Numerical simulation and sensitivity analyses of full-scale test embankment with reinforced lightweight geomaterials on soft Bangkok clay

Tanchaisawat, T.; Bergado, Dennes T.; Voottipruex, Panich

doi:10.1016/j.geotexmem.2008.05.005

Cited by 40 publications

(12 citation statements)

References 45 publications

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“…Several studies on PVDs such as the investigation of affecting factors behaviour [19], the analysis on the effect of vertical drains in plain strain condition [16], and the characterisation of a smear zone around vertical drains [20] have been reported. Smear effects are among the factors that affect the performance of embankment treated with PVD which reduces the lateral permeability of the ground [21]. Research on smear effects has become increasingly intense since it was introduced by Barron [18], who found the presence of smear zone greatly influenced horizontal consolidation.…”

Section: Literature Reviewmentioning

confidence: 99%

Comparative Analysis of Settlement and Pore Water Pressure of Road Embankment on Yan soft soil Treated with PVDs

2019

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The application of prefabricated vertical drains (PVDs) in the road embankment construction has been successfully performed in many projects throughout the country. The simulation of finite element method (FEM) can assist engineers in modelling very complex structures and foundations. This paper presents a plane–strain numerical analysis that was performed to verify the effectiveness of the model embankment stabilised with PVD using Plaxis 2D version 8. This study employed the smear effect of permeability ratio (kr) of 3 in the PVD modelling. The data of settlement and pore water pressure in the left and right sides of road embankment were monitored for 177 days, then the data were collected and compared by a numerical simulation. The coefficient of determination (R2) was used to assess the performance of the comparative analysis. The results of numerical simulation on settlement and pore water pressure obtained a coefficient of determination of greater than 0.9 which has reached a good agreement with those of the field measurement. On other the hand, there was no significant difference in the performance between both sides of the embankment. The smear effect parameter (kr = 3) is recommended for PVD designs and can provide accurate FEM prediction.

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Section: Literature Reviewmentioning

confidence: 99%

Comparative Analysis of Settlement and Pore Water Pressure of Road Embankment on Yan soft soil Treated with PVDs

2019

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“…The 1 st -2 nd sand, 2 nd stiff clay and hard clay layers were modelled with Mohr-Coulomb model. The soil properties used in the analysis are mostly determined from comparing local investigated data with comprehensive in situ tests of MRT projects [17] and previous laboratory tests from Asian Institute of Technology (AIT) [18]- [20]. Table 2 summarizes the material parameters used in the analysis.…”

Section: Constitutive Models and Parametersmentioning

confidence: 99%

3-D Numerical Analysis of Consolidation Effect on Piled Raft Foundation in Bangkok Subsoil Condition

Watcharasawe¹,

Kitiyodom²,

Jongpradist³

2017

Geomate

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This study focused on the investigation of influencing factors on behaviour of piled raft foundation in Bangkok subsoil. To evaluate the possibility of implementing this system in Bangkok subsoil condition, this research performed the consolidation analysis of piled raft foundation systems for low-rise (8-storey) and high-rise (25-storey) buildings with basement levels in clay soil, using coupled three-dimensional (3D) mechanical and hydraulic numerical model. The soils are modelled with Hardening Soil model and Mohr-Coulomb model. Evaluations of piled raft foundation, i.e., the load sharing ratio of piles, settlement behaviours in the foundation system are performed. The parametric study on the effect of raft depth, and load carried by piles of piled raft was done. The consolidation had a strong influence on the load carried by piles of the piled raft foundation in Bangkok. The load shared by piles can increase by up to 12% and 6% for low rise and high-rise buildings, respectively due to the consolidation effect. Therefore, the design of the piled raft foundation system in Bangkok subsoil essentially consider the consolidation effect.

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“…The finite element method (FEM)-based numerical approach is often used to simulate the laboratory. Based on FEM, Tanchaisawat et al [13] investigated the reinforced behavior of geogrids in soft clay, and Li et al [14] studied the viscous behavior of geogrid-reinforced sand, providing satisfactory prediction with the test results. Recently, a strength reduction method based on FEM was developed.…”

Section: Introductionmentioning

confidence: 99%

Application of FBG Sensing Technology in Stability Analysis of Geogrid-Reinforced Slope

Sun

Ping

et al. 2017

Sensors

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By installing FBG sensors on the geogrids, smart geogrids can both reinforce and monitor the stability for geogrid-reinforced slopes. In this paper, a geogrid-reinforced sand slope model test is conducted in the laboratory and fiber Bragg grating (FBG) sensing technology is used to measure the strain distribution of the geogrid. Based on the model test, the performance of the reinforced soil slope is simulated by finite element software Midas-GTS, and the stability of the reinforced soil slope is analyzed by strength reduction method. The relationship between the geogrid strain and the factor of safety is set up. The results indicate that the measured strain and calculated results agree very well. The geogrid strain measured by FBG sensor can be applied to evaluate the stability of geogrid-reinforced sand slopes.

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Numerical simulation and sensitivity analyses of full-scale test embankment with reinforced lightweight geomaterials on soft Bangkok clay

Cited by 40 publications

References 45 publications

Comparative Analysis of Settlement and Pore Water Pressure of Road Embankment on Yan soft soil Treated with PVDs

Comparative Analysis of Settlement and Pore Water Pressure of Road Embankment on Yan soft soil Treated with PVDs

3-D Numerical Analysis of Consolidation Effect on Piled Raft Foundation in Bangkok Subsoil Condition

Application of FBG Sensing Technology in Stability Analysis of Geogrid-Reinforced Slope

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