EXPERIMENTAL STUDY ON THE INFLUENCE OF SUSPENDED SILT AND SAND ON TSUNAMI FORCE
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- KISE Koshu
- 中央大学大学院 理工学研究科都市人間環境学専攻
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- ARIKAWA Taro
- 中央大学 理工学部都市環境学科
Bibliographic Information
- Other Title
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- 土砂・シルトを含んだ津波の波力に関する実験的研究
- ドシャ ・ シルト オ フクンダ ツナミ ノ ハリョク ニ カンスル ジッケンテキ ケンキュウ
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Abstract
<p> When tsunami contains sediments, its wave force become strong due to increase of its density. This has a great influence on building damages. The sediment diameter collected from the tsunami at the time of the 2011 Tohoku-oki earthquake remained in Kesennuma City, Miyagi Prefecture was 6.74 µm, which is classified as silt. Tsunami wave force which contains sand sediments or silt has not been investigated. In this study, we conducted laboratory experiments on tsunami containing sediment. We then showed the tendency by investigating wave force, coefficient of wave pressure, angle of water surface, and its density. As a result, when density of tsunami was increased, it is likely that tsunami wave force become high and angle of wave front become variable when tsunami collides with vertical wall. We also showed that it is likely that wave pressure of tsunami is relatively increased when tsunami contains sediments even if Froude number is same.</p>
Journal
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- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
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Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 76 (2), I_385-I_390, 2020
Japan Society of Civil Engineers
