Numerical Analysis of Liquefaction Susceptibility of Reinforced Soil with Stone Columns

2017 ◽  
pp. 57-66
Author(s):  
Zeineb Ben Salem ◽  
Wissem Frikha ◽  
Mounir Bouassida
Keyword(s):  
Numerical Analysis ◽  
Reinforced Soil ◽  
Stone Columns ◽  
Liquefaction Susceptibility

Effects of Densification and Stiffening on Liquefaction Risk of Reinforced Soil by Stone Columns

2017 ◽  
Vol 143 (10) ◽  
pp. 06017014 ◽  
Author(s):  
Zeineb Ben Salem ◽  
Wissem Frikha ◽  
Mounir Bouassida
Keyword(s):  
Reinforced Soil ◽  
Stone Columns

Laboratory and numerical analysis of geogrid encased stone columns

Measurement ◽  
2021 ◽  
Vol 169 ◽  
pp. 108369
Author(s):  
Fang Xu ◽  
Hossein Moayedi ◽  
Loke Kok Foong ◽  
Mohamad Jamali Moghadam ◽  
Milad Zangeneh
Keyword(s):  
Numerical Analysis ◽  
Stone Columns

scholarly journals Numerical Analysis of Soil Improvement for a Foundation of a Factory Using Stone Columns Made of Different Types of Coarse-grained Materials

2019 ◽  
Author(s):  
Jakub Stacho ◽  
Monika Sulovska
Keyword(s):  
Numerical Analysis ◽  
Accurate Determination ◽  
Soil Improvement ◽  
Coarse Grained ◽  
Stone Columns ◽  
Modified Method ◽  
Geological Conditions ◽  
Deformation Properties ◽  
Final Settlement ◽  
The Impact

Stone columns made of coarse-grained materials and crushed stone are one of the most-used technologies for soil improvement all over the world. Stone columns improve the strength and deformation properties of subsoil and reduce the time required for the consolidation of fine-grained soils. The impact of the improvement depends on the properties of the original subsoil as well as the properties of the coarse-grained materials used for the stone columns. The article deals with the effects of the properties of coarse-grained materials for stone columns on the settlement and consolidation times of improved subsoil for the foundation of a factory. Numerical modeling as a 2D task was performed using Plaxis geotechnical software. The numerical analysis included two methods of modeling stone columns in a plane strain model, i.e., one method often used by practical engineers in the region of Slovakia, and one modified method, which allowed for a more accurate determination of the final settlement and consolidation time. The method modeled stone columns as continuous walls, and the compaction of the soil between the stone columns was taken into account. The results showed that the type of coarse-grained material can significantly affect the final settlement and time of consolidation. Stone columns made of quarry stone were suitable in the given geological conditions regardless of the design of the mesh, while stone columns made of pebble gravel were suitable only with a mesh of 1.5 x 1.5 m.

A New Method for Numerical Analysis of Reinforced Soil

2012 ◽  
Vol 40 (4) ◽  
pp. 104305 ◽  
Author(s):  
Yu-xin Jie ◽  
Bin Zhang ◽  
Guang-xin Li
Keyword(s):  
Numerical Analysis ◽  
Reinforced Soil ◽  
New Method

Foundation Numerical Analysis on Soft Soil Reinforced with Stone Columns

2011 ◽  
Vol 94-96 ◽  
pp. 190-195 ◽  
Author(s):  
Shu Li Wang ◽  
Man Gen Mu ◽  
Jing Yu Dai ◽  
Xiao Huan Hu
Keyword(s):  
Numerical Analysis ◽  
Bearing Capacity ◽  
Design Method ◽  
Soft Soil ◽  
Volumetric Strain ◽  
Vertical Displacement ◽  
Area Ratio ◽  
Stone Columns ◽  
Mean Stress ◽  
Maximum Shear Strain

A parametric study of an foundation on soft soils reinforced with stone columns is performed using Phase2D. The real foundation is modeled and its bearing capacity is decided by the columns and their surrounding soft soil. The following parameters are analysed: the replacement area ratio, the deformability, mean stress, absolute horizontal (vertical) displacement, volumetric strain, maximum shear strain of the foundation. Based on the results of this study, a new design method is proposed: for decreasing the settlement and satisfying bearing capacity, increasing the replacement area ratio is good idea.

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