Discussion on Methods of Traffic Routes' Alignment Survey and Application of Principle of Least Squares
Proceedings of the 9th International Conference of Chinese Transportation Professionals, ICCTP 2009: Critical Issues in Transportation System Planning, Development, and Management(2009)
摘要
Traffic route's alignment survey is among the important works required in location survey stage. This paper concisely introduces both conventional and contemporary techniques of traffic route's alignment survey. It also analyzes and discusses the question that while traffic route's alignment survey is being conducted by conventional diagrammatic method (or called offset method), how to improve the accuracy of diagrammatized centerline stations' coordinate parameters for staking-out by the principle of least squares to reduce the workload of repeatedly threading, checking on and adjusting the laid-out centerline stations. Finally, the authors draw the conclusion that the laid-out traffic route's center line stations based on staking-out coordinate parameters obtained by the principle of least squares are able to satisfy the required tolerance of location survey of traffic route's centerline stakes. © 2009 ASCE.
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关键词
alignment,least squares,surveying method,traffic route
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