Numerične simulacije potresnega odziva Ytong zidane stavbe

diplomska naloga

Andrej Anžlin (Avtor), Matjaž Dolšek (Mentor), Tomo Cerovšek (Član komisije za zagovor), Matej Fischinger (Član komisije za zagovor), Tatjana Isaković (Član komisije za zagovor), Matija Gams (Komentor)

Povzetek

Ključne besede

gradbeništvo;diplomska dela;UNI;inkrementalna dinamična analiza;ocena potresnega tveganja;modelne preiskave;etažni mehanizem;nelinearna dinamična analiza;histereza pravila;zidane stavbe;porobeton;

Podatki

Jezik:	Slovenski jezik
Leto izida:	2011
Izvor:	Ljubljana
Tipologija:	2.11 - Diplomsko delo
Organizacija:	UL FGG - Fakulteta za gradbeništvo in geodezijo
Založnik:	[A. Anžlin]
UDK:	624(043.2)
COBISS:	5537121
Št. ogledov:	2007
Št. prenosov:	485
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	Seizmic response of Ytong masonry building by utilizing numerical simulations
Sekundarni povzetek:	Construction of test specimen and realization of shake table tests is expensive and unrepeatable. Therefore, it makes sense to supplement experimental results with numerical simulations, which represents an added value to experimental research. Such an approach was adopted in the thesis. We used incremental dynamic analysis and method for seismic risk assessment of structure in order to study the seismic response of Ytong masonry building. In the first part of the thesis, we presented an overview of basic procedures for determination of seismic resistance and response of masonry buildings. We showed the background of numerical simulations, where the main problem is related to development of the model for nonlinear dynamic analysis and the method of solving equations of motion. It is important that the random nature of seismic action was simulated with a set of ground motion records. Because we simulated the response of the building at two different sites, an appropriate set of records was selected for each site. In the second part of the thesis, we examined the shaking table test of reduced scale models (1:4), which were conducted at the Slovenian National Building and Civil Engineering Institute. For this building, we used pre valid mathematical model, which had been developed in previous studies. Based on the results of incremental dynamic analysis, we showed that smaller maximum inter-storey drift of critical storey is smaller in some cases as a result of transfer of energy from the critical bottom storey to the second storey, although the intensity of the seismic action was increased. We have also found out that seismic risk significantly depends on the location of the building.
Sekundarne ključne besede:	graduation thesis;incremental dynamic analysis;seismic risk assessment;model test;story mechanism;nonlinear dynamic analysis;hysteresis rules;masonry structures;autoclaved aerated concrete;
Vrsta datoteke:	application/pdf
Vrsta dela (COBISS):	Diplomsko delo
Komentar na gradivo:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Strani:	XI, 89 str.
Vrsta dela (ePrints):	thesis
Naslov (ePrints):	Seismic response of ytong masonry building by utilizing numerical simulations
Ključne besede (ePrints):	inkrementalna dinamična analiza;ocena potresnega tveganja;modelne preiskave;etažni mehanizem;nelinearna dinamična analiza;histerezna pravila;zidane stavbe;porobeton
Ključne besede (ePrints, sekundarni jezik):	Seismic response of Ytong masonry building by utilizing numerical simulations
Povzetek (ePrints):	Izdelava preizkušancev in izvedba eksperimentov na potresnih mizah je draga in neponovljiva. Zato je smiselno, da se eksperimentalni rezultati dopolnijo z numeričnimi simulacijami, saj jim tako dodamo vrednost. Takšen pristop smo uporabili v okviru diplomske naloge, kjer smo z uporabo inkrementalne dinamične analize in metode za ocene potresnega tveganja analizirali obnašanje Ytong zidane stavbe med potresi. V prvem delu naloge smo predstavili pregled bistvenih pojmov s področja nosilnosti in potresnega odziva zidanih stavb. Prikazali smo ozadje numeričnih simulacij, kjer jedro problema predstavlja določitev modela za izvajanje nelinearne dinamične analize ter način reševanja enačbe gibanja. Pomembno je, da smo potresno obtežbo definirali z večjim številom akcelerogramov, saj smo na ta način upoštevali naključnost potresne obtežbe. Ker smo simulirali odziv stavbe na dveh različnih lokacijah, smo za vsako lokacijo upoštevali primerno skupino akcelerogramov. V drugem delu diplome smo opisali modelne preiskave na potresni mizi, ki so bile opravljene na Zavodu za gradbeništvo Slovenije, in sicer za prototipno zidano stavbo iz porobetona, pomanjšano v merilu 1:4. Za to stavbo smo izvedli numerične simulacije, za katere smo uporabili predhodno validiran matematični model. Na osnovi rezultatov inkrementalne dinamične analize smo pokazali, da se maksimalni etažni pomik kritične etaže v nekaterih primerih zmanjša, čeprav smo povečali jakost potresne obtežbe, kar je posledica prerazporeditve sipanja energije iz prve v kritično etažo. Ugotovili smo, da je potresno tveganje precej odvisno od lokacije objekta.
Povzetek (ePrints, sekundarni jezik):	Construction of test specimen and realization of shake table tests is expensive and unrepeatable. Therefore, it makes sense to supplement experimental results with numerical simulations, which represents an added value to experimental research. Such an approach was adopted in the thesis. We used incremental dynamic analysis and method for seismic risk assessment of structure in order to study the seismic response of Ytong masonry building. In the first part of the thesis, we presented an overview of basic procedures for determination of seismic resistance and response of masonry buildings. We showed the background of numerical simulations, where the main problem is related to development of the model for nonlinear dynamic analysis and the method of solving equations of motion. It is important that the random nature of seismic action was simulated with a set of ground motion records. Because we simulated the response of the building at two different sites, an appropriate set of records was selected for each site. In the second part of the thesis, we examined the shaking table test of reduced scale models (1:4), which were conducted at the Slovenian National Building and Civil Engineering Institute. For this building, we used pre valid mathematical model, which had been developed in previous studies. Based on the results of incremental dynamic analysis, we showed that smaller maximum inter-storey drift of critical storey is smaller in some cases as a result of transfer of energy from the critical bottom storey to the second storey, although the intensity of the seismic action was increased. We have also found out that seismic risk significantly depends on the location of the building.
Ključne besede (ePrints, sekundarni jezik):	Seismic response of Ytong masonry building by utilizing numerical simulations
ID:	8311986