DEVICE FOR MEASURING OPTICAL DEFORMATION OF LONG AND LARGE STRUCTURE

摘要

PROBLEM TO BE SOLVED: To solve such a problem that overall determination cannot be immediately done on a crane ship side or that maneuvering of the ship and adjustment operation of a crane might be erroneous when reporting is delayed in a construction to hang, carry and erect a long and large structure, such as a bridge where a monitoring person having full experience and measuring skills is arranged on land for measuring the deformation of the long and large structure and reporting the results to the crane ship side by radio since it is necessary to fully obtain the deformation of the long and large structure at each of operations of hanging, carrying and erecting and to maneuver the crane ship and operate the crane.;SOLUTION: When hanging, carrying and erecting the long and large structure, such as the bridge, an optical deformation measuring device is arranged on the long and large structure and deflection and torsion of the long and large structure entirely are measured. The measurement data is transmitted to the crane ship side by a radio data transmitter while on the crane ship side, the received deformation data of the long and large structure is operated and processed by an information processor and displayed on a display device. Thus, the displacement state of the long and large structure is measured and managed on a real time basis and the erection works can be done safely.;COPYRIGHT: (C)2008,JPO&INPIT