纵横梁格构式体系桥梁的参数化设计

Parametric Design of Lattice System Bridge with Longitudinal&Transverse Beams

参数化设计是通过设置参数直接得到3D模型,后通过程序输出,将3D模型转化为2D图纸的1种方法。不同于先做出2D图纸,再对2D图纸进行翻模得到3D模型的传统方式,参数化设计方法具有高效、精确、灵活和自动化等优点。纵横梁格构式桥梁体系的参数化设计旨在实现结构性能、美观和功能的平衡,以满足通行需求和城市景观要求。设计流程包括:首先根据项目具体设计要求与项目地点倾斜摄影数据,通过参数化设计直接生成桥梁结构的3D模型;其次将3D模型导入MIDAS计算程序进行结构分析,根据计算结果的反馈,在GH参数化程序进行结构的迭代优化;最后通过出图软件输出施工图及BIM模型。在实际工程中参数化设计有利于提升计算模型的准确性,提升结构性能,提高设计效率。

Parametric design is a method to directly obtain 3D model by setting parameters and then convert 3D model into 2D drawing through program output.Unlike the traditional way of making 2D drawings first and then turning 2D drawings to get 3D models,the parametric design method has the advantages of high efficiency,accuracy,flexibility and automation.The parametric design of longitudinal and transverse beam lattice bridge system aims to achieve the balance of structural performance,beauty and function,so as to meet the traffic demand and urban landscape requirements.The design process includes:firstly,according to the specific design requirements of the project and the tilt photography data of the project site,the 3D model of the bridge structure is directly generated through parametric design;secondly,the 3D model is imported into MIDAS program for structural analysis.According to the feedback of the calculation results,the structure is iteratively optimized in GH parametric program.Finally,the construction drawing and BIM model are output by drawing software.In practical engineering,parametric design is conducive to improving the accuracy of calculation model,structural performance and design efficiency.