Stability of waterfront retaining wall subjected to pseudodynamic earthquake forces

Deepankar Choudhury, Syed Mohd Ahmad

    Research output: Contribution to journalArticlepeer-review

    Abstract

    This technical note pertains to the study of a waterfront retaining wall, retaining a partially submerged backfill, subjected to seismic forces. The pseudodynamic approach, which considers the effect of primary and shear wave propagation in the backfill soil and wall, is adopted for calculation of the seismic earth pressure considering wall inertia. The point of application of the seismic active earth pressure is also affected by seismicity. Hydrodynamic forces are considered in the analysis. It is observed that when the horizontal seismic acceleration coefficient is increased from 0 to 0.3, there is a 65% decrease in the factor of safety of the retaining wall in sliding mode. To investigate the effects of different parameters on design, a parametric study is done. It is observed that with increase in the value of φ from 25 to 35°, there is an increase in the factor of safety in the sliding mode by 50%. Comparison with a previous study suggests that the present pseudodynamic approach gives less conservative results than the previous pseudostatic analysis leading to an economic design of waterfront retaining walls. © 2008 ASCE.
    Original languageEnglish
    Pages (from-to)252-260
    Number of pages8
    JournalJournal of Waterway, Port, Coastal and Ocean Engineering
    Volume134
    Issue number4
    DOIs
    Publication statusPublished - Jul 2008

    Keywords

    • Earth pressure
    • Earthquakes.
    • Hydrodynamics
    • Retaining walls
    • Seismic effects
    • Waterfront structures

    Fingerprint

    Dive into the research topics of 'Stability of waterfront retaining wall subjected to pseudodynamic earthquake forces'. Together they form a unique fingerprint.

    Cite this