Projekt 30 etažne jeklene stavbe : magistrsko delo

Sinanović, Adis (author), Može, Primož (mentor)

V sklopu magistrske naloge je obravnavana računska analiza in dimenzioniranje tipičnih elementov jeklene stavbe višine 119 m, ki se nahaja v Ljubljani. Zaradi višine stavbe statični sistemi, ki so bili v toku študija najbolj pogosto obravnavani (momentni okvir in okvir s vertikalnimi povezji), pri prenosu horizontalne obtežbe in zagotavljanju horizontalne togosti, ne zadostujejo in je potrebno uporabiti posebne statične sisteme, razvite posebej za gradnjo visokih stavb. Uporabljen je statični sitem okvirja z vertikalnimi in prečnimi povezji (outriggerji), katerega delovanje je opisano v poglavju 2. Računska analiza in optimizacija uporabljenih profilov je bila izvedena s programom Scia Engineer. Končni rezultati so bili preverjeni ročno po postopku denem v Evrokodu 3. Posebnosti pri analizi so izračun konstrukcijskega faktorja pri obtežbi vetra (cscd) in redukcijskega faktorja koristne obtežbe v odvisnosti od števila etaž nad obravnavanim elementom (αn). Oba faktorja, zaradi višine in geometrije stavbe, več nista enaka ena, temveč je po obravnavanih standardih dovoljeno znižanje obtežbe, vendar je končna analiza zaradi tega zahtevnejša. Na koncu je bilo preverjeno tudi mejno stanje uporabnosti konstrukcije. Zaradi višine stavbe, lahko obtežba vetra povzroči dinamično vzbujanje konstrukcije, to vodi do pretiranih vibracij, ki so za uporabnike stavbe lahko moteči. Končni pospešek je bil ocenjen s pomočjo poenostavljene metode dane v Evrokodu 1-4 in primerjan z omejitvami iz literature.

• Language: Slovenian
• Keywords: jeklena stavba, konstrukcijski sistemi, okvir s povezji, dimenzioniranje
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publisher: [A. Sinanović]
• Year: 2017
• PID: 20.500.12556/RUL-96469
• UDC: 624.014.2:006.76(497.451.1)(043.3)
• COBISS.SI-ID: 8203361
• Publication date in RUL: 02.10.2017

Secondary language

• Language: English
• Title: Project of 30 storey steel building : Master thesis

Abstract

Within the scope of the master's thesis, a global analysis and design of the typical steel elements of a building height of 119 m, which is located in Ljubljana, was performed. Due to the height of the building, the structural systems that were most frequently considered during the course of the study (shear frame and shear truss with vertical connections) were not sufficient for the transmission of horizontal loads and the provision of horizontal rigidity. Thus special structural systems, specially developed for the construction of high buildings, were used. Belt and outrigger trusses wre used. Their structural behavior is described in Chapter 2. The global analysis and the optimization of profiles was carried out using the program Scia Engineer. The final results were verified manually according to the procedure given in Eurocode 3. The peculiarities of the analysis include the calculation of the structural factor during wind actions (cscd) and the reduction factor of the imposed load, depending on the number of floors above the considered element (αn). Both factors reduce the actions, due to the height and geometry of the building, but according to the standards considered, the reduction of the load is permitted, which makes the final analysis more demanding. Finally, the serviceability limit state of the construction was also verified. Due to the height of the building, the wind actions can cause a dynamic excitation of the structure, which leads to excessive vibrations that can be disturbing for the users of the building. The final acceleration was estimated using the simplified method given in Eurocode 1-4 and compared with the limitations given in literature.

• Keywords: steel building, structural systems, outriggers, design