Stability of the Slope of an Embankment Constructed at Washington National Airport.
ARMY MILITARY PERSONNEL CENTER ALEXANDRIA VA
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The stability of an earthen embankment supporting the overrun of Runway 18 at Washington National Airport was examined using the finite element method. The purpose of this work was to study the applicability of the finite element method to the design of embankments. The embankment is partially submerged, layered and reinforced with a geotextile. The embankment was designed by the Baltimore District of the Corps of Engineers based upon the results of analyses using the simplified Bishop method a version of the method of slices which is often used for estimating the stability of slopes. Finite element analyses were conducted considering the embankment with and without a reinforcing geotextile. The factors of safety obtained using the finite element method were compared with those obtained using the simplified Bishop method. Additionally, the progressive developments of failure were examined. Reasonably close agreement was obtained between the corresponding factors of safety obtained using the two methods.
- Civil Engineering