Centrifuge Testing on Suction Anchors: Double-Wall, Over-Consolidated Clay, and Layered Soil Profile

2006 ◽  
Author(s):  
P. Jeanjean ◽  
D. Znidarcic ◽  
R. Phillips ◽  
H. -Y. Ko ◽  
S. Pfister ◽  
...  
Keyword(s):  
Soil Profile ◽  
Layered Soil ◽  
Centrifuge Testing ◽  
Double Wall

Simulation of carrier-facilitated transport of phenanthrene in a layered soil profile

2002 ◽  
Vol 56 (3-4) ◽  
pp. 209-225 ◽  
Author(s):  
Alexander Prechtel ◽  
Peter Knabner ◽  
Eckhard Schneid ◽  
Kai Uwe Totsche
Keyword(s):  
Soil Profile ◽  
Facilitated Transport ◽  
Layered Soil

A Simple Approach for Estimating the First Resonance Peak of Layered Soil Profiles

2018 ◽  
Vol 12 (01) ◽  
pp. 1850005 ◽  
Author(s):  
Haizhong Zhang ◽  
Yan-Gang Zhao
Keyword(s):  
Soil Profile ◽  
Single Layer ◽  
Resonance Peak ◽  
Layered Soil ◽  
Soil Profiles ◽  
Simple Method ◽  
Amplification Ratio ◽  
Local Site ◽  
The One ◽  
Input Motion

The first resonance peak, Gs1, represents the amplification ratio of seismic motion when resonance between input motion and the local site occurs. The Gs1 is important for understanding amplification characteristics of local site, thus it has been adopted for evaluating site effects in the Japanese Seismic Code. Herein, a simple method for estimating the Gs1 of layered soil profiles is proposed. By replacing a multi-layer soil profile on bedrock with an equivalent one-layer soil profile, the Gs1 and fundamental period are easily obtained. To realize the one-layer profile, we develop a procedure to replace a two-layer soil profile on bedrock with an equivalent single-layer profile. This procedure is then applied successively to a multi-layer soil profile to obtain an equivalent single-layer soil profile. The validity of the proposed method is demonstrated by evaluating 67 representative sites. The results obtained using the proposed procedure agree well with those produced by the wave propagation method.

scholarly journals Uncertainty and sensitivity analysis of water transport modelling in a layered soil profile using fuzzy set theory

1999 ◽  
Vol 1 (2) ◽  
pp. 127-138 ◽  
Author(s):  
Karsten Schulz ◽  
Bernd Huwe
Keyword(s):  
Boundary Conditions ◽  
Water Flow ◽  
Set Theory ◽  
Fuzzy Set ◽  
Fuzzy Set Theory ◽  
Soil Profile ◽  
Closed Form Solution ◽  
Form Solution ◽  
Layered Soil ◽  
Transport Modelling

A methodology based on fuzzy set theory is presented to express imprecision of input data in a non-probabilitic sense. Imprecision may originate from indirect measurements, estimation routines, subjective interpretation, and expert judgement of available information. A numerical finite difference solution scheme was chosen to solve one-dimensional steady-state water flow in the unsaturated zone of a layered soil profile. To extend the solution algorithm to operate with fuzzy soil-hydraulic properties and boundary conditions, it is necessary to incorporate the scheme into a nonlinear optimisation routine from where resulting membership functions of soil water pressures with depths can be calculated. By subsequently considering the different imprecise parameters in the calculations and analysing their impact, it is concluded that resulting imprecision not only depends on the degree of imprecision and the number of uncertain parameters but also very much on the system context (e.g. boundary conditions and spatial distribution). The comparison with a closed form solution to solve the fuzzy water flow problem show the potential of that method to be extended towards transient, two- and three-dimensional process descriptions.

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