The two dimensional (2D) planimetric view of the axis of the transportation modals on the ground is called route. The process of the connecting two given points (start and end points of the route) generates various alternative paths based on geometric standards of the design of a route, in particular based on an appropriate longitudinal grade of vertical profile. In this article, a method that connects two given points is presented for corridor planning with resulting route elements based on a parameter estimation of geometric modeling. In this approach, the methodology offers an automatic connecting algorithm of two given points due to azimuth angle of the searched points, step interval and horizontal coordinate differences to draw the zero line, which helps to perform cut fill balance due to minimizing earthwork cost. By running the algorithm, the intermediate points between the two given points are obtained as polygon. The geometric elements of the result route, which is like a polygon route, are generated by parameter estimation, firstly, by applying polynomial regression and then fitting the route element estimation process. The feasibility and validity of the proposed method was shown in a case study with two different data sources, which also includes a processing stage for evaluating the horizontal alignment geometric elements. The results showed that the proposed methodology could be used as a guide, which helped to minimize the total earthwork balance in route planning facilities.
Key words: Route planning, earthwork cost, horizontal geometry, vertical geometry, optimization.
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