FR3087800B1 - METHOD OF MEASURING THE ELASTO-PLASTIC PROPERTIES OF A SOIL THANKS TO A STATIC PENETROMETER - Google Patents

METHOD OF MEASURING THE ELASTO-PLASTIC PROPERTIES OF A SOIL THANKS TO A STATIC PENETROMETER Download PDF

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Publication number
FR3087800B1
FR3087800B1 FR1860074A FR1860074A FR3087800B1 FR 3087800 B1 FR3087800 B1 FR 3087800B1 FR 1860074 A FR1860074 A FR 1860074A FR 1860074 A FR1860074 A FR 1860074A FR 3087800 B1 FR3087800 B1 FR 3087800B1
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FR
France
Prior art keywords
measuring
hollow tube
soil
elasto
final displacement
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Active
Application number
FR1860074A
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French (fr)
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FR3087800A1 (en
Inventor
Pierre Riegel
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Equatech R&d
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Equatech R&d
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Publication date
Application filed by Equatech R&d filed Critical Equatech R&d
Priority to FR1860074A priority Critical patent/FR3087800B1/en
Priority to PCT/FR2019/052526 priority patent/WO2020089547A1/en
Priority to EP19813097.3A priority patent/EP3874251A1/en
Publication of FR3087800A1 publication Critical patent/FR3087800A1/en
Application granted granted Critical
Publication of FR3087800B1 publication Critical patent/FR3087800B1/en
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D1/00—Investigation of foundation soil in situ
    • E02D1/02—Investigation of foundation soil in situ before construction work
    • E02D1/022—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/24—Earth materials

Abstract

L'invention concerne un procédé de mesure des propriétés élasto-plastiques d'un sol, utilisant un pénétromètre statique muni d'un tube creux entourant une tige centrale apte à coulisser à l'intérieur du tube creux et terminée à une première extrémité par une pointe de mesure, le procédé comprenant les étapes suivantes : a) Enfoncer dans le sol le couple formé par le tube creux et la tige centrale pour amener la pointe de mesure à une profondeur souhaitée pour la mesure des propriétés élasto-plastiques du sol, ladite pointe de mesure étant en butée contre le tube creux ; b) Appliquer une première force constante à une deuxième extrémité de la tige, pendant une durée déterminée ; c) Mesurer un premier déplacement final, associé à l'enfoncement de la pointe de mesure dans le sol, au bout de la durée déterminée ; d) Réitérer les étapes b) et c) avec des forces croissantes successives, pour former une courbe représentant le déplacement final en fonction de la force, jusqu'à atteindre une énième force menant à un énième déplacement final, ledit énième déplacement final étant maximal et traduisant la contrainte à la rupture du sol ; e) Extraire un module de déformation du sol à partir de la pente de ladite courbe, dans un premier domaine élastique situé avant un point d'inflexion.The invention relates to a method for measuring the elasto-plastic properties of a soil, using a static penetrometer provided with a hollow tube surrounding a central rod capable of sliding inside the hollow tube and terminated at a first end by a hollow tube. measuring tip, the method comprising the following steps: a) Driving the couple formed by the hollow tube and the central rod into the ground to bring the measuring tip to a desired depth for measuring the elasto-plastic properties of the soil, said measuring tip being in abutment against the hollow tube; b) Apply a first constant force to a second end of the rod, for a determined duration; c) Measure a first final displacement, associated with the sinking of the measuring tip into the ground, at the end of the determined period; d) Repeat steps b) and c) with successive increasing forces, to form a curve representing the final displacement as a function of the force, until an umpteenth force is reached leading to an umpteenth final displacement, said nth final displacement being maximum and reflecting the stress at ground failure; e) extracting a soil deformation modulus from the slope of said curve, in a first elastic domain located before a point of inflection.

FR1860074A 2018-10-31 2018-10-31 METHOD OF MEASURING THE ELASTO-PLASTIC PROPERTIES OF A SOIL THANKS TO A STATIC PENETROMETER Active FR3087800B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR1860074A FR3087800B1 (en) 2018-10-31 2018-10-31 METHOD OF MEASURING THE ELASTO-PLASTIC PROPERTIES OF A SOIL THANKS TO A STATIC PENETROMETER
PCT/FR2019/052526 WO2020089547A1 (en) 2018-10-31 2019-10-23 Method for measuring the elasto-plastic properties of soil using a static penetrometer
EP19813097.3A EP3874251A1 (en) 2018-10-31 2019-10-23 Method for measuring the elasto-plastic properties of soil using a static penetrometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1860074A FR3087800B1 (en) 2018-10-31 2018-10-31 METHOD OF MEASURING THE ELASTO-PLASTIC PROPERTIES OF A SOIL THANKS TO A STATIC PENETROMETER

Publications (2)

Publication Number Publication Date
FR3087800A1 FR3087800A1 (en) 2020-05-01
FR3087800B1 true FR3087800B1 (en) 2020-12-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR1860074A Active FR3087800B1 (en) 2018-10-31 2018-10-31 METHOD OF MEASURING THE ELASTO-PLASTIC PROPERTIES OF A SOIL THANKS TO A STATIC PENETROMETER

Country Status (3)

Country Link
EP (1) EP3874251A1 (en)
FR (1) FR3087800B1 (en)
WO (1) WO2020089547A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113186892A (en) * 2021-05-08 2021-07-30 唐山工业职业技术学院 Static sounding test method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4398414A (en) * 1979-11-08 1983-08-16 Macgregor John S Electrical friction sleeve cone penetrometer
US4382384A (en) * 1981-06-15 1983-05-10 The Regents Of The University Of California Acoustic penetrometer for subsoil investigation
NL1029595C1 (en) * 2005-07-22 2007-01-23 Ver Bedrijven Van Den Berg Hee Cone penetrometer.
CN103698366A (en) * 2014-01-02 2014-04-02 东南大学 Multifunctional digital rock-soil static cone penetration test system

Also Published As

Publication number Publication date
FR3087800A1 (en) 2020-05-01
WO2020089547A1 (en) 2020-05-07
EP3874251A1 (en) 2021-09-08

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