A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Case History: The Estrondo Landslide Stabilization in Encino, California
During the 1998 El Niño rains, a landslide damaged a 1.5:1 (horizontal to vertical ratio) fill slope approximately 34 m (110-ft) in height that was graded around 1960. The slope was built in an urban neighborhood using low strength compacted fill derived mostly from the local diatomaceous bedrock. The slope had previously experienced several deep failures, which had been locally repaired by removal and recompaction, only to fail again. By 2003, the landslide had moved significantly and there were significant concerns about the safety of neighboring homes. This article describes: (1) the design and implementation of a long term repair to stabilize the landslide using a buttress, two rows of drilled shafts, and tiebacks; (2) the conventional slope stability and numerical modeling analyses used to determine the critical mode of failure for design; (3) the implementation of the landslide stabilization; and most importantly (4) how combining different structural elements resulted in an unanticipated critical failure mode.
Case History: The Estrondo Landslide Stabilization in Encino, California
During the 1998 El Niño rains, a landslide damaged a 1.5:1 (horizontal to vertical ratio) fill slope approximately 34 m (110-ft) in height that was graded around 1960. The slope was built in an urban neighborhood using low strength compacted fill derived mostly from the local diatomaceous bedrock. The slope had previously experienced several deep failures, which had been locally repaired by removal and recompaction, only to fail again. By 2003, the landslide had moved significantly and there were significant concerns about the safety of neighboring homes. This article describes: (1) the design and implementation of a long term repair to stabilize the landslide using a buttress, two rows of drilled shafts, and tiebacks; (2) the conventional slope stability and numerical modeling analyses used to determine the critical mode of failure for design; (3) the implementation of the landslide stabilization; and most importantly (4) how combining different structural elements resulted in an unanticipated critical failure mode.
Case History: The Estrondo Landslide Stabilization in Encino, California
Pradel, Daniel (author)
IFCEE 2018 ; 2018 ; Orlando, Florida
IFCEE 2018 ; 232-244
2018-06-06
Conference paper
Electronic Resource
English
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