2015 Fiscal Year Final Research Report
Development of long distance three-dimensional measurement system of deformation and strain for bridge maintenance
Project/Area Number |
26630211
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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Research Institution | Nagaoka University of Technology |
Principal Investigator |
Miyashita Takeshi 長岡技術科学大学, 工学(系)研究科(研究院), 准教授 (20432099)
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Project Period (FY) |
2014-04-01 – 2016-03-31
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Keywords | 写真測量 / 画像計測 / 橋梁 / ひずみ / たわみ / 維持管理 |
Outline of Final Research Achievements |
This research aims to develop a photogrammetry system that makes possible to measure three-dimensional behavior of a whole bridge. Firstly, a camera calibration method was developed, and close-distance measurement in a laboratory setting revealed that an accuracy of the system attained about 1 mm. Then, a photogrammetry system using two high-speed cameras was developed, and applied to deformation measurement of a steel welding box column under compressive force. As a result, errors of deformation in the vertical and horizontal directions became about 0.1 mm. Finally, although it remains challenges relating to a long-distance measurement at present, the feasibility of the developed system has been sufficiently confirmed. Therefore, it is of great significance that foundation for long-distance measurement has been established through this research.
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Free Research Field |
維持管理工学
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