Non-linear Static Push-over Analysis
pushover analysis is becoming a popular tool for seismic performance
evaluation of existing and new structures. The expectation is that the
pushover analysis will provide adequate information on seismic demands imposed
by the design ground motion on the structural system and its components. The
purpose of the paper is to summarize the basic concepts on which the pushover
analysis can be based, assess the accuracy of pushover predictions, identify
conditions under which the pushover will provide adequate information and,
perhaps more importantly, identify cases in which the pushover predictions
will be inadequate or even misleading.
Necessity of Non-Linear Static Pushover
existing building can become seismically deficient since seismic design code
requirements are constantly upgraded and advancement in engineering knowledge.
Further, Indian buildings built over past two decades are seismically
deficient because of lack of awareness regarding seismic behaviour of
structures. The widespread damage especially to RC buildings during
earthquakes exposed the construction practices being adopted around the world,
and generated a great demand for seismic evaluation and retrofitting of
existing building stocks.
What is Non-Linear Static Push-over Analysis?