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Rigid Inclusions, MSE Walls, and Soft Soils—A Case History from Washington, DC
Rigid inclusions will be used to support roadway fills and mechanically stabilized earth (MSE) walls for localized areas along the South Capitol Street Corridor Project. Ground improvement is required over several portions of the project footprint, including beneath MSE walls and embankment fills up to 35 ft high. Retaining walls 6 and 7 (RW 6&7), totaling over 1,000 feet in total length, will be constructed to add a new southbound exit ramp from I-295 to Suitland Avenue. RW 6&7 will run parallel to each other before diverging into separate areas. The majority of the walls for the exit ramp will be built in an area of recent fill placed within former alluvial floodplains and shorelines of the Anacostia River that contain soft soils susceptible to large vertical and lateral movements. The ground improvement design was an iterative process that required frequent collaboration between the geotechnical engineer, the general contractor, the ground improvement contractor, and the MSE wall design-build team. This paper presents the design process and the collaboration between the parties to reach the final solution and presents the results of the settlement monitoring program that was used to determine when the wall facing could be installed.
Rigid Inclusions, MSE Walls, and Soft Soils—A Case History from Washington, DC
Rigid inclusions will be used to support roadway fills and mechanically stabilized earth (MSE) walls for localized areas along the South Capitol Street Corridor Project. Ground improvement is required over several portions of the project footprint, including beneath MSE walls and embankment fills up to 35 ft high. Retaining walls 6 and 7 (RW 6&7), totaling over 1,000 feet in total length, will be constructed to add a new southbound exit ramp from I-295 to Suitland Avenue. RW 6&7 will run parallel to each other before diverging into separate areas. The majority of the walls for the exit ramp will be built in an area of recent fill placed within former alluvial floodplains and shorelines of the Anacostia River that contain soft soils susceptible to large vertical and lateral movements. The ground improvement design was an iterative process that required frequent collaboration between the geotechnical engineer, the general contractor, the ground improvement contractor, and the MSE wall design-build team. This paper presents the design process and the collaboration between the parties to reach the final solution and presents the results of the settlement monitoring program that was used to determine when the wall facing could be installed.
Rigid Inclusions, MSE Walls, and Soft Soils—A Case History from Washington, DC
Swift, Sonia Sorabella (author) / Sullivan, Andy (author) / Rayl, Michael (author) / Giese, Christopher (author)
International Foundations Congress and Equipment Expo 2021 ; 2021 ; Dallas, Texas
IFCEE 2021 ; 472-484
2021-05-06
Conference paper
Electronic Resource
English
Rigid Inclusions, MSE Walls, and Soft Soils—A Case History from Washington, DC
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