CORRECTION METHOD FOR UPWARD SHIFT AMOUNT, AND CORRECTION METHOD AND PROGRAM FOR UPWARD SHIFT AMOUNT

摘要

PROBLEM TO BE SOLVED: To reduce construction errors and improve construction accuracy, in a bridge construction process by a cantilever construction method.SOLUTION: In a correction method for an upward shift amount, a computer corrects an upward shift amount in a cantilever construction method in which a prescribed number of blocks is installed consecutively on a bridge pier. In the correction method for an upward shift amount, the computer performs the steps for: temperature influence calculation in which temperature data of a bridge girder is obtained and a deformation amount of the bridge girder is derived by using a standard value of deformation amount of bridge girders caused by temperature data stored in a memory section; actual value calculation in which an actual height of the bridge girder is derived by subtracting the deformation amount of the bridge girder obtained in the temperature influence calculation step from a measurement value of the height of the bridge girder measured for the existing block at an edge; and correction value calculation in which a difference is derived between a targeted height of the bridge girder and the actual height of the bridge girder, the targeted height being calculated on the basis of a design of the existing block at the edge, and a correction value is derived for correcting the difference, to be applied to each of the blocks from the block at the edge to all of the remaining blocks of the prescribed number.