（重庆绿城两江建筑设计有限公司， 重庆 401121）

［摘要］本景观桥工程通过参数化设计实现了从建筑方案到结构设计及后期施工图的无缝衔接和高效配合，将不规则异形桥梁的几何数据有效运用于结构建模及分析中，更加平衡性地解决了桥体找形问题。通过力学分析手段，得到了大跨度钢桁架桥体承载力、变形、稳定性分析和舒适度分析等方面的结果。此外，利用有限元软件ANSYS，根据结构分析得到的杆件内力结果对支座处受力复杂的管桁架相贯节点进行了有限元分析，并验证了结构方案的合理性和安全性。

［关键词］大跨度； 景观桥； 参数化设计； 钢结构； 有限元分析

中图分类号：TU318文献标识码：A文章编号：1002-848X(2017)19-0048-05

Parametric design and structural analysis of a long-span landscape bridge

Zhou Bo, Huang Jia

(Chongqing Liang Jiang Greenton Architectural Design Co.,  Ltd.,  Chongqing 401121, China)

Abstract:The landscape bridge project realizes seamless transition and efficient cooperation from architectural design to structural design and late construction drawing design via parametric design. Geometry data of the irregular and heteromorphic bridge was effectively applied to structural modeling and analysis, and the problem of the bridge form-finding was resolved with a more balanceable method. Bearing capacity, deformation, stability analysis and vibration serviceability analysis of the long-span steel truss bridge were obtained by mechanical analysis means. Besides, on the basis of member internal forces in structural analysis, finite element analysis of tubular joint under complex force at supports of the steel tube truss was conducted by ANSYS, the rationality and security of the structural concept were verified as well.

Keywords:long-span; landscape bridge; parametric design; steel structure; finite element analysis

作者简介：周波，硕士，工程师，Email: zhoubo@gad.com.cn。