EN 846-10-2000 en Methods of Test for Ancillary Components for Masonry - Part 10 Determination of Load Capacity and Load Deflection Characteristics of Brackets《圬工辅助砌块的试验方法 第10部分 托架.pdf

1、 STD-BSI BS EN Bib-LO-ENGL 2000 I lb2+bb9 085Li27L 3T3 W BRITISH STANDARD BS EN 846-10:2000 Methods of test for ancillary components for masonry - Part 10: Determination of load capacity and load deflection characteristics of brackets The European Standard EN 846102000 has the status of a British St

2、andard ICs 91.060.1 91.080.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITED BY COPYRIGHT LAW STD-BSI BS EN 84b-LO-ENGL 2000 Lb24bb9 0854292 23T E BS EN 846-10:2000 been prepared under the direction of the Sector Amd. No. Date Committee for Building and Civil Engineering, was published under t

3、he authority of the Standards Committee and comes into effect on 15 June 2000 O BSI W2000 ISBN O 580 34831 8 National foreword Comments This British Standard is the official English language version of EN 846-102000 which is included in a package of new European Standards being prepared by CENlrC 12

4、5 relating to ancillary components for masonry - ties, straps, hangers and brackets. Although the English language versions of these European Standards wiU be adopted as British Standards as they become available, the existing British Standards for brackets will be retained, but only until such time

5、 that the complete package of European Standards becomes available. Any residue) from British Standards affected by the package which need to be retained, will be drawn together to form a new BS. The original group of British Standards will then be withdrawn and this will be notified in Update Stu -

6、 present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; - monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be ob

7、tained on request to 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 “International Standards Correspondence Index“, or by using the “Find“

8、 facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include ali 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 o

9、bligations. Summary of pages This document comprises a front cover, an incide 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. STD-BSI BS EN 84b-LO-ENGL 2000 Lb24bb7 0

10、854273 17b EUROPEAN STANDARD EN 846-10 NORME EUROPENNE EUROPISCHE NORM February 2000 ICs 91.060.10; 91.080.30 English version Methods of test for ancillary components for masonry - Part IO: Determination of load capacity and load-deflection ch a racte ristics of brackets Mthodes dessai des composant

11、s accessoires de maonnerie - Partie IO: Dtermination de la rsistance et de la rigidit des consoles Prfverfahren fur Ergnzungsbauteile fr Mauerwerk - Teil 1 O: Bestimmung der Tragfhigkeit und der Last- Verformungseigenschaten von Konsolen This European Standard was approved by CEN on 4 December 1999.

12、 CEN members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving this Europsan Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning sich national standards may be obtained on

13、application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by trcnslation under the responsibility of a CEN member into its own language and notified to the Central Secretariat

14、has the same status as tie oficial versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMI

15、TTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR 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 worldwide for CEN national Members. _ Ref. No. EN 846-10:2000 E STL).BSI BS EN q

16、b-LU-ENGL ZOOU E Lb24Lb7 085Li279 O02 Page 2 EN 846-10:2000 Contents Page Foreword 3 1 Scope . 4 2 Normative references . 4 3 Principle . 4 4 Materials 4 5 Apparatus . 5 6 Test specimens . 5 7 Procedure . 7 8 Expression of results 7 9 Evaluation of results 7 10 Test report 8 Q BSI 06-2000 STD-BSI BS

17、 EN 4b-LO-ENGL 2000 m Lb24bb7 OSLi275 TLi7 Page 3 EN 846- 10:2000 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 a

18、n 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 CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Europ

19、ean 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 Comm

20、ission and the European Free Trade Association and supports the essential requirements of the EU Construction Products Directive (89/106/EEC) and includes the performance requirements referred to in the Eurocode for masonry structures. O BSI 06-2000 Page 4 EN 846- 10:2000 1 Scope This European Stand

21、ard specifies a method for determining the load capacity and load-deflection characteristics of brackets, used for the support of masonry, fixed to a backing wall or frame structure. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publi

22、cations. These 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 revisio

23、n. For undated references the latest edition of the publication referred to applies. prEN 772-1 Methods of test for masonry units - Part 1 : Determination of compressive strength. EN 772-10 Methods of test for masonry units - Part 10: Determination of moisture content of calcium silicate, and autocl

24、aved aerated concrete masonry units. prEN 845-1 Specification for ancillary components for masonry - Part 1: Ties, straps, hangers, brackets and support angles. 3 Principle Specimen brackets are attached to a suitable backing material and subjected to vertically applied loads. Provision is made to d

25、etermine strength, deflection and recovery. 4 Materials 4.1 Masonry backing walls Masonry used to construct backing walls shall be as specified. 4.2 Concrete backing walls Concrete used to construct backing walls may be cast in-situ or precast elements as specified. 4.3 Steel frame or stud elements

26、Representative sections of metal fiame or stud elements shall be used as specified. 4.4 Screws, nails, grouts, plugs, slot sections or other fixing ancillary items Fixing materials shall be normal production items, in a clean dry uncontaminated state, supplied by the manufacturer or supplier for use

27、 with the product. 8 BSI 06-2000 STD-BSI BS EN Bqb-LO-ENGL 2000 E Lb24hbS 0854277 ALL E Page 5 EN 846- 10:2000 5 Apparatus 5.1 Reaction frames, or other methods of preventing undue movementhotation of the backing material. 5.2 Dial gauges or electrical linear displacement transducers, to measure mov

