20.500.12556/RUL-169421 Potresno odporno projektiranje armiranobetonskih integralnih mostov po novi različici standarda Evrokod 8 magistrsko delo Earthquake-resistant design of reinforced concrete integral abutment bridges according to the new version of the Eurocode 8 standard master thesis V magistrski nalogi smo izvedli potresno odporno projektiranje armiranobetonskih integralnih in semiintegralnih mostov v skladu z osnutkom nove verzije standarda Evrokod 8. Obravnavali smo 48 integralnih in 48 semi-integralnih variant mostov, ki so se med seboj razlikovale po številu razponov, dolžini najdaljšega razpona, višini opornikov in stebrov ter načinu temeljenja, s ciljem določitve pomembnosti posameznih parametrov na količino potrebne armature v opornikih, stebrih in pilotih. Obremenitve zaradi potresnega vpliva smo določili z metodo z vodoravnimi silami, za modeliranje konstrukcije pa uporabili elastične linijske končne elemente. Osredotočili smo se na delovanje potresne obtežbe v vzdolžni smeri in na poenostavljen način upoštevali interakcijo med konstrukcijo in zemljino. Analize smo izvedli z odprtokodnim programom OpenSees. Pripravo vhodnih datotek za analizo, obdelavo rezultatov analize in dimenzioniranje prečnih prerezov smo avtomatizirali v programskem okolju Matlab. Pri projektiranju opornikov smo upoštevali razred duktilnosti DC1, pri projektiranju stebrov pa tudi razreda duktilnosti DC2 in DC3. Za pilote smo upoštevali, da se med projektnim potresom ne smejo plastificirati. Rezultati so pokazali, da spremembe v parametrih mostov lahko povzročijo spremembe v razmerjih med količinami armature v različnih elementih podporne konstrukcije, ne povzročijo pa povečanja oz. zmanjšanja količine armature v vseh elementih hkrati. Opazili smo tudi, da pri integralnih variantah mostov oporniki v splošnem prevzamejo bistveno večji del potresne obtežbe kot stebri. Poleg tega se je izkazalo, da je pri semi-integralnih mostovih, za katere je značilen različen odziv v pozitivni in negativni smeri potresa, vedno merodajna smer, pri kateri se opornik premakne stran od zemljine. In the master's thesis, the earthquake-resistant design of reinforced concrete integral and semi-integral abutment bridges was carried out in accordance with the new version of the Eurocode 8 standard. 48 integral and 48 semi-integral bridge variants, which differed in the number of spans, the length of the longest span, the height of the abutments and columns, and the type of foundation were varied, with the aim of determining the impact of individual parameters on the amount of reinforcement required in abutments, columns and piles. Loads due to seismic action were determined using the lateral force method, and elastic linear finite elements were used to model the structure. The focus was put on the effects of seismic loads in the longitudinal direction, and the interaction between the structure and the soil was considered in a simplified way. The analyses were carried out using OpenSees. Preparation of input files for analysis, processing of the analysis results and the dimensioning of the cross-sections were automated in Matlab programming environment. For the design of the abutments, ductility class DC1 was considered, while in the design of the piers, ductility classes DC2 and DC3 were also taken into account. For the piles, it was assumed that they should remain in the elastic range during an earthquake. The results showed that changes in the bridge parameters can lead to changes in the ratios between reinforcement in different structural elements, but not to an increase or decrease in the amount of reinforcement in all elements at the same time. It has also been observed that for integral bridge variants, the abutments generally take a significantly higher proportion of the seismic load than the piers. In addition, it has been shown that in semi-integral bridges, which are characterised by a different response in the positive and negative directions of the earthquake, the direction at which the abutment moves away from the soil is generally the critical direction. magistrska dela gradbeništvo integralni mostovi semi-integralni mostovi parametrična študija interakcija zemljina-konstrukcija potresna analize metoda z vodoravnimi silami OpenSees Matlab analiza lastnega nihanja Evrokod 8 master thesis civil engineering integral abutment bridges semi-integral abutment bridges parametric study soil-structure interaction earthquake analysis lateral force method eigen modes analysis Eurocode 8 true false false [D. Kunič] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2025-05-28 08:45:05 2025-05-28 08:45:18 2025-08-08 13:20:38 0000-00-00 00:00:00 2025 0 Ljubljana 2025 Ljubljana 1 spletni vir (1 datoteka PDF (XVIII, 80 str., 11 str. pril.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 624.042.7:624.21(083.74)(043.2) 170758 237665539 17344.pdf 17344.pdf 1 93108864BF2BA6DB662E830F9ED38758 c18374562c5d4e60561ff977aa8e59db710361581919349540da0930e6f59e3a 06fad17d-3b8e-11f0-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=210754 Fakulteta za gradbeništvo in geodezijo 0 0 0