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Title:PRIMERJAVA REZULTATOV METODE Z VODORAVNIMI SILAMI Z REZULTATI MODALNE ANALIZE S SPEKTRI ODZIVA
Authors:Imamović, Denis (Author)
Skrinar, Matjaž (Mentor) More about this mentor... New window
Files:.pdf UNI_Imamovic_Denis_2012.pdf (2,00 MB)
 
Language:Slovenian
Work type:Undergraduate thesis (m5)
Organization:FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
Abstract:Za zagotovitev potresne varnosti konstrukcije je potrebno določiti maksimalne projektne obremenitve konstrukcije v skladu s predpisom. Standard EN 1998-1:2006 pri analizi konstrukcije dovoljuje poenostavitve, ki so odvisne od tlorisne pravilnosti konstrukcije, in od pravilnosti konstrukcije po višini. Za konstrukcije, ki so pravilne po višini, je dovoljeno uporabiti metodo z vodoravnimi silami. Pri konstrukcijah, ki ne izpolnjujejo pogojev za pravilnost po višini, je potrebno uporabiti zahtevnejšo modalno analizo s spektri odziva. Čeprav ta metoda za konstrukcije pravilne po višini ni obvezna, jo je za take konstrukcije vseeno dovoljeno uporabiti namesto metode z vodoravnimi silami. Bistvo diplomskega dela je primerjava rezultatov metode z vodoravnimi silami in modalne analize s spektri odziva za izračun potresnih vplivov konstrukcije, ki je pravilna po višini. Za izbrano obravnavano konstrukcijo, pravilno tudi v tlorisu, smo tako na osnovi ravninskih modelov z obema metodama izračunali velikosti projektnih potresnih sil, ter pripadajoči horizontalni etažni pomiki. Tako smo ugotovili smiselnost uporabe metode modalne analize s spektri odziva pri konstrukcijah, pravilnih po višini. Primerjava rezultatov obeh metod je pokazala, da izračunane vrednosti opazno variirajo z izbiro metode.
Keywords:potresna analiza, prostostne stopnje, pravilnost po višini, dinamični model, Evrokod 8, masa in togost konstrukcije, lastne frekvence, nihajni časi, elastični spekter odziva, metoda z vodoravnimi silami, modalna analiza s spektri odziva
Year of publishing:2011
Publisher:[D. Imamović]
Source:Maribor
UDC:624.131.55(043.2)
COBISS_ID:15811606 Link is opened in a new window
NUK URN:URN:SI:UM:DK:TVUQMOET
Views:2752
Downloads:512
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Categories:KTFMB - FG
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Secondary language

Language:English
Title:LATERAL FORCE METHOD OF ANALYSIS AND MODAL RESPONSE SPECTRUM ANALYSIS: THE COMPARISON OF RESULTS
Abstract:To ensure the seismic safety of structures it is necessary to determine the maximum design load of structure in accordance with the regulations. Standard EN 1998-1:2006 at the analysis of the structure allows for certain simplifications, which depend of the structure floor correctness as well as the regularity of structure height. For height correct structures, may be used the lateral force method. Structures that do not qualify for the correctness of the height, it is necessary to use more challenging modal response spectrum analysis. Although this method is not required for height correct constructions, it is allowed to be used instead of the lateral force method of analysis. Essence of the thesis is a comparison of the results of both approaches (lateral force method of analysis and modal response spectrum analysis) to calculate the seismic effects of height correct structure. For the selected structure which is properly also in plan, based on planar models with both methods we calculated sizes of project seismic forces, and their horizontal displacements. In this way we can get an insight into the advisability of using the modal response spectrum analysis in the height correct structures. The results of computational analysis in our case showed that the calculated values vary significantly with the choice of method.
Keywords:seismic analysis, degrees of freedom, height correctness, dynamic model, Eurocode 8, structural mass and stiffness, eigenfrequency, period, elastic response spectrum, lateral force method of analysis, modal response spectrum analysis


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