Geotechnical investigation and testing - Testing of geotechnical structures - Part 5: Testing of grouted anchors (ISO 22477-5:2018)

This Standard establishes specifications for the execution of tension tests to be carried out on an anchor grouted in the ground, as defined in EN 1997-1 and EN 1537. Three methods of test are recognised by this Standard. Method 1 involves cyclic tension loading with measurement of displacement at the load stages. Method 2 involves cyclic tension loading with measurement of loss of load after lock-off at peak load and Method 3 involves step-loading with measurement of displacement under successive maintained tension loads.
The standard provides specifications for three types of tension tests as defined in EN 1997-1 and EN 1537: investigation tests, suitability tests and acceptance tests.
The standard provides specifications for the experimental devices, the measurement apparatus, the test procedures, the definition and the presentation of the test results and the content of records.

Geotechnische Erkundung und Untersuchung - Prüfung von geotechnischen Bauwerken und Bauwerksteilen - Teil 5: Prüfung von Verpressankern (ISO 22477-5:2018)

Dieses Dokument gilt für die nach EN 1997-1 und EN 1537 durchzuführenden Prüfungen. In diesem Dokument werden drei Prüfverfahren beschrieben. Beim Prüfverfahren 1 wird die Last in mehreren Zyklen stufenweise erhöht und die Verschiebung bei konstant gehaltener Last gemessen. Beim Prüfverfahren 2 wird die Last in mehreren Zyklen aufgebracht und auf den Laststufen der Kraftabfall gemessen. Beim Prüfverfahren 3 wird die Last schrittweise erhöht und die Verschiebung bei konstant gehaltener Last gemessen.
Dieses Dokument enthält Festlegungen zur Versuchseinrichtung, zu den Messeinrichtungen, dem Versuchsablauf, der Darstellung der Ergebnisse und dem Umfang der Aufzeichnungen.
ANMERKUNG   Dieses Dokument enthält keine Angaben zur Größe der Prüfkraft und den Grenzkriterien. Diese sind für CEN-Länder in EN 1997 1 oder dem zugehörigen Nationalen Anhang und für ISO-Länder in vergleichbaren nationalen Anwendungsdokumenten zu dieser Prüfnorm angegeben.

Reconnaissance et essais géotechniques - Essais des structures géotechniques - Partie 5: Essais de tirants d'ancrage (ISO 22477-5:2018)

La présente norme établit les spécifications relatives à l'exécution des essais de chargement devant être réalisés sur un tirant d'ancrage, tels que définis dans l'EN 1997‑1et l'EN 1537. La présente norme introduit trois méthodes d'essai. La méthode d'essai 1 implique un chargement cyclique et une mesure du déplacement pour chaque palier de chargement. La méthode d'essai 2 implique un chargement cyclique et une mesure de la perte de tension lors des différentes phases de traction et la méthode d'essai 3 implique un chargement par paliers progressifs et une mesure du déplacement à ces différents paliers.
La norme fournit des dispositions concernant les dispositifs expérimentaux, l'appareillage de mesure, les procédures d'essai, la définition et la présentation des résultats d'essai et le contenu des enregistrements.
NOTE La norme ne fournit aucune disposition concernant les valeurs de la charge d'épreuve et les valeurs limites. Ces éléments sont spécifiés dans l'EN 1997‑1 ou son Annexe nationale dans le cas des pays membres du CEN et dans des documents d'application nationale similaires relatifs à la présente norme d'essai dans le cas des pays membres de l'ISO.

Geotehnično preiskovanje in preskušanje - Preskušanje geotehničnih konstrukcij - 5. del: Preskušanje injektiranih sider (ISO 22477-5:2018)

Ta standard določa specifikacije za izvajanje nateznih preskusov za sidra, injektirana v tla, kot je določeno v standardih EN 1997-1 in EN 1537. Ta standard priznava tri metode preskušanja. 1. metoda zajema ciklično natezno obremenitev z meritvami premikov v stopnjah obremenitve. 2. metoda zajema ciklično natezno obremenitev z meritvami izgube obremenitve po blokadi pri vršni obremenitvi, 3. metoda pa zajema stopenjsko obremenitev z meritvami premikov po zaporedno vzdrževanih nateznih obremenitvah.  Standard podaja specifikacije za tri vrste nateznih preskusov, kot je opredeljeno v standardih EN 1997-1 in EN 1537: preiskovalni preskusi, preskusi primernosti in preskusi sprejemljivosti.  Standard zagotavlja specifikacije za preskusne naprave, merilne aparate, preskusne postopke, opredelitev ter predstavitev preskusnih rezultatov in vsebine zapisov.

