Luz Elizabeth Vasquez Munoz (Avtor), Matjaž Dolšek (Avtor)

Povzetek

Unanchored steel storage tanks are used in industrial plants to store oil and other petrochemical liquids. In a major earthquake, such tanks may sustain different types of damage, including elasto-plastic buckling in the shape of an elephant’s foot, which is the object of the research. The methodology introduced in this paper consists of cloud-based 1D site response analysis (SRA) and pushoverbased seismic performance assessment of the tank wall using a 3D non-linear model of the tank. The SRA, which considers the recorded ground motions on the rock outcrop and the sample of interval shear-wave velocity profiles, is carried out to estimate spectral accelerations at the tank impulsive period. By adopting the code-based model of hydrodynamic pressures, the seismic demand on the tank wall is then calculated by pushover analysis. The risk-targeted decision model is used for safety verification. The proposed methodology is demonstrated through an example of a large liquid storage tank for which it is shown that the fragility function for peak ground acceleration at the rock outcrop is on the left side of the target fragility function, indicating that the tank cannot be considered safe from elephant-foot buckling. The introduced assessment process is relatively simple if the cloud-based SRA is automated. However, further experimental and numerical investigations are required to confirm the validity range of the pushover analysis for the seismic performance assessment of tanks.

Ključne besede

elephant-foot buckling;pushover analysis;seismic fragility analysis;seismic risk;site response analysis;unanchored steel storage tanks;uklon slonje noge;potisna analiza;analiza potresne ranljivosti;potresno tveganje;analiza odziva tal;nepritrjeni jekleni rezervoarji;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FGG - Fakulteta za gradbeništvo in geodezijo
UDK: 624.042.7
COBISS: 165428483 Povezava se bo odprla v novem oknu
ISSN: 0098-8847
Št. ogledov: 73
Št. prenosov: 7
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: uklon slonje noge;potisna analiza;analiza potresne ranljivosti;potresno tveganje;analiza odziva tal;nepritrjeni jekleni rezervoarji;
Vrsta dela (COBISS): Članek v reviji
Strani: str. 4126-4147
Letnik: ǂVol. ǂ52
Zvezek: ǂiss. ǂ13
Čas izdaje: okt. 2023
DOI: 10.1002/eqe.3903
ID: 20386143