tangandonitsuka2000¶
Function summary¶
tangandonitsuka2000 (z, t, kv, kh, ks, kw, …) |
Consolidation by vertical drains under time-dependent loading |
Module listing¶
Tang and Onitsuka (2000) “Consolidation by vertical drains under time-dependent loading”.
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geotecha.consolidation.tangandonitsuka2000.
tangandonitsuka2000
(z, t, kv, kh, ks, kw, mv, gamw, rw, rs, re, H, drn, surcharge_vs_time=((0, 0, 100.0), (0, 1.0, 1.0)), tpor=None, nterms=20)[source]¶ Consolidation by vertical drains under time-dependent loading
An implementation of Tang and Onitsuka (2000)[Rb086c5dcba66-1]_.
Features:
- Single layer.
- Soil and drain properties constant with time.
- Vertical and radial drainage
- Well resistance.
- Load is uniform with depth but piecewise linear with time.
- Radially averaged pore pressure at depth.
- Average pore pressure of whole layer vs time.
- Settlement of whole layer vs time.
Parameters: - z : float or 1d array/list of float
Depth values for output.
- t : float or 1d array/list of float
Time for degree of consolidation calcs.
- kv, kh, ks, kw: float
Vertical, horizontal, smear zone, and drain permeability.
- mv : float
Volume compressibility.
- gamw : float
Unit weight of water.
- rw, rs, re: float
Drain radius, smear radius, radius of influence.
- H : float
Drainage path length.
- drn : [0,1]
Drainage boundary condition. drn=0 is pervious top pervious bottom. drn=1 is perviousbottom, impervious bottom.
- surcharge_vs_time: 2 element tuple or array/list, optional
(time, magnitude). default = ((0,0,100.0), (0,1.0,1.0)), i.e. instant load of magnitude one.
- tpor : float or 1d array/list of float, optional
Time values for pore pressure vs depth calcs. Default tpor=None i.e. time values will be taken from t.
- nterms : int, optional
Maximum number of series terms. Default nterms=20
Returns: - por : 2d array of float
Pore pressure at depth and time. ppress is an array of size (len(z), len(t)).
- avp : 1d array of float
Average pore pressure of layer
- settlement : 1d array of float
surface settlement
References
[1] Tang, Xiao-Wu, and Katsutada Onitsuka. ‘Consolidation by vertical drains under Time-Dependent Loading’. Int Journal for Numerical and Analytical Methods in Geomechanics 24, no. 9 (2000): 739-51. doi:10.1002/1096-9853(20000810)24:9<739::AID-NAG94>3.0.CO;2-B.