EN ISO 22477-4-2018 Geotechnical investigation and testing - Testing of geotechnical structures - Part 4 Testing of piles dynamic load testing.pdf

1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Geotechnical investigation and testing - Testing of geotechnical structuresPart 4: Testing of piles: dynamic load testingBS EN ISO 22477-4:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 22477-4 April 2018

2、ICS 93.020 English Version Geotechnical investigation and testing - Testing of geotechnical structures - Part 4: Testing of piles: dynamic load testing (ISO 22477-4:2018) Reconnaissance et essais gotechniques - Essais de structures gotechniques - Partie 4: Essais de pieux: essai de chargement dynami

3、que (ISO 22477-4:2018) Geotechnische Erkundung und Untersuchung - Prfung von geotechnischen Bauwerken und Bauwerksteilen - Teil 4: Pfahlprfungen: Dynamische Pfahlprobebelastung (ISO 22477-4:2018) This European Standard was approved by CEN on 24 February 2018. CEN members are bound to comply with the

4、 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

5、 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 a

6、s 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, Ne

7、therlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2

8、018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 22477-4:2018 ENational forewordThis British Standard is the UK implementation of EN ISO 22477-4:2018. It is identical to ISO 22477-4:2018.The UK participation in its preparati

9、on was entrusted to Technical Committee B/526/3, Site investigation and ground testing.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for

10、its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 91801 8ICS 93.020Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and

11、 Strategy Committee on 30 April 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 22477-4:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 22477-4 April 2018 ICS 93.020 English Version Geotechnical investigation and testing - Testing of geotec

12、hnical structures - Part 4: Testing of piles: dynamic load testing (ISO 22477-4:2018) Reconnaissance et essais gotechniques - Essais de structures gotechniques - Partie 4: Essais de pieux: essai de chargement dynamique (ISO 22477-4:2018) Geotechnische Erkundung und Untersuchung - Prfung von geotechn

13、ischen Bauwerken und Bauwerksteilen - Teil 4: Pfahlprfungen: Dynamische Pfahlprobebelastung (ISO 22477-4:2018) This European Standard was approved by CEN on 24 February 2018. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Euro

14、pean 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 version

15、s (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, Be

16、lgium, 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, Swed

17、en, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR 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 worldwide fo

18、r CEN national Members. Ref. No. EN ISO 22477-4:2018 EBS EN ISO 22477-4:2018EN ISO 22477-4:2018 (E) 3 European foreword This document (EN ISO 22477-4:2018) has been prepared by Technical Committee ISO/TC 182 “Geotechnics“ in collaboration with Technical Committee CEN/TC 341 “Geotechnical Investigati

19、on 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 October 2018, and conflicting national standards shall be withdrawn at the latest by Octobe

20、r 2018. 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 th

21、e 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, Netherl

22、ands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 22477-4:2018 has been approved by CEN as EN ISO 22477-4:2018 without any modification. BS EN ISO 22477-4:2018ISO 22477-4:2018(E)Foreword

23、ivIntroduction v1 Scope . 12 Normative references 23 Terms, definitions and symbols 23.1 Terms and definitions . 23.2 Symbols . 44 Testing equipment 44.1 General . 44.2 Loading 54.2.1 General 54.2.2 Loading by an impact driving system 64.2.3 Loading by a single or multiple blow drop mass . 64.3 Meas

24、urements . 64.3.1 General 64.3.2 Measurements for dynamic impact tests 74.3.3 Measurements and recordings required for pile driving formula or wave equation analysis . 85 Test procedure 95.1 Preparation for testing . 95.2 Safety requirements . 95.2.1 People and equipment in the surrounding area . 95

25、.2.2 Test pile . 105.3 Preparation of the pile . 105.4 Timing of tests 105.4.1 General. 105.4.2 Driving Continuous monitoring and end of initial driving test .105.4.3 Re-driving . 105.4.4 Bored or cast-in-situ piles . 116 Test results .116.1 Test results for dynamic load test with driving formula 11

26、6.2 Test results for dynamic load test with wave equation analysis .116.3 Test results for dynamic load test with measurements at the pile head 117 Test reporting .12Annex A (informative) Driving formula 14Annex B (informative) Wave equation analysis 17Annex C (informative) Examples of transducer at

27、tachment and pile extension details 27Annex D (informative) Evaluation by closed form solutions using empirical damping values 29Annex E (informative) Evaluation of the measurements by signal matching .36Annex F (informative) Multi-blow dynamic testing technique .44Bibliography .51 ISO 2018 All righ

