| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an excitation position measurement jig for measuring the position of horizontal and multidirectional excitation in a short time with respect to a columnar structure having an arbitrary diameter. <P>SOLUTION: An excitation position measurement jig has an extendable bellows-like structure constituted by multiple arms 6 which are mutually connected and have the same length, in which hinge mechanisms 8 to be actuated to fully close the opening of the arms 6 by arranging coil springs in order to apply contraction force on the bellows-like structure and hinge mechanisms 8 having rotation rollers 10 are alternately arranged at the connection parts of the respective arms 6, and arm connection part 7 is arranged in the arms 6 on the both ends of the bellows-like structure. When measurement is performed, the both ends of the bellows-like structure are connected by the arm connection part 7 by winding the bellows-like structure around a concrete pole 1. Thus, the jig is fixed to the concrete pole 1 in a form where the rollers 10 are brought into contact with the side surface circumference of the concrete pole 1. <P>COPYRIGHT: (C)2013,JPO&INPIT |
