铁路路基BIM设计系统研究

Study on BIM Design System for Railway Subgrade

当前BIM技术在铁路路基工程设计阶段的应用主要是通过商业软件实现三维模型的创建。市场上的BIM软件仅提供基础的设计平台,无法满足专业设计要求。因此,需要明确铁路路基BIM设计的应用需求和价值点,选择合适的软件平台开展铁路路基BIM设计系统研发。本文结合BIM技术与铁路路基工程结构特点,以数据为基础,研发了铁路路基BIM设计系统,主要取得以下研究成果:(1)根据线路、桥梁、隧道等相关专业数据与路基设计数据,实现了路基构件库的创建、BIM模型的参数化创建以及二维图纸和工程数量等成果输出;(2)解决了相关专业的设计变更导致路基模型重复创建的问题,有效提高了设计效率和精度;(3)初步实现了铁路路基工程BIM正向设计,为BIM技术后续更深层次的应用打下良好基础。

In today’s application of BIM in the engineering design stage of railway subgrade,3D models are generally created using commercial software.BIM software on the market only provides a basic design platform,which cannot meet the specific requirements for subgrade design.Therefore,it is necessary to clarify the application requirements and value points of BIM-based railway subgrade design,and select an appropriate software platform for research and development of a BIM-based railway subgrade design system.This paper developed a BIM-based railway subgrade design system based on data according to the characteristics of BIM and railway subgrade engineering structures.The main results are as follows:(1)The creation of the subgrade element library and parametric BIM models and output of 2D drawings and quantities of works are realized according to the data of relevant disciplines such as lines,bridges and tunnels and subgrade design data.(2)The problem of repeated creation of subgrade models caused by design changes of relevant disciplines is solved,effectively improving the design efficiency and accuracy.(3)BIM-based top-down design of railway subgrade works is preliminarily realized,laying a solid foundation for the subsequent further application of BIM.