20.500.12556/DKUM-99962 Računska analiza prednapete prekladne konstrukcije nadvoza Structural analysis of prestressed concrete overpass superstructure V diplomskem delu je obravnavana računska analiza prednapete betonske prekladne konstrukcije nadvoza, ki je zasnovana kot kontinuirana konstrukcija preko dveh razponov z dolžino 25m. Poudarek je na izračunu potrebne sile prednapenjanja, določitvi poteka kablov, kontrolah nosilnosti in uporabnosti ter dimenzioniranju armature. Uvodoma so predstavljeni statični sistem, geometrija prečnega prereza in uporabljeni materiali. Upoštevani so stalni vplivi, kot sta lastna teža in dodatna stalna obtežba, ter spremenljivi vplivi, pri čemer sta prometna obtežba po obtežnem modelu LM1 in temperaturna obtežba določeni skladno z veljavnimi standardi skupine SIST EN 1991. V programskem paketu Tower je izdelan računski model prekladne konstrukcije za analizo notranjih statičnih količin, pomikov in učinkov prednapenjanja. Na podlagi notranjih sil iz modela je izračunana potrebna sila prednapenjanja ter določena geometrija kabelske linije. Na podlagi rezultatov, preverjenih z neodvisnim ročnim izračunom, so izvedene kontrole v mejnem stanju nosilnosti in mejnem stanju uporabnosti ter izračunane potrebne količine vzdolžne armature. Izdelane so sheme armiranja karakterističnih prečnih prerezov v polju in nad podporo, prikazana pa je tudi shema kablov za prednapenjanje. Analiza je omejena na prekladno konstrukcijo, ki je obravnavana v vzdolžni smeri, z linearno elastičnim modelom in bruto prerezi. Ključni prispevek dela je celovit postopek, ki povezuje programsko modeliranje, neodvisni ročni izračun in prenos rezultatov v dimenzioniranje armature ter izdelavo konstrukcijskih detajlov prednapete prekladne konstrukcije nadvoza. The thesis presents a structural analysis of a prestressed concrete overpass superstructure, designed as a continuous two-span structure with a span length of 25 m each. The main focus is placed on determining the required prestressing force, defining the tendon profile, verifying the ultimate and serviceability limit states, and designing the reinforcement. The thesis initially presents the structural system, cross-sectional geometry, and materials used. Permanent actions, including self-weight and additional permanent loads, as well as variable actions are considered. The traffic load according to Load Model LM1 and the thermal actions are determined in accordance with the applicable standards of the SIST EN 1991 series. A computational model of the bridge superstructure is developed in the Tower software package for the analysis of internal forces, displacements, and the effects of prestressing. Based on the internal forces obtained from the model, the required prestressing force is calculated, and the geometry of the tendon profile is determined. Based on the verified results, checks are carried out for both the ultimate limit state and the serviceability limit state, and the required amount of longitudinal reinforcement is determined. Reinforcement layouts are prepared for the characteristic cross-sections in the span and above the support, together with the layout of the prestressing tendons. The analysis is limited to the bridge superstructure, which is considered in the longitudinal direction using a linear-elastic model and gross cross-sectional properties. The key contribution of the thesis is a comprehensive procedure integrating numerical modelling, independent hand calculations, and the application of the obtained results to reinforcement design and the development of structural detailing for the prestressed concrete overpass superstructure. prednapeti beton prekladna konstrukcija nadvoza kabelska linija dimenzioniranje Tower prestressed concrete overpass superstructure tendon profile structural design Tower software true true false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2026-08-31 20:35:10 2026-09-10 10:39:01 2026-09-11 03:08:02 0000-00-00 00:00:00 2026 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 VS_Obradovic_Dejan_2026.pdf VS_Obradovic_Dejan_2026.pdf 1 8031C5E8445F7CEF4D105353E3AF171C ff5fad7451f4183f347546a9c6a59b002a2b67f863eb8552f9ddd9f0de3c1d40 fb98f168-a5fe-11f1-9be0-00155d0001be https://dk.um.si/Dokument.php?lang=slv&id=211167 Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo 0 0 0