Research on Key Technology of Alignment Measurement and Control for Prefabricated Segmental Beam with Short-line Method
The alignment control of segmental beam prefabrication by short-line matching method is a prerequisite for the alignment of cantilever assembled bridge to meet the design requirements.During construction,the beam will deflect due to the changes in geometric dimensions and elevations,resulting in changes in vertical and horizontal alignment.Through the research on the linear control theory and spatial coordinate conversion method of segment beam,the precise control method and error analysis method of segment beam matching adjustment are given to achieve the precise matching of spatial coordinates between adjacent segments.
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