落布溪大桥拱上连续梁施工技术探讨

Discussion on Construction Technology of Arch Continuous Beam of the Luobuxi Bridge

钢管混凝土劲性骨架拱桥在公路行业应用较广泛,但在铁路桥中应用较少。以钢管混凝土作为劲性骨架的铁路拱桥在国内更是屈指可数。由于铁路活载大,故铁路拱桥从设计到施工都比较复杂,且铁路范围内没有成熟的施工经验和铁路行业标准。结合落布溪大桥成功建设,探讨了拱上连续梁的施工工艺、施工难点及解决措施,可为今后同类型铁路桥梁的施工提供参考和指导。

Arch bridges with stiff steel pipe concrete fl＇amework are widely applied in the highway bridges. But not so wide- ly in the railway bridges, especially in China. The heavy railway load makes the design and the construction complicated and difficult. Yet there are no industry standards and mature construction experiences. This paper mainly discusses the construction difficulty and technology of the continuous beam for the arch bridge, and it can serve references for the design and construction of similar projects of the same structures.