IJMTES – PARAMETRIC STUDY OF BACKFILL ON BEHAVIOUR OF QUAY WALL UNDER SEISMIC FORCE

Journal Title : International Journal of Modern Trends in Engineering and Science

Paper Title : PARAMETRIC STUDY OF BACK FILL ON BEHAVIOUR OF QUAY WALL UNDER SEISMIC FORCE

Author’s Name : Apurvkumar Prajapati | Prof Dr S P Daveunnamed

Volume 04 Issue 04 2017

ISSN no :  2348-3121

Page no: 79-83

Abstract – The performance of quay walls is found to be highly dependent on liquefaction. Liquefaction is a major problem which occurs in loosely packed cohesionless saturated soils as backfill of quay wall. The intensity and severity of liquefaction are mainly dependent upon relative density, degree of saturation and frequency of shaking of the backfill soil. This paper discusses the effects of excess pore water pressure developed in the backfill sand on the seismic performance of quay walls based on the shake table tests. The shake table tests are conducted to evaluate the response of quay wall with backfill having different combinations of relative density and degree of saturation. The model was calibrated to represent the experimental observations. Each shake table test is performed for a fixed frequency of 10Hz for the duration of 13sec. with the varying combinations of relative density (35% and 40%) and degree of saturation (85%, 90%, 95% and 100%). The corresponding pore water pressure and acceleration developed are measured by piezometer and accelerometer respectively. It is found that the seismic performance of the quay wall reduces with increasing the degree of saturation and decreasing the relative density.

Key words— Liquefaction, Shake table, Quay wall, Relative density, Degree of saturation

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