EN ISO 22476-16:2024
(Main)Geotechnical investigation and testing - Field testing - Part 16: Borehole shear test (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
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 22476-16:2024)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2025
Geotehnično preiskovanje in preskušanje - Preskušanje na terenu - 16. del: Strižni
preskus v vrtini (ISO 22476-16:2024)
Geotechnical investigation and testing - Field testing - Part 16: Borehole shear test (ISO
22476-16:2024)
Geotechnische Erkundung und Untersuchung - Felduntersuchungen - Teil 16:
Bohrscherversuch mit Phikometer (ISO 22476-16:2024)
Reconnaissance et essais géotechniques - Essais en place - Partie 16: Essai de
cisaillement en forage (ISO 22476-16:2024)
Ta slovenski standard je istoveten z: EN ISO 22476-16:2024
ICS:
93.020 Zemeljska dela. Izkopavanja. Earthworks. Excavations.
Gradnja temeljev. Dela pod Foundation construction.
zemljo Underground works
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 22476-16
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2024
EUROPÄISCHE NORM
ICS 93.020
English Version
Geotechnical investigation and testing - Field testing - Part
16: Borehole shear test (ISO 22476-16:2024)
Reconnaissance et essais géotechniques - Essais en Geotechnische Erkundung und Untersuchung -
place - Partie 16: Essai de cisaillement en forage (ISO Felduntersuchungen - Teil 16: Bohrscherversuch mit
22476-16:2024) Phikometer (ISO 22476-16:2024)
This European Standard was approved by CEN on 2 January 2024.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 22476-16:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 22476-16:2024) has been prepared by Technical Committee ISO/TC 182
"Geotechnics" in collaboration with Technical Committee CEN/TC 341 “Geotechnical Investigation and
Testing” the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by May 2025, and conflicting national standards shall be
withdrawn at the latest by May 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 22476-16:2024 has been approved by CEN as EN ISO 22476-16:2024 without any
modification.
International
Standard
ISO 22476-16
First edition
Geotechnical investigation and
2024-10
testing — Field testing —
Part 16:
Borehole shear test
Reconnaissance et essais géotechniques — Essais en place —
Partie 16: Essai de cisaillement en forage
Reference number
ISO 22476-16:2024(en) © ISO 2024
ISO 22476-16:2024(en)
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
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Published in Switzerland
ii
ISO 22476-16:2024(en)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and symbols . 1
3.1 Terms and definitions .1
3.2 Symbols .3
4 Equipment . 4
4.1 General .4
4.2 Phicometer probe .6
4.3 Connection tube line and pulling rods .6
4.3.1 Connection tube line .6
4.3.2 Pulling rods .6
4.4 Equipment at ground surface .8
4.4.1 Pulling device .8
4.4.2 Pressure-volume control unit (CU) .8
4.4.3 Regulation system of the traction speed of the probe .8
4.5 Means of measurement and control .8
4.5.1 Time .8
4.5.2 Pressure, volume and pulling force .8
4.5.3 Axial displacement .9
4.5.4 Display of readings .9
4.5.5 Dimensions of the shearing zone of the probe .9
5 Test procedure . 9
5.1 Checks and measurements before insertion of the probe in the ground .9
5.2 Borehole drilling phase, probe placing phase and zero setting .9
5.3 Minimum spacing between tests .10
5.4 Teeth insertion phase . 12
5.5 Shearing phase .14
5.5.1 Loading program – applied hold pressures in the probe .14
5.5.2 Successive shearing stages under pressure holds .14
5.5.3 End of the test . 15
6 Back-filling of the phicometer borehole .15
7 Safety requirements.15
8 Test results . .16
8.1 General .16
8.2 Shearing curve graph — Shear strength parameters φ and c .16
i i
8.3 Associated graphs .16
8.4 Adjustment and determination of the in situ phicometer angle of friction φ and the in
i
situ phicometer cohesion c .16
i
8.5 Examples of adjustment and determination of the in-situ angle of friction φ and
i
cohesion c .17
i
9 Reporting .18
9.1 General .18
9.2 Field report .
...
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