Calculation of the fire resistance of a typical laminated bracket with a special geometry

Zadatak ovog diplomskog rada je, za zadane tlocrtne i visinske dimenzije objekta, proračunati požarnu otpornost tipskog lameliranog nosača. Kako bi se došlo do proračuna požarne otpornosti, prethodi dimenzioniranje nosača, kako glavnih tako i sekundarnih. Požarnom otpornosti će se dokazati u kojem će trenutku zadani nosač otkazati pod djelovanjem osnovnog te požarnog opterećenja. Svi proračuni su provedeni prema važećem EUROCODU 5 – HRN EN 1995 Proračun drvenih konstrukcija, HRN EN 1995-1-2 Projektiranje konstrukcija na požarno djelovanje. Zadani objekt se nalazi u gradu Osijeku na nadmorskoj visini 90 m.n.m. Svi elementi konstrukcije izvest će se od lijepljenog lameliranog drveta razreda čvrstoće GL24h, te od čelika kvalitete S275. Dispozicija glavnih i sekundarnih nosača, te ostali grafički prilozi izrađeni su u računalnom programu AutodeskAutoCAD 2022, dok je za analizu modela konstrukcije korišten računalni programski paket Robot Structural Analysis Proffesional 2023.The task of this master’s thesis is to calculate the fire resistance of a typical glued laminated beam for the given floor plan and height dimensions of the building. In order to get the calculation of fire resistance, the dimensions of the supports, both main and secondary, precede. The fire resistance will prove at what moment the given support will fail under the action of the basic and fire load. All calculations were carried out according to the valid EUROCODE 5 – HRN EN 1995 Calculation of wooden structures, HRN EN 1995-1-2 Designing structures for fire action. The given object is located in the city of Osijek at an altitude of 90 m.a.s.l. All elements of the structure will be made of glued laminated wood of strength class GL24h, and of steel quality S275. The layout of the main and secondary supports, as well as other graphic attachments, were made in the computer program AutodeskAutoCAD 2022, while the computer program package Robot Structural Analysis Professional 2023 was used for the analysis of the construction model