Dapeng Town Industrial Park, Tongshan District, Xuzhou City, Jiangsu Province, China
Due to the limitation of transportation and equipment installation work ability, or in order to better ensure the smooth installation, many finished components are used as a whole in the space frame manufacturer according to the interior space design specified in the scheme design to check each Part of the intermediate connection condition, called pre-assembly.
Pre-assembly is generally divided into two types of pre-assembly on the plane design drawing and platform-type pre-assembly. The assembled components should be in a casual state and cannot be forced to be fixed. After the pre-assembly inspection is qualified, the required marks such as the upper and lower accurate axes, building elevation measurement points, intersection selection points, etc. shall be marked on the components. If temporary supports and detectors need to be welded, the allowable error shall meet the corresponding requirements. Regulation.
The space frame manufacturer explains the pre-assembly method in detail: the flat assembly method, the vertical assembly method, and the abrasive assembly method.
The actual operation of the flat-pack method is convenient and fast, and there is no need to stabilize the engineering reinforcement and preventive measures; there is no need to build a steel pipe frame; most of the welding is flat welding, the actual welding operation is simple, and there is no need for very professional welding staff, and the welding quality is conducive to ensuring; Correction and offset are convenient, fast and accurate.
It is suitable for assembling steel frames with relatively small spans and relatively large bending strains of components, such as steel columns within 18m in length, panoramic sunroof frames within 6m of span, and portal steel frames within 21m of span.
The vertical assembly method can be assembled and assembled at one time; the block covers a small area; there is no need to lay or build a special assembly service platform or wooden sleeper pier for practical operation, saving raw materials and comprehensive man-hours; eliminating the production process of reverse wind, and the quality is conducive to guaranteeing There is no need to add block upwind turning, clearing and transportation, timely, and stacking lifting equipment to reduce the construction period; the splicing welding of block assembly joints or nodes can be welded symmetrically on both sides, which can prevent prefabricated component component joints or steel components due to joint welding. Deformation and thus all masses lead to scoliosis.
However, it is necessary to build a certain number of stable fixed supports; it is difficult to correct and offset the block body; there are many welding vertical seams of the connecting nodes of the steel components and the connecting parts of the prefabricated components, which improves the difficulty of the actual welding operation.
Abrasives refer to digital models (hollow floors or foreign models) that conform to the graphic appearance or outline of the product workpiece. Using abrasive tools to assemble and assemble welded steel frame has many advantages of good product quality and high production efficiency. For a large number of plate structures and bad steel structures, it is reasonable to fully consider the use of abrasive tools.
The frame structure installation mold of the steel structure space frame is generally made by the method of connecting two points to parallel lines, which is simple to construct and has a particularly good application effect.
