Development of hysteretic energy compatible endurance time excitations and its application

Mohammadreza Mashayekhi, Homayoon E. Estekanchi, Hassan Vafai, S. Ali Mirfarhadi

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

The aim of this study is to develop a new simulation procedure of endurance time excitations in which hysteretic energy compatibility is included. Existing methods for simulating excitations consider only amplitude and frequency content of motions and disregard parameters related to cumulative damage of structures. Hysteretic energy consistency, as a cumulative damage-related parameter, is included in the process. The proposed method is applied to generate new excitations. Efficiency of the proposed method is examined in two ways: (1) comparing damage spectra of simulated excitations with recorded ground motions; (2) applying simulated excitations in seismic assessment of three concrete special moment frame structures. Results show considerable compatibility of damage spectra with time history analysis as compared to previous excitations and, therefore, imply an improvement in the simulation process. In the second examination, engineering demand parameters in terms of maximum values and distribution of responses over structural height are predicted by the endurance time analysis and, then, are compared with incremental dynamic analysis results. These comparisons show that the endurance time method can successfully predict seismic demands of structures using the new generated excitations in comparison with existing ones. Finally, it is deduced from results that the proposed method can be employed as an alternative simulation approach for new applications.

Original languageEnglish (US)
Pages (from-to)753-769
Number of pages17
JournalEngineering Structures
Volume177
DOIs
StatePublished - Dec 15 2018
Externally publishedYes

Keywords

  • Endurance time method
  • Hysteretic energy
  • Reinforced concrete moment-resisting frames
  • Seismic response assessment

ASJC Scopus subject areas

  • Civil and Structural Engineering

Fingerprint

Dive into the research topics of 'Development of hysteretic energy compatible endurance time excitations and its application'. Together they form a unique fingerprint.

Cite this