Interaction of Sheet Pile Quay Walls
and the Liquefied Backfill Soils

 

S.M. Mir Mohammad Hosseini

Associate Professor of Amirkabir University of Technology, Tehran, Iran
e-mail: smmirhos@aku.ac.ir

and

A. Mosalmanzadeh

M.Sc. in Soil Mech. & Found. Eng., Amirkabir University of Technology

ABSTRACT

The liquefaction phenomenon has been observed in many sites especially those having loose sands, and has caused severe damages to many structures during heavy earthquakes. One of the most vulnerable structures during earthquake vibrations is the quay walls designed to resist against the earth pressures at the seaside or river sides behind which the soil is usually loose and saturated. These retaining walls are usually made in two types; the gravity type and the flexible type (usually from steel sheet piles). In this paper, the results of studying on the second type has been presented. In this study, the behavior of steel sheet piles against the liquefied soils has been modeled using the Plaxis software. Different parameters affecting the soil-sheet pile interaction such as soil angle of internal friction, the fixity of the pile in the dense bed soils, the peak ground acceleration, the duration of earthquake loadings, the thickness of the sheet pile, the water level against the sheet pile, the distance between the tie rods supporting the pile, etc. have been studied and investigated in this research.

Keywords: Quay walls, steel sheet pile, liquefaction, hydrodynamic pressure, numerical analysis, earth pressure.

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