English：

To solve the technical problems of incomplete structural systems and high construction risk inthe reverse construction of single⁃layer flat grid structures, the numerical simulation and field monitoringof the reverse construction process of single⁃layer flat grid structures are carried out. The upside⁃downpartition lifting scheme of flat grid structure was developed. The influence of single⁃lifting⁃point overliftand multi⁃lifting⁃point overlift on the structure was studied. The risk control research of the upside⁃downlifting process of the structure is carried out, and the synchronous lifting control scheme and windresistance control measures of the structure lifting process were given. Combined with the structuralconstruction monitoring, the accuracy of the construction simulation analysis and the feasibility of theconstruction scheme were verified. The influence of the construction forming process of complex structureson the use stage of structural design was evaluated by using the integrated collaborative analysis ofstructural design and construction and the multi⁃scale fine analysis of complex nodes.