Spaceframe-SAFS

 As welding technology encounters the twin challenges of curved space surfaces and oversized spans, the bolted ball node, with its unique structural intelligence, is reshaping the engineering logic of modern steel buildings . I. the welding technology of the space dilemma   The rigid yoke of geometric constraints In the construction of a shaped roof of an art museum, the complex intersection of double-curvature steel beams made the traditional welding encountered technical bottlenecks. Local deformation caused by heat input so that the 16mm thick plate to produce 0.3mm/mm waviness, even with the segmented welding process, still can not meet the surface accuracy requirements, and ultimately forced to cut and replace 23% of the components.   Spatial Conduction of Residual Stress After welding the 120m span truss of an international exhibition centre, the residual stress triggered an 8cm arching deformation of the overall structure. Although 65% of the stress was removed b...

 The design difficulties of steel large-span roofs are mainly reflected in the following aspects: I. Structural stability and deformation control Stiffness and stability: Due to the light weight of steel structure, its stiffness is relatively small and the structure is not stable enough. In the case of large span, once the force exceeds the maximum range that the structure can bear, the steel structure may be bent, deformed, shifted, twisted, etc., which seriously affects the stability of the whole structure. Therefore, the design needs to ensure that the structure has sufficient stiffness and stability to meet the use requirements. Deformation design: In order to ensure that the structure can still maintain a good shape after being stressed, the design needs to focus on deformation design. This includes analysing the system components of the steel structure as a whole to ensure that the forces in each component meet the criteria and avoid exceeding the bearing capacity of the bar...

 The bolt ball node is mainly composed of the following parts: Steel ball: Material: forged or cast solid steel ball, but the inner part is actually hollow to reduce weight. Role: As the core component of the connection, the steel ball is drilled and turned out according to the angle of convergence of the net frame rods, and is used to connect with the bolts. Bolt: Material: high strength bolt to ensure the reliability and durability of the connection. Role: Connect the steel pipe members and steel balls together by bolts to form a whole structure. The diameter and length of the bolts are selected according to the force demand. Sleeve: Shape: usually a hexagonal sleeve for easy screwing. Role: Sleeve on the screw of the bolt, by unscrewing the sleeve can drive the bolt to rotate, so as to realise the connection between the bolt and the steel ball. Pins or screws: Function: used to fix the bolt and sleeve together, preventing the sleeve from falling off in the process of unscrew...

  As an important part of modern steel structure buildings , steel mesh frame, with its unique lightweight and high strength characteristics, shows significant advantages in the field of building construction. Among them, easy transport is one of the most important features of steel mesh frame, behind which lies a significant improvement in building installation efficiency. In traditional building construction, large steel structure buildings often face transport problems. The bulky section steel structure not only has high transport cost, but also has very high requirements on the space and load capacity of the transport tool, which can easily lead to loss and waste of time in the transport process. The emergence of steel mesh frame has completely changed this situation. By breaking down the building structure into modular design, the steel mesh frame achieves a great reduction of structural weight, and the transport process becomes extremely easy. For example, in the construction...