Method for measuring deflection of columnar structure and method for determining performance of columnar structure

摘要

The method of measuring the amount of deflection of a columnar structure is such that the columnar structure is placed on a support member that supports the columnar structure so as to be rotatable about an axis in the longitudinal direction with the longitudinal direction of the columnar structure being parallel to the ground. After the placement step to place, the stationary determination step for determining that the rotation around the axis due to the weight of the columnar structure placed in the placement step is stationary, and after the stationary of the rotation is determined in the stationary determination step And a measuring step for measuring a vertical distance between a straight line connecting both ends in the longitudinal direction of the columnar structure and a curve along the longitudinal shape of the columnar structure.