How to Adopt Robot Technology into Legal Periodic Inspection of Long-span PC Bridge in Japan?
Various advantages are expected to be brought about by adopting robot technology (RT), such as drone (UAV) systems, into the legal periodic inspection of bridges.These include reduction of traffic congestion at the time of inspection, improvement of safety of inspection work, accumulation of detailed information about bridges, and cost reduction.However, the adoption has not been realized in Japan.We are adopting RT into the legal periodical inspection of Kakamigahara Bridge in Kakamigahara City, Gifu, Japan in 2018.Problems await this unprecedented program, such as conforming the inspection to the rules, ascertaining the characteristics and evaluating the performance of RT, and combining different RTs.Based on the guidelines (draft) proposed by our committee, we planned to adopt two-step inspections.In the first step, preliminary survey is carried out by using RT.In the second step, close visual inspection is conducted on the whole bridge by utilizing the results of the preliminary survey.Performance requirements were established for RT.The performance of RT was then verified by comparison with the results of conventional visual inspection.For the RT, we requested that its performance allows us to judge whether or not the soundness class of the structural member under inspection is Ⅱ or higher, which requires follow-up observation or repair.In the preliminary survey, a RT system combining three drone systems and two robot camera systems was used.We proposed a method in which one drone system detects damage other than concrete cracks on the entire bridge from a short distance and then the robot camera systems and the other drone systems with a high-resolution camera detect concrete cracks.
maintenance bridge inspection drone robot
R.Hasuike K.Kinoshita H.Hatano E.Furusawa K.Rokugo
Gifu University, Gifu, Japan Teikoku Inc., Gifu, Japan
国际会议
福州
英文
1199-1206
2018-11-04（万方平台首次上网日期，不代表论文的发表时间）