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

    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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