预应力混凝土箱梁施工

Construction of Pre-stress Concrete Box Girder

通过对梨树园蒲石河大桥箱梁的预制施工,全面总结了从箱梁立模、混凝土浇注到预应力钢束张拉、灌浆、封锚全过程的施工工艺,提供了相应的施工方法、混凝土配合比、振捣时间和预应力张拉等各种技术数据。

Through the box girder prefabrication construction of Pushi River Bridge in Pear Tree Garden,the construction technology from formwork erection of box girder and placing of concrete to stretching,grouting and anchor sealing of pre-stress steel beam is summarized.Technical data such as relevant construction methods,proportioning of concrete,vibrating of concrete and pre-stress stretching are provided.