Analiza potresne odpornosti zidane konstrukcije

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Language:	Slovenian
Year of publishing:	2009
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[M. Ganc]
UDC:	624.012.4:624.042.7(043.2)
COBISS:	4574817
Views:	2996
Downloads:	855
Average score:	0 (0 votes)
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Secondary language:	English
Secondary title:	Seismic resistance analysis of masonry building
Secondary abstract:	In the Thesis the seismic performance assessment of the masonry building is presented. Firstly, different models for seismic resistance of unreinforced masonry wall are presented and the resistances determined on a typical wall by employing different models are evaluated and discused. Basically three failure mechanisms are considered in seismic performance assessment of masonry wall and are used for defining plastic hinges in equivalent frame. Usually the smallest shear resistance of the wall for the calculation of seismic resistance of simple masonry structure is sliding shear. In the second part of the Thesis an example of two storey masonry building is presented. The simplified nonlinear method for seismic performance assessment of structures, the N2 method was employed in the study. Therefore the nonlinear static (pushover) analysis was performed. Nonlinear behaviour of the material is captured by defining the plastic hinges into elements of equivalent frame. Before the nonlinear analysis with SAP2000 v.12 program, elastic analysis was made first. The pushover curve, which is a part of the N2 method implemented in SIST EN 1998-1: 2005 and represents the relationship between the base shear and the top displacement, was used for determination of target displacement. The damage in the structure was estimated at the target displacement and the peak ground acceleration, which corresponds to the near collapse limit state, was determined. In addition the analysis was performed for the case where the shear resistance due to diagonal cracking was considered the most adequate among other models. Lastly the program 3MURI, which is excellent tool to describe the non-linear in-plane mechanical behaviour of masonry panels was used for seismic performance assessment of the two-storey building. IV
Secondary keywords:	graduation thesis;civil engineering;the masonry building;unreinforced masonry;shear resistance;nonlinear static (pushover) analysis;N2 method;seismic resistance;
File type:	application/pdf
Type (COBISS):	Undergraduate thesis
Thesis comment:	Univ. Ljubljana, Fakulteta za gradbeništvo in geodezijo
Pages:	XIX, 82 str.,
Type (ePrints):	thesis
Title (ePrints):	Seismic resistance analysis of masonry building
Keywords (ePrints):	zidana konstrukcija;nearmirano zidovje;strižna nosilnost;nelinearna statična (»pushover«) analiza;N2 metoda;potresna odpornost
Keywords (ePrints, secondary language):	masonry building;unreinforced masonry;shear resistance;non- linear static (pushover) analysis;N2 method;seismic resistance
Abstract (ePrints):	V diplomski nalogi je narejena ocena potresne odpornosti zidane konstrukcije. V prvem delu obravnavamo različne modele za določevanje odpornosti nearmiranega zidu ter primerjamo rezultate za izbran nearmiran zid. Za analizo potresne odpornosti zidane konstrukcije so upoštevani trije porušni mehanizmi zidu, izračunane nosilnosti so uporabljene za definiranje plastičnih členkov v ekvivalentnem okvirju. Strižna nosilnost zidovja, ki se nanaša na zdrs je merodajna nosilnost za izračun potresne odpornosti enostavne zidane konstrukcije. V drugem delu naloge obravnavamo dvoetažno zidano stavbo. Potresno odpornost zidane konstrukcije smo ocenili z N2 metodo. Tako smo najprej izvedli nelinearno statično (pushover) analizo. Materialna nelinearnost konstrukcije je v modelu zajeta s postavitvijo plastičnih členkov v linijskih elementih ekvivalentnega okvirja. Najprej je bila narejena elastična analiza, nato pa nelinearna analiza s pomočjo programa SAP2000 v.12. »Pushover« krivuljo, ki prikazuje odnos med celotno prečno silo ob vpetju in pomikom na vrhu konstrukcije, smo uporabili za določitev ciljnega pomika z N2 metodo, ki je vpeljana v standard SIST EN 1998-1: 2005. Pri ciljnem pomiku smo ocenili poškodovanost konstrukcije, dodatno pa smo določili jakost potresa, ki naj bi ga konstrukcija še prenesla. Del nelinearne statične analize je narejen tudi v primeru, da v modelu namesto zdrsa upoštevamo strižne nosilnosti zidov, ki se nanašajo na diagonalne razpoke. Na koncu smo analizo izvedli še s programom 3MURI, ki je odlično orodje za opis nelinearnega mehanskega obnašanja zidov v njihovi ravnini in oceno poškodb zidanih konstrukcij zaradi potresa.
Abstract (ePrints, secondary language):	In the Thesis the seismic performance assessment of the masonry building is presented. Firstly, different models for seismic resistance of unreinforced masonry wall are presented and the resistances determined on a typical wall by employing different models are evaluated and discused. Basically three failure mechanisms are considered in seismic performance assessment of masonry wall and are used for defining plastic hinges in equivalent frame. Usually the smallest shear resistance of the wall for the calculation of seismic resistance of simple masonry structure is sliding shear. In the second part of the Thesis an example of two storey masonry building is presented. The simplified nonlinear method for seismic performance assessment of structures, the N2 method was employed in the study. Therefore the nonlinear static (pushover) analysis was performed. Nonlinear behaviour of the material is captured by defining the plastic hinges into elements of equivalent frame. Before the nonlinear analysis with SAP2000 v.12 program, elastic analysis was made first. The pushover curve, which is a part of the N2 method implemented in SIST EN 1998-1: 2005 and represents the relationship between the base shear and the top displacement, was used for determination of target displacement. The damage in the structure was estimated at the target displacement and the peak ground acceleration, which corresponds to the near collapse limit state, was determined. In addition the analysis was performed for the case where the shear resistance due to diagonal cracking was considered the most adequate among other models. Lastly the program 3MURI, which is excellent tool to describe the non-linear in-plane mechanical behaviour of masonry panels was used for seismic performance assessment of the two-storey building. IV
Keywords (ePrints, secondary language):	masonry building;unreinforced masonry;shear resistance;non- linear static (pushover) analysis;N2 method;seismic resistance
ID:	8309915