Proračun poluotvorene čelične hale na požar

master's thesis

• Title (english): Fire design of semi-open steel hall
• Author: Antonio Martinović
• Mentor: Davor Skejić (mentor)
• Committee member: Ivan Ćurković (predsjednik povjerenstva)
• Committee member: Ivan Lukačević (član povjerenstva)
• Committee member: Davor Skejić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; (Structures); Zagreb
• Defense date and country: 2020-09-24, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering; Supporting Structures

Abstract

Osnovna tema ovog diplomskog rada je izrada projekta konstrukcije poluotvorene čelične hale u Zadru i proračun konstrukcije na požar prema HRN EN 1991-1-2 i HRN EN 1993-1-2. Proveden je i proračun elemenata u 'hladnom stanju' gdje su razmatrana djelovanja vlastite težine, vjetra i snijega. Uz uobičajena djelovanja i proračun razvoja požara u zatvorenom dijelu konstrukcije, fokus je usmjeren na proračun otvorenog dijela konstrukcije na realni požar. Nadalje, izrađeno je dispozicijsko rješenje konstrukcije, te su riješeni glavni priključci okvirnog sustava. Tlocrtna pravokutna hala je širine 20 m i dužine 60 m, od čega je bočno otvoreni dio dug 25 m. Krov je dvostrešan pod nagibom od 10°, a visina u strehi je 6 m. Glavnu nosivu konstrukciju čini dvozglobni portalni okvir postavljeni na razmacima od 5 m. Konstrukcija je projektirana u kvaliteti čelika S355. Požarno opterećenje u zatvorenom dijelu hale je 350 MJ/m2, a zahtijevana požarna otpornost konstrukcije je R30. Za izračun razvoja požara (odnos temperatura - vrijeme) korišten je programski paket Ozone v3.0.4. Razmatranjem nekoliko različitih požarnih scenarija napravljena je kompletna analiza u programskom paketu SCIA Engineer 19.1. Nakon toga provedena je ručna provjera požarne otpornosti. Uz suvremene metode simulacije razvoja realnog požara i proračuna čeličnih konstrukcijskih elemenata na povišene temperature, dokazano je da razmatrana čelična konstrukcija bez protupožarne zaštite zadovoljava zahtjev za požarnu otpornost od R30.

Abstract (english)

The main topic of this thesis is the structural design project of a semi-open steel hall in Zadar and fire design of the structure according to HRN EN 1991-1-2 and HRN EN 1993-1-2. Design of elements in the 'cold state' was also carried out, where the effects of self-weight, wind and snow were considered. In addition to the common actions and the calculation of the fire development in the closed part of the structure, the focus is on the design of the open part of the structure on the real fire. Furthermore, the disposition solution of the structure was made, and the main joints of the frame system were design. The floor plan rectangular hall is 20 m wide and 60 m long, of which the side open part is 25 m long. The roof is gabled at a slope of 10 °, and the height in the eaves is 6 m. The main load-bearing structure consists of a two- hinged portal frame that are spaced 5 m from each other. The structure is designed in S355 steel grade. The fire load in the closed part of the hall is 350 MJ/m2, and the required fire resistance of the structure is R30. Ozone v3.0.4 software package was used to calculate fire development (temperature - time ratio). Considering several different fire scenarios, a complete analysis was made in the SCIA Engineer 19.1 software package. After that, a manual fire resistance check was performed. In addition to modern methods of simulating the development of real fire and the calculation of steel structural elements at elevated temperatures, it has been proven that the considered steel structure without fire protection meets the requirement for fire resistance of R30.

• Keywords: proračun na požar; poluotvorena hala; vanjski čelični elementi
• Keywords (english): fire design; semi-open hall; external steel members
• Language: croatian
• URN:NBN: urn:nbn:hr:237:835446
• 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: 2023-06-06 09:28:23