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タイトル: | Effects of a Macro-Roughness Element on Tsunami Wave Amplification, Pressures, and Loads: Physical Model and Comparison to Japanese and US Design Equations |
著者: | Tomiczek, Tori Prasetyo, Adi Mori, Nobuhito https://orcid.org/0000-0001-9082-3235 (unconfirmed) Yasuda, Tomohiro Kennedy, Andrew |
著者名の別形: | 森, 信人 |
キーワード: | Tsunami design bare-earth simulation JCO ASCE7 pressure impulse time-averaged load |
発行日: | Mar-2017 |
出版者: | World Scientific Publishing |
誌名: | Coastal Engineering Journal |
巻: | 59 |
号: | 1 |
論文番号: | 1750004 |
抄録: | Experiments were conducted at a 1:20 length scale in a large tsunami flume to measure wave evolution and pressures on and around structural elements. The water surface profiles of waves propagating across a bare beach were compared with those recorded in front of an onshore obstacle representing an urban macro-roughness element. The addition of a structure significantly changed the water surface profile for broken waves: the water surface amplification in the presence of a macro-roughness element reached seven times the bare-earth water surface elevation. Estimated pressures from design equations were calculated using recommended inputs and compared with pressures recorded by gauges installed on the structural elements. Design equations showed good agreement for non-breaking wave pressures but underestimated peak pressures for breaking waves. Likewise, force integrations of measured pressures on the experimental specimen indicated that design equations may underestimate loads due to waves that break offshore and propagate across a beach as a turbulent bore. The time-integrated pressure impulse was shown to be less sensitive to wave characteristics than the peak recorded pressures. Time-averaged loading curves were also developed for different average periods. |
著作権等: | ©The Author(s) This is an Open Access article published by World Scientific Publishing Company. It is distributed under the terms of the Creative Commons Attribution 4.0 (CC-BY) License. Further distribution of this work is permitted, provided the original work is properly cited. |
URI: | http://hdl.handle.net/2433/219473 |
DOI(出版社版): | 10.1142/S0578563417500048 |
出現コレクション: | 学術雑誌掲載論文等 |
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