基于Revit+Dynamo模式的异形人行斜拉桥BIM参数化建模技术

Research on BIM Parametric Modeling Technology of Special-Shaped Pedestrian Cable-Stayed Bridges Based on Revit+Dynamo Mode

随着经济快速发展,我国对桥梁景观需求日益迫切,因此空间结构复杂、曲线优美的桥梁应运而生。对于造型独特的桥梁,传统的BIM建模手段冗杂且建模效率低下,因此造型独特的景观桥梁设计建模过程一直是亟待解决的问题。通过将Revit软件与可视化编程插件Dynamo结合,针对某异形人行斜拉桥各构件的特点,创建了异形人行斜拉桥参数化族库,开发了异形人行斜拉桥相关的快速建模技术。该方式通过获取桥梁中心线的三维坐标点,编制桥梁构件参数化Excel表格,编制Dynamo程序导入各构件的参数和位置信息,实现空间异形桥梁各构件的快速布置及参数赋值,为复杂异形人行斜拉桥的建模方式提供了新思路。

With the rapid development of economy,demands for bridge landscape are becoming increasingly urgent in China,hence bridges with complex spatial structures and beautiful curves come into being.However,the traditional BIM modeling methods for creating bridges with unique shapes are complicated and its efficiency is low.Therefore,the design and modeling process of bridge landscape with unique shapes has always been a pressing issue.By combining the Revit software with the visual programming plug-in Dynamo,a parametric family library of the pedestrian cable-stayed bridge was created,and the rapid modeling technology related to the pedestrian cable-stayed bridge was developed according to the characteristics of each structural bridge of a special-shaped pedestrian cable-stayed bridge.This method achieves the rapid layout and parameter assignment of each component of the spatially shaped bridge by obtaining the three-dimensional coordinate points of the bridge centerline,compiling the bridge component parameterized Excel table and the Dynamo program to import the parameter information and position information of each component in the Excel table.Based on the mode“Revit+Dynamo”,the modeling efficiency of pedestrian cable-stayed bridges can be greatly improved,which promotes the implementation of BIM technology in complex landscape bridges,and provides new ideas for the modeling of complex human-shaped cable-stayed bridges.