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Experimental Research on Cone Penetration Resistance
Cone penetration in soil is a complex process. The complexity arises partly from the boundary-value problem itself, in which a penetrometer with a conical tip is pushed down at constant rate through a (likely heterogeneous) soil mass of infinite extent in the horizontal direction but with a free horizontal surface, partly from the nature of the soil, a particulate material with strongly nonlinear mechanical response. Because of the value of using cone penetration as a means of characterizing a soil site, the problem of linking the cone penetration resistance to fundamental properties of the soil has received considerable attention in research. This paper examines contributions toward understanding of this problem from experimental mechanics. Experimental research has included mostly field tests and tests in test chambers and geotechnical centrifuges. Experimental work using half chambers and centrifuges with half cones penetrating a soil sample next to a Plexiglass wall with simultaneous collection of images during penetration has allowed use of digital image correlation (DIC) methods to understand the displacement field around a penetrating cone. Collectively, these techniques have generated a body of knowledge that generally allows effective interpretation of cone penetration tests both in sandy and clayey soils.
Experimental Research on Cone Penetration Resistance
Cone penetration in soil is a complex process. The complexity arises partly from the boundary-value problem itself, in which a penetrometer with a conical tip is pushed down at constant rate through a (likely heterogeneous) soil mass of infinite extent in the horizontal direction but with a free horizontal surface, partly from the nature of the soil, a particulate material with strongly nonlinear mechanical response. Because of the value of using cone penetration as a means of characterizing a soil site, the problem of linking the cone penetration resistance to fundamental properties of the soil has received considerable attention in research. This paper examines contributions toward understanding of this problem from experimental mechanics. Experimental research has included mostly field tests and tests in test chambers and geotechnical centrifuges. Experimental work using half chambers and centrifuges with half cones penetrating a soil sample next to a Plexiglass wall with simultaneous collection of images during penetration has allowed use of digital image correlation (DIC) methods to understand the displacement field around a penetrating cone. Collectively, these techniques have generated a body of knowledge that generally allows effective interpretation of cone penetration tests both in sandy and clayey soils.
Experimental Research on Cone Penetration Resistance
Salgado, Rodrigo (Autor:in)
Geo-Congress 2014 ; 2014 ; Atlanta, Georgia
Geo-Congress 2014 Keynote Lectures ; 140-163
24.02.2014
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Experimental Research on Cone Penetration Resistance
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