20.500.12556/RUL-186325 Vpliv temperature in dušenja na vibracije brvi z nosilnim sistemom nateznega traku študija primera brvi v Irči vasi The influence of temperature and damping on the vibrations of a stress ribbon footbridge case study of footbridge in Irča vas Mostovi oz. brvi z nosilnim sistemom nateznega traku so specifične in tehnološko zahtevne konstrukcije, ki so zaradi svoje vitkosti dovzetne za vibracije, ki nastanejo kot posledica dinamičnega vzbujanja zaradi hoje in teka pešcev in tekačev. Njihov dinamični odziv je močno odvisen od temperaturnih sprememb, ki vplivajo na togost brvi, ter od dušenja, ki ga je vnaprej težko natančno oceniti. V prispevku predstavimo, kakšen vpliv imajo temperaturne spremembe in dušenje na vibracije brvi z nosilnim sistemom nateznega traku ter posledično na udobje uporabnikov. Preučevanje omenjenih vplivov smo izvedli na konkretni brvi za pešce in kolesarje čez reko Krko v Irči vasi pri Novem mestu, ki je prva in trenutno edina konstrukcija tega tipa v Sloveniji. V prispevku je predstavljen računski model obravnavane brvi, katerega odziv je primerjan z dejansko izmerjenim statičnim in dinamičnim odzivom brvi. Predstavljene so tudi ugotovitve obsežnih parametričnih dinamičnih analiz, ki so bile izvedene ob različnih temperaturnih pogojih in pri različnih deležih kritičnega dušenja. Stress ribbon bridges and footbridges are specific and technologically demanding structures which, due to their slenderness, are susceptible to vibrations resulting from dynamic excitation caused by pedestrian and runner activity. Their dynamic response is highly dependent on temperature changes that affect the stiffness of the structure, as well as on damping, which is difficult to estimate accurately in advance. This article examines the influence of temperature variations and damping on the vibrations of a stress ribbon footbridge and, consequently, on user comfort. The case study of these effects was conducted on the pedestrian and cyclist bridge over the Krka River in Irča vas near Novo mesto, which is the first and currently the only structure of this type in Slovenia. The article also presents a numerical model of the analysed footbridge, with its response compared to the measured static and dynamic response of the actual structure. Furthermore, the findings of extensive parametric dynamic analyses are presented, performed under varying temperature conditions and considering different ratios of critical damping. natezni trak brv Irča vas vibracije pešci temperaturne spremembe dušenje stress ribbon footbridge Irča vas vibrations pedestrians temperature changes damping true false true Slovenski jezik Angleški jezik Članek v reviji 2026-08-31 09:06:15 2026-08-31 09:06:26 2026-09-03 04:37:15 0000-00-00 00:00:00 2026 0 0 Str. 82-93 št. 2 Letn. 75 jun. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 531/534:519.673:625.745.11 0017-2774 289406723 Stopar,_Cas,_Cesarek-Vpliv_temperature_in_dusenja_na_vibracije_brvi_z_nosilnim_sistemom_nateznega_traku.pdf Stopar,_Cas,_Cesarek-Vpliv_temperature_in_dusenja_na_vibracije_brvi_z_nosilnim_sistemom_nateznega_traku.pdf 1 E40A03C5EAAC4D0E8D69F06ECA2875EA 17ed528f234557345ac0d0448266df2ce1fe4be4864f2d678ccf85a6b072b5ec 21484fee-a50b-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=245477 https://gradbenivestnik.zveza-dgits.si/prispevek/2026_02-82-93 1 191f09c1-a50a-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=245476 Fakulteta za gradbeništvo in geodezijo 0 0 0