| 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 |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Nagaoka University of Technology |
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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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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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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 / 変形 / 全視野 |
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| 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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