20.500.12556/DiRROS-23728 Določitev osenčenosti dolvodne površine betonske pregrade Moste Determination of the shading of the downstream surface of the Moste concrete dam V prispevku je obravnavana nova metoda za določitev osenčenosti površin, in sicer na podlagi meritev s terestričnim laserskim skenerjem ter z izdelanima računalniškima programoma, ki za izbrano opazovalno točko določita obris terena ter položaj Sonca in osončenost v času. Metoda je predstavljena na primeru pregrade Moste, za katero so bili po skeniranju območja pregrade izdelani obrisi terena iz desetih opazovalnih točk, lociranih v osi dolvodne površine pregrade, za azimute od 80° do 280° pri izbranem horizontalnem kotu in koraku 5°. Za izločitev posameznih grobo pogrešenih točk sta bila izbrana kvantilna ranga 0,998 oziroma 0,997. Iz primerjave rezultatov izračunov med uporabljenima variantama je razvidno, da so zelo podobni, kar kaže, da je število grobo pogrešenih točk zelo majhno. Zelo zanesljive rezultate dobimo že z uporabo kvantilnega ranga 0,998. Iz primerjave rezultatov meritev in izračunov osenčenosti na lokaciji mobilne samodejne vremenske postaje Moste v obravnavanem obdobju sedmih zaporednih jasnih dni v začetku avgusta 2013 pa je bilo ugotovljeno, da se zelo dobro ujemajo, kar potrjuje, da je opisana metoda določitve osenčenosti zelo zanesljiva. This paper deals with a new method for determining the shading of surfaces by means of terrestrial laser scanner measurements and two specially designed computer programs, which, for any selected observation point, can determine the contour of the terrain, the position of the sun, and insolation over time. The method was applied to the Moste dam, where, after scanning of the area of the dam, the contours of the terrain were determined from ten observation points located along the axis of the dam's downstream surface, for azimuths of 80° to 280° at a selected horizontal angle and step of 5°. In order to exclude stray points, quantiles of 0.998 and 0.997 were selected. The results of calculations made using the two applied variants were very similar, thus indicating a minuscule number of stray points. Very reliable results were already obtained when using the quantile of 0.998. The results of the measurements and the calculations of shading at the Moste mobile automatic weather station, over a period of seven consecutive clear days in early August 2013, showed very good agreement, confirming that the described method for determining of shading is highly reliable. terestrični laserski skener betonska pregrada Moste obris terena osenčenost terrestrial laser scanner concrete dam Moste terrain contour shading true false true Zveza geodetov Slovenije Slovenski jezik Angleški jezik Neznano 2025-09-26 12:28:42 2025-09-26 12:38:34 2025-10-24 03:54:56 0000-00-00 00:00:00 2014 0 0 str. 453-465 št. 3 Letn. 58 2014 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2014-01-01 627.82.05:621.8.035 0351-0271 10.15292/geodetski-vestnik.2014.03.453-465 6750305 gv58-3_zvanut.pdf gv58-3_zvanut.pdf 1 3B73161C9EF8E3DA42D73420D3F73E1D 9a61d5298f3997f2880a7df2779e01ca604237f1422230e2aa432f442e3b486f ed692795-9ac4-11f0-9bb7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=35160 https://doi.org/10.15292/geodetski-vestnik.2014.03.453-465 0 dfbd3455-9ac4-11f0-9bb7-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=35159 Zavod za gradbeništvo Slovenije 0 0 0