Title

Response Sensitivity of Highway Bridges to Randomly Oriented Multi-Component Earthquake Excitation

Authors

Authors

K. R. Mackie; K. J. Cronin;B. G. Nielson

Comments

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Abbreviated Journal Title

J. Earthqu. Eng.

Keywords

Earthquake Incidence Angle; Nonlinear Analysis; 3D Ground Motion; Performance-Based Engineering; Stochastic Process; SEISMIC RESPONSE; GROUND MOTIONS; DISTANCE; SPECTRA; SYSTEM; ANGLE; Engineering, Civil; Engineering, Geological; Geosciences, ; Multidisciplinary

Abstract

In two-dimensional and single axis three-dimensional finite element analyses, the ground motion incidence angle can play a significant role in structural response. The effect of incidence angle for three-dimensional excitation and response is investigated in this paper for response of highway bridges. Single-degree-of-freedom elastic and inelastic mean spectra were computed from various orientation techniques and found indistinguishable for combinations of orthogonal horizontal components. Probabilistic seismic demand models were generated for the nonlinear response of five different bridge models. The negligible effect of incidence angle on mean ensemble response was confirmed with a stochastic representation of the ground motions.

Journal Title

Journal of Earthquake Engineering

Volume

15

Issue/Number

6

Publication Date

1-1-2011

Document Type

Article

Language

English

First Page

850

Last Page

876

WOS Identifier

WOS:000304702900003

ISSN

1363-2469

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