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钢箱梁顶推施工技术

摘要:实践证明,钢箱梁斜拉桥采用顶推法施工时,不需大型浮吊等起吊设备,占用场地小,钢箱梁顶推、边跨支架梁段安装和塔柱的施工可同时进行,提高施工效率,节约成本,充分显示了本桥施工方法的合理性、先进性与独创性。

Abstract: The practice proves that in construction of the steel box girder cable-stayed bridge using incremental launching method, we don’t need large floating cranes and other lifting equipment. For the occupied space is small, the construction of steel box girder incremental launching, edge across stents beam section and pillar can be conducted simultaneously which improve the construction efficiency, save the cost, show the reasonableness, advanced and originality of the bridge construction methods.

关键词:钢箱梁;顶推施工;施工控制

Key words: steel box girder;incremental launching construction;construction control

中图分类号:TU74 文献标识码:A文章编号:1006-4311(2010)34-0073-01

1顶推法施工

顶推法施工是在沿桥纵轴方向的台后设置预制场地,分节段预制梁,并将预制节段与施工完成的梁体连成整体,然后通过水平千斤顶施力,将梁体向前顶推出预制场地,然后继续在预制场进行下一节段梁的预制,直至施工完成。(剩余2351字)

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