Development of parametric fragility curves for storage tanks: A Natech approach

Assessing the Effectiveness of Regional Storm Surge Reduction Strategies and Tank Level Structural Mitigation Measures for Aboveground Storage Tanks

“…Fragility models are conditional probability models that describe the probability of exceeding different limit states (such as buckling, floatation, sliding, system failure, and bottom-plate failure for ASTs) for a given hazard (storm surges, wind, and waves) and tank parameters (height, diameter, fill level, liquid density). Existing studies have developed fragility models for storm surge floatation [20,21,25], storm surge sliding [22,23], storm surge dislocation [26,27], storm surge buckling [25][26][27], wind buckling [27,34], system failure [22,23,28,31], and bottom-plate failure [32] during storm surges. Fragility models for AST failures have been developed using probabilistic methods to quantify the probability of AST failure as a function of tank and hazard parameters.…”

“…Yang et al [26] developed parameterized fragility models based on LR for flood displacement, buckling failure modes, and combined displacement and buckling failure assuming them to be independent of each other. Some studies have included the effect of multiple hazards, such as wind, flood, rainfall, and/or waves, in the assessment of AST performance [27][28][29][30][31]. Bernier and Padgett [28] investigated the effect of waves on the buckling behavior of ASTs in conjunction with storm surges and concluded that static analysis is effective in estimating critical buckling load.…”

“…Bernier and Padgett [28] investigated the effect of waves on the buckling behavior of ASTs in conjunction with storm surges and concluded that static analysis is effective in estimating critical buckling load. Mayorga et al [27] provided limit state equations for tank failures due to earthquakes, floods, and wind hazards separately. The effect of tank arrays on their vulnerability was also studied.…”

“…Few studies have assessed the impact of group effects on the failure of ASTs [27], but the existing studies are limited in their applicability to large groups of ASTs, such as the ones observed in Cameron Parish. Furthermore, the system and dislocation fragility model could not capture two tank failures (F a − F p ).…”

State-of-the-Art Review on the Seismic Performance Assessment of On-Ground Steel Cylindrical Tanks

“…He developed IDA-based fragility curves for unanchored liquid storage tanks. Since then, several seismic fragility curves have been developed for liquid storage tanks [119][120][121][122][123][124][125][126]. Table 2 presents some of the most significant curves.…”