Clifton Associates News

Clifton at Canadian Geotechnical Society's 68th Annual Conference: GEOQuebec

GeoQuebec 2015 is the 68th Canadian Geotechnical Conference and the 7th Canadian Permafrost Conference being held in Québec City from September 20-23, 2015.  « Challenges from North to South » is the theme, which reflects the diversity of complex challenges that the geotechnical, cold regions engineering and permafrost communities need to address to support sustainable economic development.

Clifton's Mostafa Zadeh is presenting the following paper:

Estimation of Residual Fricton Angle of Clay Soils Using Artificial Neural Networks Modelling Mostafa Zadeh, Clifton Associates;  Amin Falamaki, Department of Civil Engineering – Payam Noor University, Shiraz (Shiraz, Iran)

Accurate estimation of site-specific soil strength parameters (e .g ., the internal friction angle and cohesion) is challenging in geotechnical engineering due to the limitations and complexities associated with obtaining undisturbed soil samples and laboratory shear test analysis . The residual friction angle of clay soils is particularly important parameter in slope stability analysis, especially in case of pre-existing slip surfaces and large deformations, and is commonly approximated from Atterberg limits and grain size distribution using traditional regression analysis . In this study, we tested the reliability of Artificial Neural Networks (ANNs) in predicting the residual friction angle degrees of different soil types based on their Atterberg Limits, clay size fraction and normal stress . The main objective was to find a satisfactory relationship between input and actual measured values using artificial neural network models . The effect of the network geometry on the performance of the models was also assessed . Strong correlation factors (e .g ., 0 .99) for training and testing data sets in model MLP741 demonstrate that ANNs are powerful tools for predicting soil strength parameters.

Session: Physical and Numerical Modelling 

Date: Tuesday, September 22, 10:45 - 12:15

Room: 2102b

Chair: Richard Bathurst 

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Posted on 9/18/2015