THE EXAMINATION OF COLLISION SPEED REDUCTION EFFECT OF TSUNAMI DEBRIS AT THE TIP OF RUNUP WAVE BY REFLECTED WAVE
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- MURASE Fumiya
- 清水建設株式会社
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- WATANABE Masashi
- 中央大学 理工学部都市環境学科
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- HIRAISHI Koushi
- 中央大学 理工学部都市環境学科
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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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- 遡上津波先端部における漂流衝突速度の反射波による低減効果の検討
- ソジョウ ツナミ センタンブ ニ オケル ヒョウリュウ ショウトツ ソクド ノ ハンシャハ ニ ヨル テイゲン コウカ ノ ケントウ
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Description
<p> We conducted a hydraulic experiment in case that tsunami debris set on the land model. The tsunami debris was drifted at the tip of a runup wave and collided with the reflection wall. Then, we examined the effect of reducing the collision speed due to the buffer effect which occurred at the tip of the runup wave that firstly collided with the reflection wall. We also conducted experiments under the several conditions to examine why the length of reflected waves become increase. We examined the effect of the water mass against the collision probability and the collision speed under the condition that the runup wave and the water mass reflected by the wall coexist. In addition, it became possible to evaluate the collision velocity from "the reduction rate of the drift speed due to the reflected water mass" and "the length of the reflected water". Furthermore, we succeeded to evaluate the collision velocity using the theoretical equation of reducing collision speed in the reflected wave, quantitatively.</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_685-I_690, 2020
Japan Society of Civil Engineers