Damage Classification Information

NameO'Rourke and So (2000) - Storage Tank
Hazard TypeEarthquake
Plant Unit TypeStorage Tank
Description

The damage states used to characterize component damage are intended to mimic the damage state descriptions in the HAZUS Methodology.

States
NoCodeDescription
1.DS1

No damage to tank or I/O pipes.

2.DS2

Damage to roof, minor loss of contents, minor damage to piping, but no elephant-foot buckling.

3.DS3

Elephant-foot buckling with minor loss of content.

4.DS4

Elephant-foot buckling with major loss of content, severe damage.

5.DS5

Total failure, tank collapse.

ReferencesO'Rourke, M. J.; So, P., "Seismic Fragility Curves for On-Grade Steel Tanks", 2000
AccessPublic
Created: Serkan GIRGIN, 2011/08/02 15:32:49 – Updated: Serkan GIRGIN, 2016/03/01 14:21:58

Risk States

NoDamage StateScenario ParametersValidity Conditions
1.DS1LOC State: None--
2.DS2LOC State: Minor--
3.DS3LOC State: Moderate--
4.DS4LOC State: Major--
5.DS5LOC State: Catastrophic--

Fragility Curves

NoNameParameterUnitValidity Conditions
1.O'Rourke and So (2000)PGAgBase Type: On-ground; Construction Material: Steel; Storage Condition: Atmosphericlog μ̃4-
2.O'Rourke and So (2000), Fill ≥ 50%PGAgBase Type: On-ground; Construction Material: Steel; Storage Condition: Atmospheric; Fill Percent: > 50 %vlog μ̃41
3.O'Rourke and So (2000), H/D < 0.7PGAgφhd: < 0.7 m/m; Base Type: On-ground; Construction Material: Steel; Storage Condition: Atmosphericlog μ̃4-
4.O'Rourke and So (2000), H/D ≥ 0.7PGAgφhd: > 0.7 m/m; Base Type: On-ground; Construction Material: Steel; Storage Condition: Atmosphericlog μ̃4-
5.O'Rourke and So (2000), Fill < 50%PGAgBase Type: On-ground; Construction Material: Steel; Storage Condition: Atmospheric; Fill Percent: < 50 %vlog μ̃11

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