“Magistrsko delo obravnava dinamično odzivnost jeklene brvi za pešce in kolesarje Golobinjek. Namen raziskave je bil določiti dinamične karakteristike konstrukcije ter oceniti njen odziv na obtežbe, ki jih povzročajo uporabniki med običajno uporabo objekta. V okviru raziskave je bil izdelan prostorski numerični model konstrukcije v programskem paketu SOFiSTiK, na katerem je bila izvedena dinamična analiza. Obravnavani so bili različni obtežni primeri, ki so simulirali počasno hojo, hitro hojo, tek in skakanje treh oseb. Za preveritev ustreznosti numeričnega modela je bila izvedena tudi eksperimentalna analiza na dejanski konstrukciji. Meritve so bile opravljene s pospeškomeri, nameščenimi na glavna vzdolžna nosilca konstrukcije, pri čemer so bili določeni časovni poteki pomikov in pospeškov. Primerjava rezultatov numerične in eksperimentalne analize je pokazala dobro ujemanje lastnih frekvenc ter primerljivo odzivnost konstrukcije pri vseh obravnavanih obtežnih primerih. Ugotovljeno je bilo, da konstrukcija izpolnjuje zahteve glede dinamične odzivnosti in uporabnosti, saj izmerjene in izračunane vrednosti pomikov ter pospeškov ne presegajo mejnih vrednosti za udobje uporabnikov. Rezultati potrjujejo primernost uporabljenega numeričnega modela ter pomen eksperimentalne validacije pri vrednotenju dinamičnega obnašanja lahkih premostitvenih objektov.”
“This master’s thesis investigates the dynamic response of the Golobinjek steel pedestrian and cyclist bridge. The aim of the study was to determine the dynamic characteristics of the structure and evaluate its response to loads induced by users during normal service conditions. As part of the research, a three-dimensional numerical model of the structure was developed using the SOFiSTiK software package, on which a dynamic analysis was performed. Various loading scenarios were considered, simulating slow walking, fast walking, running, and jumping of three individuals. To verify the adequacy of the numerical model, an experimental analysis was also carried out on the actual structure. Measurements were performed using accelerometers installed on the main longitudinal girders of the bridge, enabling the determination of displacement and acceleration time histories. A comparison of the numerical and experimental results showed good agreement in terms of natural frequencies and comparable structural responses for all investigated loading scenarios. It was found that the structure satisfies the requirements regarding dynamic performance and serviceability, as the measured and calculated displacements and accelerations do not exceed the limit values associated with user comfort. The results confirm the suitability of the adopted numerical model and highlight the importance of experimental validation in the assessment of the dynamic behaviour of lightweight bridge structures.”