Spatial variability effect of internal friction angle on the post-failure behavior of landslides using a random and non-Newtonian fluid based SPH method
This study proposed a random Smoothed Particle Hydrodynamics method for analyzing the post-failure behavior of landslides, which is based on the Karhunen–Loève (K-L) expansion, the non-Newtonian fluid model, and the OpenMP parallel framework. Then, the applicability of this method was validated by c...
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doaj-e8f82fcefacb425ca77962b51d17c98a2020-11-25T03:40:34ZengElsevierGeoscience Frontiers1674-98712020-07-0111411071121Spatial variability effect of internal friction angle on the post-failure behavior of landslides using a random and non-Newtonian fluid based SPH methodWeijie Zhang0Jian Ji1Yufeng Gao2Xiaoyu Li3Chunshun Zhang4Key Lab of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, 210098, ChinaKey Lab of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, 210098, China; Corresponding author.Key Lab of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, 210098, ChinaKey Lab of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing, 210098, ChinaDepartment of Civil Engineering, Monash University, Clayton, 3168, AustraliaThis study proposed a random Smoothed Particle Hydrodynamics method for analyzing the post-failure behavior of landslides, which is based on the Karhunen–Loève (K-L) expansion, the non-Newtonian fluid model, and the OpenMP parallel framework. Then, the applicability of this method was validated by comparing the generated random field with theoretical result and by simulating the post-failure process of an actual landslide. Thereafter, an illustrative landslide example was created and simulated to obtain the spatial variability effect of internal friction angle on the post-failure behavior of landslides under different coefficients of variation (COVs) and correlation lengths (CLs). As a conclusion, the reinforcement with materials of a larger friction angle can reduce the runout distance and impact the force of a landslide. As the increase of COV, the distribution range of influence zones also increases, which indicates that the deviation of influence zones becomes large. In addition, the correlation length in Monte Carlo simulations should not be too small, otherwise the variation range of influence zones will be underestimated.http://www.sciencedirect.com/science/article/pii/S1674987120300451LandslidesSpatial variabilityRandom fieldSmoothed particle hydrodynamicsMonte Carlo simulationPost-failure behavior |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Weijie Zhang Jian Ji Yufeng Gao Xiaoyu Li Chunshun Zhang |
spellingShingle |
Weijie Zhang Jian Ji Yufeng Gao Xiaoyu Li Chunshun Zhang Spatial variability effect of internal friction angle on the post-failure behavior of landslides using a random and non-Newtonian fluid based SPH method Geoscience Frontiers Landslides Spatial variability Random field Smoothed particle hydrodynamics Monte Carlo simulation Post-failure behavior |
author_facet |
Weijie Zhang Jian Ji Yufeng Gao Xiaoyu Li Chunshun Zhang |
author_sort |
Weijie Zhang |
title |
Spatial variability effect of internal friction angle on the post-failure behavior of landslides using a random and non-Newtonian fluid based SPH method |
title_short |
Spatial variability effect of internal friction angle on the post-failure behavior of landslides using a random and non-Newtonian fluid based SPH method |
title_full |
Spatial variability effect of internal friction angle on the post-failure behavior of landslides using a random and non-Newtonian fluid based SPH method |
title_fullStr |
Spatial variability effect of internal friction angle on the post-failure behavior of landslides using a random and non-Newtonian fluid based SPH method |
title_full_unstemmed |
Spatial variability effect of internal friction angle on the post-failure behavior of landslides using a random and non-Newtonian fluid based SPH method |
title_sort |
spatial variability effect of internal friction angle on the post-failure behavior of landslides using a random and non-newtonian fluid based sph method |
publisher |
Elsevier |
series |
Geoscience Frontiers |
issn |
1674-9871 |
publishDate |
2020-07-01 |
description |
This study proposed a random Smoothed Particle Hydrodynamics method for analyzing the post-failure behavior of landslides, which is based on the Karhunen–Loève (K-L) expansion, the non-Newtonian fluid model, and the OpenMP parallel framework. Then, the applicability of this method was validated by comparing the generated random field with theoretical result and by simulating the post-failure process of an actual landslide. Thereafter, an illustrative landslide example was created and simulated to obtain the spatial variability effect of internal friction angle on the post-failure behavior of landslides under different coefficients of variation (COVs) and correlation lengths (CLs). As a conclusion, the reinforcement with materials of a larger friction angle can reduce the runout distance and impact the force of a landslide. As the increase of COV, the distribution range of influence zones also increases, which indicates that the deviation of influence zones becomes large. In addition, the correlation length in Monte Carlo simulations should not be too small, otherwise the variation range of influence zones will be underestimated. |
topic |
Landslides Spatial variability Random field Smoothed particle hydrodynamics Monte Carlo simulation Post-failure behavior |
url |
http://www.sciencedirect.com/science/article/pii/S1674987120300451 |
work_keys_str_mv |
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