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Seismic Analysis and Design Using the Endurance Time Method, Volume I by Hasssan Vafai, Homayoon Estekanchi

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CHAPTER 3

DURATION PROPERTIES OF THE ENDURANCE TIME EXCITATION FUNCTIONS

3.1 INTRODUCTION

The earthquake motions should be characterized not only by using the parameters related primary to amplitude of shaking, but also number of cycles and strong-motion duration which could play an important role in response of structures.1 There are many studies investigating the correlation between structural responses and parameter related to strong-motion duration. Their conclusions differ profoundly with respect to the influence of strong-motion duration on structural response. In their studies, Hancock and Bommer (2007) have concluded that duration is a secondary parameter and exploration for a direct correlation between duration and damage is not practical. ...

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