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Development of Improved Intensity Measures and Improved ShakeMaps for Loss Estimation and Emergency Response

by Eduardo Miranda, Marios Kyriakides and Qiang Fu

Miranda, Eduardo, Marios Kyriakides and Qiang Fu (2006). Development of Improved Intensity Measures and Improved ShakeMaps for Loss Estimation and Emergency Response. SMIP06 Seminar on Utilization of Strong-Motion Data, p. 63 - 80.

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Abstract

An improved measure of ground motion intensity that is well correlated with structural and many kinds of nonstructural damage is presented. The proposed intensity measure is based on the peak interstory drift demand computed using a simplified continuous model that consists of a combination of a flexural beam and a shear beam. This new intensity measure accounts for the influence of higher modes and for concentrations of lateral deformation demands along the height of buildings. It is then proposed to compute this new intensity measure at all stations that recorded a seismic event in order to generate improved ShakeMaps for loss estimation and emergency response. The 2004 Parkfield event is used to illustrate both concepts.