Design method and system for large-span steel bar truss floor support plate

The invention provides a design method and system for a large-span steel bar truss floor support plate, and belongs to the technical field of building construction.The design method comprises the following steps that S1, a model of the steel bar truss floor support plate is created through BIM software according to a design drawing; s2, performing preliminary structural analysis and collision simulation on the steel bar truss floor support plate model by using an analysis tool in BIM software; s3, performing preliminary optimization of the scheme according to an analysis result; s4, the scheme obtained after preliminary optimization is imported into MIDAS/GEN software, and further structural analysis is carried out; s5, an analysis result of the MIDAS/GEN is fed back to the BIM model, and the design scheme of the steel bar truss floor support plate is subjected to secondary optimization; and S6, according to the optimized scheme, the turnover steel beam is adopted as a temporary supporting structure of the ou