1、BRITISH STANDARD Methods of test for ancillary components for masonry - Part 3: Determination of shear load capacity of welds in prefabricated bed joint reinforcement The European Standard EN 846-32000 has the status of a Briish Standard ICs 91.080.30 BS EN 846-32000 NO COPYING Wi“0UT BSI PERMISSION
2、 EXCEPT As PERMIITED BY COPYRIGm LAW STDmBSI BS EN 4b-1-ENGL 2000 = Lb21ibb7 085Li022 054 BS EN 8463:2m This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engjneering, was pubiished under the authority of the Standards Committee and comes i
3、nto efect on 16 June 2000 Q BSI 062000 ISBN O 580 34886 7 National foreword This British Standard is the official English language version of EN 8463:2OOO, which is included in a package of new European Standards being prepared by CENDC 125 relating to ancillary components for masonry - bed joint re
4、inforcement. No British Standard is being superseded The UK participation in its preparation was entrusted by Technical Committee M19, Masonry and associated testing, to Subcommittee M19/3, Ancillary components, which has the responsibility to: - aid enquirem to understand the tea - present to the r
5、esponsible European committee any enquiries on the - monitor related international and European developments and promulgate interpretation, or proposals for change, and keep the UK interests informed; them in the UK A list of oanizations represented on this subcommittee can be obtained on request to
6、 its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled riitemational Standards Correspondence Index“, or by using the “Find“ facility of the BSI
7、Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of
8、 pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright notice displayed by this document indicates when the document was last issued. Amendments issued since publication I comments AmdNo. Date STD
9、OBSI BS EN 8Lib-3-ENGL 2000 Lb24bb9 0854023 T90 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 8463 February 2000 ICs 91.060.10; 91.080.30 English version Methods of test for ancillary components for masonry - Part 3: Determination of shear load capacity of welds in prefabricated bed joint rei
10、nforcement MBthodes dessai des composants accessoires de maonnerie - Partie 3: Dtermination de la rsistance au cisaillement des soudures dans larmature du joint dassise Prfverfahren fr Ergnzungsbauteile fr Mauerwerk - Teil 3: Bestimmung der Schubtragfhigkeit der Schweistellen in vorgefertigter Lager
11、fugenbewehrung This European Standard was approved by CEN on 4 December 1999. CEN members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving this Europran Standard the status of a national standard without any alteration. Up-to-date lists and bibl
12、iographical references concerning sich national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three oficial versions (English, French, German). A version in any other language made by traislation under the responsibility of
13、 a CEN member into its own language and notified to the Central Secretariat has the same status as he official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Nor
14、way, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FUR NORMUNG Central Secretariat: rue de Stassart, 36 8-1050 Brussels O 2000 CEN All rights of exploitation in any form and by any means reserved wor
15、ldwide for CEN national Members. Ref. No. EN 846-3:2000 E STD.BSI BS EN Bqb-3-ENGL 2000 9 Lb2qbb7 0854024 727 Page 2 EN 846-3 :ZOO0 Contents Page Foreword - 3 1 Scope .- 4 2 Normative references 4 3 Principle .-. 4 4 Apparatus .- . 4 5 Preparation of test specimens .- 6 6 Procedure . 7 7 Expression
16、of results . 8 8 Test report .- 8 O BSI 06-2000 Page 3 EN 846-32000 Foreword This European Standard has been prepared by Technical Committee CEN/TC 125, Masonry, the Secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of
17、 an identical text or by endorsement, at the latest by August 2000, and conflicting national standards shall be withdrawn at the latest by September 2000. According to the CENCENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Eur
18、opean Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. This European Standard has been prepared under a mandate given to CEN by the European Co
19、mmission and the European Free Trade Association and supports the essential requirements of the EU Construction Products Directive (89/1 O/EEC) and includes the performance requirements referred to in the Eurocode for masonry structures. Q BSI 06-2000 STDeBSI BS EN 8qb-3-ENGL 2000 M Lb24bb7 085402b
