Primerjava rezultatov metode z vodoravnimi silami z rezultati modalne analize s spektri odziva

diplomsko delo univerzitetnega študijskega programa

Denis Imamović (Author), Matjaž Skrinar (Mentor)

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;lastna frekvenca;nihajni čas;elastični spekter odziva;metoda z vodoravnimi silami;modalna analiza s spektri odziva;

Data

Language:	Slovenian
Year of publishing:	2011
Source:	Maribor
Typology:	2.11 - Undergraduate Thesis
Organization:	UM FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
Publisher:	[D. Imamović]
UDC:	624.131.55(043.2)
COBISS:	15811606
Views:	3405
Downloads:	619
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Lateral force method of analysis and modal response spectrum analysis: the comparison of results
Secondary 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.
Secondary keywords:	geotechnics;seismis analysis;dynamic model;degrees of freedom;horizontal displacements;Eurocode 8;eigenfrequency;elastic response spectrum;lateral force method of analysis;modal response spectrum analysis;
URN:	URN:SI:UM:
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. v Mariboru, Fak. za gradbeništvo, Gradbeništvo
Pages:	IX, 67 f.
Keywords (UDC):	applied sciences;medicine;technology;uporabne znanosti;medicina;tehnika;engineering;technology in general;inženirstvo;tehnologija na splošno;civil and structural engineering in general;gradbena tehnika;gradbeništvo;substructures;earthworks;foundations;tunnelling;spodnje nosilne konstrukcije (podporne konstrukcije;spodnji ustroji);zemeljska dela (ki so rezultat izkopavanja in nasipanja);temelji;gradnja predorov;
ID:	992937