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| 題 名 | 新型設置導流板之直立開孔式結構物的消波特性初期研究=A Preliminary Study on Wave Dissipations of a New Vertical Perforated Structure Equipped with Guide Plates |
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| 作 者 | 林炤圭; 連晧宇; 張維庭; 蔡世璿; 李大鴻; 林蔚; 林鵬; 阮天野; 陳池威; 陳德鋼; 楊升耀; 楊輝斌; 歐陽榮桓; | 書刊名 | 海洋工程學刊 |
| 卷 期 | 17:4 2017.12[民106.12] |
| 頁 次 | 頁245-268 |
| 分類號 | 443.3 |
| 關鍵詞 | 直立式消能結構物; 沉箱; 導流板; 摺葉板; 反射率; Vertical perforated structure; Caisson; Guide plate; Flap plate; Reflection coefficient; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 本文提出了一種能提升直立開孔式結構物消波能力的新構想,利用在海側岸壁開孔部的內側安裝活動式或固定式的導流板,藉此導引波浪進入消波室後的方向與運動,並促使水體由下方波動力較小的孔洞排出,以減少波浪的直接反射,而達到提升結構物消波能力的目標。研究是以規則波水工模型斷面試驗方式進行,主要測試了直立狹縫型沉箱、上斜板型、下斜板型及摺葉板型開孔沉箱,並以堤前反射率作為評估指標。試驗結果與其他消能式結構物相比較發現,新型結構物對短週期波浪的消波能力大致雷同,其中以下斜板型表現最佳,上斜板型次之,摺葉板型則因配重問題需再改善;對於長週期波也有很好的消波效果,其中又以摺葉板型為最佳。綜合研究成果確認利用內建導流板及提升消波式的排水功能有助於改善消能結構物的消波功能。 |
| 英文摘要 | In this study, a new vertical perforated structure equipped with different types of guide plate inside the wave absorption compartment is examined. The guide plate first interrupts the incoming wave motion and then discharges the intruding water flow from the lower openings where the incoming wave motion is weak. With such mechanism, the reflection waves caused by the returned flow can be reduced for a better wave tranquility. Several new types of structures were tested via hydraulic model tests in a wave flume, including a perforated caisson equipped with up-slope plates, down-slope plates, and flap-plates at the openings, and also a slit-type caisson. The results show that the redirection of the returned wave flow can effectively improve the wave dissipation ability of a perforated structure. All new types of structures tested have similar wave dissipation abilities as existing perforated structure for short period wave conditions. Within these new types of structures, the down-slope plate performs better than the up-slope plate. As the performance of the flap-plate is highly dependent on its weight, this type needs further study. For longer wave period conditions, however, all new types of structures have better performance than the existing structures, and the flap-plate type structure has the best performance. All these preliminary study results and the experiences are useful for the future development and improvement of these new types of structures, and have practical applications. |
本系統中英文摘要資訊取自各篇刊載內容。