山岭地区预应力混凝土连续刚构桥边跨现浇段托架法施工技术研究

Research on the bracket method construction of the cast-in-situ section of the side span of the prestressed concrete continuous rigid frame bridge in the mountainous area

文章针对甘肃地区卧龙沟3#特大桥边跨现浇段托架法施工进行研究,介绍了边跨现浇段托架法的施工工艺及技术要求,根据边跨现浇段的长度、宽度、混凝土施工容重,利用空间有限元软件Midas分析计算了托架整体的受力稳定性,并对边跨现浇段的托架搭设、钢筋模板安装、混凝土浇筑做了简要的介绍,对边跨现浇段托架法同类工程顺利施工具有参考意义。

This paper studies the bracket method construction of the cast-in-situ section of the side span of Wolonggou 3#extra-large bridge in Gansu area,and introduces the construction technology and technical requirements of the bracket method for the cast-insitu section of the side span.The width and concrete construction bulk density are analyzed and calculated by the spatial finite element software Midas,and the overall stress stability of the bracket is calculated.It is of reference significance for the smooth construction of similar projects across the cast-in-place bracket method.