ABSTRACT
An important aspect is also how to define the stability limit state of the shell structure of a tank or silo, since there exist cases where the occurence of buckles does not automatically mean loss of stability in terms of an ultimate limit state. Buckling may cause collapse of the structure or it might only produce local deformations (“buckles”), which would merely affect the serviceability requirements in terms of a deteriorated
TANKS
ultimate strength cyclic plasification
Fig. 3. Response of tanks and silos to filling load
TANKS
Fig. 4. Response of tanks and silos to wind load
TANKS SILOS
anchored tank collapse of roof structure
urn
unanchored tank
uplifting —> cyclic plastification
Fig. 5. Response of tanks and silos to foundation settlements
TANKS SILOS
bending of endring
Fig. 6. Response of tanks and silos to earthquake
appearance. Which applies in a special case depends on the detailed structural behaviour. Fig. 3 - 7 display a number of limit states and failure modes relevant to practical load-conditions, which could occur with typical tanks and silos.
