Theoretical Analysis and Numerical Simulation of Vacuum Preloading in Combination with Electro-Osmosis Consolidation
Publication: Geo-Frontiers 2011: Advances in Geotechnical Engineering
Abstract
As a new solid-liquid separation technology, electro-osmosis has many advantages such as high drainage rate, the convenience and flexibility of operation. However, high energy consumption limits the application of electro-osmosis. Many experimental studies have shown that it can effectively improve the intensity of the soil and give lower moisture content when using the vacuum preloading and electro-osmosis simultaneously compared to only using one of the two methods. In this paper, two analytical models are developed. One is the one dimensional model of vacuum preloading binding with electro-osmosis, another is one dimensional axisymmetric model of vacuum preloading binding with electro-osmosis. The theoretical solutions of the two models are derived, and numerical FEM models were also developed to compare with the theoretical results. From the results, we can see that the theoretical solution is highly compatible with the numerical simulation. The pore pressure and displacement distributions in the model are also presented.
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© 2011 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
ASCE Technical Topics:
- Analysis (by type)
- Biological processes
- Design (by type)
- Drainage
- Engineering fundamentals
- Environmental engineering
- Finite element method
- Geomechanics
- Geotechnical engineering
- Infrastructure
- Irrigation engineering
- Load factors
- Methodology (by type)
- Models (by type)
- Numerical analysis
- Numerical methods
- Numerical models
- Osmosis
- Pipeline systems
- Pipes
- Preloading
- Pressure distribution
- Pressure pipes
- Soil mechanics
- Soil properties
- Soil water
- Structural design
- Waste management
- Water and water resources
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