MEASUREMENT SYSTEM FOR BUILD-IN ERROR OF STEEL PIPE, MEASUREMENT METHOD FOR BUILD-IN ERROR OF STEEL PIPE, AND BUILDING-IN METHOD FOR INVERTED CONSTRUCTION COLUMN

摘要

PROBLEM TO BE SOLVED: To facilitate an installation operation for a device used to measure a build-in error of a steel pipe, and to measure the build-in error while correcting a build-in attitude of the steel pipe.;SOLUTION: There is provided a system 100 which measures a build-in error of an inverted construction column built in a foundation on the basis of a position of a target 50 provided in the inverted construction column 10. The system includes a camera 110 installed in the head of the inverted construction column 10 so as to photograph the target 50, an inclinometer 120 installed in the head of the inverted construction column 10, and a computer 130 which extracts the position of the target 50 on the basis of imaging information of the camera 110, calculates an angle of inclination of an optical axis 112 of the camera 110 to a perpendicular axis on the basis of a measured value of the inclinometer 120, and corrects the position of the target 50 on the basis of the calculated angle of inclination.;COPYRIGHT: (C)2013,JPO&INPIT