Freezing conditions of various road surfaces in mountainous regions Takahashi, Shuhei et al
Språk: Engelska Språk: Franska Serie: ; topic V-96Utgivningsinformation: XIth international winter road congress 2002, Sapporo [Japan] / XIe congres international de la viabilite hivernale 2002, Sapporo [Japon]. Paper, 2002Beskrivning: 8 sÄmnen: Bibl.nr: VTI 2002.0071Location: Abstrakt: Freezing conditions of road surface and its concerned factors were observed in mountainous regions in the eastern Hokkaido, Japan, in a winter season of 1994 to 1995. In the Sekihoku pass area (about 900 m in altitude), radiative surface temperature was observed on three kinds of the road: a ordinary road, a road on a steel-bridge and a road in a snow-shed. As meteorological factors, air temperature, wind speed and radiative temperature of the sky were observed. They were recorded in data logger systems in 10 minutes interval and compared with the road surface conditions obtained by a road monitoring system of Hokkaido Development Bureau. In the Tanno tunnel (110 m in altitude) near Kitami, the radiative temperature of road surface was also observed in and out of the tunnel. The seasonal and diurnal variations of radiative surface temperature of each road types showed different thermal characteristics. The results are summarized as follows.| Aktuellt bibliotek | Status | |
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| Statens väg- och transportforskningsinstitut | Tillgänglig |
Freezing conditions of road surface and its concerned factors were observed in mountainous regions in the eastern Hokkaido, Japan, in a winter season of 1994 to 1995. In the Sekihoku pass area (about 900 m in altitude), radiative surface temperature was observed on three kinds of the road: a ordinary road, a road on a steel-bridge and a road in a snow-shed. As meteorological factors, air temperature, wind speed and radiative temperature of the sky were observed. They were recorded in data logger systems in 10 minutes interval and compared with the road surface conditions obtained by a road monitoring system of Hokkaido Development Bureau. In the Tanno tunnel (110 m in altitude) near Kitami, the radiative temperature of road surface was also observed in and out of the tunnel. The seasonal and diurnal variations of radiative surface temperature of each road types showed different thermal characteristics. The results are summarized as follows.