General Information

Status
Published
Public Enquiry End Date
14-Dec-2016
Publication Date
12-Nov-2018
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
10-Oct-2018
Due Date
15-Dec-2018
Completion Date
13-Nov-2018

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SLOVENSKI STANDARD
SIST EN ISO 22477-5:2018
01-december-2018
*HRWHKQLþQRSUHLVNRYDQMHLQSUHVNXãDQMH3UHVNXãDQMHJHRWHKQLþQLKNRQVWUXNFLM
GHO3UHVNXãDQMHLQMHNWLUDQLKVLGHU ,62

Geotechnical investigation and testing - Testing of geotechnical structures - Part 5:

Testing of grouted anchors (ISO 22477-5:2018)
Geotechnische Erkundung und Untersuchung - Prüfung von geotechnischen Bauwerken
und Bauwerksteilen - Teil 5: Prüfung von Verpressankern (ISO 22477-5:2018)

Reconnaissance et essais géotechniques - Essais des structures géotechniques - Partie

5: Essais de tirants d'ancrage (ISO 22477-5:2018)
Ta slovenski standard je istoveten z: EN ISO 22477-5:2018
ICS:
93.020 Zemeljska dela. Izkopavanja. Earthworks. Excavations.
Gradnja temeljev. Dela pod Foundation construction.
zemljo Underground works
SIST EN ISO 22477-5:2018 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 22477-5:2018
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SIST EN ISO 22477-5:2018
EN ISO 22477-5
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2018
EUROPÄISCHE NORM
ICS 93.020
English Version
Geotechnical investigation and testing - Testing of
geotechnical structures - Part 5: Testing of grouted
anchors (ISO 22477-5:2018)

Reconnaissance et essais géotechniques - Essais des Geotechnische Erkundung und Untersuchung - Prüfung

structures géotechniques - Partie 5: Essais de tirants von geotechnischen Bauwerken und Bauwerksteilen -

d'ancrage (ISO 22477-5:2018) Teil 5: Prüfung von Verpressankern (ISO 22477-
5:2018)
This European Standard was approved by CEN on 19 August 2018.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey 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

© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 22477-5:2018 E

worldwide for CEN national Members.
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SIST EN ISO 22477-5:2018
EN ISO 22477-5:2018 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 22477-5:2018
EN ISO 22477-5:2018 (E)
European foreword

This document (EN ISO 22477-5:2018) 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 March 2019, and conflicting national standards shall

be withdrawn at the latest by March 2019.

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.

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, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 22477-5:2018 has been approved by CEN as EN ISO 22477-5:2018 without any

modification.
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SIST EN ISO 22477-5:2018
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SIST EN ISO 22477-5:2018
INTERNATIONAL ISO
STANDARD 22477-5
First edition
2018-08
Geotechnical investigation and
testing — Testing of geotechnical
structures —
Part 5:
Testing of grouted anchors
Reconnaissance et essais géotechniques — Essais des structures
géotechniques —
Partie 5: Essais de tirants d'ancrage
Reference number
ISO 22477-5:2018(E)
ISO 2018
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SIST EN ISO 22477-5:2018
ISO 22477-5:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018

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 the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address

below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
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SIST EN ISO 22477-5:2018
ISO 22477-5:2018(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ................................................................................................................................................................................................................................vi

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms, definitions and symbols ............................................................................................................................................................ 1

4 Equipment ................................................................................................................................................................................................................... 4

4.1 Test loading set-up............................................................................................................................................................................... 4

4.2 Reaction system ..................................................................................................................................................................................... 7

4.3 Loading device......................................................................................................................................................................................... 7

4.4 Load measurement .............................................................................................................................................................................. 8

4.5 Displacement measurement........................................................................................................................................................ 8

4.6 Time and temperature measurement ................................................................................................................................. 8

5 Test types ...................................................................................................................................................................................................................... 8

