钢拱梁组合结构在城市景观桥中的设计与应用

Design and Application of Steel Arch-Beam Composite Structures in Urban Landscape Bridges

摘要:

为满足城市景观桥梁交通功能与城市艺术形象展示的双重核心需求，同时应对地铁盾构与桥梁结构平面共线带来的复杂空间边界影响，以上海市临港新片区浦港大道冬涟河桥新建工程为例，初步探讨了钢拱梁组合结构在城市门户景观桥梁中的设计方法与工程应用。通过对结构景观表达的优化与比选，确定钢拱梁组合结构为桥梁设计方案。创新性地在钢拱结构中融入 “腾云” 设计理念，实现景观美学与力学功能的深度耦合。其设计思路与实施路径为中小跨径城市景观桥梁提供了兼具安全性、经济性和适用性的实践范例，丰富了同类工程结构选型与景观融合的技术体系。

Abstract:

To meet the dual core demands of urban landscape bridge transportation functions and the display of urban artistic images, while dealing with the complex spatial boundary influence brought about by the plane collinearity of the metro shield and the bridge structure, and taking the newly-built Donglianhe Bridge on Pugang Avenue in the Lingang Special Area in Shanghai as an example, the design methodology and engineering application of steel arch-beam composite structures in landscape bridges of urban gateway are initially discussed. Through the optimization and comparison of structural landscape expressions, the steel arch-beam composite structure is identified as the bridge design scheme. The design concept of “cloud soaring” is innovatively integrated into the steel arch structure, achieving the in-depth coupling of landscape aesthetics and mechanical functions. The proposed design ideas and implementation paths provide a practical paradigm characterized by safety, economy and applicability for small-span and medium-span urban landscape bridges, which enrich the technical system for structural type selection and landscape integration in similar projects.