scholarly journals Cone-penetration testing in geotechnical practice

2009 ◽  
Vol 46 (6) ◽  
pp. 237-237 ◽  
Author(s):  
◽  
◽  
Keyword(s):  
Cone Penetration ◽  
Penetration Testing ◽  
Cone Penetration Testing

scholarly journals Predicting land deformation by integrating InSAR data and cone penetration testing through machine learning techniques

2020 ◽  
Vol 382 ◽  
pp. 525-529
Author(s):  
Melika Sajadian ◽  
Ana Teixeira ◽  
Faraz S. Tehrani ◽  
Mathias Lemmens
Keyword(s):  
Machine Learning ◽  
Soil Mechanics ◽  
Machine Learning Techniques ◽  
Cone Penetration ◽  
Penetration Testing ◽  
Cone Penetration Testing ◽  
Learning Techniques ◽  
Land Deformation ◽  
Spatio Temporal

Abstract. Built environments developed on compressible soils are susceptible to land deformation. The spatio-temporal monitoring and analysis of these deformations are necessary for sustainable development of cities. Techniques such as Interferometric Synthetic Aperture Radar (InSAR) or predictions based on soil mechanics using in situ characterization, such as Cone Penetration Testing (CPT) can be used for assessing such land deformations. Despite the combined advantages of these two methods, the relationship between them has not yet been investigated. Therefore, the major objective of this study is to reconcile InSAR measurements and CPT measurements using machine learning techniques in an attempt to better predict land deformation.

Development of Soil Restraints for Buried Pipelines in Muskeg Soils Subjected to Lateral Ground Displacements

2020 ◽  
Author(s):  
Dharma Wijewickreme ◽  
Thushara Jayasinghe
Keyword(s):  
Constitutive Model ◽  
Numerical Models ◽  
Field Testing ◽  
Soil Mass ◽  
Systematic Research ◽  
Cone Penetration ◽  
Buried Pipelines ◽  
Penetration Testing ◽  
Cone Penetration Testing ◽  
Soil Pipe

Abstract A systematic research program was undertaken with the objective of developing quantitative geotechnical parameters to support soil-pipe interaction assessment for buried pipelines in muskeg. For this purpose, a field geotechnical investigation program comprising cone penetration testing (SCPT) with shear wave velocity (Vs) measurements, electronic field vane shear testing (eVST), full-flow ball penetration testing (BPT), and pressuremeter testing (PMT), along with fixed-piston tube soil sampling was undertaken in a muskeg soil terrain. The data from field testing were initially interpreted to obtain typical stiffness and strength parameters for the subject soils. These parameters were then used to numerically simulate pressuremeter tests and the results were compared with those obtained from field pressuremeter testing; the intent was to calibrate a suitable constitutive model to represent the muskeg soil mass. These ascalibrated constitutive model was then applied on numerical models developed to simulate buried pipelines in muskeg soil subject to relative lateral ground movements. The work is aimed at developing a framework to generate soil restraint versus relative ground displacement relations (“soil springs”) to assess soil-pipe interaction of pipelines buried in muskeg soils. Initial results from the research are presented herein, with a comparison made between soil springs developed from numerical analyses and those generated from current practice guidelines.

Cone Penetration Testing of Radiologically Contaminated Burial Trenches

2009 ◽  
Author(s):  
Gareth Walker ◽  
Nick Jefferies ◽  
Matt Lennard ◽  
Jeremy Lightfoot
Keyword(s):  
Detection System ◽  
Liquid Waste ◽  
Site Investigation ◽  
Potential Hazard ◽  
Cone Penetration ◽  
Penetration Testing ◽  
Cone Penetration Testing ◽  
Geophysical Surveys ◽  
Investigation Technique ◽  
The Uk

Golder Associates (UK) Ltd, in partnership with Serco Assurance (Serco), undertook targeted cone penetration testing (CPT) of a series of six parallel on-site burial trenches on a nuclear licensed site in the UK. The form and concentration of radioactive and chemical material within the trenches is unknown. CPT was used to confirm the location of the bund walls and to characterise the material within the trenches. The CPT technique involves hydraulically pushing rods fitted with specialist characterisation “cones” into the ground. CPT generates no solid or liquid waste, and allowed rapid investigation of the trenches and bunds while ensuring exposure of radiation and contamination to workers was kept to a minimum, or removed in entirety. As a result of the unknown nature of radiological contamination within the trenches and the potential of introducing contamination into the inside of the CPT truck, a purpose-built extraction rig was constructed to withdraw the CPT equipment from the ground. Extraction of the equipment assumed airborne radioactive contamination was a potential hazard. The CPT locations selected for the investigation were based on non-intrusive geophysical survey work and a radiation survey, which identified the approximate location of the trenches, anomalies within the material (e.g. metallic objects), and radiation hotspots. The results of the geophysical surveys were overlaid with the original as-built drawings of the trenches. During the investigation the following investigation cones were deployed: • Resistance/friction cone, which determines geology through measurement of the friction on the sleeve of the cone and resistance on the tip of the cone; this was used to investigate the geology of the bunds. • Total gamma cone, which was used to obtain total gamma radiation results (in counts per second); • Groundwater sampler (BAT Sampler™), which was used to obtain a water sample from beneath the trenches; • Video cone, which was used to obtain a visual recording of the material within the trenches; and • Conductivity cone, which was used to investigate the presence of and depth to bodies of water below ground level (e.g. perched water, regional groundwater). The investigation collected essential data from an area of the site that had not previously been investigated, while minimising potential radiological exposure to all workers, and producing no investigation-derived waste. The investigation therefore confirmed the efficacy of cone penetration testing as a valid site investigation technique in a high hazard area. The data acquired from the CPT investigation and geophysical investigation also allowed boreholes to be sited in the bund walls between the trenches. Siting of the boreholes was a major risk for the project and presented a significant potential hazard. Golder has successfully used CPT on nuclear sites in the UK: as an innovative site investigation technique to facilitate radiological characterisation of an area with variable ground conditions; to investigate organic solvent plumes; and for the installation of blind tubes as a way of conducting subsurface radiation surveys and as part of a leak detection system (work in progress in partnership with Serco).

Cone penetration testing in snow

1987 ◽  
Vol 24 (3) ◽  
pp. 335-341 ◽  
Author(s):  
Leo H. J. Schaap ◽  
Paul M. B. Föhn
Keyword(s):  
Swiss Alps ◽  
Cone Penetrometer ◽  
Test Results ◽  
Penetration Test ◽  
Cone Penetration ◽  
Penetration Testing ◽  
Cone Resistance ◽  
Cone Penetration Testing ◽  
Chart Recorder ◽  
Special Cone

The application of the electric cone penetrometer test in snow has been investigated and compared with results from the ram penetrometer test, which is normally used for snow profiling and slope stability analysis. A special cone penetrometer system was built consisting of a sensitive 1 cm2 electric cone, depth transducer, and battery-operated chart recorder. The instruments were tested in April 1985 at three different locations in the Swiss Alps and the test results were compared with those of the ram penetrometer tests.The tests yielded repeatable results up to a depth of 4 m with a high resolution of different snow layers. The electric cone tests show more layers than found in the ram profile and snow pit analyses. In soft snow the ram resistances appear to be, on average, about 30% lower than cone resistance values. Recommendations are given for the future use of electric cone penetration testing in snow. Key words: snow, snowpack analysis, cone penetration test, ram penetrometer, cone resistance, ram resistance, ram number.

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