1、March 2017 English price group 20No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.080.20; 93.020!%bo#“2637600www.
2、din.deDIN EN ISO 18674-2Geotechnical investigation and testing Geotechnical monitoring by field instrumentation Part 2: Measurement of displacements along a line: Extensometers (ISO 186742:2016);English version EN ISO 186742:2016,English translation of DIN EN ISO 18674-2:2017-03Geotechnische Erkundu
3、ng und Untersuchung Geotechnische Messungen Teil 2: Verschiebungsmessungen entlang einer Messlinie: Extensometer (ISO 186742:2016);Englische Fassung EN ISO 186742:2016,Englische bersetzung von DIN EN ISO 18674-2:2017-03Reconnaissance et essais gotechniques Mesures gotechniques Partie 2: Mesure de dp
4、lacement le long dune ligne par extensomtre (ISO 186742:2016);Version anglaise EN ISO 186742:2016,Traduction anglaise de DIN EN ISO 18674-2:2017-03SupersedesDIN 41072:201103www.beuth.deDocument comprises 54 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall
5、be considered authoritative.03.17 DIN EN ISO 18674-2:2017-03 2 A comma is used as the decimal marker. National foreword This document (EN ISO 18674-2:2016) has been prepared by Technical Committee ISO/TC 182 “Geotechnics” in collaboration with Technical Committee CEN/TC 341 “Geotechnical investigati
6、on and testing” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was DIN-Normenausschuss Bauwesen (DIN Standards Committee Building and Civil Engineering), Working Committee NA 005-05-09 AA Baugrund; Feldversuche (SpA zu CEN/TC 341/WG 1, WG 2, WG 3, WG 5 un
7、d ISO/TC 182/SC 182/WG 2). The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 18674-1 DIN EN ISO 18674-1 ISO 18674-3 DIN EN ISO 18674-3 ISO 22475-1 DIN EN ISO 22475-1 ISO 22476-1 DIN EN ISO 22476-1 ISO 22476-2 DIN EN ISO 22476-2 Amendments
8、 This standard differs from DIN 4107-2:2011-03 as follows: a) the content of the national standard has been adopted in full; b) the standard has been editorially revised. Previous editions DIN 4107: 1937-02, 1969-07, 1978-01 DIN 4107-2: 2011-03 DIN EN ISO 18674-2:2017-03 3 National Annex NA (informa
9、tive) Bibliography DIN EN ISO 18674-1, Geotechnical investigation and testing Geotechnical monitoring by field instrumentation Part 1: General rules DIN EN ISO 18674-3, Geotechnical investigation and testing Geotechnical monitoring by field instrumentation Part 3: Measurement of displacements across
10、 a line: Inclinometers*)DIN EN ISO 22475-1, Geotechnical investigation and testing Sampling methods and groundwater measurements Part 1: Technical principles for execution DIN EN ISO 22476-1, Geotechnical investigation and testing Field testing Part 1: Electrical cone and piezocone penetration test
11、DIN EN ISO 22476-2, Geotechnical investigation and testing Field testing Part 2: Dynamic probing *)Currently under preparation. DIN EN ISO 18674-2:2017-03 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 18674-2 November 2016 ICS 13.080.20; 93.020 English V
12、ersion Geotechnical investigation and testing - Geotechnical monitoring by field instrumentation - Part 2: Measurement of displacements along a line: Extensometers(ISO 18674-2:2016) Reconnaissance et essais gotechniques - Mesures gotechniques - Partie 2: Mesure de dplacement le long dune ligne par e
13、xtensomtre (ISO 18674-2:2016)Geotechnische Erkundung und Untersuchung - Geotechnische Messungen - Teil 2: Verschiebungsmessungen entlang einer Messlinie: Extensometer (ISO 18674-2:2016) This European Standard was approved by CEN on 11 September 2016. CEN members are bound to comply with the CEN/CENE
14、LEC 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 o
15、r 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 off
16、icial 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
17、, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of
18、exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 18674-2:2016 EEuropean foreword 31 Scope . 52 Normative references 53 Terms and definitions . 54 Symbols 75 Instruments . 85.1 General . 85.2 In-place extensometer . 125.2.1 Measuring points 125.2.
