接触网工程BIM模型检验与

自动建模研究

周思颖

摘 要

随着我国高速铁路建设的不断发展，电气化铁路里程在其中的占比逐渐增加，向电气化铁路供电的系统为牵引供电系统，而牵引供电系统中提供电能的主体就是接触网。接触网是牵引供电系统中的唯一无备用子系统，其性能优劣对机车能否正常运行有决定性作用。接触网因其多学科专业交叉，在传统的二维设计中无法体现接触网设施复杂的空间关系，同时二维设计承载的信息量有限，接触网对于铁路的重要性使得想要借助新的技术手段，即为BIM技术来改善或者减少问题的出现。

对于接触网BIM模型来说，存在因人工建模或翻模使得模型出错的可能性，同时模型的精度也具有不确定性，因此本文的研究内容包括以下几个方面：首先，在对接触网BIM应用和规则检验研究现状分析的基础上，总结出基于BIM的接触网工程模型规则检验流程，为模型准备、规则解读、模型审查、审查报告四阶段，并结合实例验证该模型检验流程。其次，提出了构建接触网工程自动建模设计系统，提出了零部件设计、三维线路布置、支柱放置、装配设计、清单统计与生成技术路线，并针对自动建模中的关键技术三维线路坐标计算、三维坐标转换和SQLite数据库分别进行了介绍。最后对于MZ铁路接触网工程项目自动建模实例进行验证，其中对于接触网参数化族库、线路计算、腕臂装配和材料统计四个模块分别进行了功能测试。

从接触网BIM模型检验的结果可以看出，可以通过既定的检验流程检测出模型的问题，表示出合格或不合格，但模型的精度依旧难以掌握，而自动建模工具可以很好的来完善模型精度这个问题，达到辅助设计、辅助施工现场材料管理，包括备料下料等。将BIM技术整合到铁路工程中是一种全球趋势，BIM技术能为接触网工程提供新的工具和思考方式。

关键词：接触网   BIM  模型检验  二次开发  自动建模

Abstract

With the continuous development of China's high-speed railway construction, the proportion of electrified railway mileage is gradually increasing. The system that supplies power to the electrified railway is the traction power supply system, and the main body that supplies electric energy in the traction power supply system is the contact network. The contact network is the only non-reserved subsystem in the traction power supply system, and its performance is decisive for the normal operation of the locomotive. Due to its multidisciplinary professional crossover, the contact network cannot reflect the complex spatial relationship of the contact network facilities in the traditional two-dimensional design. At the same time, the amount of information carried by the two-dimensional design is limited. The importance of the contact network for the railway makes us want to use the new Technical means, that is, BIM technology to improve or reduce the occurrence of problems.

For the contact network BIM model, there is the possibility that the model will be wrong due to manual modeling or over-modulation, and the accuracy of the model is also uncertain. Therefore, the research content of this paper includes the following aspects: First, in the contact network Based on the analysis of the current situation of BIM application and rule inspection research, the BIM-based contact network engineering model rule inspection process is summarized, which is the four stages of model preparation, rule interpretation, model review and review report, and the model verification process is verified by an example. Secondly, the automatic modeling and design system for constructing contact network engineering is proposed, and the component design, 3D circuit layout, pillar placement, assembly design, inventory statistics and generation technology route are proposed, and the 3D line coordinate calculation of key technologies in automatic modeling is proposed. The three-dimensional coordinate transformation and the SQLite database are introduced separately. Finally, the automatic modeling examples of the MZ railway contact network project were verified. The four modules of the contact network parameterized family library, line calculation, wrist arm assembly and material statistics were tested.

It can be seen from the results of the contact network BIM model test that the model can be detected by the established inspection process, indicating that the model is qualified or not, but the accuracy of the model is still difficult to master, and the automatic modeling tool can be well improved. The problem of model accuracy, to achieve auxiliary design, auxiliary construction site material management, including stocking and cutting. Integrating BIM technology into railway engineering is a global trend, and BIM technology can provide new tools and ways of thinking for contact network engineering.

Keywords: Contact Network   BIM   Model Inspection   Secondary Development Automatic Modeling