5.1 General ........................................................................................................................................................................................................... 8

5.2 Investigation test ................................................................................................................................................................................... 8

5.3 Suitability test .......................................................................................................................................................................................... 9

5.4 Acceptance test ....................................................................................................................................................................................... 9

6 Execution ...................................................................................................................................................................................................................... 9

6.1 Test location .............................................................................................................................................................................................. 9

6.2 Test anchors............................................................................................................................................................................................... 9

6.3 Time period between installation and test ..................................................................................................................... 9

6.4 Test preparation ..................................................................................................................................................................................10

6.5 Proof load .................................................................................................................................................................................................10

6.6 Datum load ..............................................................................................................................................................................................10

6.7 Group testing .........................................................................................................................................................................................10

6.8 Alternating load testing ................................................................................................................................................................10

7 Test report ................................................................................................................................................................................................................11

7.1 Investigation and suitability tests .......................................................................................................................................11

7.2 Acceptance test ....................................................................................................................................................................................12

8 Test Method 1 ........................................................................................................................................................................................................13

8.1 General ........................................................................................................................................................................................................13

8.2 Investigation test ................................................................................................................................................................................13

8.2.1 General...................................................................................................................................................................................13

8.2.2 Loading procedure ......................................................................................................................................................13

8.2.3 Measurements and checks ...................................................................................................................................14

8.2.4 Test results .........................................................................................................................................................................15

8.3 Suitability test .......................................................................................................................................................................................15

8.3.1 General...................................................................................................................................................................................15

8.3.2 Loading procedure ......................................................................................................................................................15

8.3.3 Measurements and checks ...................................................................................................................................16

8.3.4 Test results .........................................................................................................................................................................17

8.4 Acceptance test ....................................................................................................................................................................................20

8.4.1 General...................................................................................................................................................................................20

8.4.2 Loading procedure ......................................................................................................................................................20

8.4.3 Measurements and checks ...................................................................................................................................21

8.4.4 Test results .........................................................................................................................................................................21

9 Test Method 2 ........................................................................................................................................................................................................22

9.1 General ........................................................................................................................................................................................................22

9.2 Investigation test ................................................................................................................................................................................22

9.2.1 General...................................................................................................................................................................................22

9.2.2 Loading procedure ......................................................................................................................................................22

© ISO 2018 – All rights reserved iii
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SIST EN ISO 22477-5:2018
ISO 22477-5:2018(E)

9.2.3 Measurements and checks ...................................................................................................................................22

9.2.4 Test results .........................................................................................................................................................................23

9.3 Suitability test .......................................................................................................................................................................................23

9.3.1 General...................................................................................................................................................................................23

9.3.2 Loading procedure ......................................................................................................................................................24

9.3.3 Measurements and checks ...................................................................................................................................25

9.3.4 Test results .........................................................................................................................................................................25

9.4 Acceptance test ....................................................................................................................................................................................25

9.4.1 General...................................................................................................................................................................................25

9.4.2 Loading procedure ......................................................................................................................................................26

9.4.3 Measurements and checks ...................................................................................................................................27

9.4.4 Test results .........................................................................................................................................................................27

10 Test Method 3 ........................................................................................................................................................................................................28

10.1 General ........................................................................................................................................................................................................28

10.2 Investigation test ................................................................................................................................................................................28

10.2.1 General...................................................................................................................................................................................28

10.2.2 Loading procedure ......................................................................................................................................................28

10.2.3 Measurements and checks ...................................................................................................................................29

10.2.4 Test results .........................................................................................................................................................................30

10.3 Suitability test .......................................................................................................................................................................................30

10.3.1 General...................................................................................................................................................................................30

10.3.2 Loading procedure ......................................................................................................................................................30

10.3.3 Measurements and checks ...................................................................................................................................31

10.3.4 Test results .........................................................................................................................................................................32

10.4 Acceptance test ....................................................................................................................................................................................32

10.4.1 General...................................................................................................................................................................................32

10.4.2 Loading procedure ......................................................................................................................................................32

10.4.3 Measurements and checks ...................................................................................................................................33

10.4.4 Test results .........................................................................................................................................................................33

Annex A (informative) Determination of the creep rate α ..........................................................................................................35

Annex B (informative) Determination of the load loss k .............................................................................................................36

