公开(公告)号：US10215549B2

公开(公告)日：2019-02-26

申请号：US15459506

申请日：2017-03-15

申请人： Tokyo Electric Power Company Holdings, Incorporated

发明人： Yuuji Tagawa ,  Kazunari Kashima ,  Chikara Morooka ,  Hideharu Oniki ,  Yuya Niidome ,  Makoto Koide ,  Teppei Kishida ,  Takeya Nakajima ,  Hiroyuki Abe ,  Hideharu Osoguchi

IPC分类号： G01B5/20 ,  G01M99/00 ,  G01B5/14 ,  G01B5/30 ,  G01B3/02

摘要： A method for measuring a deflection amount of a columnar structure includes the following steps. The method includes placing a longitudinal direction of a columnar structure in a direction parallel to a ground to place the columnar structure on a support member that supports the columnar structure such that the columnar structure is rotatable around an axis in the longitudinal direction; determining that the columnar structure placed has stopped rotating under its own weight around the axis; and measuring, after the stop of the rotation is determined, measuring a distance in a vertical direction between a straight line connecting both ends in the longitudinal direction of the columnar structure and a curved line along a shape in the longitudinal direction of the columnar structure.