United States Department of Transportation
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Seismic vulnerability of existing bridge substructures supporting the I-55 undercrossing at MS-302 (Goodman Road).
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2002-10-01
[PDF-15.08 MB]
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Edition:Final report.
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Abstract:As part of a work assignment issued by the Mississippi Department of Transportation,
Bridge Division, the following report has been prepared to document results of an
investigation of seismic vulnerability of the primary structural elements supporting the
deck of the existing I-55 Undercrossing at MS-302 (Goodman Road). In order to assess
the complex nature of the response to seismic excitation, a multi-level analysis has been
performed, including: 1) a two-dimensional pushover analysis of a typical bent, 2) an
eigenvalue and linear response spectrum analysis of a three-dimensional, fixed-base,
finite element model of the four-span, concrete structural system, and 3) a threedimensional,
nonlinear, time history analysis of the soil-structure system including the
embankments and the soil column to a depth of about 100 ft below the deck level.
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