基于数据驱动的桥梁快速建模方法研究

Data-driven based method for bridge rapid modeling

为实现桥梁二维设计方案向三维设计方案的快速转换,并适应方案的频繁修改及建模的多样性、复杂性,提出了基于数据驱动的桥梁快速建模方法。根据CAD数据,提取并计算线路和桥梁中线的三维空间信息、桥梁跨度坐标信息和桥跨里程;采用BIM(Building Information Modeling)二次开发技术,实现了基于设计方案和地形信息的全线多样性参数化建模;采用构件规则约束和空间包围盒集成方法,对模型几何参数、空间位置进行自动复核检查和调整,实现了桥梁构件模型的精确定位和无缝拼接。该研究为高速铁路桥梁自动化和智能化建模提供了一种新的解决方案,也为其他类型的桥梁建模提供了参考。

In order to implement rapid conversion from 2D design schemes to 3D design schemes for bridges,and adapt to frequent modifications of schemes and the diversity and complexity of modeling,this paper proposed a datadriven based method for rapid modeling of bridge.The paper extracted and calculated the three-dimensional spatial information,bridge span coordinate information,and bridge span mileage of the route and bridge centerline based on Computer-Aided Design(CAD)data,used Building Information Modeling(BIM)secondary development technology,implemented a diversified parametric modeling of the entire line based on design schemes and terrain information.By using component rule constraints and spatial bounding box integration methods,the geometric parameters and spatial positions of the model are automatically reviewed,checked,and adjusted,the paper implemented precise positioning and seamless splicing of bridge component models.This study provides a new solution for the automation and intelligent modeling of high-speed railway bridges,as well as a reference for modeling other types of bridges.