Procedure and spectra for analysis of rc structures subjected to strong vertical earthquake loads

Amr S. Elnashai, A. J. Papazoglou

Research output: Contribution to journalArticle

72 Citations (Scopus)

Abstract

In view of the compendium of field evidence and supporting analysis work indicating the possible damaging effects of vertical earthquake ground motion, this paper addresses the problem of code-type vertical force calculation. In light of recent engineering seismology studies of the relationship between vertical and horizontal peak ground acceleration, the inadequacy of the 2/3-rule depicted by codes is highlighted. A simple piece-wise linear relationship is proposed and shown to represent existing strong-motion measurements adequately. Bilinear and inelastic spectra are derived and studied. It is demonstrated that net tensile forces and displacements may ensue, thus eroding the shear resistance of RC columns. A simple procedure is outlined whereby modal analysis may be employed to estimate conservatively vertical earthquake forces on buildings. Finally, areas of further exploration and refinement are identified.

Original languageEnglish (US)
Pages (from-to)121-155
Number of pages35
JournalJournal of Earthquake Engineering
Volume1
Issue number1
DOIs
StatePublished - Jan 1 1997

Fingerprint

Earthquakes
Seismology
earthquake
seismology
strong motion
Modal analysis
ground motion
engineering
analysis
code
calculation
effect

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

Cite this

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Procedure and spectra for analysis of rc structures subjected to strong vertical earthquake loads. / Elnashai, Amr S.; Papazoglou, A. J.

In: Journal of Earthquake Engineering, Vol. 1, No. 1, 01.01.1997, p. 121-155.

Research output: Contribution to journalArticle

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