PERFORMANCE EVALUATION OF UUMANNED AERIAL VEHICLE FOR EMERGENCY BRIDGE INSPECTION AFTER EARTHQUAKE

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  • ENDO Kodai
    東北大学大学院 工学研究科都市・建築学専攻
  • DANG Ji
    埼玉大学大学院 理工学研究科環境社会基盤国際コース
  • HARUTA Daijiro
    埼玉県庁 川越県土整備事務所

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Other Title
  • 地震時応急橋梁点検に活用する汎用小型無人機(UAV)の必要性能評価
  • ジシンジ オウキュウ キョウリョウ テンケン ニ カツヨウ スル ハンヨウ コガタ ムジンキ(UAV)ノ ヒツヨウ セイノウ ヒョウカ

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 Investigation and inspection of damage in road and railway bridges after earthquake disaster are oftenly required to take urgent measures to restore the system at an early stage. Also, in mountainous areas, it is difficult for people to access the long span bridges or its high piers after a disaster. It is also difficult to conduct emergent or routine survey for those parts of bridges. Recently, the visual inspection method using general-purpose Unmanned Aerial Vehicle (UAV) is considered as useful for the structural damage detection. In this research, the basic performance for a few type of UAVs were tested by conducting a series of simple flight tests. The inspection performance under wind condition of UAVs were tested by Wind Tunnel tests. A simple wind resistance estimation formula from the wind tunnel test result is proposed. To qualitatively evaluate the performance of UAV for bridge inspection, the Performance Index (PI) for UAV in bridge inspection, considering its Operational, Safety, and Visual-sampling performance, was also proposed. Real bridge inspection verification test using UAV was conducted to examined the effectiveness of this PI.

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