长山大桥工程主桥为双塔双索面三跨预应力混凝土矮塔斜拉桥，主跨260m，为国内同类型桥梁最大跨径。主梁采用预应力混凝土单箱三室流线型扁平箱梁。文章就主梁合拢段施工作简要介绍。%The main bridge of Changshan Bridge is twin towers and double cable planes three-span prestressed concrete extradosed cable-stayed bridge, whose main span is 260m, so it has the largest span in the same type of bridge. The main beam uses the prestressed concrete single box three rooms streamlined flat box girder. This paper briefly introduces the construction of main beam closure section.
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