EN ISO 22476-16:2024

Geotechnical investigation and testing - Field testing - Part 16: Borehole shear test (ISO 22476‑16:2024)

This document is applicable to the borehole shear test using the phicometer procedure, commonly named the phicometer test (etymologically derived from phi for friction angle, co for cohesion and meter for measurement).
The test can be performed in all types of natural soils, fills and artificial soils, which can be saturated or not.
It does not apply to very soft fine soils, very loose coarse soils, medium strong to very strong rocks and natural or artificial soils with a predominance of cobbles having a particle diameter greater than 150 mm.
Generally, the test is applicable in soils with an order of magnitude of their in situ resistance characteristics as follows:
—     Ménard pressuremeter limit pressure: 0,4 MPa < plM < 3,5 MPa approximately or more than 4 MPa in granular non-cohesive soils;
—     CPT Cone resistance: 1,5 MPa —     SPT N: 8 The test can also be carried out in soils presenting a resistance outside these application limits as long as the representativeness of the results is assessed or validated by the analysis of the PBST graphs (see Clause 8).
This document applies only to tests carried out at a depth less than or equal to 30 m.
The parameters derived from this test are the shear strength properties, as the cohesion and angle of friction.

Geotechnische Erkundung und Untersuchung - Felduntersuchungen - Teil 16: Bohrscherversuch mit Phikometer (ISO 22476‑16:2024)

Dieses Dokument ist auf den Bohrloch-Scherversuch nach dem Phikometerverfahren anwendbar, der allgemein als Phikometerversuch bezeichnet wird (die Wortherkunft ergibt sich aus phi für den Reibungswinkel, ko für Kohäsion und meter für Messgerät).
Der Versuch kann in natürlichen Böden, Schüttmaterial und künstlichen Böden aller Arten durchgeführt werden, die gesättigt und ungesättigt sein können.
Er ist nicht auf sehr weiche feine Böden, sehr lockere grobe Böden, mittelstarkes bis sehr starkes Felsgestein sowie natürliche und künstliche Böden, in denen Geröll mit einer Korngröße von mehr als 150 mm vorherrscht, anwendbar.
Im Allgemeinen ist der Versuch anwendbar in Böden, deren In situ-Widerstandscharakteristika größen¬ordnungsmäßig wie folgt sind:
   Grenzdruck des Ménard-Pressiometers: ungefähr 0,4 MPa < plM < 3,5 MPa oder mehr als 4 MPa in körnigen, nicht kohäsiven Böden;
   CPT-Spitzenwiderstand: ungefähr 1,5 MPa < qc < 15 MPa, je nach Art des Bodens (siehe Anhang E);
   SPT N: ungefähr 8 < N < 50, je nach Art des Bodens (siehe Anhang E).
Der Versuch kann auch in Böden durchgeführt werden, deren Widerstand außerhalb dieser Anwendbarkeits¬grenzen liegt. Die Repräsentativität der Ergebnisse muss jedoch durch Analyse der PBST-Kurven (siehe Abschnitt 8) beurteilt oder validiert werden.
Dieses Dokument ist nur auf Versuche anwendbar, die in einer Tiefe von nicht mehr als 30 m durchgeführt werden.
Die aus diesem Versuch abgeleiteten Parameter sind die Scherfestigkeitseigenschaften wie Kohäsion und Reibungswinkel.

Reconnaissance et essais géotechniques - Essais en place - Partie 16: Essai de cisaillement en forage (ISO 22476‑16:2024)

Le présent document est applicable à l'essai de cisaillement en forage selon la procédure du phicomètre, couramment appelé essai au phicomètre (dont l'étymologie vient de phi (φ) qui désigne l'angle de frottement, co qui désigne la cohésion et mètre pour faire référence à une mesure).
L'essai peut être effectué dans tous les types de sols naturels, de remblais et de sols artificiels, pouvant être saturés ou non.
Il ne s'applique pas aux sols fins très mous, aux sols grossiers très lâches, aux roches moyennement résistantes à très résistantes ni aux sols naturels ou artificiels avec une prédominance de cailloux dont la granulométrie est supérieure à 150 mm.
En règle générale, l'essai est applicable aux sols dont les caractéristiques de résistance in situ sont de l'un des ordres de grandeur donnés ci-après:
—     Pression limite pressiométrique Ménard: 0,4 MPa < plM < 3,5 MPa environ, ou supérieure à 4 MPa dans des sols granulaires non cohésifs;
—     Mesure de la résistance au cône par essai de pénétration (CPT): 1,5 MPa < qc < 15 MPa environ, en fonction du type de sol (voir Annexe E);
—     SPT N: 8 < N < 50 environ, en fonction du type de sol (voir Annexe E).
L'essai peut également être effectué dans des sols dont la résistance se situe en dehors de ces limites d'application à condition d'évaluer ou de valider la représentativité des résultats par l'analyse des graphiques PBST (voir Article 8).
Le présent document s'applique uniquement aux essais réalisés à une profondeur inférieure ou égale à 30 m.
Les paramètres déduits de cet essai sont les propriétés de résistance au cisaillement, à savoir la cohésion et l'angle de frottement.

