BIM技术在树型拓扑结构空间洞库工程设计中的应用探索

Application of Building Information Modeling in Design of Cavern Project with Tree Topology Structure

为解决树型拓扑结构空间洞库工程多专业、多管线、多交岔、多断面等空间设计难点,依托某洞库工程研究及实践应用,分析BIM技术应用要点,基于Revit与Navisworks软件平台,梳理并建立洞库工程三维建模技术路线及流程。其中,重点研究参数化拱圈和房间接头、喇叭口等复杂结构的三维建模方法,解决管线与预留预埋不对应、埋地管线与底坑冲突、管线穿拱顶受力构件等问题。研究及实践应用表明:1)通过拱圈公制轮廓参数化族,实现一族通用,大幅度提高数字化设计中断面选型效率;2)BIM软件的可视化特点、空间碰撞干涉检查原理,可为房间接头和喇叭口等复杂结构选型提供理论支撑,有效规避洞库工程设计的差错漏碰问题,达到优化设计目标;3)基于构件空间几何信息与属性信息,可自动生成洞库部分工程量统计表与二维图,提高设计与交付效率。

Design of tree topology cavern project often faces the challenges of multi-discipline,multi-pipeline,multiintersection,multi-section,etc.Relying on a cavern project,the main points of building information modeling(BIM)technology are summarized,and through Revit and Navisworks software platform,3 D modeling technical route and process of cavern project are sorted out and defined.The 3 D modeling method of some complex structures like parametric arch ring,room joint and Y-joint is mainly studied,which solves the problems of mismatch between pipeline and reserved buried pipeline,conflict between buried pipeline and bottom pit,and pipeline passing stress component of vault.The practical results show that:(1)The efficiency of section selection in digital design is greatly improved by realizing a family of common arch contour parameterization.(2)The visualization characteristics of BIM software and the principle of collision interference check provide theoretical support for the selection of complex structures such as room joints and Y-joint,and effectively avoids design error and omission.(3)Based on the geometric information and attribute information of components,some volume statistics and 2 D diagram can be generated automatically,which significantly improves the design and delivery efficiency.