Finite element modelling of pull-out tests with load and strain measurements

Yogarajah, I.; Yeo, K C

doi:10.1016/0266-1144(94)90056-6

Cited by 33 publications

(8 citation statements)

References 2 publications

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“…Also, a simulation was done for Test B using a constant elastic modulus for the entire geogrid. The results show that the load distribution agrees with the measured data but the strain distribution was always higher than that of the measured data (Yogarajah and Yeo, 1993).…”

Section: Recent Studiessupporting

confidence: 78%

Numerical modeling of soil-geosynthetic interaction

Pike¹

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Geosynthetics are being used for a wide range of civil engineering applications such as reinforced earth fills, soft foundations etc. The use of geosynthetics can greatly increase the efficiency while reducing the cost of the project. The objective of this research is to study the pullout resistance of the geosynthetic and the effect of friction on the soil-geosynthetic interface. Finite element analysis was performed on different sizes of pullout box to match load-displacement results with that found during laboratory experiments. Friction coefficient was selected by trial and error method to match the load-displacement curves calculated from the laboratory experiments to that found from the finite element analysis. Models were made using three different soils; sand, silt, and clay at 0%, 10%, and 15% moisture content under normal pressures of 5 psi, 10 psi, and 15 psi. ACKNOWLEDGEMENT There are several people that I would really like to thank for the successful completion of this thesis. First and foremost I would like to thank the advisor and committee chairman, Dr. Siriwardane. His guidance and support made the completion of this research possible. I would like to thank Dr. Udaya Halabe and Dr. Roger Viadero for reviewing my thesis and participating on my examination committee. I would also like to give a special thanks to Raj Kumar Gondle for his help and guidance throughout the preparation of this thesis. Finally, I would like to thank my friends and family for their support and patience. iii TABLE OF CONTENTS ABSTRACT ……………………………………………………………………………. ii ACKNOWLEDGEMENT ……………………………………………………………. iii TABLE OF CONTENTS …………………………………………………………….. iv LIST OF TABLES ……………………………………………………………………. vi LIST OF FIGURES …………………………………………………………………... vii CHAPTER 1: INTRODUCTION ……………………………………………………. 1

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Section: Recent Studiessupporting

confidence: 78%

Numerical modeling of soil-geosynthetic interaction

Pike¹

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“…Due to significance and great possibilities offered by advanced numerical simulations, it is not surprising that a considerable number of such analyses have so far been published. Numerous studies in which pullout test modelling by complex numerical analyses is proposed, are in most cases conducted using the finite element method and the finite difference method in form of 2D simulations [21,32,37,40,64,77,[79][80][81][82][83][84][85]. Principal details given in some of these studies are commented on in the following section.…”

Section: Numerical Modelling Of Pullout Testmentioning

confidence: 99%

Numerical investigations of interaction between geogrid/wire fabric reinforcement and cohesionless fill in pull-out test

2020

JCE

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“…Continuous mechanical methods, including the finite element method (FEM) and the finite difference method (FDM), have been used as numerical simulation tools to study the interaction between geogrids and soil [7][8][9][10][11][12]. However, the geometric structure of the geogrid is usually oversimplified, expressed as a truss structure in two-dimensional simulations and as a shell element in three-dimensional simulations.…”

Section: Introductionmentioning

confidence: 99%

DEM-FDM Coupled Numerical Study on the Reinforcement of Biaxial and Triaxial Geogrid Using Pullout Test

Jianjun

Chen

et al. 2021

Applied Sciences

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The key to modeling the interlocking of geogrid-reinforced ballast is considering both the continuous deformation characteristics of the geogrid and the discontinuity of the ballast particles. For this purpose, pullout tests using biaxial and triaxial geogrids were simulated using the coupled discrete element method (DEM) and finite difference method (FDM). In this coupled model, two real-shaped geogrid models with square and triangular apertures were established using the solid element in FLAC3D. Meanwhile, simplified shaped clumps were used to represent the ballast using PFC3D. The calibration test simulation showed that the accurately formed geogrid model can reproduce the deformation and strength characteristics of a geogrid. The pullout simulation results show that the DEM-FDM method can well predict the relationship between pullout force and displacement, which is more accurate than the DEM method. For ballast particles of 40 mm in size, both the experiment and simulation results showed that the triaxial geogrid of 75 mm is better than the 65-mm biaxial geogrid . In addition, the DEM-FDM method can study the interaction mechanism between the particles and the geogrid from a microscopic view, and also reveal the similar deformation behavior of the geogrid in the pullout process. Therefore, the DEM-FDM coupled method can not only investigate the interlocking mechanism between the ballast and particles but can also provide a great method for evaluating the performance of different types of geogrids.

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Finite element modelling of pull-out tests with load and strain measurements

Cited by 33 publications

References 2 publications

Numerical modeling of soil-geosynthetic interaction

Numerical modeling of soil-geosynthetic interaction

Numerical investigations of interaction between geogrid/wire fabric reinforcement and cohesionless fill in pull-out test

DEM-FDM Coupled Numerical Study on the Reinforcement of Biaxial and Triaxial Geogrid Using Pullout Test

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