TY - JOUR ID - 3139 TI - Characteristics of Second Generation Endurance Time Acceleration Functions JO - Scientia Iranica JA - SCI LA - en SN - 1026-3098 AU - Estekanchi, H.E. AU - Vafai, A. AU - Valamanesh, V. AD - Department of Civil Engineering,Sharif University of Technology Y1 - 2010 PY - 2010 VL - 17 IS - 1 SP - EP - KW - Dynamic pushover KW - Intensifying acceleration functions KW - Endurance Time method DO - N2 - The Endurance Time (ET) method is a time-history based dynamic pushover procedure in which structures are subjected to specially designed, intensifying accelerograms, and their seismic performance is judged based on the time duration needed to satisfy the required design objective. Second generation refers to ET acceleration functions that are generated by application of optimization techniques in order to produce response spectra compliant linearly intensifying accelerograms. In this paper, the major characteristics of a set of second generation ET acceleration functions (ETA20a01-3) are investigated. The template response spectra of this set of ET acceleration functions corresponds to the design spectra of the Iranian National Building Code (Standard 2800) for sti soil (type II). Results show that a good correspondence can be established between the e ective ground motion parameters of earthquakes and ET acceleration functions at speci c target times. Therefore, it is expected that ET acceleration functions can be used to predict various demand parameters of structures subjected to ground motions whose response spectra is more or less compatible with the adopted template response spectra. Discrepancies between characteristics of ET acceleration functions and ground motions have also been discussed. UR - https://scientiairanica.sharif.edu/article_3139.html L1 - https://scientiairanica.sharif.edu/article_3139_9b2f8667dca197c174a612509ea0e8f7.pdf ER -