Location

Chicago, Illinois

Session Start Date

4-29-2013

Session End Date

5-4-2013

Abstract

The construction and design of flood protection embankment levees within coastal areas has become a focal point for infrastructure management. The levees are usually constructed over soils with very poor bearing capacity due to their proximity to flood plains. The foundation soils create issues with long-term settlement, changing the protection height and creating the need to periodically build the levee back to the design height. In order to reduce settlements and the maintenance required to preserve design height protection, a deep foundation is needed for proper long term load transfer. Deep soil mixing (DSM) has become a popular deep foundation solution for just this type of geotechnical issue. Deep soil mixing is a technique used to create cement/soil bonded columns that are utilized as end load bearing elements. The columns are used to bridge the soft foundation soils and create a semi rigid foundation for support of the levee embankment. This solution was recently used by the Corp of Engineers in New Orleans for a protection levee. For this project, a high strength geosynthetic was incorporated into the design and installed over the columns. This paper will outline the considerations necessary for geosynthetic inclusion within deep soil mixed foundations. With the proper use of reinforcement, these applications can become even more efficient in time and cost vs. unreinforced.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Seventh Conference

Publisher

Missouri University of Science and Technology

Publication Date

4-29-2013

Document Version

Final Version

Rights

© 2013 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

Share

 
COinS
 
Apr 29th, 12:00 AM May 4th, 12:00 AM

The Use of High Strength Geosynthetics in Deep Soil Mixed Levee Foundations

Chicago, Illinois

The construction and design of flood protection embankment levees within coastal areas has become a focal point for infrastructure management. The levees are usually constructed over soils with very poor bearing capacity due to their proximity to flood plains. The foundation soils create issues with long-term settlement, changing the protection height and creating the need to periodically build the levee back to the design height. In order to reduce settlements and the maintenance required to preserve design height protection, a deep foundation is needed for proper long term load transfer. Deep soil mixing (DSM) has become a popular deep foundation solution for just this type of geotechnical issue. Deep soil mixing is a technique used to create cement/soil bonded columns that are utilized as end load bearing elements. The columns are used to bridge the soft foundation soils and create a semi rigid foundation for support of the levee embankment. This solution was recently used by the Corp of Engineers in New Orleans for a protection levee. For this project, a high strength geosynthetic was incorporated into the design and installed over the columns. This paper will outline the considerations necessary for geosynthetic inclusion within deep soil mixed foundations. With the proper use of reinforcement, these applications can become even more efficient in time and cost vs. unreinforced.