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Pushover-based seismic performance assessment of unanchored steel storage tanks with different slenderness ratios
ID
Vasquez Munoz, Luz Elisabeth
(
Avtor
),
ID
Može, Primož
(
Avtor
),
ID
Dolšek, Matjaž
(
Avtor
)
PDF - Predstavitvena datoteka,
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MD5: 3E5A30F655A0E777C0DB402376B552E5
URL - Izvorni URL, za dostop obiščite
https://www.sciencedirect.com/science/article/pii/S0141029624003043
Galerija slik
Izvleček
Unanchored steel storage tanks, commonly used in industrial facilities, can suffer damage during major earthquakes due to various failures. To better understand the seismic behaviour of such structures, a pushover-based seismic performance assessment of four tanks with varying slenderness ratios was performed. The emphasis was placed on understanding the relationship between engineering demand parameters, tank slenderness ratio, and wall geometrical imperfections, which were, however, imposed only to the lower course around the tank circumference to assess the upper limit of the effect of geometrical imperfections on the elephant-foot buckling (EFB). The findings reveal that axial compressive stress in the tank wall correlates with increased slenderness and geometrical imperfections. This implies that the axial compressive stress in the wall of broader tanks is relatively low, and the bulging at the bottom of the wall is mainly due to high hydrodynamic pressure and the resulting hoop stress. In contrast, the wall of slender tanks buckles primarily due to high axial stresses, leading to EFB. Through dynamic analysis, the study showed that the pushover analysis can underestimate the axial stress if the tank’s base plate is uplifted significantly before EFB occurs. The effect of the impact should thus be considered, especially in the case of slender tanks, because the base plate uplift mechanism is more pronounced than in broader tanks. Further research is needed for a more accurate prediction of the axial compressive stress in slender tanks. However, the safety margin in the post-yielding range is low because the yielding area of the tank wall rapidly increases after the occurrence of steel yielding. In the absence of a detailed 3D model of tanks, simplified formulas for estimating stresses in the tank wall may be used for the broader tanks but not for more slender tanks because of their inability to simulate the highly non-linear relationship between the ground motion intensity and the stresses observed in the plastic region of the tank wall.
Jezik:
Angleški jezik
Ključne besede:
engineering structures
,
civil engineering
,
earthquake engineering
,
unanchored steel storage tanks
,
pushover analysis
,
hydrodynamic pressure
,
elephant-foot buckling
,
steel yielding
,
base plate uplifting
,
axial compressive stress
,
circumferential membrane stress
,
hoop stress
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FGG - Fakulteta za gradbeništvo in geodezijo
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2024
Št. strani:
16 str.
Številčenje:
Vol. 305, art. 117742
PID:
20.500.12556/RUL-156245
UDK:
624.07
ISSN pri članku:
0141-0296
DOI:
10.1016/j.engstruct.2024.117742
COBISS.SI-ID:
188733187
Datum objave v RUL:
15.05.2024
Število ogledov:
446
Število prenosov:
73
Metapodatki:
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Objavi na:
Gradivo je del revije
Naslov:
Engineering structures
Skrajšan naslov:
Eng. struct.
Založnik:
Elsevier
ISSN:
0141-0296
COBISS.SI-ID:
7750666
Licence
Licenca:
CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:
To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
gradbene konstrukcije
,
gradbeništvo
,
potresno inženirstvo
Projekti
Financer:
EC - European Commission
Program financ.:
H2020
Številka projekta:
721816
Naslov:
Extreme loading analysis of petrochemical plants and design of metamaterial-based shields for enhanced resilience
Akronim:
XP-RESILIENCE
Financer:
ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
Številka projekta:
P2-0185
Naslov:
Potresno inženirstvo
Financer:
ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
Številka projekta:
P2-0158
Naslov:
Gradbene konstrukcije in gradbena fizika
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