教師資料查詢 | 類別: 期刊論文 | 教師: 鍾志成 JYH-CHERNG JONG (瀏覽個人網頁)

標題:Improvements to a Sight Distance Algorithm
學年89
學期1
出版(發表)日期2001/01/01
作品名稱Improvements to a Sight Distance Algorithm
作品名稱(其他語言)
著者Lovell, D. J.; Jong, J. C.; Chang, P. C.
單位淡江大學運輸管理學系
出版者New York : American Society of Civil Engineers
著錄名稱、卷期、頁數Journal of Transportation Engineering 127(4), pp.283-288
摘要This paper describes improvements developed for an existing algorithm that calculates sight distance profiles based on horizontal geometry. Exact expressions are developed for vector derivatives for plane curves including clothoid spirals. Coordinate and derivative vectors are developed for partial spirals that possess nonzero curvature at both ends, frequently used as transitions between circular curves of different radii. As with complete spirals, the coordinate vectors are approximate and the derivative vectors are exact. Finally, an exact method for measuring distance along an offset curve to a clothoid spiral is developed. Taken together with the results in a previous referenced paper, this represents a complete recipe for computing sight distance profiles along arbitrary horizontal alignments. A numerical example is included to illustrate the use of the algorithm.
關鍵字
語言英文
ISSN0733-947X
期刊性質國外
收錄於SCI;EI;
產學合作
通訊作者
審稿制度
國別美國
公開徵稿
出版型式,紙本
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