What is Push-Over Analysis?
•Push-over analysis is a technique by which a computer
model of the building is subjected to a
lateral load of a certain shape (i.e., inverted triangular or uniform).
•The intensity of the lateral load is slowly increased
and the sequence of cracks, yielding, plastic
hinge formations, and failure of various structural
components is recorded.
•Push-over analysis can provide a significant insight
into the weak links in seismic performance of
a structure.
•A series of iterations are usually required during
which, the structural deficiencies observed in
one iteration, are rectified and followed by another.
•This iterative analysis and design process continues
until the design satisfies a pre-established
performance criteria.
•The performance criteria for push-over analysis is
generally established as the desired state of
the building given a roof-top or spectral displacement amplitude.
