Study on corrosion status and health evaluation of small steel bridge in island peninsula area by using 3D photograph measurement and FE analysis

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560585
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Structural engineering/Earthquake engineering/Maintenance management engineering
• Research Institution: Nagasaki University
• Principal Investigator: MORITA Chihiro 長崎大学, 工学研究科, 准教授 (60230124)
• Co-Investigator(Kenkyū-buntansha): MATSUDA Hiroshi 長崎大学, 工学研究科, 教授 (20157324) ; OKUMATSU Toshihiro 長崎大学, 工学研究科, 准教授 (30346928)
• Co-Investigator(Renkei-kenkyūsha): DEMIZU Akira 長崎大学, 工学研究科, 技術職員 (00533308) ; MAKINO Kohei 長崎大学, 工学研究科, 産学官連携研究員 (80568478) ; WATANABE Yusuke 長崎大学, 工学研究科, 産学官連携研究員 (20600555)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 長寿命化 / 維持管理 / 小規模鋼橋梁 / ワッペン式曝露試験 / 三次元FE解析

Outline of Final Research Achievements

The corrosion situation of the small steel bridge which a local government manages is not grasped much. In this study, corrosion survey and health evaluation of small steel bridge in island peninsula area was carried out. Moreover, the extracted bridge at island was performed long-term corrosion predicted by exposure test using small samples.
Next, three-dimensional FE analysis was performed for different structural forms of steel bridges, the results were compared with the natural frequencies recorded using LDV (Laser Doppler Velocimeter). These results obtained by 3D-FE analysis are verified to be in good agreement with measurement results.

Free Research Field

構造力学、維持管理工学