Geosoft Sp. z o.o. articles

A comprehensive discussion of the technical aspects of the Cone Penetration Test method and the principles and methods for interpreting these soundings. This monograph includes a range of interpretation methods that allow for the estimation of a number of basic geotechnical parameters.

A concise description of various field tests with particular emphasis on CPT testing.

SYNOPSIS: Over the two decades since its introduction into the United States, the CPT has now established its position as a routine, reliable, and expedient means for site characterization, stratigraphic profiling, evaluation of soil engineering parameters, and geotechnical design. Piezocones provide measurements of penetration pore water pressures either midface (type 1) or at the shoulder (type 2). The latter is necessary for the proper correction of tip resistance in soft soils, while the

ABSTRACT: Site investigations for ports, bridges, and offshore facilities benefit from the use of piezocone tests in the field exploration program since multiple continuous readings with depth are obtained by the soundings. The interpretation of the piezocone resistances is discussed in context with geostratigraphy and the interpretation of strength parameters needed in geotechnical design. All three piezocone readings can be used to advantage in profiling site conditions and soil properties.

Abstract: The paper deals with application of CPTu test results for the probabilistic modeling of dumping grounds. The statistical measures use results from 42 CPT test points located in the lignite mine dumping ground from the region of Central Europe. Both the tip resistance qc as well as local friction f s are tested. Based on the mean values and standard deviations of measured quantities the specific zones in the dumping site profile are distinguished. For three main zones standard deviat

Offshore developments for hydrocarbon resources have now progressed to water depths approaching 3000 m, with geotechnical design increasingly focused on soft sediments in the upper 30 m or so of the seabed. Due to the difficulties and high cost in recovering high-quality samples from deepwater sites, there is increasing dependence on in situ testing techniques for determining the geotechnical design parameters. This paper summarizes the findings from a joint industry project, undertaken by th

A numerical analysis is presented to model the cone penetration test (CPT) tip resistance in layered soil. Analyses are performed for two-layer soils composed of either sands with different relative densities or different materials (sand and clay). Parametric numerical modeling is used to determine the distance that a cone senses a new upcoming soil layer interface or a layer interface behind. Analyses are also carried out for a thin sand layer embedded in soft clay. It is seen that the full