摘要
国内铁路预应力混凝土连续梁采用预制胶结拼装法施工的不多。结合郑阜铁路周淮特大桥跨新运河三联(40+56+40)m预应力混凝土连续梁施工,从控制网的建立、测点的设置、首浇段及待浇段的测量控制等方面,对梁体长线法分节段预制的测量方法进行了介绍。实践表明该测量方法易于操作,精度可控,技术先进。
It is very infrequent that railway pre-stressed continuous concrete girder bridges are built by means of the pre-castingcementing-assembling method right now in our country.With the tri-linked 40+56+40 mpre-stressed continuous girder of the Zhou-Huai Mega Bridge of the Zheng-Fu Railway across the New Canal as a practical example,introduced in the present paper is the measuring method for the girder body that is section-by-section-pre-cast by means of the Long-Line Method,from the angles of establishing the control net,setting up the measuring points,the measuring control of the first cast section and the sections to be pre-cast,and the like.Practice shows that the measuring method is easy to operate,controllable in accuracy and advanced in technology.
作者
张立欣
ZHANG Lixin(The 2nd Engineering Co.,Ltd.of the 18th Bureau Group of China Railway,Tangshan 064000,China)
出处
《国防交通工程与技术》
2019年第1期44-46,3,共4页
Traffic Engineering and Technology for National Defence
基金
中国铁路总公司科技研究开发计划重大课题(2016G002-H)
关键词
连续梁
长线法
预制
测量控制
continuous beam
long-line method
pre-cast
survey control
