Dapeng Town Industrial Park, Tongshan District, Xuzhou City, Jiangsu Province, China
The large-span spherical space frame is divided into multiple zones according to the structural characteristics of the spherical space frame and its substructure. The construction technology of the outer two small module ground prefabricated components is selected, and the center ring ground prefabricated components are lifted as a whole. The ground small module prefabricated components use the method of plane coordinate rotation to convert the original design plan spherical connection point coordinates into new plane coordinates, which reduces the aspect ratio of the prefabricated component mold.
It saves stainless steel plates and reduces high-altitude operations; it uses the characteristics of the infield and the number of circles outside the dome to reduce the use of steel pipe scaffolding; it has a high center circle and no infield in the middle, and uses the overall lifting method. The ground assembly welding is formed in one lift in time, using a hugging rod, the wind rope is tied on the outside during lifting, reducing the length of the wind rope; the spherical space frame manufacturer determines the effective electric welding welding program process based on the measured welding shrinkage, and reasonably controls the electric welding welding deformation and removes the electric welding welding stress.
The hollow steel structure factory building: This method uses far-infrared rangefinders, levels, and levels to control the three-dimensional coordinates of the spherical connection points using ground markings.
Large-span spherical space frame processing is a high-tech space frame processing method. In the construction process of the large-span spherical space frame structure, it fully utilizes the geometric characteristics of the spherical dome, and the lower side part uses small module ground prefabricated components to assemble in the air; the center circle part that is higher from the ground uses the overall lifting method, and finally semi-air The side and center circle are welded together as a whole, which greatly reduces the use of steel pipe scaffolding and ensures the quality and safety of construction.
This installation method not only shows the advantages of overall lifting, but also gets rid of the shortcomings of the scattered method. The construction method of the large-span spherical space frame structure was technically inspected and appraised in January 1994. The authoritative experts believe that this technology has improved the basic construction method and has certain originality and innovation. The complete set of equipment research and development and application has filled the gap in the manufacture and installation of large-span spherical space frame structures in China, achieved a leading position in China, and the construction quality of the spherical space frame has reached an international level. This technology won the first prize for scientific and technological innovation in 1994, and the application project of this technology-Tianjin Sports Management Center, the main venue of the 43rd World Table Tennis Championships, won the Luban Award in 1995. The flat roof of the museum is a 108m-span spherical space frame with a covering diameter of 135m, a center circle end point height of 35m, and a dome structure in China and Asia.
