Steel Anchor Beam Positioning Measurement Technology for Main Tower of Cable-Stayed Bridge River
The main bridge of cable-stayed Bridge river in Wulong river is complicated in structure,the precise positioning measurement of steel anchor beam in main tower is one of the key technologies of cable-stayed bridge.Which requires high precision of measurement and location,and is very difficult to measure.Several precise positioning methods for steel anchor beams of main Bridges are introduced.After a selection,finally,the steel anchor beam is precisely positioned by the total station 3D coordinate method,and the plane positioning is corrected by adding the deformation monitoring value of the main tower,the effect of earth curvature and refraction can be eliminated and reduced by elevation difference.This method not only meets the precision requirement,but also can work all-weather.The practice proves that the method is safe,efficient,economic and technologically advanced,and has remarkable social and economic benefits.
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