28、ement of bracket relative to backing material accurate to 0,Ol mm. 5.3 Test machine, or apparatus capable of applying the load without distortion such that the maximum load reading occurs above 20 % of the full scale reading. The load shall be measured using a load cell device having a digital or an

29、alogue readout with a resolution of 2 % of the full scale reading or better. The system shall apply an axial force to the specimen. Where the load is to be applied using weights this should be without shock, and each increment in load and the failure load shall be measured to an accuracy ofk2 %. 6 T

30、est specimens 6.1 Sampling The method of sampling shall be in accordance with prEN 845- 1. The minimum number of specimens shall be five. Prior to fixing the brackets, all relevant dimensions and thicknesses shall be measured. 6.2 Construction and storage Test walls shall be built with masonry units

31、 representative of the types for which the manufacturer claims that the bracket to be tested are intended. Fix the bracket in accordance with the manufacturers instructions for the type being tested. Determine the compressive strength of a sample of the masonry units using the method given in prEN 7

32、72- 1. The conditioning of masonry units shall as specified. Measure the moisture content by mass of autoclaved aerated concrete and calcium silicate masonry units in accordance with EN 772-10. For other types of masonry unit record the method of conditioning the units prior to laying. Record the ag

33、e of non-autoclaved concrete units at the time of testing the masonry specimens. Build the walls on a flat horizontal surface. Strike off the mortar flush with the faces of the specimen. Normal masonry mortar joints shall be between 8 mm and 15 mm thick. Thin layer mortar joints shall be between 1 m

34、m and 3 mm thick. Take appropriate steps to prevent the test specimen from drying out during the first 3 d after construction, e.g. by covering with polyethylene sheets, and then leave uncovered in a laboratory environment until tested. Unless otherwise specified, leave to cure for at least 28 d bef

35、ore testing. Concrete backing walls shall be supported in a vertical position; other elements, e.g. floor slabs, shall be oriented as they would in a building. Fix the brackets in accordance with the manufacturers instructions for the type being tested using fixings/fastenings of the size and type s

36、pecified by the manufacturer. Q BSI 06-2000 STD.BSI BS EN 84b-LO-ENGL 2000 Lb24bbS 0854278 758 D Page 6 EN 846-10:2000 X u4 u4 u4 u4 TT-i- Y X Y Z a b e T L W C Dimensions in millimetres b Z / Face of plain bracket Face of bracket with strengthening gusset Elevation showing disposition of load Brack

37、et Backing material, e.g. concrete, masonry, etc. Designated cavity width Deflection gauge or transducer Thickness of the masonry Length of the bracket Applied load W I Figure 1 - Typical specimen layout and loading configuration O BSI 06-2000 STD-BSI BS EN B9b-LO-ENGL 2000 E lb29bb7 0859277 L79 Pag

38、e 7 EN 846- 10:2000 6.3 Loading geometry When testing, a series of point loads, equal in total to the required distributed load, may be employed. For brackets intended to be used only with a single fixing, the resultant load shall be applied in line with the fixing. The load shall be applied on the

39、centre line of area of the bracket on which the masonry is designed to be supported. Note: Suitable loading arrangements are shown in Figure 1. 6.4 Deflection monitoring Vertical deflections shall be monitored at 1 O mm I 0,5 mm from the free edge of the bracket or support angle and under load point

40、s along the length as shown in Figure 1. Additionally the fixing shall be monitored and failures due to pull-out of fixings shall be reported in the test report. 7 Procedure 7.1 Loading Apply a preload of 1 kN to the test specimen and hold for a period of 1 min. Remove the load and proceed as follow

41、s. Apply load continuously or in not less than six increments up to the maximum expected test load. Use any convenient loading rate such that failure occurs at between 15 min and 30 min after commencing the test. Apply load until either failure occurs, defined as: - the load at which further deflect

42、ion occurs without increase in test load; or - to a deflection of 10 mm when the load corresponding to that deflection shall be taken to be the failure load. Record the load-deflection data, the failure load and the mode of failure. 8 Expression of results Record the failure load of each specimen, t

43、o the nearest 10 N, and note any visible signs of distress in specimen, fixings or supporting member at all stages of the test. 9 Evaluation of results Calculate the load capacity as the mean failure load and express it to the nearest 10 N. O BSI 06-2000 Page 8 EN 846-10:2000 10 Test report Test rep

44、orts shall include the following information: a) the number, title and date of issue of this European Standard; b) name of test laboratory; c) description of the bracket to the relevant European Standard prEN 845-1 including material and dimensions; d) type, size and position of fixings and manufact

45、urer?s reference; e) a description of the supporting member including a specification for concrete, steel, or masonry units and mortar used, to the relevant European Standards; I) age of non-autoclaved concrete units at the time of testing the masonry; g) moisture content by mass of autoclaved aerat

46、ed concrete and calcium silicate units or, for other types of unit, the method of conditioning prior to the time of laying; h) a description of the method and location of fixing the bracket; i) the date of load testing the specimens; j) loading arrangement and positions at which deflection was monit

47、ored; k) a graph giving the load-deflection curve for each individual specimen in the test; 1) individual values of the load capacity, to the nearest 1 O N; m) the mode of failure of each individua1 specimen; n) the mean value of the load capacity to the nearest 10 N. O BSI 06-2000 BS EN 846-10:2000

48、 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the intemational level. It is incorporated by Royal Charter. Revisions British Standar

49、ds are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quaty of our products and services. We would be grateful if anyone nding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel 020 8996 9ooo. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures tha