Vpliv prečnega nagiba na torno sposobnost vozne površine : magistrsko delo

Kokot, Darko (author), Žura, Marijan (mentor)

Prometno varnost lahko zagotavljamo le ob celovitem razumevanju sistema voznik - vozilo - cesta z okoljem. Nesreče so lahko posledica voznikovih dejanj, napak ali težav z vozili, ali zaradi voznega okolja. Svoj del k prometni varnosti vsekakor prispeva tudi vozna površina, po kateri se premikajo vozila. Pri tem so posebej pomembne torne lastnosti, s čimer opisujemo torno sposobnost ter grobo hrapavost vozišč oz. njihovih voznih površin. V magistrski nalogi sem določal vpliv prečnega in vzdolžnega nagiba na izmerjeno torno sposobnost. Ta vpliv je lahko velik in precej vpliva na izračun končnih značilnih vrednosti koeficientov bočnega trenja - pogojne, mejne in prevzemne vrednosti, ki so uporabne za presojo ustreznosti voznih površin na cestah v Sloveniji. Za analize sem uporabil rezultate meritev tornih lastnosti, ki smo jih na avtocestah v letu 2008 izvedli z napravo SCRIMTEX; rezultate meritev sem primerjal z geometrijskimi podatki avtocest, s starostjo vgrajenih asfaltnih zmesi, in s prometnimi obremenitvami obravnavanih odsekov. Preveril sem večje število različnih kombinacij vplivov na torno sposobnost. Med njimi sem ugotovil malo takih, ki nakazujejo šibko povezanost torna sposobnost/vplivni parameter, in zelo malo takih, ki nakazujejo zmerno povezanost. Velika večina povezanosti ne kaže. To pa zaenkrat še ne predstavlja dovolj močne podlage za spremembo oziroma dopolnitev zgoraj navedenih značilnih vrednosti koeficientov bočnega trenja SR.

• Language: Slovenian
• Keywords: gradbeništvo, magistrska dela, lastnosti voznih površin, torna sposobnost, prečni nagib, vzdolžni nagib, radiji ukrivljenosti, starost voznih površin, korelacija
• Work type: Master's thesis
• Typology: 2.09 - Master's Thesis
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Place of publishing: Ljubljana
• Publisher: [D. Kokot]
• Year: 2016
• Number of pages: XVI, 86 str., 10 pril.
• PID: 20.500.12556/RUL-86151
• UDC: 625.8(043.3)
• COBISS.SI-ID: 7692129
• Publication date in RUL: 03.11.2016

Secondary language

• Language: English
• Title: Influence of crossfall on road pavement surface skid resistance

Abstract

Traffic safety can be ensured only with a comprehensive understanding of the system driver - vehicle - road environment. Accidents on roads happen due to the driver's actions, errors and problems with the vehicles or happen on account of adverse events in the driving environment. A part of the road safety can certainly be attributed to the pavement surface and its own performance. Particularly important contributing properties are skid resistance and macrotexture. The aim of the work for this thesis was to determine the influence of crossfall and slope on the results of skid resistance measurements. This impact can be notable and may significantly affect the calculation of the characteristic skid resistance values – the limit, minimal and acceptance values - which are used in the assessement of pavement performance of roads in Slovenia. The results of the skid resistance measurements on motorways in 2008, performed with the SCRIMTEX device, served as a basis of the work. These results were compared with the pavement geometric data; with age of asphalt mixtures, built-in the pavement surface; and with traffic load of concerned road sections. A high number of different combinations of influence on skid resistance for the motorway' pavements were examined. Among them some indicate a weak correlation between skid resistance/influential parameter, and only few indicate a moderate correlation. For vast majority the relationship was found to be insignificant. As such, the results don't represent a momentum strong enough to change or adapt the above-mentioned skid resistance characteristic values.

• Keywords: civil engineering, master of science thesis, pavement surface characteristics, skid resistance, crossfall, slope, radii of curvature, pavement age, correlation, DTA model