SEISMIC RESPONSE OF A LONG-SPAN CABLE-STAYED BRIDGE SUBJECTED TO INTERMITTENT AFTERSHOCKS
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- MAGOSHI Kazuya
- 名城大学大学院 理工学研究科
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- GE Hanbin
- 名城大学 理工学部社会基盤デザイン工学科
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- MOTOHASHI Hideki
- 株式会社地震工学研究開発センター
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- NONAKA Tetsuya
- 株式会社地震工学研究開発センター
Bibliographic Information
- Other Title
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- 断続的な余震を受ける長大斜張橋の応答特性
Abstract
Intermittent aftershocks can occur in a long period after a strong mainshock. There is a high risk that aftershocks may result in further damage to structures damaged in main-shocks, and hamper retrofitting of important structures.<br>This paper aims to clarify seismic response of a long-span cable-stayed bridge damaged by a mainshock, subjected to intermittent aftershocks. Seismic analyses of the bridge subjected to a mainshock, and followed artificial successive aftershocks are conducted. Based on the analysis results, the structural safety and serviceability of the bridge are evaluated with the consideration of both the effect of the main-shock and aftershocks. As it is difficult to predict aftershocks as accurately as mainshocks, due to complicated mechanisms to induce aftershocks, the magnitudes of aftershocks are inferred using a simple magnitude evaluation formula in terms of distance, based on the statistical analysis of the aftershocks of the 2011 off the Pacific coast of Tohoku Earthquake.
Journal
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- Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM))
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Journal of Japan Society of Civil Engineers, Ser. A2 (Applied Mechanics (AM)) 70 (2), I_603-I_612, 2014
Japan Society of Civil Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390282680328248192
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- NII Article ID
- 130004961390
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- ISSN
- 21854661
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed