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A platform for research: civil engineering, architecture and urbanism
Piecewise-linear large-strain model for radial consolidation with non-Darcian flow and general constitutive relationships
https://orcid.org/0000-0002-1052-388X
Abstract A piecewise-linear large-strain radial consolidation model, called VRCS1, is developed for soft soil stabilized by prefabricated vertical drain (PVD) assisted by vacuum-surcharge combined preloading incorporating non-Darcian flow and nonlinear compressibility and permeability relationships. VRCS1 accounts for large strain, soil self-weight, smear effect, partial drain penetration, time-dependent surcharge loading, time- and depth-dependent vacuum pressure, unload/reload effects, radial and vertical flows, hydraulic conductivity anisotropy, non-Darcian flow and nonlinearly varying relationships of compressibility and permeability. The compressibility and permeability constitutive relationships are specified using discrete data points and, as a result, VRCS1 is more flexible than other existing models in terms of considering a variety of different constitutive relationships. VRCS1 shows excellent agreement with other exiting solutions and field measurements involving Darcian flow and non-Darcian flow, surcharge loading and surcharge-vacuum combined loading, and small and large strains. A series of numeric examples indicates that compressibility and permeability relationships can have significant effect on the rate of radial consolidation. Results also indicate that solutions based on small-strain theory can be in significant error for large strain conditions, especially when non-Darcian flow and nonlinear constitutive relationships are encountered.
Piecewise-linear large-strain model for radial consolidation with non-Darcian flow and general constitutive relationships
https://orcid.org/0000-0002-1052-388X
Abstract A piecewise-linear large-strain radial consolidation model, called VRCS1, is developed for soft soil stabilized by prefabricated vertical drain (PVD) assisted by vacuum-surcharge combined preloading incorporating non-Darcian flow and nonlinear compressibility and permeability relationships. VRCS1 accounts for large strain, soil self-weight, smear effect, partial drain penetration, time-dependent surcharge loading, time- and depth-dependent vacuum pressure, unload/reload effects, radial and vertical flows, hydraulic conductivity anisotropy, non-Darcian flow and nonlinearly varying relationships of compressibility and permeability. The compressibility and permeability constitutive relationships are specified using discrete data points and, as a result, VRCS1 is more flexible than other existing models in terms of considering a variety of different constitutive relationships. VRCS1 shows excellent agreement with other exiting solutions and field measurements involving Darcian flow and non-Darcian flow, surcharge loading and surcharge-vacuum combined loading, and small and large strains. A series of numeric examples indicates that compressibility and permeability relationships can have significant effect on the rate of radial consolidation. Results also indicate that solutions based on small-strain theory can be in significant error for large strain conditions, especially when non-Darcian flow and nonlinear constitutive relationships are encountered.
Piecewise-linear large-strain model for radial consolidation with non-Darcian flow and general constitutive relationships
https://orcid.org/0000-0002-1052-388X
Abstract A piecewise-linear large-strain radial consolidation model, called VRCS1, is developed for soft soil stabilized by prefabricated vertical drain (PVD) assisted by vacuum-surcharge combined preloading incorporating non-Darcian flow and nonlinear compressibility and permeability relationships. VRCS1 accounts for large strain, soil self-weight, smear effect, partial drain penetration, time-dependent surcharge loading, time- and depth-dependent vacuum pressure, unload/reload effects, radial and vertical flows, hydraulic conductivity anisotropy, non-Darcian flow and nonlinearly varying relationships of compressibility and permeability. The compressibility and permeability constitutive relationships are specified using discrete data points and, as a result, VRCS1 is more flexible than other existing models in terms of considering a variety of different constitutive relationships. VRCS1 shows excellent agreement with other exiting solutions and field measurements involving Darcian flow and non-Darcian flow, surcharge loading and surcharge-vacuum combined loading, and small and large strains. A series of numeric examples indicates that compressibility and permeability relationships can have significant effect on the rate of radial consolidation. Results also indicate that solutions based on small-strain theory can be in significant error for large strain conditions, especially when non-Darcian flow and nonlinear constitutive relationships are encountered.
Piecewise-linear large-strain model for radial consolidation with non-Darcian flow and general constitutive relationships
Pu, Hefu (author) / Yang, Peng (author) / Lu, Mengmeng (author) / Zhou, Yang (author) / Chen, Jiannan (author)
2019-10-26
Article (Journal)
Electronic Resource
English
Piecewise-Linear Model for Large Strain Radial Consolidation
| British Library Online Contents | 2003
Piecewise-Linear Model for Large Strain Radial Consolidation
| Online Contents | 2003
| British Library Online Contents | 2017