たわみ角を管理指標として用いた鉄道橋の健全度評価手法に関する一考察

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  • A study of railway bridges soundness evaluation method using deflection angle as a management indicator
  • タワミ カク オ カンリ シヒョウ ト シテ モチイタ テツドウキョウ ノ ケンゼンド ヒョウカ シュホウ ニ カンスル イチ コウサツ

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The purpose of this study is to establish a soundness evaluation method about the railway bridges, especially the bearing parts which is emphasis inspection parts of bridges. Inspecting the bearing parts often meets many difficulties of environments such as height, narrowness, and invisibleness about some important parts. To secure proper chances of diagnosis in enough-well investigated of bridges safety, thus we succeeded in high-precision measuring small displacements by both contactless and remote circumstances with sampling moire cameras which we developed. Then we proposed deflection angles as a quantitative figure which enable new advanced management method of safety conservation of railways, and verified the measured value of deflection angle and the usefulness of the precision of this method.

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