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Performance-Based Seismic Assessment of Slope Systems Read chapter Read first chapter

2022 | OriginalPaper | Chapter

Three-Dimensional Numerical Simulations of Granular Column Improved Layered Liquefiable Soil Deposit

Authors : Zhao Wang, Rui Wang, Jian-Min Zhang

Published in: Proceedings of the 4th International Conference on Performance Based Design in Earthquake Geotechnical Engineering (Beijing 2022)

Publisher: Springer International Publishing

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Abstract

This paper presents numerical analysis on the mitigation effect of granular columns for layered liquefiable soil deposit. 3D simulations of the centrifuge shaking table tests conducted at the University of Colorado Boulder’s 400 g-ton centrifuge facility are using a plasticity constitutive model for large post-liquefaction deformation of sand (CycLiq), via the FLAC3D finite difference code. The simulations investigate the response of a layered liquefiable soil deposit improved by granular columns, under horizontal Kobe earthquake motion input. The results suggest that the constitutive model and FLAC3D simulation method can be used to successfully capture the seismic response of granular columns improved liquefiable ground. Granular columns can significantly enhance drainage, which suppresses the build-up of excess pore pressure and increases the rate of excess pore pressure dissipation. Meanwhile, it also reinforces the ground by reducing the horizontal and vertical displacements.

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previous chapter Framework and Demonstration of Constitutive Model Calibration for Liquefaction Simulation of Densified Sand
next chapter Fundamental Study on Laboratory Test Method for Setting Parameters of Effective Stress Analysis
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Metadata
Title
Three-Dimensional Numerical Simulations of Granular Column Improved Layered Liquefiable Soil Deposit
Authors
Zhao Wang
Rui Wang
Jian-Min Zhang
Copyright Year
2022
Book
Proceedings of the 4th International Conference on Performance Based Design in Earthquake Geotechnical Engineering (Beijing 2022)

Print ISBN: 978-3-031-11897-5

Electronic ISBN: 978-3-031-11898-2

Copyright Year: 2022

DOI
https://doi.org/10.1007/978-3-031-11898-2_156