頁籤選單縮合
題 名 | 複合形渠道之最佳水力斷面分析=The Best Hydraulic Section Analysis of Compound Shaped Channels |
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作 者 | 葉一隆; | 書刊名 | 國立屏東科技大學學報 |
卷 期 | 6:3 1997.09[民86.09] |
頁 次 | 頁217-222 |
分類號 | 443.5 |
關鍵詞 | 複合形渠道; 最佳水力斷面; Compound shaped channel; Best hydraulic section; |
語 文 | 中文(Chinese) |
中文摘要 | 無論灌溉或排水渠道之設計,必需考慮流速以避免淤積或沖刷外,尚需考量工 程費,以期工程在安全條件下,能以最經濟之費用完成。目前常用之渠道有梯形斷面與矩 形斷面渠道,而本文探討將此兩種斷面形式組合成一複合斷面,並推導最佳水力斷面,分 析在相同輸水量下,分別比較梯形斷面,矩形斷面,半圓形斷面與本文所探討之複合斷面 之材料經濟性與所需使用土地量,由本文分析得知複合形斷面之斷面積與潤周較矩形斷面 與梯形斷面為小。但比半圓形斷面為大,即以材料及土方論,複合形斷面較目前採用之梯 形斷面與矩形斷面為經濟,就土地使用量而言,複合形斷面較梯形斷面減少14-426%之土 地面積。 |
英文摘要 | The lowest velocity for prevented sedimentation and vegetative growth has to be considered for open channel designed no mater for irrigation or drainage; besides, the structure may be constructed under safe and economical conditions. The trapezoidal section and rectangular section are usually used in open channel design. In this paper, the section that combined trapezoidal section and rectangular section to form a compound section is discussed and drove the best hydraulic section formulas. To compare the cost of material and land use of trapezoidal section, rectangular section, semicircular section, and compound section that is required to convey a specified flow. The cross-section area and wetted perimeter of compound section are less than those of trapezoidal section and rectangular section, that is, the compound section is more economically. For the land use, the compound section is less than trapezoidal section approximately 14.426%. |
本系統中英文摘要資訊取自各篇刊載內容。