Analiza jeklenega paličnega nosilca z razponom 40 metrov : diplomska naloga

Kastelic, Urban (author), Može, Primož (mentor)

V diplomski nalogi sem obravnaval dve definirani paličji, kjer so prvo paličje sestavljali odprti prerezi z vijačenimi spoji (tradicionalna zasnova). Drugo paličje so sestavljali zaprti prerezi (cevi) z varjenimi spoji. Paličji sem analiziral z globalno elastično analizo. Pri modeliranju vozlišč sem vsako paličje razširil na tri različne tipe vozlišč. Prvi model je temeljil na principu togih vozlišč z oznako (RMT), drugi model na principu togega pasu po celotni dolžini, kjer so polnilni elementi priključeni členkasto (RMK), tretji model pa je na principu členkastih vozlišč (RMČ). Zasnoval in dimenzioniral sem elemente in vozlišča vseh modelov. Obtežba je bila podana in je bila enaka za vse modele. Namen te diplomske naloge je bila primerjava rezultatov pri dveh različnih zasnovah s tremi različnimi modeliranji vozlišč. Postopki kontrol pri nosilcu iz cevi so veliko bolj enostavni in transparentni kot pri tradicionalni zasnovi. Pri modeliranju vozlišč se notranje statične veličine in rezultati kontrol nosilnosti ne razlikujejo veliko glede na različne modele. Vsi modeli imajo zadostno duktilnost za razvoj rotacij, ki so majhne. Kontrole nosilnosti pri modelu s togimi vozlišči se ponekod zapletejo na račun razvoja sekundarnih momentov, ki so majhni. Najboljša opcija za projektiranje je bilo paličje sestavljeno iz cevi po modelu (RMK).

• Language: Slovenian
• Keywords: palični nosilec, tradicionalna zasnova, cevi, vijačeni spoji, zvari, analiza
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publisher: U. Kastelic]
• Year: 2019
• PID: 20.500.12556/RUL-108757
• UDC: 624.014.2:006.3(043.2)
• COBISS.SI-ID: 8897377
• Publication date in RUL: 19.07.2019

KASTELIC, Urban, 2019, Analiza jeklenega paličnega nosilca z razponom 40 metrov : diplomska naloga [online]. Bachelor’s thesis. U. Kastelic. [Accessed 17 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=108757

Secondary language

• Language: English
• Title: Analysis of steel truss with span of 40 meters : graduation thesis

Abstract

The diploma thesis deals with analysis of two defined trusses. The first truss is assembled with open cross sections with bolted connections (traditional design), while the second one is assembled with welded tubes. Both trusses were analysed with the elastic global analysis. While designing the trusses, each truss was expanded according to three different types of nodes. The first design was based on the numerical model with rigid nodes (RMT), the second design on the model with continuous upper and lower chords, while the verticals and diagonals were hinged to the chords (RMK), the third design was based on the model considering ideal truss system (RMČ). The purpose of this thesis was to compare the results of two different truss structures with three different numerical models. The control procedures for the tubular truss beam were much simpler and more transparent in comparison to the structure with angle and U profiles. The internal forces were similar in all cases. Both structural systems had sufficient ductility to develop rotations and therefore reduce the secondary moments.. The design of bolted joint was complicated, because the secondary moments and the moments due to load eccentricity had to be taken into account. For this reason, the truss made of tubes was better option.

• Keywords: truss, tradicional design, tubes, bolted conections, welds, analysis