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    Probabilistic Seismic Performance Assessment of a Bridge-Foundation-Soil System

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    Author
    Bradley, B.
    Cubrinovski, M.
    Dhakal, R.P.
    MacRae, G.
    Date
    2009
    Permanent Link
    http://hdl.handle.net/10092/2523

    This paper presents the probabilistic seismic performance assessment of an actual bridge-foundation-soil system, the Fitzgerald Avenue twin bridges. A two-dimensional plane strain finite element model of the longitudinal direction of the bridge-foundation-soil system is modelled using advanced soil and structural constitutive models. Ground motions are selected based on the seismic hazard deaggregation at the site, which is dominated by both fault and distributed seismicity. Based on rigorous examination of several deterministic analyses, engineering demand parameters (EDP’s) are determined which capture the global and local demand and damage to the bridge and foundation, and multiple ground motions at various intensity levels are used to conduct seismic response analyses of the system. It was found that the non-horizontal layering of the sedimentary soils has a pronounced effect on the seismic demand distribution to the bridge components, of which the north abutment piles and central pier are critical in the systems seismic performance.

    Subjects
    Fields of Research::290000 Engineering and Technology::290800 Civil Engineering::290801 Structural engineering
     
    Fields of Research::290000 Engineering and Technology::290800 Civil Engineering::290805 Geotechnical engineering
    Collections
    • Engineering: Conference Contributions [2012]
    Rights
    https://hdl.handle.net/10092/17651

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