20.500.12556/RUL-162321 Vpliv potresne izolacije na potresne zahteve armiranobetonske stavbe diplomska naloga Effect of seismic isolation on seismic demands of a reinforced concrete building V nalogi obravnavamo potresno analizo trietažne armiranobetonske okvirne stavbe, tj. stavbe SPEAR, in potresni analizi dveh različici potresno izolirane stavbe SPEAR, pri čemer sta uporabljeni elastomerni ali trenjski potresni izolatorji. Najprej razložimo teorijo potresne izolacije konstrukcij in enačbe, ki opisujejo dinamične lastnosti potresno izolirane stavbe z modelom z dvema prostostnima stopnjama (angl. 2DOF), kar vključuje potresno izolacijo in konstrukcijo stavbe. Nato predstavimo predpise za uporabo proti-potresnih naprav v skladu z novo različico Evrokoda 8 ter uporabo novega elastičnega spektra odziva. Nadalje opišemo stavbo SPEAR in nekatere vrste potresnih izolatorjev, od katerih sta dve vrsti izolatorjev uporabljeni za potresno analizo potresno izoliranih različic stavbe SPEAR. Poleg tega analiziramo krožni frekvenci lastnega nihanja sistema 2DOF v odvisnosti od lastnosti potresnih izolatorjev z upoštevanjem zahtev Evrokoda 8. Na koncu izvedemo potresno analizo vseh različic stavbe SPEAR in izvedemo primerjavo potresnih zahtev na konstrukcijo stavbe in potresne izolatorje. Ugotovimo, da je obremenitev potresnih izolatorjev pa v mejah dovoljenih vrednosti, obremenitev konstrukcijskih elementov za različici potresno izolirane stavbe SPEAR pa precej nižja kakor pri neizolirani stavbi. Zmanjšanje obremenitve konstrukcije stavbe je posledica daljšega nihajnega časa za potresno izolirano stavbo, dodatno pa potresno obtežbo zmanjša še sipanje energije v potresnih izolatorjih. Zmanjša se tudi torzijsko nihanje stavbe. Stavba niha praktično kot togo telo, kar se ne zgodi pri osnovni stavbi SPEAR. In this thesis, we address the seismic analysis of a three-story reinforced concrete frame building, i.e. SPEAR building, and the seismic analyses for two variants of the seismically isolated SPEAR building, where either elastomeric or frictional seismic isolators are used. First, we discuss the theory of seismic isolation of structures and the equations that describe the dynamic properties of a seismically isolated building using a two-degree-of-freedom (2DOF) model, which includes seismic isolation and the building structure. We then present the requirements for the use of anti-seismic devices in accordance with the new version of Eurocode 8 and the application of the new elastic response spectrum. Furthermore, we introduce the SPEAR building and some types of seismic isolators, two of which are used for the seismic analysis of the seismically isolated versions of the SPEAR building. Additionally, we analyze the circular frequencies for the first mode of vibration of the 2DOF system depending on the properties of the seismic isolators and considering the requirements of Eurocode 8. Finally, we conduct a seismic analysis of all variants of the SPEAR building and compare the seismic demands on the building structure. We find that the seismic demand on the seismic isolators is within the allowable limits, while the seismic demand on the structural elements for the seismically isolated versions of the SPEAR building is significantly lower compared to the non-isolated building. The reduction of seismic demand on the structure is due to the lengthening of the period of vibration, with an additional reduction in the seismic demand due to the energy dissipation in the seismic isolators. The torsional vibration of the building is also reduced. The building vibrates almost as a rigid body, which was not the case with the original SPEAR building. diplomske naloge gradbeništvo potresna izolacija potresne zahteve armiranobetonska stavba stavba SPEAR sistemi 2DOF Evrokod 8 graduation thesis civil engineering potresna izolacija potresne zahteve armiranobetonska stavba stavba SPEAR sistemi 2DOF Evrokod 8 true false false [S. Hassanien] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2024-09-21 07:45:25 2024-09-21 07:45:28 2025-08-08 13:41:42 0000-00-00 00:00:00 2024 0 Ljubljana 2024 Ljubljana 1 spletni vir (1 datoteka PDF (XIII, 56 str.)) 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 624.012.45:624.042.7(043.2) 165034 208963075 16517.pdf 16517.pdf 1 5085A313DD02878B2976E0FC579654F4 91cc08e0b50eafa30cf78a1ffa8f0d384b8a0f053ba77eefebe12e0e1ded1093 986df9b8-77dc-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=191527 Fakulteta za gradbeništvo in geodezijo 0 0 0