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QUANTIFYING BUILDING ENGINEERING DEMAND PARAMETERS IN SEISMIC EVENTS

Engineering Demand Parameters, such as inter-storey drift or floor 
accelerations, can be correlated to damage within the structure. While current code provisions exist to estimate Engineering Demand Parameters to use in design of components within the structure, such as non-structural elements, these code provisions are not structure specific and their accuracy has not been rigorously quantified. This paper involves a robust and comprehensive study to quantify Engineering Demand Parameters for 180 frame and wall structural configurations. A range of design ductility, 
design target drift and structural heights are considered. Dynamic inelastic time history analysis is carried out using a suite of ground motion records to obtain the Engineering Demand Parameter of interest. It is found that increasing the flexibility of the structure by either increasing design ductility or target drift increases drift in the first floor columns in the frame structure and on all floors in the wall structure. The code provisions were found 
to be adequate when considering median values, however drift demands were exceeded at the 84th percentile in several cases. Increasing the flexibility resulted in decreased acceleration demands. All 84th percentile acceleration demands are well within code limits. 
Reference:
NZSEE Annual Technical Conference & AGM, 13-15 April 2012, Christchurch
Organization:
University of Canterbury, Christchurch
New Zealand
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