United States Department of Transportation
i
Development of LRFD resistance factors for mechanically stabilized earth (MSE) walls : [technical summary].
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2013-12-01
[PDF-1.39 MB]
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Abstract:Bridge approach embankments and many other
transportation-related applications make use of
reinforced earth retaining structures. Mechanically
Stabilized Earth (MSE) walls are designed under
the Load and Resistance Factor Design (LRFD)
methodology, and make use of calibrated load
and resistance factors to check for internal
and external stability. This study focused on
the calibration of resistance factors for bearing
resistance with horizontal ground and sloping
ground in front of MSE walls using scaled models.
In this project, University of Florida researchers
developed resistance factors for MSE walls
subject to sliding and bearing by considering the
influences of variability in soil parameters as
well as different analysis methods (coefficients
of variation, or CVs) using numerical and physical
modeling. Furthermore, load factors for vertical
and horizontal earth pressures were determined
and compared to other reported values as well as
current practice.
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