2015 Fiscal Year Final Research Report
INTEGRITY ASSESSMENT OF STEEL BEAM-COLUMN CONNECTIONS USING AMBIENT-BASED INNER-FORCE ESTIMATES
| Project/Area Number |
26820230
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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 |
Building structures/Materials
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Keywords | 損傷評価 / 地震被災 / 鋼構造 / 構造ヘルスモニタリング |
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| Outline of Final Research Achievements |
In this research, a methodology for determining the post-earthquake strength of a steel moment-resisting frame with beam-column fractures based on local monitoring data was established. The proposed methodology was explained and verified experimentally using a unique testing system for beam-column connections. First, a damage index of steel beam fracture based on dynamic strain responses and an associated sensing system using PolyVinylidene DiFluoride (PVDF) sensors and wireless communication modules were introduced. Then, a model updating technique where the identified damage is reflected in a numerical model of the structure was explored. Based on the updated model, the damage in the structure was further translated into the structure’s deterioration in terms of stiffness and strength. The model updating approach bridges the gap between damage information and residual structural capacity evaluation and facilitates rapid decision-making immediately following an earthquake.
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| Free Research Field |
建築耐震工学
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