公路立交BIM参数化快速精确建模方法研究

Research on Fast and Accurate Modeling Method of BIM Parameterization for Highway Interchange

公路立交工程自身空间结构复杂、曲线交叉繁杂、跨桥线路复杂、桥面高程变化繁多等特点,给建模工作造成了极大的困难,大型立交桥的设计建模工作一直是工程界亟待解决的问题。采用BIM相关软件,针对公路立交工程的特点,通过将BIM相关建模软件与可视化编程插件Dynamo相结合的方法,详细论述了实时可编辑地形模型、主体结构精度模型以及批量附属设施的三维模型快速搭建方法。并通过具体操作实例证明该方法能提高公路立交BIM模型的搭建效率,可推动BIM技术在公路立交工程中的应用。

For the highway interchange project,because of its own complex spatial structure,miscellaneous intersection of curves,and complicated route across bridges,as well as the frequently varied elevation of bridge floor,great difficulties have been caused to the modeling work,and the design and modeling of large overpasses have always been a problem which urgently needs to be resolved in engineering field.Using BIM related software,according to the characteristics of highway interchange engineering,through the method of combining the BIM related modeling software with the visual programming plug-in Dynamo,this study discusses in detail the rapid construction method of real-time editable terrain model,main structure precision model and 3D model of the batch auxiliary facilities.The specific operation examples have shown that this method can improve the construction efficiency of the road interchange BIM model,there by promote the application of BIM technology in highway interchange engineering.