NUMERICAL INVESTIGATION OF THE EFFECTS OF THE VERTICAL COMPONENT OF GROUND MOTION ON SEISMIC BEHAVIOUR OF SOIL SLOPES

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Moghaddam Firooze

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Seminar Paper

Paper Information

Seminar: NATIONAL CONGRESS ON CIVIL ENGINEERING
Year:2016 | Issue:9

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Title

NUMERICAL INVESTIGATION OF THE EFFECTS OF THE VERTICAL COMPONENT OF GROUND MOTION ON SEISMIC BEHAVIOUR OF SOIL SLOPES

Author(s)

Moghaddam Firooze

Keywords

VERTICAL EXCITATION

SLOPE STABILITY

FINITE ELEMENT ANALYSIS

EMBANKMENT

Abstract

THIS PAPER INVESTIGATES THE EFFECT OF VERTICAL COMPONENT OF EARTHQUAKES ON STABILITY OF SLOPES USING FE ANALYSIS. THE ANALYSES ARE CONDUCTED WITH THE IMPERIAL COLLEGE FINITE ELEMENT PROGRAM (ICFEP), USING THE MOHR-COULOMB FAILURE CRITERION, AND THE GENERALIZED-DECAY HYPERBOLIC MODEL ACCOUNTING FOR ELASTIC NONLINEARITY IN SMALL STRAIN RANGE. THE MODELS CONSIST OF SLOPES OF DIFFERENT GEOMETRY CONSTRUCTED ON DEEP SATURATED COHESIVE GRANULAR BEDROCK. THESE SLOPES ARE SUBJECTED TO MONOTONIC, HARMONIC, AND SEISMIC EXCITATIONS. THE RESPONSE OF MODELS TO THESE EXCITATIONS IS PRESENTED IN TERMS OF ACCUMULATED DEFORMATIONS, AND PLASTIC STRAINS. THESE RESULTS INDICATE THAT THE INCLUSION OF VERTICAL COMPONENT LEADS TO AN INCREASE IN PLASTIC DEFORMATION. THIS IS IN PARTICULAR MARKED FOR STEEP MODELS WHERE A COMPLETE SLOPE FAILURE DEVELOPS AS OPPOSED TO THE COMPARATIVELY GENTLE SLOPES WITH LOCALIZED PLASTIC ZONES. THE ANALYSES SUGGEST THAT IGNORING THE VERTICAL COMPONENT OF EARTHQUAKES IN SEISMIC STABILITY ANALYSIS CAN RESULT IN UNDERESTIMATION OF THE INDUCED DEFORMATIONS, AND CAN LEAD TO AN UNSAFE DESIGN. THIS CAN BE MORE SIGNIFICANT IN THE CASE OF STEEP SLOPES.

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APA: Copy

Moghaddam, Firooze. (2016). NUMERICAL INVESTIGATION OF THE EFFECTS OF THE VERTICAL COMPONENT OF GROUND MOTION ON SEISMIC BEHAVIOUR OF SOIL SLOPES. NATIONAL CONGRESS ON CIVIL ENGINEERING. SID. https://sid.ir/paper/943433/en

Vancouver: Copy

Moghaddam Firooze. NUMERICAL INVESTIGATION OF THE EFFECTS OF THE VERTICAL COMPONENT OF GROUND MOTION ON SEISMIC BEHAVIOUR OF SOIL SLOPES. 2016. Available from: https://sid.ir/paper/943433/en

IEEE: Copy

Firooze Moghaddam, “NUMERICAL INVESTIGATION OF THE EFFECTS OF THE VERTICAL COMPONENT OF GROUND MOTION ON SEISMIC BEHAVIOUR OF SOIL SLOPES,” presented at the NATIONAL CONGRESS ON CIVIL ENGINEERING. 2016, [Online]. Available: https://sid.ir/paper/943433/en

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