斜交桥梁三维参数化造型研究

摘要

斜交桥梁在桥梁总数中所占比重仅次于正交桥梁。斜交桥梁的三维造型对桥安全检测信息的可视化、记录、组件二维展开图的绘制等有着重要的研究意义。研究了斜交角的存在对桥梁部件、组件及整桥拼接过程的影响，并对桥梁模型三维参数化设计过程进行分析和总结。在此基础上，对梁式桥上部结构、下部结构和整桥拼接的三维参数化设计过程进行了研究。并基于以上研究实现了斜交桥梁的三维可视化。实践表明，该方法可有效解决斜交桥梁的三维造型问题，且具有桥梁参数化设计彻底，建模速度快，可灵活应对多样化建模需要，模型三维仿真度高的特点。%Among all the bridges,skew bridge is the second majority only next to the right bridge,and the 3D modeling of the skew bridge plays a key role in the bridge inspection and maintenance,which includes the visualization of the bridge,the recording of inspection and maintenance information,and the drawing of the 2D components.The influence of the skew angle to the bridge parts,components and processes of the entire bridge splicing was researched,and the process of the 3D parametric model bridge were also analyzed and summarized. After that,the up part and the lower part of the bridge structure and the 3D parametric design stitching process of whole bridge was studied, which realized the 3D visualization of skew bridges.Practices show that the proposed method not only solve the problem of 3D modeling of Skew Bridges more effectively but also have the characteristics of thorough parametric design,rapid modeling,flexible responding to diverse requirements of modeling,and high model 3D simulation.