scholarly journals Powerful Software to Simulate Soil Consolidation Problems with Prefabricated Vertical Drains

Water ◽  
2018 ◽  
Vol 10 (3) ◽  
pp. 242 ◽  
Author(s):  
Gonzalo García-Ros ◽  
Iván Alhama ◽  
Manuel Cánovas
Keyword(s):  
Soil Consolidation ◽  
Prefabricated Vertical Drains ◽  
Vertical Drains

scholarly journals An educational software for teaching soil consolidation

2017 ◽  
Author(s):  
Gonzalo García Ros ◽  
Manuel Cánovas Vidal ◽  
Juan Francisco Sánchez Pérez ◽  
Iván Alhama Manteca
Keyword(s):  
Educational Software ◽  
Low Cost ◽  
Surface Settlement ◽  
Excess Pore Pressure ◽  
Soil Consolidation ◽  
Depth Of Penetration ◽  
Consolidation Process ◽  
Prefabricated Vertical Drains ◽  
Vertical Drains ◽  
Graphical Environment

The educational tool SICOMED_3D has been created to simulate problems of soil consolidation by prefabricated vertical drains. Thanks to its nice interface of windows, the introduction of data is very fast and easy for the students, while providing users with simple handling and powerful calculations. Its graphical environment allows to get representations of the excess pore pressure, local settlements and total surface settlement. SICOMED_3D can also generate an animation that recreates the evolution of the surface settlement during the consolidation process. The software presents, like commercial softwares, the most common options (e.g., save and open cases files, save animations and representations, etc.). Although the program is created to be used in several fields, among others as an engineering or research tool, the main use of interest for this work is for educational purposes. Another important application is as low-cost laboratory practices, as students can experiment by modifying the soil properties, including the depth of penetration of the vertical drain, in a quick, simple and intuitive way.

Radial consolidation modelling incorporating the effect of a smear zone for a multilayer soil with downdrag caused by mandrel action

2010 ◽  
Vol 47 (9) ◽  
pp. 1024-1035 ◽  
Author(s):  
Cholachat Rujikiatkamjorn ◽  
Buddhima Indraratna
Keyword(s):  
Lower Layer ◽  
Soil Layer ◽  
Soil Consolidation ◽  
Soil Permeability ◽  
Soil System ◽  
Prefabricated Vertical Drains ◽  
Vertical Drains ◽  
Design Procedures ◽  
Surcharge Preloading ◽  
Time Required

A system of prefabricated vertical drains with surcharge preloading is an effective method for promoting radial drainage and accelerated soil consolidation. A piecewise technique is employed to analyse the radial consolidation in a multilayer soil system to include (i) the effect of soil downdrag and (ii) a smear zone having linearly varying soil permeability. The effect of soil dragged down from the upper soil layer into the lower layer has been analysed in terms of the time required for consolidation. It can be seen that the consolidation of the multilayer soil depends on smear zone characteristics, the permeability ratio between upper and lower soil layers, penetration depth, and drain spacing. Design procedures are described with the help of an example.

scholarly journals Analysis of Soft Soil Consolidation with the Application of Prefabricated Vertical Drains with Preloading Method Using Fem / Analiza Konsolidacji Słabych Gruntów Przy Uzyciu Metody Elementów Skonczonych

2011 ◽  
Vol 57 (1) ◽  
pp. 17-25 ◽  
Author(s):  
K. Binder
Keyword(s):  
Finite Element Method ◽  
Soft Soil ◽  
Two Dimensional ◽  
Soil Consolidation ◽  
Dimensional Solution ◽  
Prefabricated Vertical Drains ◽  
Vertical Drains ◽  
One Dimensional ◽  
Preloading Method ◽  
Consolidation Time

Abstract The article presents the application of finite element method for estimating settlements of road embankments founded on the soil reinforced with vertical drains and preloading method. The idea of the method was the transition from the solution of one-dimensional consolidation proposed for two-dimensional solution, while maintaining the same consolidation time and comparison with results obtained from measurements settlements of road embankment which is a part of planned Gdansk Southern Ring Road near Przejazdowo site.

Influence of electro-osmosis activation time on vacuum electro-osmosis consolidation of a dredged slurry

2018 ◽  
Vol 55 (1) ◽  
pp. 147-153 ◽  
Author(s):  
Jun Wang ◽  
Hongtao Fu ◽  
Feiyu Liu ◽  
Yuanqiang Cai ◽  
Jie Zhou
Keyword(s):  
Shear Strength ◽  
Ground Improvement ◽  
Strength Distribution ◽  
Soil Consolidation ◽  
Activation Time ◽  
Vacuum Preloading ◽  
Prefabricated Vertical Drains ◽  
Vertical Drains ◽  
Electro Osmosis ◽  
Study Laboratory

Combining vacuum preloading with electro-osmosis of a dredged slurry is a significantly effective technology for ground improvement. Despite extensive research, the mechanism of vacuum preloading combined with electro-osmosis is still not properly understood, especially regarding the optimum electro-osmosis activation time. In this study, laboratory tests were performed to confirm the influence of electro-osmosis activation time on vacuum electro-osmosis consolidation of a dredged slurry. A total voltage of 12 V was used in five tests with different electro-osmosis activation times. During the combined process of vacuum preloading and electro-osmosis, the vacuum pressure, electric current, and volume of extracted water were monitored. The water content and shear strength were measured after the tests. The results indicated that electro-osmosis was activated when the degree of consolidation for the soil reached 60%. Thus, this approach can significantly promote the effectiveness of soil consolidation. The shear strength distribution along the depth was much more uniform in all tests with electro-osmosis. The shear strength decreased linearly with increasing distance from the anode rows, but sharp increases occurred near the cathode row (or prefabricated vertical drains).

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