Auteur J. Michael Duncan
Documents disponibles écrits par cet auteur (5)
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Thomas L. Brandon, Auteur ; Stephen G. Wright, Auteur ; J. Michael Duncan, Auteur |Following Hurricane Katrina an extensive investigation of the performance of floodwalls in the New Orleans area was undertaken by the U. S. Army Corps of Engineers and others. This investigation included detailed study of failures of cantilevere[...]
Article : texte imprimé
John D. Rice, Auteur ; J. Michael Duncan, Auteur |A procedure is presented for analyzing postconstruction deformation of seepage barriers due to changes in the pore pressure regime after seepage barrier construction. The procedure uses the changes in pore pressures calculated by finite-element [...]
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Christopher L. Meehan, Auteur ; Ross W. Boulanger, Auteur ; J. Michael Duncan, Auteur |Movement along preexisting slickensided rupture surfaces in overconsolidated clay and clay shale slopes can represent a critical sliding mechanism during earthquakes. The seismic behavior of preexisting slickensided surfaces in overconsolidated [...]
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John D. Rice, Auteur ; J. Michael Duncan, Auteur |In a vast majority of cases, seepage barriers increase the reliability of dams. However, it is important to recognize that seepage barriers often drastically increase hydraulic gradients around the boundaries of the barrier, and through any wind[...]
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J. Michael Duncan, Auteur ; Thomas L. Brandon, Auteur ; Stephen G. Wright, Auteur |Failures of I-walls during Hurricane Katrina were responsible for many breaches in the flood protection system in New Orleans. Six breaches were examined in detail by Task Group 7 of the Interagency Performance Evaluation Taskforce. Four of thes[...]