28、ts reserved iiiContents PageBS EN ISO 22477-4:2018ISO 22477-4:2018(E)ForewordISO (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 technica

29、l 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 wit

30、h 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

31、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 r

32、ights. 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 i

33、n 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 ISOs adherence to the Wo

34、rld 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 the European Committee for Standardization (CEN) Technical Committee CEN/TC 341, Geotechnical investigation and testing, in collabo

35、ration with ISO Technical Committee TC 182, Geotechnics, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).A list of all parts in the ISO 22477 series can be found on the ISO website.iv ISO 2018 All rights reservedBS EN ISO 22477-4:2018ISO 22477-4:2018(

36、E)IntroductionThis document establishes the specifications for the execution of dynamic load tests in which a single pile is subject to an axial load in compression to measure strain, acceleration and displacement under dynamic loading and to allow an assessment of its compressive resistance. This d

37、ocument outlines how a dynamic load test is defined and specifies the equipment and testing procedures required. Informative non-prescriptive guidance is included on the analysis of dynamic load test results required to determine mobilized or ultimate measured compressive resistance of a pile. ISO 2

38、018 All rights reserved vBS EN ISO 22477-4:2018BS EN ISO 22477-4:2018Geotechnical investigation and testing Testing of geotechnical structures Part 4: Testing of piles: dynamic load testing1 ScopeThis document establishes the specifications for the execution of dynamic load tests in which a single p

39、ile is subject to an axial dynamic load in compression.This document outlines the methods of testing required to allow assessment of pile resistance to be determined from the following methods and procedures described in EN1997 -1: 2004+A1: 2013:a) dynamic impact testing determination of pile compre

40、ssive resistance by evaluation of measurements of strain and acceleration and or displacement at the pile head with respect to time;b) pile driving formulae evaluation of pile compressive resistance from blow counts and hammer energy during pile driving;c) wave equation analysis evaluation of pile c

41、ompressive resistance from blow counts by modelling of the pile, soil and driving equipment;d) multi-blow dynamic testing evaluation of pile compressive resistance from a series of blows designed to generate different levels of pile head displacement and velocity.This document is applicable to piles

42、 loaded axially in compression.This document is applicable to all pile types mentioned in EN 1536, EN 12699 and EN 14199.The tests considered in this document are limited to dynamic load tests on piles only.NOTE 1 ISO 22477-4 can be used in conjunction with EN1997 -1: 2004+A1: 2013. Numerical values

43、 of partial factors for limit states from pile load tests to be taken into account in design are provided in EN 1997-1. For design to EN 1997-1 the results from dynamic load tests will be considered equivalent to the measured compressive resistance Rc,mafter being subject to appropriate analysis.NOT

44、E 2 Guidance on analysis procedures for dynamic load testing results is given in Annexes A, B, D, E and F.This document provides specifications for:i) investigation tests, whereby a sacrificial pile is loaded up to ultimate limit state;ii) control tests, whereby the pile is loaded up to a specified

45、load in excess of the serviceability limit state.NOTE 3 Generally, an investigation test focuses on general knowledge of a pile type; a control test focuses on one specific application of a pile.INTERNATIONAL STANDARD ISO 22477-4:2018(E) ISO 2018 All rights reserved 1BS EN ISO 22477-4:2018ISO 22477-

46、4:2018(E)2 Normative referencesThe 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 (i

47、ncluding any amendments) applies.E N19 9 7 -1: 20 0 4 +A 1: 2013 , Eurocode 7: Geotechnical design Part 1: General rules3 Terms, definitions and symbols3.1 Terms and definitionsFor the purposes of this document, the terms and definitions in EN1997 -1: 2004+A1: 2013 and the following apply.ISO and IE

48、C maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at h t t p :/ www .electropedia .org/ ISO Online browsing platform: available at h t t p :/ www .iso .org/ obp 3.1.1trial pilepile installed before the commencement of the main pili

49、ng works or a specific part of the works for the purpose of investigating the suitability of the chosen type of pile and for confirming its design, dimensions and compressive resistanceNote 1 to entry: The trial pile might be sacrificed to achieve ultimate limit state.3.1.2working pilepile that will form part of the foundation of the structure3.1.3test pilepile to which loads are applied to determine the compressive resistance - deformation characteristics of the pile and the surrounding groundNote 1 to entry: A test pile can be a tr