STP1129: Deep Foundation Elements Installed by Slurry Wall Techniques

    Johnson, EG
    PrincipalSenior Engineers, Haley & Aldrich, Inc., Geotechnical Engineers and Environmental Consultants, Cambridge, MA

    Johnson, KE
    PrincipalSenior Engineers, Haley & Aldrich, Inc., Geotechnical Engineers and Environmental Consultants, Cambridge, MA

    Erikson, CM
    PrincipalSenior Engineers, Haley & Aldrich, Inc., Geotechnical Engineers and Environmental Consultants, Cambridge, MA

    Pages: 18    Published: Jan 1992


    Abstract

    Deep foundation units, installed using slurry wall techniques, are generally referred to as Barrettes or Load Bearing Elements (LBEs). This paper reviews examples and applications of this foundation type, and describes two case studies in which these units were utilized in Boston.

    Current design issues and construction installation details are presented. The design discussion focuses on the selection of foundation type and load transfer into the bearing stratum. Issues related to construction include excavation equipment and stabilization, bottom cleanup, installation of reinforcement, tremie concrete placement, and quality control during installation. for both case studies, the LBEs were installed for projects constructed by the “up/down” method, which is described in the paper. Although there are some unique advantages when used with this construction method, the selection of LBEs should be considered for conventional construction as well.

    Keywords:

    deep foundations, load bearing elements, barrettes, up/down construction, slurry foundations


    Paper ID: STP19735S

    Committee/Subcommittee: D18.20

    DOI: 10.1520/STP19735S


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