Reasons for short-term problems after the delivery of the grid project

The grid structure forms a regular network space structure by connecting the nodes of various rods, and combines triangular pyramids, triangular prisms and other units to form a plane, forming the formation of the grid structure, due to its unique properties. Good application in space architecture. If the construction requirements of the selected grid service partner are not rigorous enough, and the installation process is immature, some problems may occur after the project is delivered for a period of time, then what causes it?

(1) When the road is assembled, the supporting points are not symmetrical, the bearing capacity is unscientific, and the reasons for the deviation during the assembly are accumulated. Some components are incorrect, which causes the bearing capacity to change, resulting in the deformation of the spherical grid as a whole or some components.
(2) The grid welding method and the electric welding sequence are incorrect, which causes the electric welding stress and deformation.
(3) During the overall hoisting and installation of the grid, the selection of hoisting is unscientific, and no axial force checking, component super-earth stress checking, deflection value checking, and necessary structural reinforcement countermeasures for super-earth stress are carried out for hoisting.
(4) During the overall hoisting of the grid installation, the hoisting speed of each hoisting point is different, and the deviation and slope are beyond the allowable range, causing deformation and destruction.
(5) The selection of the construction plan of the grid project is incorrect, and the plan is not effectively selected based on the steel structure grid method and on-site construction conditions. Geometric figures cannot be generated during installation and the management system will not be changed, resulting in deformation and destruction.
(6) The embedded parts, pre-embedded bolts or column tops of the grid support are greatly deviated, difficult to place, and forced to place, resulting in the change of the bearing capacity of the rubber support standard and the deformation of the components.
(7) The workers who install the grid are left behind, and the component parts and the angle of view of the ball are incorrect.
(8) When the chain support point is wound, the cause of the deviation is too large, which causes the rubber support to deviate and the web rod collides with the support point.