Location
Chicago, Illinois
Date
02 May 2013, 4:00 pm - 6:00 pm
Abstract
Liquefaction remediation solutions often encompass high prevailing costs particularly in heterogeneous soil profiles. Common liquefaction control measures consist of deep foundations, soil mixing, and stone columns. Rammed Aggregate Pier methods have been used in the past two decades to support structures in cohesive and cohesionless soil profiles and control foundation settlements to building tolerances. These methods have recently been adapted to treat liquefiable soil profiles by improving the soil through densification, drainage, and shear stress redistribution. This paper focuses on a case history on Daniel Island, SC where a new variation of RAP methods, called the Rammed Compaction Point™ (RCP) method, was utilized to treat a layer of liquefiable sand that was overlain by a non-liquefiable layer of clay. The paper presents the results of pre- and post-improvement CPT tip resistances and design methods used to calculate liquefaction susceptibility and post-liquefaction settlement. This paper is of particular significance because it shows how a cost-effective treatment method is used to treat difficult soil conditions at liquefiable sites.
Department(s)
Civil, Architectural and Environmental Engineering
Meeting Name
7th Conference of the International Conference on Case Histories in Geotechnical Engineering
Publisher
Missouri University of Science and Technology
Document Version
Final Version
Rights
© 2013 Missouri University of Science and Technology, All rights reserved.
Creative Commons Licensing
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Document Type
Article - Conference proceedings
File Type
text
Language
English
Recommended Citation
Metcalfe, Brian; Wissmann, Kord; and Zur, Kenneth, "Innovative Ground Improvement for Liquefaction Control Near Charleston, South Carolina" (2013). International Conference on Case Histories in Geotechnical Engineering. 21.
https://scholarsmine.mst.edu/icchge/7icchge/session_06/21
Innovative Ground Improvement for Liquefaction Control Near Charleston, South Carolina
Chicago, Illinois
Liquefaction remediation solutions often encompass high prevailing costs particularly in heterogeneous soil profiles. Common liquefaction control measures consist of deep foundations, soil mixing, and stone columns. Rammed Aggregate Pier methods have been used in the past two decades to support structures in cohesive and cohesionless soil profiles and control foundation settlements to building tolerances. These methods have recently been adapted to treat liquefiable soil profiles by improving the soil through densification, drainage, and shear stress redistribution. This paper focuses on a case history on Daniel Island, SC where a new variation of RAP methods, called the Rammed Compaction Point™ (RCP) method, was utilized to treat a layer of liquefiable sand that was overlain by a non-liquefiable layer of clay. The paper presents the results of pre- and post-improvement CPT tip resistances and design methods used to calculate liquefaction susceptibility and post-liquefaction settlement. This paper is of particular significance because it shows how a cost-effective treatment method is used to treat difficult soil conditions at liquefiable sites.
