Location

Arlington, Virginia

Session Start Date

8-11-2008

Session End Date

8-16-2008

Abstract

A “Reinforced Soil Retaining Wall” (RSR) wall of 10.5m height collapsed about 5 years after construction. HDPE geogrids were used as reinforcement. The facia panels suffered outward movements during construction and the deformations continued to increase. A 16m long stretch of the RSR wall failed and the failure wedge cut through four layers of reinforcement. The paper analyses the role of different factors in causing the failure. Tension tests were carried out on the geogrids exhumed from the failed zone. A significant loss in the strength of these grids was found which may be attributed to the high ambient temperatures in the area where the RSR wall is located. The influence of other factors in causing the failure are also brought out and discussed.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Sixth Conference

Publisher

Missouri University of Science and Technology

Publication Date

8-11-2008

Document Version

Final Version

Rights

© 2008 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Practical Lessons from Failure of a Reinforced Soil Retaining Wall on a Major Highway

Arlington, Virginia

A “Reinforced Soil Retaining Wall” (RSR) wall of 10.5m height collapsed about 5 years after construction. HDPE geogrids were used as reinforcement. The facia panels suffered outward movements during construction and the deformations continued to increase. A 16m long stretch of the RSR wall failed and the failure wedge cut through four layers of reinforcement. The paper analyses the role of different factors in causing the failure. Tension tests were carried out on the geogrids exhumed from the failed zone. A significant loss in the strength of these grids was found which may be attributed to the high ambient temperatures in the area where the RSR wall is located. The influence of other factors in causing the failure are also brought out and discussed.