頁籤選單縮合
題名 | 沿壁沖射流理論應用於橋墩局部沖刷之研究 |
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作者 | 連惠邦; 蔡桂郎; 林昆志; | 書刊名 | 逢甲學報 |
卷期 | 24 1991.11[民80.11] |
頁次 | 頁431-451 |
分類號 | 443.046 |
關鍵詞 | 沖刷; 沖射流; 沿壁; 橋墩; |
語文 | 中文(Chinese) |
中文摘要 | 本研究由橋墩局部沖刷之機理出發,突破傳統分析方法,利用橋墩壁面下降之沖射 流理論,並合併水流之推移力,推估沖刷平衡時,其相對深度與各無因次參數間之關係。經 分析試驗資料與理論推導間已獲得良好之結果,其變化規律將有助於對河道局部沖刷歷程之 瞭解及橋樑設計。 |
英文摘要 | This research is based upon the principle of the local scour of bridge pier. The research method is different from tradition, this study use clinging jet flow theorem of bridge piers wall surface descent, and match the tractive force of water flow, to predict the relation between the scour hole and dimensionless factors when the scour hole have got balance. Results of laboratory experiments concerning the development of equilibrium depths of local scour at cylindrical bridge piers have obtained good agreement with theoretical derivation. This paper thus lays theorectical ground for studies of dimensionless factors, concerned about the local scour of bridge piers, shall be helpful to understand the local scour process of the channel and engineering design for bridge. |
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