摘要
本文研究的五峰山长江大桥全长6.4km,主桥全长1428m,为(84+84+1092+84+84)m钢桁梁公铁两用悬索桥,是我国首座公铁两用悬索桥,也是目前世界上荷载最重、行车速度最快的公铁两用悬索桥。桥梁工程规模巨大、体系复杂、结构轻柔、位移量及结构内力较大、安全性十分重要等显著特点。在温度、风及列车等荷载作用下,桥梁会产生较大的变形,从而引起桥上轨道结构发生变形,形成较大的轨道几何不平顺。研究测点位移的因素,指导CPⅢ控制网测设。
The Wufengshan Yangtze River Bridge studied in this paper has a total length of 6.4km,and the main bridge has a total length of 1428m,which is(84+84+1092+84+84)m steel truss beam dual-purpose suspension bridge.It is the first dual-purpose suspension bridge in China,and also the world's heaviest load and fastest driving speed of dual-purpose suspension bridge.Bridge engineering is characterized by large scale,complex system,soft structure,large displacement and internal force of structure,and very important safety.Under the load of temperature,wind and train,the bridge will have a large deformation,which will cause the deformation of the track structure on the bridge,forming a large geometric irregularities of the track.The factors of measuring point displacement are studied to guide the measuring design of CPIII control network.
作者
刘战彪
LIU Zhan-biao(The 3rd Engineering Co.,Ltd of China Railway 17 Bureau Group Corporation,Shijiazhuang 050081,China)
出处
《价值工程》
2021年第16期111-113,共3页
Value Engineering
关键词
五峰山长江大桥
悬索桥
CPⅢ
测点位移因素
Wufengshan Yangtze River Bridge
suspension bridge
CPⅢ
measuring point displacement factor
