Earthquake-Induced Deformation Analysis of a Bridge Approach Embankment in Missouri |
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Authors: | W Liu R Luna R W Stephenson S Wang |
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Institution: | (1) Parsons Brinkerhoff, Lawrenceville, NJ 08648, USA;(2) Missouri University of Science and Technology, Rolla, MO 65409, USA; |
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Abstract: | Earthquake-induced deformations for a bridge approach earth embankment are predicted using a calibrated numerical model. The
constitutive soil model is a modified hyperbolic model that uses Masing rules and incremental pore pressure relations. The
model was calibrated using both laboratory and field data. A shaking table physical model was used to verify the numerical
simulation. Additionally, the upper San Fernando dam was modeled to reproduce the deformations in the 1971 earthquake. The
subsurface and embankment soil conditions were characterized using field and laboratory methods. The model developed was used
to predict the earthquake-induced deformations of an approach embankment to Bridge A1466 in the NMSZ near Hayti, Missouri,
where strong earthquakes M > 7.0 are anticipated in the next 50 years. |
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Keywords: | |
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