摘要
伴随我国高速公路建设不断加快,预应力砼变截面箱梁在高速公路桥梁中被广泛使用。当其主跨跨径较小、墩高较矮、地形平坦、无不良地质情况时,同时可采用挂篮悬臂浇筑和支架现浇施工两种工法。本文以漳武线永定至南靖高速公路南靖段工程鸿砵大桥为例,通过对其主跨(40+60+40)m预应力砼变截面连续箱梁两种施工方法的比较,对设计过程中的主梁构造、施工步骤、结构受力等情况分析进行了详细介绍,可为今后同类型桥梁工法选择提供一定依据。
With the acceleration of highway construction in China, prestressed concrete variable section box girder is widely used in highway bridges. When the main span is small, the pier height is low, the terrain is flat, and there is no adverse geological conditions, two construction methods can be used at the same time, namely, hanging basket cantilever pouring and support cast-in-situ construction. Taking Hongbo Bridge of Nanjing Section of Yongding Nanjing Expressway of Zhangwu Line as an example, this paper compares two construction methods of prestressed concrete variable section continuous box girder with a main span of(40+60+40) m, and introduces in detail the main girder structure, construction steps, structural stress, etc. in the design process, which can provide a certain basis for the selection of construction methods of the same type of bridges in the future.
作者
史隽健
SHI Jun-jian(Fujian Communications Planning and Design Institute Co.,Ltd.,Fuzhou 350004,China)
出处
《价值工程》
2022年第35期77-79,共3页
Value Engineering
关键词
预应力砼变截面连续箱梁
悬臂浇筑
支架现浇
桥梁设计
prestressed concrete variable cross-section continuous box girder
cantilever casting
cast in situ support
bridge design
