Cable Saddle Installation Survey Technology of the Kilometer-level Suspension Bridge for Highway and Railway
The main span of the Wu Fengshan Yangtze River Bridge is 1092m.It is the world's first kilometer-level large-span steel truss suspension bridge for highway and railway.The main cable saddle and splay saddle,as important structures supporting the main cable of suspension bridges,directly affect the bridge shape,and have the characteristics of large volume,difficult adjustment of spatial attitude,and high positioning accuracy requirements.Firstly,carry out plane and elevation penetration survey on the two main towers,eliminating the impact of construction control point positioning errors,improve relative positioning accuracy.Using the measurement results of the penetration survey of the main bridge as the survey benchmark,arrange reasonable survey points,accurately locate the bottom plate,anchor bolts,base,and saddle body of the cable saddle.Precisely measure and adjust the spatial position of the main cable saddle grille,lower support plate,upper support plate,and saddle body.The accurate positioning of the main cable saddle and the splay saddle provides a guarantee for the bridge alignment of the kilometer-level steel truss suspension bridge.
万方数据
维普