Geotehnično preiskovanje in preskušanje - Preskušanje na terenu - 16. del: Strižni preskus v vrtini (ISO/FDIS 22476‑16:2023)

General Information

• Status: Not Published
• Publication Date: 05-Nov-2024
• ICS: 93.020 - Earthworks. Excavations. Foundation construction. Underground works
• Technical Committee: CEN/TC 341 - Geotechnical Investigation and Testing
• Drafting Committee: CEN/TC 341 - Geotechnical Investigation and Testing
• Current Stage: 6055 - CEN Ratification completed (DOR) - Publishing
• Start Date: 02-Jan-2024
• Completion Date: 02-Jan-2024
• Ref Project: kSIST FprEN ISO 22476-16:2023 - Geotechnical investigation and testing - Field testing - Part 16: Borehole shear test (ISO/FDIS 22476‑16:2023)

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN ISO 22476-16:2023
01-junij-2023
Geotehnično preiskovanje in preskušanje - Preskušanje na terenu - 16. del: Strižni
preskus v vrtini (ISO/DIS 22476-16:2023)
Geotechnical investigation and testing - Field testing - Part 16: Borehole shear test
(ISO/DIS 22476-16:2023)
Geotechnische Erkundung und Untersuchung - Felduntersuchungen - Teil 16:
Bohrscherversuch mit Phikometer (ISO/DIS 22476-16:2023)
Reconnaissance et essais géotechniques - Essais en place - Partie 16: Essai de
cisaillement en forage (ISO/DIS 22476-16:2023)
Ta slovenski standard je istoveten z: prEN ISO 22476-16
ICS:
93.020 Zemeljska dela. Izkopavanja. Earthworks. Excavations.
Gradnja temeljev. Dela pod Foundation construction.
zemljo Underground works
oSIST prEN ISO 22476-16:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN ISO 22476-16:2023
oSIST prEN ISO 22476-16:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 22476-16
ISO/TC 182 Secretariat: BSI
Voting begins on: Voting terminates on:
2023-03-20 2023-06-12
Geotechnical investigation and testing — Field testing —
Part 16:
Borehole shear test
Reconnaissance et essais géotechniques — Essais en place —
Partie 16: Essai de cisaillement en forage
ICS: 93.020
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
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NOT BE REFERRED TO AS AN INTERNATIONAL
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ISO/DIS 22476-16:2023(E)
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TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
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PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023

oSIST prEN ISO 22476-16:2023
ISO/DIS 22476-16:2023(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 22476-16
ISO/TC 182 Secretariat: BSI
Voting begins on: Voting terminates on:

Geotechnical investigation and testing — Field testing —
Part 16:
Borehole shear test
Reconnaissance et essais géotechniques — Essais en place —
Partie 16: Essai de cisaillement en forage
ICS: 93.020
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2023
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
NOT BE REFERRED TO AS AN INTERNATIONAL
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on STANDARD UNTIL PUBLISHED AS SUCH.
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Website: www.iso.org ISO/DIS 22476-16:2023(E)
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oSIST prEN ISO 22476-16:2023
ISO/DIS 22476-16:2023(E)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 3
3 Terms, definitions and symbols . 3
3.1 Terms and definitions . 3
3.2 Symbols and abbreviations . 7
4 Equipment . 8
4.1 General . 8
4.2 Phicometer probe . 8
4.3 Connection tube line and pulling rods . 9
4.3.1 Connection tube line . 9
4.3.2 Pulling rods . 9
4.4 Equipment at ground surface . 11
4.4.1 Pulling device . 11
4.4.2 Pressure-volume control unit (CU) . 11
4.4.3 Regulation system of the traction speed of the probe . 11
4.5 Means of measurement and control . 11
4.5.1 Time . 11
4.5.2 Pressure, volume and pulling force .12
4.5.3 Axial displacement .12
4.5.4 Display of readings .12
4.5.5 Dimensions of the shearing zone of the probe .12
5 Test procedure .12
5.1 Checks and measurements before insertion of the probe in the ground .12
5.2 Borehole drilling phase, probe placing phase and zero setting .12
5.3 Minimum spacing between tests . 13
5.4 Teeth insertion phase .15
5.5 Shearing phase . 17
5.5.1 Loading program – applied hold pressures in the probe . 17
5.5.2 Successive shearing stages under pressure holds . 17
5.5.3 End of the test . 18
6 Back-filling of the phicometer borehole .19
7 Safety requirements.19
8 Test results . .19
8.1 General . 19
8.2 Shearing curve graph – shear strength parameters φ and c . 19
i i
8.3 Associated graphs . 20
8.4 Adjustment and determination of the in situ angle of friction φ and the in situ
i
cohesion c . 20
i
8.5 Examples of adjustment and determination of the in situ angle of friction φ and
i
cohesion c . 20
i
9 Reporting .22
9.1 General .22
9.2 Field report . 22
9.3 Test report . 24
9.4 Tests log . 25
Annex A (normative) Characteristics of the phicometer probe .26
Annex B (normative) Calibration, checks and corrections .27
Annex C (normative) Execution of the PBST borehole .31
iii
oSIST prEN ISO 22476-16:2023
ISO/DIS 22476-16:2023(E)
Annex D (normative) Determination of the parameters of shearing .33
Annex E (informative) Correlations to estimate p from other soil resistance parameters
LM
q and N .35
c
Annex F (normative) Accuracy and uncertainties .36
Annex G (informative) Examples of adjustment and determination of the in situ angle of
friction φ and cohesion c .38
i i
Annex H (informative) Example of installation of the PBST equipment .43
Bibliography . 44
iv
oSIST prEN ISO 22476-16:2023
ISO/DIS 22476-16:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing Inter
...