Differential Jacking Control Technology for Curved Steel Box Girder Based on Gradient Radius Difference
When the traditional jacking construction technology is used for the jacking construction of curved steel box girder,it is nec-essary to adjust the angle of the horizontal roof and the slideway,and constantly carry out manual rectification of the jacking route.The rectification is difficult,the construction technology is complex,and the construction risk is high.In order to ensure that the steel box girder can move along the designed line,a differential push control theory based on gradient radius difference is proposed,and a differ-ential push control system is developed based on the differential push control theory.In the process of pushing,the main control com-puter of the differential pushing control system regulates the proportion of the oil inlet flow by controlling the pump station,which makes the two pushing equipment have a pushing distance difference in the process of pushing,thus realizing the steel box girder to move ac-cording to the design line,so as to meet the needs of pushing construction under the condition of curved path.
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