Collapse of Geogrid‐Reinforced Retaining Structure
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VIEW THE REPLYPublication: Journal of Performance of Constructed Facilities
Volume 8, Issue 4
Abstract
The use of cohesive soils in geogrid‐reinforced backfills requires consideration of the performance of these materials under both as‐compacted and long‐term conditions. Depending on the as‐compacted conditions, the long‐term performance, as a result of in service saturation, can lead to strength loss and failure of such structures. This paper documents the case history of a geogrid reinforced retaining wall, constructed with cohesive backfill, that failed. Several different failure modes were observed along the wall. The results of extensive field and laboratory testing programs and engineering analyses to investigate the causes of failure are presented. These studies permit the different observed failure modes to be explained. Deficiencies in design and construction quality control are identified. The need for site‐specific design considerations rather than generic design procedures for such structures is demonstrated.
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References
1.
Federal Highway Administration (FHWA). (1990). “Reinforced soil structures: design and construction guidelines.” Rep. No. FHWA‐RD‐89‐043, Washington, D.C.
2.
U.S. Department of Navy. (1982). “Foundations and earth structures.” Rep., NAVFACDM‐7.2.
3.
U.S. Bureau of Reclamation. (1974). Earth manual, 2nd Ed.
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Copyright © 1994 American Society of Civil Engineers.
History
Received: Feb 12, 1993
Published online: Nov 1, 1994
Published in print: Nov 1994
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