2017 Fiscal Year Final Research Report
Investigation on Seismic Response of long-span bridges considering connection behavior of collision and stick-slip in nearfield earthquake
| Project/Area Number |
15K18104
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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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 | Yokohama National University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 斜張橋の地震応答 / パウンディング / 衝突のモデル化 / 三次元吊形式橋梁モデル / 地震応答 |
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| Outline of Final Research Achievements |
The research is aimed at investigating seismic responses characteristics of long-span cable-supported bridges with focus on the connection between pylon and girder, considering effect of sliding and pounding. The study focuses on Yokohama-Bay bridge where seismic responses from long-term monitoring system data-base from 1989 consisting of more than 50 earthquake records are available. The study was conducted using numerical model, three-dimensional finite element model of the structure and system identification of the seismic responses. The connection behavior in longitudinal direction is modeled as non-linear slip-stick mechanism in Yokohama-Bay bridge In transverse direction, pylon-girder transverse pounding was observed on both bridges during large earthquakes. Pounding mechanism was modeled using structural model by adding pounding induced stiffness and damping.
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| Free Research Field |
構造工学・地震工学・維持管理工学
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