Annex C (informative) Determination of the critical creep load P ...................................................................................37

Annex D (informative) Evaluation of the apparent tendon free length L ............................................................38

app

Annex E (informative) Yield stress and tensile strength for typical anchor steels ...........................................40

Bibliography .............................................................................................................................................................................................................................41

iv © ISO 2018 – All rights reserved
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SIST EN ISO 22477-5:2018
ISO 22477-5:2018(E)
Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards

bodies (ISO member bodies). The work of preparing International Standards is normally carried out

through ISO technical committees. Each member body interested in a subject for which a technical

committee has been established has the right to be represented on that committee. International

organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www .iso .org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and

expressions related to conformity assessment, as well as information about ISO's adherence to the

World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following

URL: www .iso .org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 182, Geotechnics.
A list of all the parts in the ISO 22477 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/members .html.
© ISO 2018 – All rights reserved v
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SIST EN ISO 22477-5:2018
ISO 22477-5:2018(E)
Introduction
This document, together with EN 1997-1 and EN 1537, form the trinity in which:

— EN 1997-1 defines the design requirements for grouted anchors, including the limits of proof load

and limiting criteria by testing of grouted anchors, which may be specified in the national annex (for

EN 1997-1) or a similar national application document for ISO countries;
— EN 1537 defines the execution of grouted anchors;
— this document defines the testing of grouted anchors.

The document has been structured so that common items are given in Clauses 1 to 7. The different test

specific loading procedures, measurements, checks and presentation of test results for the three test

methods (Test Method 1, 2 and 3) have been placed in three separate clauses. The determination of

the fundamental characteristics: creep rate, load loss, critical creep load and the apparent tendon free

length are not test specific and for this reason these have been placed in Annexes A to D.

Yield stress and tensile strength for typical anchor steels appear in Annex E.

Figures 1 and 2 illustrate the two main types of grouted anchors considered in EN 1537.

Key
1 anchorage point at jack during stressing
2 anchorage point at anchor head in service
3 tensioning element at anchor head (nut or barrel and wedge)
4 bearing plate
5 load transfer block
6 structural element
7 trumpet or anchor head tube
8 O-ring
9 soil/rock
10 borehole
11 debonding sleeve
12 tendon
13 fixed length grout body
14 free length filling where appropriate
Figure 1 — Sketch of a bond type ground anchor — details of anchor head and head
protection omitted
vi © ISO 2018 – All rights reserved
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SIST EN ISO 22477-5:2018
ISO 22477-5:2018(E)
Key
1 anchorage point at jack during stressing
2 anchorage point at anchor head in service
3 tensioning element at anchor head (nut or barrel and wedge)
4 bearing plate
5 load transfer block
6 structural element
7 trumpet or anchor head tube
8 O-ring
9 soil/rock
10 borehole
11 debonding sleeve
12 tendon
13 fixed length grout body
14 free length filling where appropriate
15 compression element

Figure 2 — Sketch of a compression type ground anchor — details of anchor head and head

protection omitted
© ISO 2018 – All rights reserved vii
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SIST EN ISO 22477-5:2018
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SIST EN ISO 22477-5:2018
INTERNATIONAL STANDARD ISO 22477-5:2018(E)
Geotechnical investigation and testing — Testing of
geotechnical structures —
Part 5:
Testing of grouted anchors
1 Scope

This document establishes specifications for the execution of tension tests to be carried out on an anchor

grouted in the ground, as defined in EN 1997-1 and EN 1537. Three methods of testing are recognized

by this document. Test Method 1 involves cyclic tension loading with measurement of displacement at

the load stages; Test Method 2 involves cyclic tension loading with measurement of load loss at the load

stages; and Test Method 3 involves step-loading with measurement of displacement under successive

maintained tension loads.

This document provides specifications for the experimental devices, the measurement apparatus, the

test procedures, the definition and presentation of the test results and the content of records.

NOTE This document does not provide specification for the size of the proof load and the limiting criteria.

These aspects reside in EN 1997-1 or its national annex for CEN countries and in similar national application

documents for this test standard for ISO countries.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

EN 1537:2013, Execution of special geotechnical works — Ground anchors
EN 1997-1:2004+A1: 2013, Eurocode 7: Geotechnical design — Part 1: General rules
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes
...

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