BS EN 13381-6-2012 Test methods for determining the contribution to the fire resistance of structural members Applied protection to concrete filled hollow steel columns《测定结构构件耐火作用的.pdf

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1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationTest methods for determining the contribution to the fire resistance of structural membersPart 6: Applied protection to concrete filled hollow steel columnsBS EN 13381-6:2012Nati

2、onal forewordThis British Standard is the UK implementation of EN 13381-6:2012. It supersedes DD ENV 13381-6:2002 which is withdrawn.The UK participation in its preparation was entrusted by Technical CommitteeFSH/22, Fire resistance tests, to Panel FSH/22/-/12, Fire resistance tests ForProtection Sy

3、stems.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Sta

4、ndards Limited 2012ISBN 978 0 580 76351 9ICS 13.220.50; 91.060.01Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 July 2012.Amendments issued since publicationAm

5、d. No. Date Text affectedBRITISH STANDARDBS EN 13381-6:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13381-6 June 2012 ICS 13.220.50 Supersedes ENV 13381-6:2002English Version Test methods for determining the contribution to the fire resistance of structural members - Part 6: Applied prot

6、ection to concrete filled hollow steel columns Mthodes dessai pour dterminer la contribution la rsistance au feu des lments de construction - Partie 6: Protection applique aux poteaux mtalliques creux remplis de bton Prfverfahren zur Bestimmung des Beitrages zum Feuerwiderstand von tragenden Bauteil

7、en - Teil 6: Brandschutzmanahmen fr betonverfllte Stahlverbund-Hohlsttzen This European Standard was approved by CEN on 14 April 2012. 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 s

8、tandard 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 i

9、n 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

10、Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMI

11、T EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13381-6:2012: EBS EN 13381-6:2012EN 13381-6:2012 (E) 2 Contents Pag

12、e Foreword 41 Scope 62 Normative references 83 Terms and definitions, symbols and units 84 Test equipment . 104.1 General . 104.2 Furnace 105 Test conditions . 105.1 General . 105.2 Support conditions 115.3 Number of test specimens . 115.4 Size of test specimens . 115.5 Construction of steel test sp

13、ecimens . 115.5.1 Short and tall concrete filled hollow columns . 115.5.2 Application of the fire protection material . 115.6 Composition of test specimen component materials . 115.6.1 Steel specification 115.6.2 Concrete grade 125.6.3 Dry sand . 125.7 Properties of test specimen component materials

14、 . 125.7.1 Fire protection materials - General . 125.7.2 Fire protection materials - Thickness of applied reactive protection material 125.8 Selection of test specimens - Principle of selection . 126 Installation of the test specimens . 136.1 Test specimen installation patterns 136.2 Furnace Load 13

15、6.3 Specimen mounting 137 Conditioning of the test specimens 138 Application of instrumentation 148.1 General . 148.2 Instrumentation for measurement and control of furnace temperature . 148.2.1 General . 148.2.2 Furnace temperature in the region of test specimens 148.2.3 Instrumentation for the mea

16、surement of steel temperatures 148.3 Instrumentation for the measurement of pressure . 149 Test procedure 149.1 General . 149.2 Furnace temperature and pressure 149.3 Temperature of steelwork 159.4 Observations . 159.5 Termination of test 1510 Test results 1510.1 Acceptability of test results . 1510

17、.2 Presentation of test results in the test report 1511 Assessment . 1611.1 General . 16BS EN 13381-6:2012EN 13381-6:2012 (E) 3 11.2 Assessment procedure for thermal performance 1612 Report of the assessment. 1613 Limits of the applicability of the results of the assessment . 1713.1 General . 1713.2

18、 Permitted fire protection thickness range 1713.3 Permitted minimum wall thickness . 1713.4 Permitted maximum wall thickness . 1713.5 Permitted minimum diameter . 1713.6 Permitted maximum diameter 17Annex A (normative) Linear interpolation analysis 21Annex B (normative) Application, assumptions and

19、limitations of this European Standard 23B.1 Structural contribution from the concrete core . 23B.2 Stickability correction . 23B.3 Thermal analysis of circular and rectangular concrete filled hollow sections . 23Bibliography 24BS EN 13381-6:2012EN 13381-6:2012 (E) 4 Foreword This document (EN 13381-

20、6:2012) has been prepared by Technical Committee CEN/TC 127 “Fire safety in buildings”, 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 December 2012, and

21、conflicting national standards shall be withdrawn at the latest by December 2012. Attention is drawn to the possibility that some of 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. This

22、 document supersedes ENV 13381-6:2002. ENV 13381-6:2002 has been revised and a completely new document, EN 13381-6, has been prepared. The main differences are as follows: a) Loaded column omitted, since this European Standard provides thermal data only; b) Unfilled sections are required to be teste

23、d under EN 13381-8 or ENV 13381-4; c) The use of a specified dry sand infill to the sections may be used as an alternative to concrete; d) Thermocouple positions redefined to follow the requirements of EN 13381-8 or ENV 13381-4; e) New matrix of test sections included based on scope required rather

24、than prescriptive testing; f) Method to correct data for stickability added; g) Method of analysing the thermal data simplified to a method using linear interpolation; h) Extension of the results of testing added. This European Standard is compatible with prEN 13381-4 (revision of ENV 13381-4:2002)

