Impact of vehicle movement simulation on the size of forest road traveled way widening in small radius curves

• Published in: Glasnik Sumarskog fakulteta - Univerzitet u Beogradu (1987) Vol. 2015; no. suppl.; pp. 131 - 140
• Main Authors: Stojnic, Dusan, Janic, Milorad, Zlatanovic, Milorad, Stefanovic, Bogdan
• Format: Journal Article
• Language: English
• Published: Belgrade University of Belgrade, Faculty of Forestry 2015; Faculty of Forestry, Belgrade
• Subjects: circular curves; earthworks; forest roads; traveled way widening; vehicle movement simulation
• ISSN: 0353-4537; 2217-8600
• DOI: 10.2298/GSF15S1131S

Smooth movement of vehicles on forest roads necessarily requires widening of
the traveled way in small radius curves. This paper presents the results of a
comparison of two methods for determining the required widening of a forest
road traveled way in small radius curves: the traditional method based on
formulas and the traces curve method, obtained by simulating the movement of
vehicles. Both methods were applied in the preparation of the Main project of
reconstruction of the forest road ?Rasadnik - Pustinac? with a length of
5.285 km in the teaching base of the Faculty of Forestry ?Majdanpecka
domena?. In the project which determined the traveled way widening by the
traces curve method, the total area of the surfacing was by 2.79% smaller
than the area of the surfacing in the project which determined the widening
using a formula. The width of the traveled way directly affected the scale of
earthworks. In the first case, the volume of the cut was by 4.17% lower than
in the second one. The volume of the filling decreased by 7.05%, and the
amount of material needed for making the surfacing decreased by 2.94%. A
smaller volume of earthworks and material required for pavement construction
in the preparation of the Main project of reconstruction, in which the size
of widening was calculated by the traces curve method, influenced the
estimated value of reconstruction is lower by 3.34% than the total cost of
reconstruction obtained in the preparation of the Main project of the same
forest road reconstruction that calculated the widening size using the
traditional method.
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