Razširitev vozišča in svetlega profila ceste v horizontalnih krivinah na primeru gozdne ceste Mala voda v GGE Dobrova : diplomsko delo - univerzitetni študij

Škrjanec, Samo (author), Potočnik, Igor (mentor), Poje, Anton (comentor)

Razširitve vozišča in svetlega profila ceste v horizontalnih krivinah sta elementa, ki zagotavljata varen prevoz dolgega lesa po gozdni cesti. V diplomski nalogi se je želelo preveriti na konkretnem primeru gozdne ceste Mala voda ali ta dva elementa omogočata varno vožnjo različnih namenskih vozil, prevoz dolgega lesa z enoosno polprikolico in primerjati različne metode izračuna razširitev vozišča za kamion z enoosno polprikolico. Na terenu so bili izmerjeni potrebni geometrijski elementi za izračun horizontalnih radijev in središčnih kotov ter obeh razširitev gozdne ceste v horizontalnih krivinah. Pri analizah se je ugotovilo, da obstoječe razširitve vozišča ne dopuščajo vožnje nobenemu izmed kamionov za prevoz lesa. Razširitve svetlega profila gozdne ceste so zadostne za prevoz dolgega lesa z enoosno polprikolico po slovenski metodi, po avstrijski pa ne. Metode za določevanje razširitev vozišča so le delno primerljive. Izstopata slovenska in ameriška metoda, pri katerih so dobljene razširitve vozišča večje od ostalih. Predlaga se, da se metode določevanja velikosti razširitev vozišča gozdne ceste primerjajo s sodobnimi računalniškimi programi, in se po potrebi posodobijo. Razišče naj se dolžine lesa, ki se prevažajo po gozdnih cestah in na podlagi ugotovitev analizira potrebo po velikosti razširitev svetlega profila gozdne ceste in se ugotovi, katera metoda je bolj primerna.

• Language: Slovenian
• Keywords: gozdne ceste, razširitev vozišča, horizontalna krivina
• Work type: Undergraduate thesis
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [S. Škrjanec]
• Year: 2016
• Number of pages: X f., 58 f.
• PID: 20.500.12556/RUL-115144
• UDC: 630*3(043.2)=163.6
• COBISS.SI-ID: 4539558
• Publication date in RUL: 15.04.2020

Secondary language

• Language: English
• Title: Road widening and widening of clearence of a road cross-section in horizontal curves on the example of Mala voda forest road in FMU Dobrova

Abstract

The two elements of forest road that ensure safe transportation of long wood are road widening and widening of clearence of a road cross-section in horizontal curves. In this graduation thesis it has been tested, whether these two road elements enable different log trucks to drive on the forest road Mala voda, whether it is possible to transport long wood with a stinger type log truck on it.Comparison between different methods for calculating road widening was made. With field work the needed geometrical elements for calculating radii and central angles of the curves as well as both widenings have been measured. Through analysis, it has been established, that the current elements of the road do not allow the passing through for any of the log trucks and trailer combi-nations, that regarding the widening of clearence of a road cross-section, it is possible to transport long wood by Slovenian method, but not by Austrian method, and that similarities between 4 dif-ferent methods exist. The two methods, that give bigger road widenings than other methods are USA and Slovenian method. Comparison of methods with modern computer program methods for road widening in horizontal curves used in this thesis has been suggested, to determine if an up-date is needed. For widening of clearence of a forest road cross-section in horizontal curves, anal-ysis of wood length, transported on forest roads is suggested to determine, which of the two meth-ods is more appropriate, and if this widening is necessary at all.