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題 名 | 整合式公路縱坡度與爬坡車道配置最佳化模式=Integrated Model for Optimal Highway Vertical Alignment and Climbing Lane Allocation |
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作 者 | 李宇欣; 伍裕華; | 書刊名 | 中國土木水利工程學刊 |
卷 期 | 11:3 1999.09[民88.09] |
頁 次 | 頁529-542 |
分類號 | 442.1 |
關鍵詞 | 公路設計; 最佳化設計; 混合整數規劃; 爬坡車道; Highway design; Optimal design; Mixed integer programming; Climbing lane; |
語 文 | 中文(Chinese) |
中文摘要 | 公路幾何設計的過程繁複且涉及大量數據運算,需耗費可觀的人力、時間與費 用。在地形坡度較陡峭的路段,增設爬坡車道可放寬規範對主線的最低速限,使設計者可採 行較陡峭的縱坡度設計,減少工程中挖填土方的費用,卻也必須為較寬的道路橫斷面付出較 高的道路工程與用地費用。實務上,不同方案間的比較是由工程師為之。本研究利用混合整 數規劃的方法發展一數學模式,決定符合規範之最佳化公路縱坡設計與爬坡車道配置的方案 。經求解數個測試例,驗證本模式可處理公路縱坡度與爬坡車道設置之設計問題。 |
英文摘要 | Vertical alignment design is an important issue in the highway geometric design process. Even with today's array of sophisticated computer software, determining the vertical alignment of a highway remains an art and relies mostly on the judgement of experienced engineers. The work becomes even more complicated when climbing lanes come into play. Speed of heavy vehicles is a major consideration in highway vertical alignment. While climbing lanes relax the limits on steep slopes, and thus potentiall reduce earth and construction costs, the additional lane itself consumes land and cost as well. In practice, it is up to the design engineer to evaluate between the choices. In this research, we develop a mixed integer programming model that determines optimal highway vertical alignment and climbing lane allocation simultaneously. The applicability of the model is demonstrated in several numerical examples. |
本系統中英文摘要資訊取自各篇刊載內容。