摘要:合川渠江景观大桥采用主跨400m的单主缆地锚式悬索桥，桥塔曲面造型复杂，主梁为变宽分离式扁平钢箱梁，为提高设计效率、保证设计质量，提出“R+GH+R”的BIM协同设计平台。借助二次开发实现不同软件平台间的信息交互，内置制模标准及构件编码体系，应用BIM技术进行全桥设计。在设计过程中，采用参数化批量建模、实时渲染、智慧出图、虚拟现实、3D打印及4D施工模型等技术，提升了设计质量和工作效率，同时也为桥梁三维设计的发展和应用实践积累经验。

Abstract: Hechuan Qujiang Bridge, with a main span of 400m, is a single main cable anchored suspension bridge with a complex surface pylon. The main girder is a separated flat steel box girder with variation in width. For the promotion of design efficiency and insurance of design quality, a new BIM-based collaborative platform named "R+GH+R" is proposed. By means of secondary development on Rhino and Grasshopper, information can be exchanged between different software systems within the platform. Through the built-in mold standard and component coding system, the BIM technology is adopted for the design of full bridge. During the design period, new technologies such as parametric batch modeling, real-time rendering, intelligent drawing, virtual reality, 3D printing and 4D construction model are applied, which improves the design quality and efficiency. The study in this paper also accumulates experience for the development and application of three-dimensional design of bridges with BIM technology.