Design and construction method and system for special-shaped steel structure roof model

The invention discloses a special-shaped steel structure roof model design and construction method and system. The method comprises the following steps: obtaining a structure linear skeleton drawing corresponding to a to-be-processed three-dimensional building effect drawing and three-dimensional coordinate values of a plurality of positioning points; importing the structural linear skeleton diagram and the three-dimensional coordinate values of all the positioning points into Grasshopper, and connecting the positioning points according to a connection relationship between nodes in the structural linear skeleton diagram to form a plurality of inter-node line segments; generating a first special-shaped steel structure roof three-dimensional model according to all the internode line segments by utilizing a plurality of component generation programs; and analyzing the first special-shaped steel structure roof three-dimensional model by utilizing an analysis program, and optimizing parameters of each component of