双层公铁两用钢桁架拱桥施工关键技术

随着现代社会经济发展与城市化历程加快，交通量不断加大，交通问题日趋严重。在靠近城市、铁路公路的桥梁建造过程中，为降低造价和缩短周期，通常考虑建造一座公铁两用桥。以某项目桥梁工程为例，分别从项目策划、现场布置、工地吊装等方面详细阐述公铁两用钢桁架拱桥施工关键技术。总结公铁两用钢桁架安装技术要点，为类似项目中钢桁架拱桥施工提供思路。

Key Construction Technology of Double-deck Highway-Railway Steel Truss Arch Bridge

With the development of modern social economy and the acceleration of urbanization, the traffic volume is increasing and the traffic problem is becoming increasingly serious. In the process of bridge construction near the city, railway and highway, in order to reduce the cost and shorten the cycle, it is usually considered to build a highway-railway combined bridge. Taking a bridge project as an example, the key construction technologies of railway-highway steel truss arch bridge are expounded in detail from the aspects of project planning, site layout, site hoisting and so on. The technical essentials of erecting the railway-highway steel truss, which provides some ideas for the construction of steel truss arch bridges in the similar projects.