基于顶推施工的连续钢箱梁桥设计及关键技术

Design and Key Technology of Continuous Steel Box Girder Bridge Based on Incremental Launching Construction

摘要:

连续钢箱梁作为一种常用的桥梁结构形式，具有跨越能力强、施工周期快、景观效果好等特点。近年来随着桥梁施工方法及能力的发展，采用顶推施工的钢箱梁桥也越来越多。以扬州市扬子津路润扬河大桥为例，详细介绍了采用顶推施工的连续钢箱梁的结构设计及其关键技术，建立桥梁的有限元模型，对桥梁运营及施工阶段结构受力进行分析，并对设计合理性进行阐述，可为同类型桥梁设计及施工提供参考。

Abstract:

As a common bridge structure, the continuous steel box girder has the characteristics of strong spanning capacity, fast construction period and good landscape effect. In recent years, with the development of bridge construction methods and capacity, more and more steel box girder bridges are constructed by incremental launching. Taking Runyang River Bridge in Yangzijin Road of Yangzhou City as an example, the structural design and key technology of continuous steel box girder constructed by incremental launching are introduced in detail. The finite element model of bridge is established to analyze the structural stress of the bridge in operation and construction stages. And the rationality of the design is expounded, which can provide reference for the design and construction of similar bridges.