Potresna analiza višekatne čelične zgrade

master's thesis

• Author: Dora-Ana Drmić
• Mentor: Davor Skejić (mentor)
• Granter: University of Zagreb; Faculty of Civil Engineering; Zagreb
• Defense date and country: 2023, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering; Supporting Structures

Abstract

U diplomskom radu provedena je analiza i dimenzioniranje višekatne čelične zgrade poslovne namjene. Analizirana je 21,5 m visoka građevina tlocrtnih dimenzija 32 m x 22 m. Okviri otporni na moment savijanja čine glavne nosive sustave koji dominantno preuzimaju horizontalna djelovanja. Ostatak konstrukcije sa zglobno spojenim nosačima na stupove tvori sekundarne sustave koji se dominantno odupiru gravitacijskim djelovanjima. Za stupove koji su promjenjivi po visini su korišteni HEM 340, odnosno HEM 300 profili. Nosači u oba smjera (uzdužnom i poprečnom) su IPE 400 profili. Kao međukatna konstrukcija odabrana je spregnuta ploča Cofraplus 220. Svi nosivi elementi su izrađeni od kvalitete čelika S 275. S obzirom na tip konstrukcije, faktor ponašanja je usvojen s vrijednosti 4, te su elementi dimenzionirani na srednji razred duktilnosti (DCM). Analiza i dimenzioniranje konstrukcije provedeno je u skladu s europskim normama na 3D modelu izrađenom u računalnom programu SCIA Engineer. Proračun priključaka izrađen je u kompjutorskom programu IDEA StatiCa. Svi konstrukcijski elementi također su ručno provjereni za mjerodavne seizmičke kombinacije te zadovoljavaju sve zahtjeve seizmičke analize prema HRN EN 1998. Nakon provedbe seizmičke analize konstrukcije i zadovoljavanja svih odredbi HRN EN 1998 s ciljem očuvanja života ograničenjem oštećenja konstrukcije utrošak čelika iznosi 65 kg/m2. Bez obzira na relativno tešku čeličnu konstrukciju, u konačnici imamo laganu konstrukciju s visokim stupnjem duktilnosti, koja nudi efikasno konstrukcijsko rješenje naročito ako odaberemo optimalan nosivi sustav.

Abstract (english)

The master’s thesis deals with the analysis and design of a multi-storey steel building for commercial use. A 21.5 m high structure with floor plan dimensions of 32 m x 22 m was analysed. Moment resisting frames form the main load-bearing systems which predominantly carry horizontal loads. The rest of the structure with hinged beam connections to columns
forms secondary systems that resist gravity actions primarily. HEM 340 and HEM 300 profiles are used for columns that are change with height. The beams in both directions (longitudinal and transverse) are made of IPE 400 profiles. The composite floor system chosen is Cofraplus 220. All load bearing members are made of S275 steel. Given the type of the structure, a behaviour factor of 4 was assumed and the members were designed for a medium ductility class (DCM). The analysis and design of the structures were carried out in accordance with European norms on a 3D model created with the computer programme SCIA Engineer. The joint design was carried out using the computer programme IDEA StatiCa. All structural members are also manually checked for relevant seismic combinations and fulfil all seismic analysis requirements according to HRN EN 1998. After conducting the seismic analysis of the structure and complying with all the provisions of
HRN EN 1998 with the aim of preserving life and limiting structural damage, the steel consumption amounts to 65 kg/m2. Notwithstanding the relatively heavy steel construction, we end up with a lightweight construction with a high degree of ductility, which provides an efficient construction solution, especially if we choose an optimal load-bearing system.

• Keywords: Višekatna čelična zgrada; okvirni sustavi; potresna analiza; Eurokod
• Keywords (english): Multi-storey steel building; moment resisting frames; seismic analysis; Eurocode 8
• Language: croatian
• URN:NBN: urn:nbn:hr:237:231951
• 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: 2023-07-17 12:54:21