Comparative Study of Nonlinear Static and Time-History Analyses of Typical Korean STS Container Cranes

Table 5

Damage criteria for cranes according to PIANC [30].

Level of damage	Degree I	Degree II	Degree III	Degree IV
Displacement	Without derailment	With derailment	Without overturning	Overturning
Peak response stresses/strains
(i) Upper structures	Elastic	Elastic	Plastic (<μ/εmax for upper structure)	Plastic (≥μ/εmax for upper structure)
(ii) Portal frame	Elastic	Plastic (<μ/εmax for portal frame)	Without collapse	Collapse
(iii) Toe	Elastic	Damage to toe (including pull-out of vehicle, fracture of anchor/brakes)

Note. μ and ε_max are the ductility factor and strain limit for the structure, respectively.