Sekundarni jezik: |
Angleški jezik |
Sekundarni naslov: |
Comparison of technical regulations for seismic analysis of storage tanks |
Sekundarni povzetek: |
In my thesis I compared 4 different regulations for seismic analysis of storage tanks (SIST EN 1998-4, API 650 and EN 14015 standard and New Zealand recommendations). Each regulation has different approach for determening and ensuring stability of storage tanks during earthquake excitation. New Zealand recommendations and Eurcode standard are similar beacuse they both involve deformability of storage tanks. The simpliest is EN 14015 standard because we can determine only longitudinal compressive stresses. In API 650 standard we can determine longitudinal compressive and tensile hoop stresses. All standards and recommendatios give similar results for small ratio of h/R (h is filling height of liquid and R is radius of storage tank) and very different results for heigher values due to (non)consideration of deformability of storage tank. Interaction between soil and tank is also important beacuse it can increase natural period of the tank which can result in increasing values in spectral response. Soil – structure interaction is considered only in Eurocode standard and New Zealand recommendations.
In my thesis I wrote a computer program in Matlab in which we can easily check stability of storage tanks and if appropriate controls are satisfied. |
Sekundarne ključne besede: |
graduation thesis;steel storage tanks;standards;recommendations;comparison;internal forces;tension;Matlab; |
Vrsta datoteke: |
application/pdf |
Vrsta dela (COBISS): |
Diplomsko delo |
Komentar na gradivo: |
Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo |
Strani: |
XIX, 169 str. |
Vrsta dela (ePrints): |
thesis |
Naslov (ePrints): |
Comparison of technical regulations for seismic analysis of storage tanks |
Ključne besede (ePrints): |
jekleni rezervoarji;standardi;priporočila;primerjava;notranje sile;napetosti;Matlab |
Ključne besede (ePrints, sekundarni jezik): |
steel storage tanks;standards;recommendations;comparison;internall forces;tension;Matlab |
Povzetek (ePrints): |
V diplomski nalogi sem med seboj primerjal različne standarde in priporočila za potresno analizo rezervoarjev (SIST EN 1998-4, API 650 ter EN 14015 standard in Novo Zelandska priporočila-NZSE), kjer sem poizkusil ugotoviti glavne razlike med njimi. Vsak standard oz. priporočilo ima drugačen pristop in kontrole za zagotavljanje stabilnosti rezervoarja. Med seboj sta si najbolj podobna Evrokod standard in Novo Zelandska priporočila, saj med drugim upoštevata vpliv deformabilnosti rezervoarja in možno rotacijo dna rezervoarja. Najbolj preprost je EN 14015 standard, kjer lahko določimo samo tlačne vzdolžne napetosti. Pri API 650 standardu pa kontroliramo tlačne in obodne napetosti. Standardi in priporočilo podajo podobne vrednosti pri majhnih razmerjih h/R (h – višina polnjenja rezervoarja, R – polmer rezervoarja) in zelo različne vrednosti pri višjih razmerjih, kjer pride do vpliva deformabilnosti rezervoarja. Vpliv interakcije med rezervoarjem in zemljino je pomemben, saj se z interakcijo povečajo nihajni časi, kar lahko privede do povišanih/zmanjšanih vrednosti v spektru odziva. Vpliv interakcije upoštevata samo Evrokod standard in Novo Zelandska priporočila.
V sklopu diplomske naloge sem izdelal tudi program v Matlabu, kjer na preprost način preverimo stabilnost rezervoarja in ali so ustrezne kontrole za posamezen standard oz. priporočilo izpolnjene. |
Povzetek (ePrints, sekundarni jezik): |
In my thesis I compared 4 different regulations for seismic analysis of storage tanks (SIST EN 1998-4, API 650 and EN 14015 standard and New Zealand recommendations). Each regulation has different approach for determening and ensuring stability of storage tanks during earthquake excitation. New Zealand recommendations and Eurcode standard are similar beacuse they both involve deformability of storage tanks. The simpliest is EN 14015 standard because we can determine only longitudinal compressive stresses. In API 650 standard we can determine longitudinal compressive and tensile hoop stresses. All standards and recommendatios give similar results for small ratio of h/R (h is filling height of liquid and R is radius of storage tank) and very different results for heigher values due to (non)consideration of deformability of storage tank. Interaction between soil and tank is also important beacuse it can increase natural period of the tank which can result in increasing values in spectral response. Soil – structure interaction is considered only in Eurocode standard and New Zealand recommendations.
In my thesis I wrote a computer program in Matlab in which we can easily check stability of storage tanks and if appropriate controls are satisfied. |
Ključne besede (ePrints, sekundarni jezik): |
steel storage tanks;standards;recommendations;comparison;internall forces;tension;Matlab |
ID: |
8312481 |