PLASTICITY AT THE COLUMN
PLASTICITY AT THE COLUMN
(OP)
When designing a moment frame, Do we assume that a plastic hing will be created at the end of the column where the base plate is located? In other words, Should i design the base plate and foundation based on a plastic moment?






RE: PLASTICITY AT THE COLUMN
Depends on what type of structure you have and what level of seismic forces you have in the column... But in the most situations yes the foundation need to be designed at the capacity of the column so the column can rotate and achive it's purpose in disipation of seismic energy. In all the process from yielding to breaking the foundation have to sustain the capacity of the element.
In some cases where you have the overstrenght larger then the R factor of seismic reduction you will not have plastic hinge and your column will stay in elastic domain, there no, you dont have to calculate the foundaiton with the forces from capacity of the column you will use elastic forces from earthquake.
RE: PLASTICITY AT THE COLUMN
RE: PLASTICITY AT THE COLUMN
RE: PLASTICITY AT THE COLUMN
RE: PLASTICITY AT THE COLUMN