19、2 Connecting elements . 125.2.3 Measuring head and read-out device 135.3 Probe extensometer 145.3.1 Measuring points and guide tube .145.3.2 Probe . 155.5 Tape extensometer (convergence tape) . 165.6 Measuring range and accuracy 166 Installation and measuring procedures 176.1 Installation . 176.1.1
20、Surface components .176.1.2 Installation in boreholes and in fill .176.1.3 In-place extensometer .186.1.4 Probe extensometer .186.1.5 Tape extensometer 196.2 Carrying out the measurement 196.2.1 Instrumentation check and calibration .196.2.2 Measurement .197 Data processing and evaluation .198 Repor
21、ting .208.1 Installation report . 208.2 Monitoring report 20Annex A (normative) Measuring and evaluation procedure 21Annex B (informative) Backfill materials .30Annex C (informative) Geo-engineering applications .31Annex D (informative) Measuring examples .32Bibliography .50Contents PageDIN EN ISO 1
22、8674-2:2017-03 EN ISO 18674-2:2016 (E) 2Foreword .4European foreword This document (EN ISO 18674-2:2016) 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
23、 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 2017, and conflicting national standards shall be withdrawn at the latest by May 2017. Attention is drawn to the possibility that some of
24、the elements of this document may be the subject of patent rights. CEN and/or CENELEC 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
25、 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, Slo
26、vakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 18674-2:2016 has been approved by CEN as EN ISO 18674-2:2016 without any modification. DIN EN ISO 18674-2:2017-03 EN ISO 18674-2:2016 (E)3 ForewordISO (the International Organization for St
27、andardization) 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 rig
28、ht 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
29、 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 rul
30、es 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 identi
31、fied 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
32、 the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs 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.The committee responsible fo
33、r this document is ISO/TC 182, Geotechnics.A list of all part in the ISO 18674 series, published under the general title Geotechnical investigation and testing Geotechnical monitoring by field instrumentation, can be found on the ISO website.DIN EN ISO 18674-2:2017-03 EN ISO 18674-2:2016 (E) 4 1 Sco
34、peThis document specifies the measurement of displacements along a line by means of extensometers carried out for geotechnical monitoring. General rules of performance monitoring of the ground, of structures interacting with the ground, of geotechnical fills and of geotechnical works are presented i
35、n ISO 18674-1.If applied in conjunction with ISO 18674-3, this document allows the determination of displacements acting in any direction.This document is applicable to: monitoring the behaviour of soils, fills and rocks; checking geotechnical designs in connection with the Observational Design proc
36、edure; deriving geotechnical key parameters (e.g. from results of pile load tests or trial tunnelling); evaluating stability ahead of, during or after construction (e.g. stability of natural slopes, slope cuts, embankments, excavation walls, foundations, dams, refuse dumps, tunnels).NOTE This docume
37、nt fulfils the requirements for the performance monitoring of the ground, of structures interacting with the ground and of geotechnical works by the means of extensometers as part of the geotechnical investigation and testing in accordance with References 5 and 6.2 Normative referencesThe following
38、documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 18674-1:2015, Geot
39、echnical investigation and testing Geotechnical monitoring by field instrumentation Part 1: General rules3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 18674-1 and the following apply.3.1extensometer field instrument for monitoring changes of distanc
40、e between two or more measuring points located along a measuring lineNote 1 to entry: Monitoring of such changes allows the determination of displacements of measuring points acting in the direction of the measuring line.DIN EN ISO 18674-2:2017-03 EN ISO 18674-2:2016 (E)5 Note 2 to entry: At a measu
41、ring point, the movements of the medium (e.g. soil, rock, concrete and steel structures) being investigated are transferred to the measuring point by devices such as anchors, rings or bolts (see 5.1.6).Note 3 to entry: In the ground, the measuring points are typically installed in boreholes. The mea
42、suring line then coincides with the axis of the borehole.3.2in-place extensometerpermanently installed extensometer, essentially consisting of anchor(s), connecting element(s) and at least one measuring headNote 1 to entry: Each connecting element is affixed to an anchor and free to move along the m
43、easuring line.Note 2 to entry: Measuring heads are commonly located at one end of the measuring line. When carrying out the measurements, they function as reference measuring points.Note 3 to entry: For in-place extensometers in boreholes, see Reference 7.Note 4 to entry: See Figure 1.3.3rod extenso
44、meterin-place extensometer where the connecting element is a rodNote 1 to entry: Common rod materials are steel or fibreglass.Note 2 to entry: See Figure 1 a).3.4wire extensometerin-place extensometer where the connecting element is a wireNote 1 to entry: See Figure 1 b).3.5single extensometerin-pla
45、ce extensometer with one anchor onlyNote 1 to entry: See Figure 1 b).3.6multiple-point extensometerin-place extensometer with more than one anchorNote 1 to entry: Up to six anchor points are common in geo-engineering practice.Note 2 to entry: See Figure 1 a).3.7chain extensometerin-place extensomete
46、r formed of a series of single extensometer elementsNote 1 to entry: See Figure 1 c).3.8probe extensometerextensometer where the connecting element is a moveable unitNote 1 to entry: Probe extensometers can be developed as single-point probe extensometer (3.9) or double-point probe extensometer (3.1
47、0).Note 2 to entry: See Figure 2.DIN EN ISO 18674-2:2017-03 EN ISO 18674-2:2016 (E) 6 3.9single-point probe extensometerextensometer, essentially consisting of a measuring probe and a guiding tube with measuring marks and in which, at the measuring position, only one measuring mark interacts with th
48、e probeNote 1 to entry: The connecting element is the unit consisting of a measuring cable and a probe. The measured value is the distance between the measuring mark and the reference mark at the head of the guiding tube.Note 2 to entry: Because of its design, function and usual geotechnical application, the single-point probe extensometer is commonly designated as a “magnetic extensometer,” a “magnet settlement probe” or
