Proračun čelične portalne hale sa zavarenim profilima promjenjivog poprečnog presjeka

master's thesis

• Title (english): Design of steel portal hall with welded profiles of variable cross section
• Author: Tonči Pavlov
• Mentor: Davor Skejić (mentor)
• Committee member: Davor Skejić (predsjednik povjerenstva)
• Committee member: Ivan Ćurković (član povjerenstva)
• Committee member: Mislav Stepinac (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; (Structures); Zagreb
• Defense date and country: 2023-02-16, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering; Supporting Structures

Abstract

U ovom diplomskom radu obrađen je projekt čelične jednobrodne i jednoetažne hale koja je smještena na području grada Zagreba. Projekt sadrži dispozicijsko rješenje, analizu djelovanja te dimenzioniranje konstrukcijskih elemenata i priključaka prema HRN EN. Također, izrađeni su nacrti s detaljima priključaka nosive konstrukcije. Tlocrtne dimenzije hale su 40 m x 80 m, a visina u sljemenu iznosi 15 m. Glavni nosivi sustav hale je simetrični portalni okvir. Krov je dvostrešni, a nagib prečke okvira iznosi 15°. Uz vlastitu težinu konstrukcije uzeta su u obzir sva promjenjiva djelovanja (djelovanje snijega, vjetra, te seizmičko djelovanje) u skladu s lokacijom građevine. Za cijelu halu je korištena klasa čelika S355. Izrada modela i dimenzioniranje konstrukcijskih elemenata je odrađeno u programu 'SCIA Engineer' dok je za dimenzioniranje priključaka korišten program 'Autodesk Robot Structural Analysis Professional'. Razmotrena su tri varijantna rješenja koja se međusobno razlikuju po profilima poprečnih presjeka korištenih za izradu prečki i stupova okvira. U varijantnom rješenju 1 prečke i stupovi okvira su vruće valjani profili. U varijantnom rješenju 2 prečke i stupovi okvira su zavareni profili jednolikog poprečnog presjeka, dok su u varijantnom rješenju 3 prečke okvira zavareni profili jednolikog poprečnog presjeka, a stupovi su zavareni profili promjenjivog poprečnog presjeka. Na kraju je, kao optimalno rješenje prema kriteriju količine utrošenog materijala odabrano varijantno rješenje 3. Diplomski rad također obuhvaća i usporedbu rezultata ručnog i kompjuterskog proračuna zavarenih prečki i stupova za odabrano optimalno rješenje. Za elemente promjenjivog poprečnog presjeka je uočeno nepodudaranje rezultata koje je detaljno obrazloženo u ovom radu. Treba naglasiti da su elementi promjenjivog poprečnog presjeka gotovo nepokriveni normama za proračun čeličnih konstrukcija te je proračun utemeljen na dostupnoj literaturi.

Abstract (english)

This master thesis deals with the project of a single-nave and single-storey steel hall located in the area of the city of Zagreb. The project contains a dispositional solution, an analysis of actions and the design of structural elements and joints according to HRN EN. Also, detailed drawings of joints of the load-bearing structure were made. The layout dimensions of the hall are 40 m x 80 m, and the height of the ridge is 15 m. The main load-bearing system of the hall is a symmetrical portal frame. The roof is duopitch and the slope of the frame beam is 15°. In addition to the self-weight of the structure, all variable loads (snow, wind, and seismic action) were taken into account in accordance with the location of the building. For the entire hall, steel grade S355 was used. The development of models and the design of structural elements was conducted in the software 'SCIA Engineer' while the software 'Autodesk Robot Structural Analysis Professional' was used for the design of joints. Three variant solutions were considered, which differ in cross-sectional profiles used for the construction of beams and columns of the frame. In variant solution 1, beams and columns of the frame are hot-rolled profiles. In variant solution 2 beams and columns of the frame are welded profiles of uniform cross-section, while in variant solution 3 beams of the frame are welded profiles of uniform cross-section, and columns are welded profiles with tapered cross-section. Finally, variant solution 3 was chosen as the optimal solution based on the criterion of material consumption. The thesis also includes a comparison of the results of manual and computer design of welded beams and columns for the selected optimal solution. For tapered cross-section members, a deviation of results was observed, which is explained in detail in this thesis. It should be emphasized that the members with tapered cross-sections are almost uncovered by the norms for the design of steel structures and the design is based on the available literature.

• Keywords: proračun; optimizacija; Eurokod 3; portalni okvir; zavareni profili; profili promjenjivog poprečnog presjeka
• Keywords (english): design; optimisation; Eurocode 3; portal frame; welded profiles; tapered cross-sectional profiles
• Language: croatian
• URN:NBN: urn:nbn:hr:237:874480
• Study programme: Title: Civil Engineering; specializations in: Construction Management, Transportation Engineering, Geotechnical Engineering, Hydraulic Engineering, Structural Engineering, Construction Materials, Theory and Modeling of Structures; Course: Construction Management; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka građevinarstva (magistar/magistra inženjer/inženjerka građevinarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2023-03-16 10:29:35