A procedure for combining vertical and horizontal seismic action effects

C. J. Collier, Amr S. Elnashai

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

The vertical component of earthquake ground motion has generally been neglected in the earthquake-resistant design of structures. This is gradually changing due to the increase in near-source records obtained recently, coupled with field observations confirming the possible destructive effect of high vertical vibrations. In this paper, simple procedures are suggested for assessing the significance of vertical ground motion, indicating when it should be included in the determination of seismic actions on buildings. Proposals are made for the calculation of elastic and inelastic vertical periods of vibration incorporating the effects of vertical and horizontal motion amplitude and the cross-coupling between the two vibration periods. Simplified analysis may then be used to evaluate realistic vertical forces by employing the vertical period of vibration with pertinent spectra without resorting to inelastic dynamic analysis. Finally, a procedure is suggested for combining vertical and horizontal seismic action effects which accounts for the likelihood of coincidence, or otherwise, of peak response in the two directions.

Original languageEnglish (US)
Pages (from-to)521-539
Number of pages19
JournalJournal of Earthquake Engineering
Volume5
Issue number4
DOIs
StatePublished - Oct 1 2001

Fingerprint

Earthquakes
vibration
Dynamic analysis
ground motion
earthquake
dynamic analysis
effect

All Science Journal Classification (ASJC) codes

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

Cite this

Collier, C. J. ; Elnashai, Amr S. / A procedure for combining vertical and horizontal seismic action effects. In: Journal of Earthquake Engineering. 2001 ; Vol. 5, No. 4. pp. 521-539.
@article{56d500533cb243b7aa8303f996426e96,
title = "A procedure for combining vertical and horizontal seismic action effects",
abstract = "The vertical component of earthquake ground motion has generally been neglected in the earthquake-resistant design of structures. This is gradually changing due to the increase in near-source records obtained recently, coupled with field observations confirming the possible destructive effect of high vertical vibrations. In this paper, simple procedures are suggested for assessing the significance of vertical ground motion, indicating when it should be included in the determination of seismic actions on buildings. Proposals are made for the calculation of elastic and inelastic vertical periods of vibration incorporating the effects of vertical and horizontal motion amplitude and the cross-coupling between the two vibration periods. Simplified analysis may then be used to evaluate realistic vertical forces by employing the vertical period of vibration with pertinent spectra without resorting to inelastic dynamic analysis. Finally, a procedure is suggested for combining vertical and horizontal seismic action effects which accounts for the likelihood of coincidence, or otherwise, of peak response in the two directions.",
author = "Collier, {C. J.} and Elnashai, {Amr S.}",
year = "2001",
month = "10",
day = "1",
doi = "10.1142/S136324690100056X",
language = "English (US)",
volume = "5",
pages = "521--539",
journal = "Journal of Earthquake Engineering",
issn = "1363-2469",
publisher = "Taylor and Francis Ltd.",
number = "4",

}

A procedure for combining vertical and horizontal seismic action effects. / Collier, C. J.; Elnashai, Amr S.

In: Journal of Earthquake Engineering, Vol. 5, No. 4, 01.10.2001, p. 521-539.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A procedure for combining vertical and horizontal seismic action effects

AU - Collier, C. J.

AU - Elnashai, Amr S.

PY - 2001/10/1

Y1 - 2001/10/1

N2 - The vertical component of earthquake ground motion has generally been neglected in the earthquake-resistant design of structures. This is gradually changing due to the increase in near-source records obtained recently, coupled with field observations confirming the possible destructive effect of high vertical vibrations. In this paper, simple procedures are suggested for assessing the significance of vertical ground motion, indicating when it should be included in the determination of seismic actions on buildings. Proposals are made for the calculation of elastic and inelastic vertical periods of vibration incorporating the effects of vertical and horizontal motion amplitude and the cross-coupling between the two vibration periods. Simplified analysis may then be used to evaluate realistic vertical forces by employing the vertical period of vibration with pertinent spectra without resorting to inelastic dynamic analysis. Finally, a procedure is suggested for combining vertical and horizontal seismic action effects which accounts for the likelihood of coincidence, or otherwise, of peak response in the two directions.

AB - The vertical component of earthquake ground motion has generally been neglected in the earthquake-resistant design of structures. This is gradually changing due to the increase in near-source records obtained recently, coupled with field observations confirming the possible destructive effect of high vertical vibrations. In this paper, simple procedures are suggested for assessing the significance of vertical ground motion, indicating when it should be included in the determination of seismic actions on buildings. Proposals are made for the calculation of elastic and inelastic vertical periods of vibration incorporating the effects of vertical and horizontal motion amplitude and the cross-coupling between the two vibration periods. Simplified analysis may then be used to evaluate realistic vertical forces by employing the vertical period of vibration with pertinent spectra without resorting to inelastic dynamic analysis. Finally, a procedure is suggested for combining vertical and horizontal seismic action effects which accounts for the likelihood of coincidence, or otherwise, of peak response in the two directions.

UR - http://www.scopus.com/inward/record.url?scp=0035486636&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035486636&partnerID=8YFLogxK

U2 - 10.1142/S136324690100056X

DO - 10.1142/S136324690100056X

M3 - Article

AN - SCOPUS:0035486636

VL - 5

SP - 521

EP - 539

JO - Journal of Earthquake Engineering

JF - Journal of Earthquake Engineering

SN - 1363-2469

IS - 4

ER -