复杂环境下钢箱梁顶推转体组合施工技术分析与应用

Analysis and Application of Combined Construction Technology of Steel Box Girder Pushing and Rotating Under Complex Environment

对先顶推-后利用临时支墩进行体外转体的桥梁施工方法和内容进行详细阐述,对临时转体墩、临时支架以及钢梁的状态进行了受力分析和监测。该方法的成功实施克服了利用临时转体墩进行体外转体的施工难题,达到了缩短工期,节约成本的目的,同时能够减少对铁路线运营的影响。

This paper describes in detail the construction methods and contents of the bridge which first pushes and then uses the temporary support pier to carry on in vitro rotation,carries out the stress analysis and monitoring of temporary rotating pier,temporary support and steel beam.The successful implementation of this method overcomes the construction problem of using temporary turning-block pier for external turning-block,shortens the construction period,saves the cost,and reduces the influence on railway operation.