20、7TT Page 4 EN 846-3 :2000 1 Scope This European Standard specifies a method for determining the shear strength of the welds in prefabricated bed j oint reinforcement. 2 Normative references This European Standard incorporates by dated or undated reference, provisions fi-om other publications. These
21、normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated
22、references the latest edition of the publication referred to applies. prEN 845-3 Specification for ancillary components for masonry - Part 1 : Bed joint reinforcement. 3 Principle Samples of the welds in truss type prefabricated bed joint reinforcement are straightened (see Figure 2) and tested in a
23、 normal tensile test machine. Samples of the welds in ladder type reinforcement are held in a special clamp at one end and then tested in a normal tensile test machine. 4 Apparatus 4.1 Clamp, for ladder type welds that holds the specimen such that the cross wire is totally supported and prevented fr
24、om turning or bending. Note: A typical form of such a clamp is shown in Figure 1. 4.2 Test system, with a suitable load capacity. The load shall be measured using a device having a maximum error of 2 % of the full scale reading. The read-out shall be such that the maximum load reading or the reading
25、 at a specimen displacement of O, 1 111111, whichever is the lesser, occurs above 20 % of the full scale reading. 8 BSI 06-2000 STDOBSI BS EN BLib-3-ENGL 2000 LbZLibbS 085LI027 b3b Page 5 EN 846-3:2000 I Section A-A 1 Wire in tension 2 Anchored wire 3 Adapter for attachment to testing machine loadin
26、g system 4 Upper clamp 5 Lower clamp 6 Wirechuck Figure 1 - Test arrangement for ladder type weld specimens O BSI 06-2000 STDOBSI BS EN 84b-3-ENGL 2000 Lb24bb9 0854028 572 M Page 6 EN 846-32000 5 Preparation of test specimens 5.1 Sampling The cutting pattern should produce specimens suitable for cla
27、mping and applying longitudinal shear stress at or near the weld. At least five specimens shall be tested. 5.2 Test sample for truss type bed joint reinforcement A length of bed joint reinforcement shall be cut fiom both sides of the weld as shown in Figure 2. On one side of the weld the longitudina
28、l wire shall be cut away and on the other side the cross wire shall be cut away. The remaining cross wire shall then be straightened till it becomes almost the prolongation of the remaining longitudinal wire. 5.3 Test sample for ladder type bed joint reinforcement A length of bed joint reinforcement
29、 shall be cut fiom either side of a weld and the cross wire shall be cut as shown in Figure 3. 1 I I * b) Note: X= 150 mm (recommended). Key cut Bend Intermediate specimen Resultant specimen Figure 2 - Test specimen for truss type weld 8 BSI 06-2000 STD-BSI BS EN Bqb-3-ENGL 2000 Lb24bb7 085V027 qO7
30、l .1.- - I fi fY j Page 7 EN 846-3 2000 1 1 I. 1 I In n in ri I I I 1 Note: X = 180 mm and Y = 30 mm (recommended). 1 cut a) Resultant specimen Figure 3 - Test specimen for ladder type weld 6 Procedure 6.1 Setting the specimen in the test machine Fix truss type weld specimens in the jaws of the tens
31、ile test machine so that it will apply the load axially. Fix the clamp holding the specimen of ladder type weld in one jaw of the tensile test machine and the other end of the specimen in the other jaw. 6.2 Test environment Carry out test under normal laboratory conditions. 6.3 Loading Apply load at
32、 a uniform rate such that the specimen fails at i ,5 min -t 0,5 min from the commencement of load application. Record the load capacity of the weld to the nearest 50 N. O BSI 06-2000 STD.BS1 BS EN 8Lib-3-ENGL 2000 I 1b24bb9 085ii030 120 Page 8 EN 846-3 12000 7 Expression of results Calculate the mea
33、n shear load capacity as the arithmetic mean of the individual test results, to the nearest 50 N. 8 Test report The test report shall include the following information: a) the number, title and date of issue of this European Standard; b) the description of the bed joint reinforcement, to the relevan
34、t standard prEN 845-3; c) the name of the laboratory; d) the date of testing the specimens; e) the shear load capacity of each weld, to the nearest 50N; r the mean shear load capacity of the welds, to the nearest 50 N; g) remarks, if any. 8 BSI 06-2000 _ STD-BSI BS EN 811b-3-ENGL 2000 m LbZrlbb 0851
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