基于几何图元的铁路施工组织形象进度图参数化自动生成方法OA

[Objective]The railway construction organization schedule image is a mandatory submission document in railway construction projects in China.To address the issues of inflexible formats,time consumption,and error-proneness caused by frequent adjustments to construction organization plans,this study proposes a parametric automatic generation method for railway construction organization schedule images based on geometric primitives.[Methods]First,the schedule image was geometrically decomposed,and drawing interfaces for basic geometric primitives(points,lines,and surfaces),along with interfaces for the shapes,styles,and colors of different geometric primitives,were designed.Next,data storage structures and semantic associations for construction organization plan items and drawing parameters were designed to store temporal,spatial,and logical information of the construction schedule,as well as the drawing parameters of the schedule image.Finally,the method traversed construction organization plan items,matched the corresponding drawing parameters,and invoked the appropriate geometric primitive drawing interfaces to generate geometric primitives with different style parameters at the designated mileage and time positions,thereby automatically generating schedule images.[Results]Experiments demonstrated that this method could automatically generate schedule images containing 3 600 geometric primitives within 2 seconds,meet the requirements of different page layouts,and flexibly adapt to different styles.By parameterizing the storage of construction organization plan items,the method enabled the automatic generation of schedule images for different railway types.It also supported the automatic parsing of construction organization plan data at different levels,adapting to the content requirements of guidance-level and implementation-level construction organization plans with different granularities.[Conclusion]This method is efficient,flexible,universal,and adaptable,and can accommodate different railway projects,layout requirements,and content at different scales.