, construction enterprises use and independently innovate a number of new technologies, new processes and new materials to carry out construction operations.
