STABILITY OF DOCK STRUCTURES FOUNDED ON LIQUEFIABLE SOILS

Document Type : Original Article

Author

Lecturer, Dept. of Irrigation & Hydraulics, Ain Shams University, Cairo, Egypt.

Abstract

During seismic events or wave loadings, the stability of dock and marine structures
founded on liquefiable soils becomes a major concern. In this paper, a liquefaction
assessment for a dock structure founded on liquefiable soils, subjected to different
earthquake excitations, is presented. The liquefaction assessment is based on intensive
cone penetration testing over water. The results of the study indicate that a significant
increase in liquefaction potential occurs with the increase in water depth. The global
stability of the dock structure is assessed using a pseudo-static approach. The study
indicates that a soil treatment or densification zone equivalent to about twice the
width of the slope under the dock is required to avoid the structural collapse during a
major seismic event.

Keywords