Dynamic Behaviour of Single-storey Frame Models Subject to Seismic Base Excitation

Završni rad bavi se proučavanjem djelovanja dinamičke pobude na jednokatnom okviru bez i s dodanim elementima za ojačanje te se od njih očekuje pozitivan utjecaj na krutost okvira i prigušenje oscilacija. Na početku rada izvedene su jednadžbe kretanja i opisane karakteristike korištenog okvira. Svi eksperimenti u završnom radu provedeni su u Labaratoriju za konstrukcije Građevinskog fakulteta u Rijeci. Prilikom eksperimentalnog ispitivanja koristila se potresna ploča, optički mjerni sustav i upravljačka jedinica. Dodatni elementi su printani pomoću 3D printera, a prethodno su modelirani u programu Autocad. Jednokatni okviri su podvrgnuti sinesweep funkciji i potresnim zapisima koji su se dogodili u povijesti. Na temelju rezultata eksperimentalnih ispitivanja dobiveni su učinci dodatnih elemenata. Eksperiment je bio uspješan te dodavajući elemente za ojačanje možemo poboljšati dinamički odgovor okvira.This undergraduate thesis studies the effect of dynamic excitation on a single-story frame without and with added elements which are expected to have a positive impact on the stiffness of the frame and damping of oscillations. At the beginning of the work, equations of motion are derived, and the characteristics of the frame are described. All the experiments in the undergraduate thesis are conducted in the Structural laboratory at the Faculty of Civil Engineering in Rijeka. A shaking platform, an optical measuring system and a control unit were used to conduct the experiments. The added elements were printed using a 3D printer, which had been previously modeled in the Autocad program. Single-story frames are subjected to a sinesweep function and seismic records from earthquake that have occurred in history. Based on the results of experimental tests, the effects of additional elements were observed. The experiment was successful, it shows by adding amplification elements the dynamic response frame can be improved