TY - GEN
T1 - Analysis of a failed basal reinforced embankment
AU - Narayan, Smita
AU - Bhatia, Shobha K.
AU - Corcoran, Brian W.
AU - Nabavi, Ted R.
PY - 2000
Y1 - 2000
N2 - An interesting failure involving geosynthetic basal reinforcement for embankments constructed on soft soil occurred at the Fresh Kills Landfill located on Staten Island, New York. The failure occurred in two stages, in May 1997 and April 1998, respectively. In this study, an attempt has been made to model the embankment from this case history using finite differenc software - FLAC (Fast Lagrangian Analysis of Continua, Itasca Consulting Group, 1996). The goal of such a study is to develop the Finite Difference model as an approximate design tool for future reinforced embankments. FLAC is a two-dimensional finite-difference code that uses an explicit time-marching method to solve governing field equations. The paper presents the results of such an analysis and compares them to the field results. Various stages of construction are simulated by applying different model loading conditions at different stages of the analysis. The development of excess pore water pressures with staged construction are captured by using the undrained mode of analysis. The limits of failure and zone of movement are found to be strikingly similar to the field observations. It is expected that the proposed research will contribute to the state of the art of analyzing and designing embankments reinforced with geosynthetics in basal layers.
AB - An interesting failure involving geosynthetic basal reinforcement for embankments constructed on soft soil occurred at the Fresh Kills Landfill located on Staten Island, New York. The failure occurred in two stages, in May 1997 and April 1998, respectively. In this study, an attempt has been made to model the embankment from this case history using finite differenc software - FLAC (Fast Lagrangian Analysis of Continua, Itasca Consulting Group, 1996). The goal of such a study is to develop the Finite Difference model as an approximate design tool for future reinforced embankments. FLAC is a two-dimensional finite-difference code that uses an explicit time-marching method to solve governing field equations. The paper presents the results of such an analysis and compares them to the field results. Various stages of construction are simulated by applying different model loading conditions at different stages of the analysis. The development of excess pore water pressures with staged construction are captured by using the undrained mode of analysis. The limits of failure and zone of movement are found to be strikingly similar to the field observations. It is expected that the proposed research will contribute to the state of the art of analyzing and designing embankments reinforced with geosynthetics in basal layers.
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U2 - 10.1061/40515(291)27
DO - 10.1061/40515(291)27
M3 - Conference contribution
AN - SCOPUS:58749107154
SN - 9780784405154
T3 - Proceedings of Sessions of Geo-Denver 2000 - Advances in Transportation and Geoenvironmental Systems Using Geosynthetics, GSP 103
SP - 398
EP - 417
BT - Proceedings of Sessions of Geo-Denver 2000 - Advances in Transportation and Geoenvironmental Systems Using Geosynthetics, GSP 103
T2 - Sessions of Geo-Denver 2000 - Advances in Transportation and Geoenvironmental Systems Using Geosynthetics, GSP 103
Y2 - 5 August 2000 through 8 August 2000
ER -