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題名 | 以基因演算法為基礎之雙匝道交流道平面線形最佳化模式=A Genetic Algorithm Model for Optimizing Horizontal Alignments of a Two-Ramp Interchange |
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作者 | 林蓁; 李宇欣; Lin, Jen; Lee, Yusin; |
期刊 | 中國土木水利工程學刊 |
出版日期 | 20071200 |
卷期 | 19:4 2007.12[民96.12] |
頁次 | 頁587-600 |
分類號 | 442.25 |
語文 | chi |
關鍵詞 | 高速公路; 交流道; 匝道; 平面線形; 克羅梭曲線; 基因演算法; Highway; Interchange; Ramp; Horizontal alignment; Clothoid curve; Genetic algorithm; GA; |
中文摘要 | 高速公路幾何設計極繁複且需大量運算,雙設計線公路之平面線形則由須同時考量兩設計線於空間中之相對關係而更為複雜,此類問題又以交流道匝道系統之平面線形設計為最。由於其複雜性,以人工設計要完全滿足各種規定已屬難事,更無法有系統地尋找優良設計。故雙設計線平行線形最佳化設計的數學模式與高效率的求解方法,對降低設計成本及幾何設計自動化極為重要。本研究以探討雙匝道之交流道平面線形設計問題為主,並重新分析匝道平面線形的基本元素,歸納一匝道之平面線形以反曲點畫分後,任兩連續反曲點間基本元素之組合之規則性,後依平面線形之局部曲率半徑變化情形重新定義數種平面線形設計元素,並以基因演算法為基礎建立模式。利用其廣域搜尋的優點,求解雙匝道平面線形最佳化問題,以在滿足規範要求之下求得雙匝道交流道優良之平面線形。 |
英文摘要 | The work of highway geometric design is very complicated and consumes significant amount of labor, time and cost. For the design of the horizontal alignments of a double-lined highway system, the design demands greater complexity because the relativities of the two alignments in the system need to be considered simultaneously. Due to the design complexity, it is thorny to get a feasible solution to meet all code requirements manually for engineers, let alone to systematically search for better designs. In order to reduce the design cost and enable automatic computerized design, it is necessary to develop mathematical models to look for the optimized geometric design for of the horizontal alignments of a double-lined highway system. This research focuses on solving the problems inhering in the horizontal alignments of a double-lined highway system. By analyzing the basic elements for the horizontal alignment of the ramp and cumulating the regularity of the basic elements between two inflection points, it is possible to define several new ramp elements. Then, a model is built up based on the genetic algorithm developed by redefining the new basic elements for horizontal alignments according to the variation of the partial curvature radius. The advantage of the proposed method is to get a good solution under all constrains in the design of the horizontal alignment for a two-ramp interchange system. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。