Consolidación Con Seep/W
Páginas: 3 (668 palabras)
Publicado: 14 de octubre de 2011
GEO-SLOPE International Ltd, Calgary, Alberta, Canada
www.geo-slope.com
Consolidation
1 Introduction
It is possible to use a seepage solution to perform a consolidation analysis, since theTerzaghi consolidation equation is fundamentally identical to the seepage governing differential equation. Moreover, since closed form solutions are available for the consolidation equation, it is alsopossible to check the transient capability of the model by comparing hand-computed results for a one-dimensional consolidation problem with modeled results.
2
Feature highlights
GeoStudiofeature highlights include: • • Transient 1D flow Comparison with closed form solution
3
Geometry and boundary conditions
In accordance with the Terzaghi theory of consolidation, thedimensionless time factor T and the real time t can be related as follows:
t=
H 2T Cv
= = = maximum drainage path, non-dimensional time factor, and coefficient of consolidation.
where: H T
CvUsing the above equation and commonly available graphical charts, (see Lambe and Whitman, 1969, p. 408), the time t required to reach a certain degree of consolidation can be computed for a given timefactor T. The geometry for the model is very simple and is shown below. It consists of a 1D column, one meter in height with 20 divisions along the vertical region edge. An initial condition analysis issolved as steady state, in which a pressure head of 100m is placed at the top. In the transient consolidation analysis, a pressure of zero condition (Head = elevation) is specified along the topedge. There is no flow at the base of sides of the column.
SEEP/W Example File: Consolidation.doc (pdf) (gsz)
Page 1 of 4
GEO-SLOPE International Ltd, Calgary, Alberta, Canadawww.geo-slope.com
1.1 1.0 0.9 0.8 0.7
H= 1m
Elevation
0.6 0.5 0.4 0.3 0.2 0.1 0.0 0.45
0.55
0.65
0.75
0.85
0.95
1.05
Distance
4 Material properties
We know in this example that...
www.geo-slope.com
Consolidation
1 Introduction
It is possible to use a seepage solution to perform a consolidation analysis, since theTerzaghi consolidation equation is fundamentally identical to the seepage governing differential equation. Moreover, since closed form solutions are available for the consolidation equation, it is alsopossible to check the transient capability of the model by comparing hand-computed results for a one-dimensional consolidation problem with modeled results.
2
Feature highlights
GeoStudiofeature highlights include: • • Transient 1D flow Comparison with closed form solution
3
Geometry and boundary conditions
In accordance with the Terzaghi theory of consolidation, thedimensionless time factor T and the real time t can be related as follows:
t=
H 2T Cv
= = = maximum drainage path, non-dimensional time factor, and coefficient of consolidation.
where: H T
CvUsing the above equation and commonly available graphical charts, (see Lambe and Whitman, 1969, p. 408), the time t required to reach a certain degree of consolidation can be computed for a given timefactor T. The geometry for the model is very simple and is shown below. It consists of a 1D column, one meter in height with 20 divisions along the vertical region edge. An initial condition analysis issolved as steady state, in which a pressure head of 100m is placed at the top. In the transient consolidation analysis, a pressure of zero condition (Head = elevation) is specified along the topedge. There is no flow at the base of sides of the column.
SEEP/W Example File: Consolidation.doc (pdf) (gsz)
Page 1 of 4
GEO-SLOPE International Ltd, Calgary, Alberta, Canadawww.geo-slope.com
1.1 1.0 0.9 0.8 0.7
H= 1m
Elevation
0.6 0.5 0.4 0.3 0.2 0.1 0.0 0.45
0.55
0.65
0.75
0.85
0.95
1.05
Distance
4 Material properties
We know in this example that...
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