菱湖大桥总体设计及创新点

Overall Design and Innovation Essentials of Linghu Bridge

摘要:

随着现代化建设的推进，人们生活水平不断提高，桥梁工程不仅仅满足交通功能需求，同时也承担着提升城市景观的重要作用。而中承式拱桥因结构形式灵活多样而在城市桥梁中得到了广泛的应用。菱湖大桥是一座位于无锡市的跨京杭运河城市景观桥梁。菱湖大桥采用三跨中承式系杆拱桥，跨径布置100 m+183 m+100 m，主梁采用钢-混凝土组合梁，主拱采用钢桁架拱。通过对项目概况、方案设计及结构体系、主要结构设计等主桥总体设计要点及设计创新点的论述，阐述了中承式系杆拱桥设计过程中需要关注的要点，为同类城市景观桥梁的设计提供参考意义。

Abstract:

With the advancement of modernization and the continuous improvement of people's living standard, the bridge engineering not only meets the needs of traffic functions, but also plays an important role in improving the urban landscape. The half-through arch bridge has been widely used in urban bridges because of its flexible and diverse structure. Linghu Bridge is an urban landscape bridge across the Beijing - Hangzhou Canal in Wuxi City. Linghu Bridge is a three-span half-through bowstring arch bridge with the span layout of 100 m+183 m+100 m. The girder is a steel-concrete composite girder, and the main arch is a steel truss arch. Through the discussion of the overall design and innovation essentials of the main bridge in the project overview, scheme design, structural system and main structure, the essentials to focus on during the design of the half-through bowstring arch bridge are expounded, which provides the reference for the design of similar urban landscape bridges.