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    Flexible Retaining Structures and Cofferdams

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    Rajesh Khadka
    This document discusses flexible retaining structures and cofferdams. It introduces rigid and flexible types of earth retaining structures such as gravity walls, cantilever walls, counterfort walls, cantilever sheet pile walls, and anchored bulkheads. Flexible structures are compared to rigid structures, noting that flexible structures can fail by rotating or bulging, are used temporarily, have negligible self-weight, and rely entirely on passive pressure for stability. Cantilever sheet pile walls, anchored walls, and cofferdams are then outlined as examples of flexible retaining structures.

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    Flexible Retaining Structures and Cofferdams

    Uploaded by

    Rajesh Khadka
    125 views1 page
    This document discusses flexible retaining structures and cofferdams. It introduces rigid and flexible types of earth retaining structures such as gravity walls, cantilever walls, counterfort walls, cantilever sheet pile walls, and anchored bulkheads. Flexible structures are compared to rigid structures, noting that flexible structures can fail by rotating or bulging, are used temporarily, have negligible self-weight, and rely entirely on passive pressure for stability. Cantilever sheet pile walls, anchored walls, and cofferdams are then outlined as examples of flexible retaining structures.

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    mki

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    This document discusses flexible retaining structures and cofferdams. It introduces rigid and flexible types of earth retaining structures such as gravity walls, cantilever walls, counterfort walls, cantilever sheet pile walls, and anchored bulkheads. Flexible structures are compared to rigid structures, noting that flexible structures can fail by rotating or bulging, are used temporarily, have negligible self-weight, and rely entirely on passive pressure for stability. Cantilever sheet pile walls, anchored walls, and cofferdams are then outlined as examples of flexible retaining structures.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    125 views1 page

    Flexible Retaining Structures and Cofferdams

    Uploaded by

    Rajesh Khadka
    This document discusses flexible retaining structures and cofferdams. It introduces rigid and flexible types of earth retaining structures such as gravity walls, cantilever walls, counterfort walls, cantilever sheet pile walls, and anchored bulkheads. Flexible structures are compared to rigid structures, noting that flexible structures can fail by rotating or bulging, are used temporarily, have negligible self-weight, and rely entirely on passive pressure for stability. Cantilever sheet pile walls, anchored walls, and cofferdams are then outlined as examples of flexible retaining structures.

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    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 1

    5.

    0 Flexible Retaining Structures and Cofferdams (@ 4 Marks)


    5.1 Introduction
    Types of Earth Retaining Structures
    (a) Rigid Type: eg. Gravity Walls, Cantilever Walls, Counterfort Walls, etc.
    (b) Flexible Type: eg. Cantilever Sheet Pile Walls, Anchored Bulkheads, etc.
    (c) Reinforced Earth Type: eg. Reinforced earth walls, etc.
    Comparison between Rigid Type and Flexible Type Earth Structures (or Walls)
    S.N. Criteria Rigid Type RW Flexible Type RW
    1 Modes of Failure Assumed to fail by sliding Can also fail by rotating
    or by rotation about the about its base. Anchored
    base bulkhead will fail by rotating
    about the top anchor or by
    bulging (or yielding)
    between the dredge level and
    the anchor.
    2 Nature Rigid Flexible and elastic
    3 Used as Permanent structures Temporary structures
    4 Weight Self –weight is primarily Have negligible weight; not
    considered for its stability considered self-weight for its
    stability
    5 Stability Due to self-weight + Pp Entirely by Pp

    5.2 Cantilever Sheet Pile Wall


    5.3 Anchored Wall
    5.4 Cofferdams

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