Analysis of Consolidation Processing of Piezocone Penetration Test in Cutoff Wall

2018 ◽  
pp. 391-396
Author(s):  
Xuepeng Li ◽  
Guojun Cai ◽  
Songyu Liu ◽  
Yuchao Li
Keyword(s):  
Penetration Test ◽  
Cutoff Wall ◽  
Piezocone Penetration Test

Application of Neural Network in Identifying Soil Strata by CPT or CPTU Data

2012 ◽  
Vol 170-173 ◽  
pp. 945-949
Author(s):  
Jun Hai Li
Keyword(s):  
Neural Network ◽  
Ground Improvement ◽  
Thin Layers ◽  
Slope Instability ◽  
General Regression Neural Network ◽  
Excess Pore Pressure ◽  
Soil Conditions ◽  
Penetration Test ◽  
Piezocone Penetration Test ◽  
Tip Resistance

In geotechnical engineering, assessment of the depth location of stratigraphic interfaces and the depth and thickness of thin layers can be critical in the design process. For example, stratigraphic interfaces can promote anisotropic soil strength response and potentially provide preferential slip planes that create slope instability. Similarly, the presence of thin, high permeability layers can alter groundwater flow regimes and rates of consolidation, which can hinder or accelerate methods of ground improvement. The piezocone penetration test (PCPT or CPTU) is an extension of the cone penetration test (CPT) and is able to measure cone tip resistance, sleeve friction and generated pore-water pressures simultaneously. The piezocone’s functionality is through the measured excess pore pressure profile, which reflects changes in the drainage conditions, and therefore soil conditions. In this paper the relationship between CPTU parameters and soil types and strata is analyzed, and the structure of a general regression neural network (GRNN) is designed, and the application program is programmed with MATLAB language. The results, identifying soil strata by CPTU, have confirmed that GRNN can be used to carry out the automatically identifying soil strata.

Finite element analysis of some factors affecting piezocone penetration test (CPTU) in clays

2010 ◽  
pp. 781-788
Author(s):  
Guojun Cai ◽  
Songyu Liu ◽  
Anand Puppala ◽  
Liyuan Tong ◽  
Guangyin Du
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Penetration Test ◽  
Element Analysis ◽  
Factors Affecting ◽  
Piezocone Penetration Test

Improved p-y curve models for large diameter and super-long cast-in-place piles using piezocone penetration test data

2021 ◽  
Vol 130 ◽  
pp. 103911
Author(s):  
Xiaoyan Liu ◽  
Guojun Cai ◽  
Lulu Liu ◽  
Songyu Liu ◽  
Weihong Duan ◽  
...  
Keyword(s):  
Test Data ◽  
Large Diameter ◽  
Penetration Test ◽  
Piezocone Penetration Test
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