Numerical Study of the Behavior of a Fully Encased Stone Column Bearing on a Non-Rigid Layer

2019 ◽  
Author(s):  
Ali N. Al Saadi ◽  
Christopher L. Meehan ◽  
Victor N. Kaliakin
Keyword(s):  
Numerical Study ◽  
Stone Column ◽  
Rigid Layer

scholarly journals Experimental and numerical study of the behavior of a stone column subject to the loading effect

2021 ◽  
Vol 16 (2) ◽  
pp. 105-114
Author(s):  
Haouam Houda ◽  
Messast Salah
Keyword(s):  
Numerical Study ◽  
Soil Improvement ◽  
Reinforced Soil ◽  
Stone Column ◽  
Engineering Structures ◽  
Loading Effect ◽  
Site Survey ◽  
Real Behavior ◽  
Loading Tests ◽  
The Many

Abstract The realization of engineering structures in compressible sites, requires in-depth geotechnical reconnaissance, as well as a study of the mechanical behavior of the soil, in order to adapt suitable soil improvement solutions. This is the case with the Annaba viaduct in Algeria, where it was found during the site survey that the soil is poor and very compressible. The foundations in these soils eventually pose the problem of their low bearing capacity and significant settlement. This, therefore, leads to the choice of reinforcement techniques. Among the many methods of improving soils, we have selected the stone column technique. The object of our article is to study the behavior of these columns, in terms of settlement and, through the loading tests on real site, we have found out that the intermediate columns are stiffer and more confined than the bank columns and the percentage reduction in settlements of these two types is important. Then, this experimental study is validated by the Plaxis 2D software, where the configurations are studied to find the best model that approximates the real behavior of the reinforced soil.

Numerical Study of Effect of Encasement on Stone Column Performance

2010 ◽  
Author(s):  
Majid Khabbazian ◽  
Christopher L. Meehan ◽  
Victor N. Kaliakin
Keyword(s):  
Numerical Study ◽  
Stone Column ◽  
Column Performance

Stone column effectiveness in soils with creep: a numerical study

2016 ◽  
Vol 11 (4) ◽  
pp. 252-269 ◽  
Author(s):  
Brian G. Sexton ◽  
Bryan A. McCabe
Keyword(s):  
Numerical Study ◽  
Stone Column

Failure Process of a Single Stone Column in Soft Soil beneath Rigid Loading: Numerical Study

2020 ◽  
Vol 20 (8) ◽  
pp. 04020130
Author(s):  
Xin Tan ◽  
Minghua Zhao ◽  
Zhengbo Hu ◽  
Longjian Feng
Keyword(s):  
Numerical Study ◽  
Soft Soil ◽  
Failure Process ◽  
Stone Column ◽  
Rigid Loading

Numerical Study of Stone Column Reinforced Composite Foundation of Highway under Static and Seismic Load

2012 ◽  
Vol 602-604 ◽  
pp. 1526-1531
Author(s):  
Min Min Jiang ◽  
Shang Yu Han ◽  
Hong Li
Keyword(s):  
Numerical Study ◽  
Horizontal Displacement ◽  
Calculation Model ◽  
Composite Foundation ◽  
Traffic Load ◽  
Stone Column ◽  
Seismic Load ◽  
Reinforced Composite ◽  
Drainage Effect ◽  
Pile Length

Stone column reinforced composite foundation of highway under static and seismic load is simulated by numerical method. Fist, calculation model was built up, and verified by in situ test. Then the whole construction process of highway stone column reinforced composite foundation is simulated, after 3 years of traffic load, a seismic load was imposed on bottom of the model. Calculation result show that: in construction and run time period, drainage effect of stone column is significant, when pile length reached to 12m, maximum pore pressure in middle of stone column reduced to about 4 kPa, when pile length reached to 10m, effect of pile length on settlement is small; composite foundation has smaller maximum horizontal displacement in stone column; surface and toe of embankment slope is apt to liquefy under seismic load, stone column can eliminate liquefaction potential to a certain extent, especially in composite foundation range.

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