25、and prEN 13381-8 (revision of EN 13381-8:2010). This European Standard is one of a series of standards for evaluating the contribution to the fire resistance of structural members by applied fire protection materials. The other parts of this series are: Part 1: Horizontal protective membranes. Part

26、2: Vertical protective membranes. Part 3: Applied protection to concrete members. Part 4: Applied protection to steel members. Part 5: Applied protection to concrete/profiled sheet steel and composite members. Part 7: Applied protection to timber members. Part 8: Applied reactive protection to steel

27、 members. BS EN 13381-6:2012EN 13381-6:2012 (E) 5 Caution The attention of all persons concerned with managing and carrying out this fire resistance test is drawn to the fact that fire testing can be hazardous and that there is a possibility that toxic and/or harmful smoke and gases will be produced

28、 during the test. Mechanical and operational hazards can also arise during the construction of test elements or structures, their testing and the disposal of test residues. An assessment of all potential hazards and risks to health should be made and safety precautions should be identified and provi

29、ded. Written safety instructions should be issued. Appropriate training should be given to relevant personnel. Laboratory personnel should ensure that they follow written safety instructions at all times. The specific health and safety instructions contained within this European Standard should be f

30、ollowed. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard:

31、Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the Unit

32、ed Kingdom. BS EN 13381-6:2012EN 13381-6:2012 (E) 6 1 Scope This European Standard specifies a test method for determining the contribution of fire protection systems to the fire resistance of structural concrete filled hollow steel columns. The concrete can be lightweight, normal-weight or heavywei

33、ght concrete, and of all the strength classes provided for in EN 1994-1-2. The use of a dry sand is considered to be an alternative, conservative approach to the use of wet concrete. A specification for dry sand is given in 5.6.3. The method is applicable to all fire protection systems used for the

34、protection of concrete filled hollow columns and includes sprayed fire protection, reactive coatings, cladding protection systems and multi-layer or composite fire protection materials. If there is no hollow section data from prEN 13381-4 (revision of ENV 13381-4:2002) or prEN 13381-8 (revision of E

35、N 13381-8:2010), this European Standard cannot be used. For passive systems, this data can be derived using the Formula in Annex A of prEN 13381-4 (revision of ENV 13381-4:2002). Testing to this European Standard is not required if the fire protection thicknesses for hollow sections derived from prE

36、N 13381-4 (revision of ENV 13381-4:2002) or prEN 13381-8 (revision of EN 13381-8:2010) are to be used for concrete filled hollow sections. The evaluation is designed to cover a range of thicknesses of the applied fire protection material, a range of steel sections, characterized by their diameters a

37、nd wall thicknesses, a range of design temperatures and a range of valid fire protection classification periods. The test method is applicable to fire protection systems which are intimately in contact with the structural column, or which include an airspace between the structural column and the pro

38、tection system. This European Standard specifies the fire tests which are carried out to determine the ability of the fire protection system to provide fire protection to composite columns. The tests produce data on the average steel temperatures of the composite column, when exposed to the time/tem

39、perature curve according to the procedures defined herein. This European Standard also provides the assessment procedure, which prescribes how the analysis of the test data should be made and gives guidance on the procedures by which interpolation is undertaken. In special circumstances, where speci

40、fied in national building regulations, there can be a need to subject reactive protection material to a smouldering curve. The test for this and the special circumstances for its use are detailed in prEN 13381-8 (revision of EN 13381-8:2010). This exposure, applicable to reactive fire protection mat

41、erials, is used only in special circumstances (which are specified in the national building regulations of a member state of the European Union) and is therefore not intended to be mandatory for all fire protection materials applied to concrete filled hollow steel columns. This European Standard ign

42、ores any contribution from the concrete to the structural capability of the hollow column and therefore only deals with thermal performance. The justification for using this approach is given in Annex B. The fire test methodology makes provision for the collection and presentation of data which can

43、be used as direct input to the calculation of fire resistance of concrete/steel composite members in accordance with the procedures given in EN 1994-1-2. The limits of applicability of the results of the assessment arising from the fire test are defined together with permitted direct application of

44、the results to different steel/concrete composite columns, steel types and thicknesses, concrete densities, strengths, thicknesses and production techniques over the range of thicknesses of the applied fire protection system tested. BS EN 13381-6:2012EN 13381-6:2012 (E) 7 This European Standard deta

45、ils the fire test procedures, which should be carried out to provide data on the thermal characteristics of the fire protection system, when exposed to the European Standard temperature/time curve specified in EN 1363-1. BS EN 13381-6:2012EN 13381-6:2012 (E) 8 The assessment procedure is used to est

46、ablish: a) on the basis of temperature data derived from testing concrete filled unloaded tall columns and reference columns, a correction factor and any practical constraints on the use of the fire protection system under fire test conditions, (the physical performance); b) on the basis of the temp

47、erature data derived from testing short hollow steel sections filled with concrete, the thermal properties of the fire protection system, (the thermal performance). The limits of applicability of the results of the assessment arising from the fire test are defined, together with permitted direct app

48、lication of the results to different steel sections and grades and to the fire protection system. 2 Normative references The following 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 a

49、pplies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 206-1, Concrete Part 1: Specification, performance, production and conformity EN 1992-1-1 Eurocode 2: Design of concrete structures Part 1-1: General rules and rules for buildings EN 1363-1:2012, Fire resistance tests Part 1: General requirements EN 10025-1, Hot rolled products of structural steels Part 1