A method for measurement of state quantities of long-body sensor complex using spline function

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  • スプライン関数を用いた長体状態量計測法
  • スプライン カンスウ オ モチイタ チョウタイ ジョウタイリョウ ケイソクホウ

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Abstract

We have developed a new practical method to obtain both geometric and mechanical information on the ground and the buried structures such as displacement, deformation and load by setting a long-body sensor complex into the ground and measuring its inclination and strain at each point. This method, called the spline measurement method, utilizes the long-body sensor complex and a spline function of B-spline basis. We have conducted not only numerical simulations, but also bending experiments of long-bodies at both laboratory and in-situ site using actual pipes. Measurement of active landslide was also carried out. The applicability of proposed method was widely examined in addition to referring to the principle and theory of spline measurement. Discussions were made on adopting conditions, accuracy and further problems of proposed method.

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