悬臂浇筑法在斜拉桁架桥施工中的应用  

Application of Cantilever Casting Method in Construction of Cable-stayed Truss Bridge

作　　者：高强[1] GAO Qiang(China Railway 18th Bureau Group the 5th Engineering Co.,Ltd,Tianjin 300459,China)

机构地区：[1]中铁十八局集团第五工程有限公司,天津300459

出　　处：《石家庄铁路职业技术学院学报》2020年第4期30-34,共5页Journal of Shijiazhuang Institute of Railway Technology

摘　　要：斜拉桁架桥是在连续梁桥的基础上,结合了斜拉桥与桁架桥的受力特点变化而来的,其优点有结构自身轻、刚度大,跨越能力强,是一种具有竞争优势的新式桥型。然而,在该类型的桥梁施工中,还存在许多施工关键技术问题有待研究。本文依托一座预应力混凝土斜拉桁架桥,详细介绍了悬臂浇筑法在本桥施工中的应用,对典型的施工工艺做了详细探讨,归纳总结了斜拉桁架桥悬臂浇筑法的施工工艺及关键技术,并对悬臂浇筑施工平台进行了计算分析,为今后类似桥梁工程的施工提供技术指导和经验。The cable-stayed truss bridge is based on the continuous beam bridge,combined with the changes in the force characteristics of the cable-stayed bridge and the truss bridge.It has the advantages of light structure,large rigidity,and strong spanning ability.It is a new bridge type with competitive advantage.However,in this type of bridge construction,there are still many key technical issues to be studied.Relying on a prestressed concrete cable-stayed truss bridge,this article introduces the application of cantilever pouring method in the construction of this bridge in detail,discusses in detail the typical construction technology,and summarizes the construction technology and key points of the cantilever pouring method of the cable-stayed truss bridge Technology,calculation and analysis of the cantilever pouring construction platform,to provide technical guidance and experience for the construction of similar bridge projects in the future.

关 键 词：悬臂浇筑 斜拉桁架桥 施工工艺 关键技术 

分 类 号：U445.466[建筑科学—桥梁与隧道工程]