Dynamic testing and modal analysis of Ribarev bridge

U ovom radu bit će prikazana analiza Ribarevog mosta; pješačkog mosta u Zoološkom vrtu u Zagrebu. Pomoću programskog paketa Staad.Pro izrađena su dva 3D numerička modela konstrukcije, statički i dinamički. Statički model služio je za usporedbu vrijednosti momenata savijanja u odnosu na vrijednosti dobivene projektom. Rezultati dobiveni dinamičkim modelom uspoređeni su sa rezultatima ispitivanja mosta na terenu. Dinamičko ispitivanje mosta provedeno je pomoću šest akcelerometara. Za izradu modela potrebnog za ispitivanje korišten je ModalVIEW softver. Izrada modela u programu detaljno je opisana u ovom radu. Dinamičkim ispitivanjem na terenu mjerene su frekvencije i ubrzanja mosta. Frekvencije su uspoređene sa onima dobivenim dinamičkim modelom, a ubrzanja mosta su uspoređena sa normama.This thesis presents the dynamic load analysis of pedestrian bridge ''Ribarev most'' at the ZOO in Zagreb. Static and dynamic 3D numerical model were created in Staad.Pro program package. The static model was used to compare the value of bending moments in relation to the value obtained by the project. The results obtained with the dynamic model were compared with the results of field bridge testing. Dynamic testing was performed by six accelerometers. ModalVIEW software was used to crtate the model for bridge testing. The design of the model in the ModalVIEW program is described in detail in this thesis. Dynamic field tests were used to measure the frequency and acceleration of the bridge. The frequencies are compared to those obtained with a dynamic model, and the acceleration of the bridge is compared to the norms