摘要
资兴高速公路青云大桥施工处地形复杂,工期短,在全面考虑桥梁的结构形式、墩高、施工器材等多种因素,施工选用在其墩身架设临时悬臂式三角托架施工方式进行青云大桥0#、1#块施工,并决定采用反向预应力张拉体系进行托架预压。以此次工程为例,阐述了高墩大跨度T型刚构桥托架的设计方案,包括托架施工的设计原理、托架的数值建模及计算分析、托架反向预应力张拉体系设计原理,以及相应的施工方案,对同类路桥工程有一定参考意义。
Due to the development of expressway construction,more and more difficult bridges appear.Qingyun Bridge is one of the most important and difficult projects of Zixing Expressway.The construction has complex terrain but short construction period.Considering the structural form,pier height and construction equipment of the bridge,the temporary cantilever triangular bracket construction mode of pier body is chosen to construct the plot 0#and the plot 1#.The bracket is preloaded with reverse prestressing tension system.Based on the general situation of this case,the design scheme of bracket of T-type rigid frame bridge with high pier and large span is elaborated in this paper,including the design principle of bracket construction,the numerical modeling and calculation analysis of bracket,the design principle of bracket reverse prestress tension system,and the construction scheme,offering reference for similar road and bridge projects.
作者
黄胜方
HUANG Sheng-fang(Huaibei Vocational and Technical College,Huaibei 235000,China)
出处
《浙江水利水电学院学报》
2019年第4期53-59,共7页
Journal of Zhejiang University of Water Resources and Electric Power
基金
2019年度安徽高等学校自然科学研究项目(KJ2019A0993)
关键词
悬臂式
三角托架设计
施工
反向预应力
cantilever type
design of triangular bracket
construction
reverse prestressing
作者简介
黄胜方(1981-),男,安徽砀山人,硕士,副教授,高级工程师,主要研究方向:工程施工与监理、建筑结构抗震与加固、工程造价等
