Mechanism of damage-induced local damping and structural health monitoring of bridges based on damping change
| Project/Area Number |
23246082
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Structural engineering/Earthquake engineering/Maintenance management engineering
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| Research Institution | Saitama University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
MATSUMOTO Yasunao 埼玉大学, 大学院理工学研究科, 教授 (90322023)
OKUI Yoshiaki 埼玉大学, 大学院理工学研究科, 教授 (40214051)
ASAMOTO Shingo 埼玉大学, 大学院理工学研究科, 准教授 (50436333)
MUTSUYOSHI Hiroshi 埼玉大学, 大学院理工学研究科, 教授 (60134334)
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| Project Period (FY) |
2011-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥42,250,000 (Direct Cost: ¥32,500,000、Indirect Cost: ¥9,750,000)
Fiscal Year 2014: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Fiscal Year 2012: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2011: ¥15,860,000 (Direct Cost: ¥12,200,000、Indirect Cost: ¥3,660,000)
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| Keywords | 構造工学・維持管理工学 / 土木材料 / モニタリング / 振動減衰 / 橋梁健全度評価 / 腐食 / 減衰解析 / model updating / 構造工学・地震工学 / 高減衰ゴム支承 / PC橋 / 亀裂 |
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| Outline of Final Research Achievements |
Damages (such as tension crack, corrosion and partial fracture) and damage –induced local damping increment in steel member, concrete member and steel-concrete interface are first experimentally studied to discuss the mechanism of local damping increased by local damages. The evaluation method of structural health condition for steel, RC and PC bridges is then proposed by developing a hybrid method of experimental and analytical modal syntheses based on ambient vibration measurement and global damping change monitoring. The method of ambient vibration measurement is carefully studied for optimizing it as a system and the identification of global damping change in bridges is refined with FE model updating method. How to implement the proposed method of bridge health evaluation to the Bridge Management System was finally discussed.
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Report
(5 results)
Research Products
(25 results)
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[Presentation] Damage detection based on modal damping change in bridges2012
Author(s)
Yamaguchi, H., Matsumoto, Y., Kawarai, K., Dammika, A.J, Shahzad, S., Takanami, R.
Organizer
The 2nd Int. Conf. on Sustainable Built Environment
Place of Presentation
Kandy (Sri Lanka)
Related Report
Invited
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