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Axle load on roundwood truck transport unit in relation to load, set type, season and gross vehicle weight

Trzciński Grzegorz, Tymendorf Łukasz

Drewno : prace naukowe, doniesienia, komunikaty

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2022

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Vol. 65, nr 210

art. no. 1644-3985.419.08

EN

In round wood transport, high variability of transported assortments, made of different tree species, and variability of wood moisture content do not allow to clearly determine the weight of transported raw material. This affects the exceeding gross vehicle weight (GVW) of the transport unit above the legal limit. With significant GVW exceeding, forest roads are exposed to high tonnage vehicles, which results in vehicle axle loads above the accepted design parameters for the pavement and cause faster degradation of the forest roads. The purpose of this study was to investigate the real axle loads of roundwood transport vehicles arising from the gross vehicle weight (GVW) of the transport unit in different seasons of the year and depending on the type of transport set and the type of wood assortments. Measurements of axle loads for round wood truck transport units were carried out on the sites of three large wood industry companies from the north of Poland, which process different types of wood. The load on the individual axles of high tonnage truck units was measured using Model DINI ARGEO WWSD portable truck scales with a 3590M309 weighing terminal with 0.01 t graduation. In total, measurements were taken for 904 round wood deliveries, made by different transport units. Dominated was truck and trailer set with 473 deliveries, including 344 deliveries by six-axle sets. The second most frequently observed was truck and semi-trailer, 334 deliveries, where 193 was made by six-axle sets. There is a decrease in the use of truck and dolly and truck and lightweight semi-trailer combinations, which were five-axle combinations, for round wood deliveries. The lowest axle load for all sets occurs on axle one in the range of average values of 7.07-7.86t with a spread of results from 4.49 to 10.20t. The highest average axle loads of 9.15-12.43t were found on axle two for all observed transport sets, where a maximum value of 14.52t was also found. There were statistically significant differences in the values of loads on individual axles depending on the type of truck unit, type of wood assortment and delivery date. The distribution of the total gross vehicle weight of the set is on average 58-60% to the truck (three axles) and 40-42% to the trailer/semi-trailer (two axles) in five-axle sets, and in six-axle sets the truck and trailer/semi-trailer (three axles).

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Analiza wydajności procesu wywozu drewna stosowego

Dobek M., Paszko M.

Autobusy : technika, eksploatacja, systemy transportowe

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2017

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R. 18, nr 6

607--611, CD

PL

W niniejszym artykule przeprowadzono analizę wydajności procesu wywozu drewna stosowego środkami transportu drogowego. Na podstawie badań przeprowadzonych w prywatnej firmie zostały określone wskaźniki techniczno-eksploatacyjne jednostki transportowej. Dzięki otrzymanym wskaźnikom możliwe było określenie kondycji firmy oraz sprawności organizacji prac wywozowych.

EN

The paper presents the analysis of effectiveness of stacked wood transportation by road transport. On the basis of research conducted in private company, the technical and exploitation indicators of transport unit were determined. Thanks to those indicators, it was possible to conclude company’s condition and its level of transportation organization.

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Floods at the northern foothills of the Tatra Mountains — A Polish-Swiss research project

Kundzewicz Z.W, Pińskwar I., Choryński A., Stoffel M, Ruiz-Villanueva V, Ballesteros-Canovas J.A, Kaczka R.J, Niedźwiedź T, Łupikasza E, Czajka B., Małarzewski Ł., Janecka K, Wyżga B, Mikuś P.

Acta Geophysica

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2014

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Vol. 62, no. 3

620--641

EN

The present paper introduces the topical area of the Polish–Swiss research project FLORIST (Flood risk on the northern foothills of the Tatra Mountains), informs on its objectives, and reports on initial results. The Tatra Mountains are the area of the highest precipitation in Poland and largely contribute to flood generation. The project is focused around four competence clusters: observation-based climatology, model-based climate change projections and impact assessment, dendrogeomorphology, and impact of large wood debris on fluvial processes. The knowledge generated in the FLORIST project is likely to have impact on understanding and interpretation of flood risk on the northern foothills of the Tatra Mountains, in the past, present, and future. It can help solving important practical problems related to flood risk reduction strategies and flood preparedness.

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Analiza łańcucha dostaw surowca drzewnego

Marciniec T., Szkoda M

Autobusy : technika, eksploatacja, systemy transportowe

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2013

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R. 14, nr 3

1497-1506

PL

Artykuł przedstawia krótką charakterystykę rynku transportu drewna w Polsce oraz analizę łańcucha dostaw surowca drzewnego do odbiorcy przemysłowego. W strukturze łańcucha dostaw wyodrębniono podmioty zaangażowane w przepływ drewna oraz najistotniejsze procesy logistyczne. Uwzględniono dwuetapowy proces transportowy, w którym pierwszy etap transportu realizowany jest za pomocą transportu samochodowego, natomiast etap drugi z wykorzystaniem transportu kolejowego.

EN

The article presents short description of wood transport market in Poland as well as analysis of wood delivery chain to industrial consumer. In delivery chain structure the following items were isolated: subjects involved in transfer of wood and the most essential logistic processes. The two-stage transport process was taken into consideration where the first stage is realized with car transfer and the second one uses railway transfer.

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Organizacyjne i techniczne uwarunkowania transportu drewna na poziomie nadleśnictwa

Lewaszkiewicz Ł., Grieger A., Żukowska K., Chojnacki J.

Autobusy : technika, eksploatacja, systemy transportowe

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2012

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R. 13, nr 5

260-265

PL

Transport leśny definiowany jest jako dwuetapowy: zrywka i wywóz. Niezależnie od rejonu geograficzne i ukształtowania terenu o jakości transportu decyduje zbliżony zbiór czynników, który można usystematyzować w dwóch grupach: organizacyjnych i technicznych. Z przeprowadzonych na terenie województwa zachodniopomorskiego badań wynika, że większe problemy występują w obszarze czynników organizacyjnych. Czynniki techniczne zwłaszcza dla fazy wywozowej stanowią mniejszy problem z uwagi na bardziej precyzyjne i rygorystycznie przestrzegane przepisy z ustawy o transporcie drogowym. Szersze zastosowanie nasiębiernej technologii zrywki drewna może w sposób znaczący poprawić jakość wywozu drewna z lasu i obniżyć koszty transportu drogowego. Wprowadzenie w powszechne użytkowanie monitoringu pozyskania i wywozu drewna oraz jego transport do klienta stanowi wyzwanie dla firm transportowych na najbliższy okres czasu.

EN

Wood transport is come up for - pick and export. Independently from geographic land and territory configuration transport quality depend from organization and technical factors. The most problems appear in area of organization factors. Consider research in West Pomerania land. Technical factors come under export constitute lesser problem. The second factor is exacting obey low from statute about transport. Introduction monitoring to pick export wood to customer set difficult problem for transport company in closed time.