Reliability-based semi-analytical solution for ground improvement by PVDs incorporating inherent (spatial) variability of soil
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The design of soil consolidation via prefabricated vertical drains (PVDs) has been traditionally carried out deterministically and thus can be misleading due to the ignorance of the uncertainty associated with the inherent (spatial) variation of soil properties. To treat such uncertainty in the design process of soil consolidation by PVDs, stochastic approaches that combine the finite element method with the Monte Carlo technique (FEMC) have been usually used. However, such approaches are complex, computationally intensive and time consuming. In this paper, a simpler reliability-based semi-analytical (RBSA) method is proposed as an alternative tool to the complex FEMC approach for soil consolidation by PVDs, considering soil spatial variability. The RBSA method is found to give similar results to those obtained from the FEMC approach and can thus be used with confidence in practice.
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Bari, Md. Wasiul (2012)The research presented in this thesis focuses on the probabilistic modelling of soil consolidation via prefabricated vertical drains (PVDs) considering soil spatial variability. Soils are highly variable from one point ...
Shahin, Mohamed; Bari, Wasiul (2012)The geotechnical community is well aware of the fact that soils are highly variable in the ground due to the uneven soil micro fabric, geological deposition and stress history. In recent years, there has been an increasing ...
Probabilistic Study into the Impact of Soil Spatial Variability on Soil Consolidation by Prefabricated Vertical DrainsBari, Wasiul; Shahin, Mohamed; Nikraz, Hamid (2012)Soil consolidation by prefabricated vertical drains (PVDs) relies on several soil properties that are spatially variable such as the coefficients of permeability and volume compressibility. However, available design methods ...