可搬型 X-band 950 keV 電子ライナック X 線源を用いた橋梁健全性評価の研究

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  • Structural Analysis and Evaluation of Bridge using Mobile X-band 950 keV Electron Linear Accelerator X-ray Source
  • カハンガタ X-band 950 keV デンシ ライナック Xセン ゲン オ モチイタ キョウリョウ ケンゼンセイ ヒョウカ ノ ケンキュウ

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In Japan, bridges constructed during the strong economic growth era are facing an aging problem and advanced maintenance methods have become strongly required recently. To meet this demand, we develop the on-site inspection system using 950 keV/3.95 MeV X-band (9.3 GHz) linac X-ray sources. These systems can visualize in seconds the inner states of bridges, including cracks of concrete, location and state of tendons (wires) and other imperfections. On detecting corrosion of tendons, it was confirmed that our linac system has sufficient inspection accuracy. At the on-site inspections, 950 keV linac exhibited sufficient performance and visualized the inner state of concrete bridge. Structural analysis was also performed to evaluate the bearing capacity of the bridge using finite element method.

収録刊行物

  • 保全学

    保全学 16 (4), 65-70, 2016

    日本保全学会

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