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1、BRITISH STANDARD BS EN 1996-2:2006 Eurocode 6 Design of masonry structures Part 2: Design considerations, selection of materials and execution of masonry The European Standard EN 1996-2:2006 has the status of a British Standard ICS 91.010.30; 91.080.30 ? BS EN 1996-2:2006 This British Standard was p
2、ublished under the authority of the Standards Policy and Strategy Committee on 15 February 2006 BSI 15 February 2006 ISBN 0 580 47822 X National foreword This British Standard is the official English language version of EN 1996-2:2006. It supersedes DD ENV 1996-2:2001 which is withdrawn. The structu
3、ral Eurocodes are divided into packages by grouping Eurocodes for each of the main materials, concrete, steel, composite concrete and steel, timber, masonry and aluminium. This is to enable a common date of withdrawal (DOW) for all the relevant parts that are needed for a particular design. The conf
4、licting national standards will be withdrawn at the end of the co-existence period, after all the EN Eurocodes of a package are available. Following publication of the EN, there is a period of two years allowed for the national calibration period during which the national annex is issued, followed b
5、y a three year co-existence period. During the co-existence period Member States will be encouraged to adapt their national provisions to withdraw conflicting national rules before the end of the co-existence period. The Commission in consultation with Member States is expected to agree the end of t
6、he co-existence period for each package of Eurocodes. At the end of this co-existence period, the national standard will be withdrawn. In the UK, the corresponding national standards are: BS 5628-1:1992, Code of practice for use of masonry. Structural use of unreinforced masonry BS 5628-2:2000, Code
7、 of practice for use of masonry. Structural use of reinforced and prestressed masonry BS 5628-3:2001, Code of practice for use of masonry. Materials and components, design and workmanship and based on this transition period, these standards will be withdrawn on a date to be announced. Summary of pag
8、es This document comprises a front cover, an inside front cover, page i, a blank page, the EN title page, pages 2 to 34, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No
9、. DateComments BS EN 1996-2:2006 i The UK participation in its preparation was entrusted by Technical Committee B/525, Building and civil engineering structures, to Subcommittee B/525/6, Use of masonry, which has the responsibility to: A list of organizations represented on this subcommittee can be
10、obtained on request to its secretary. Where a normative part of this EN allows for a choice to be made at the national level, the range and possible choice will be given in the normative text, and a note will qualify it as a Nationally Determined Parameter (NDP). NDPs can be a specific value for a f
11、actor, a specific level or class, a particular method or a particular application rule if several are proposed in the EN. To enable EN 1996-1-1 to be used in the UK, the NDPs will be published in a National Annex, which will be made available by BSI in due course, after public consultation has taken
12、 place. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Cata
13、logue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand
14、the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCH
15、E NORM EN 1996-2 January 2006 ICS 91.010.30; 91.080.30Supersedes ENV 1996-2:1998 English Version Eurocode 6 - Design of masonry structures - Part 2: Design considerations, selection of materials and execution of masonry Eurocode 6 - Calcul des ouvrages en maonnerie - Partie 2: Conception, choix des
16、matriaux et mise en oeuvre des maonneries Eurocode 6 - Bemessung und Konstruktion von Mauerwerksbauten - Teil 2: Planung, Auswahl der Baustoffe und Ausfhrung von Mauerwerk This European Standard was approved by CEN on 24 November 2005. CEN members are bound to comply with the CEN/CENELEC Internal Re
17、gulations 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 Central Secretariat or to any CEN member. This
18、 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 Central Secretariat has the same status as the official versions. CEN members are the
19、 national standards bodies of Austria, Belgium, 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 and Unite
20、d Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2006 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1996-2:2006:
21、 E EN 1996-2:2006 (E) 2 Contents Page Background of the Eurocode programme. 4 Status and field of application of Eurocodes. 5 National Standards implementing Eurocodes 6 Links between Eurocodes and harmonised technical specifications (ENs and ETAs) for products 7 Additional information specific to E
22、N 1996-2. 7 National annex for EN 1996-2 7 1 General . 8 1.1 Scope of Part 2 of Eurocode 6. 8 1.2 Normative references 9 1.3 Assumptions. 9 1.4 Distinction between principles and application rules. 9 1.5 Definitions. 10 1.5.1 General . 10 1.5.2 Terms and definitions relating to communication of desi
23、gn . 10 1.5.3 Terms relating to climatic factors and exposure conditions 10 1.5.4 Term relating to masonry units 10 1.5.5 Other terms 11 1.6 Symbols. 11 2 Design Considerations. 11 2.1 Factors affecting the durability of masonry 11 2.1.1 General . 11 2.1.2 Classification of environmental conditions
24、. 11 2.1.2.1 Micro conditions of exposure. 11 2.1.2.2 Climatic factors (macro conditions of exposure). 12 2.1.3 Aggressive chemical environments 12 2.2 Selection of materials. 13 2.2.1 General . 13 2.2.2 Masonry units 13 2.2.3 Masonry mortar and concrete infill. 14 2.2.3.1 General 14 2.2.3.2 Selecti
25、on of factory made masonry mortar and concrete infill 14 2.2.3.3 Selection of site-made masonry mortar and concrete infill 14 2.2.4 Ancillary components and reinforcement. 15 2.3 Masonry 15 2.3.1 Detailing 15 2.3.2 Joint finishes. 15 2.3.3 Masonry movement. 15 2.3.4 Movement joints 16 EN 1996-2:2006
26、 (E) 3 2.3.4.1 General.16 2.3.4.2 Spacing of movement joints17 2.3.5 Permissible deviations17 2.3.6 Resistance to moisture penetration through external walls.18 3 Execution.18 3.1 General18 3.2 Acceptance, handling and storage of materials.18 3.2.1 General18 3.2.2 Reinforcement and prestressing mate
27、rials 18 3.3 Preparation of materials19 3.3.1 Site-made mortars and concrete infill19 3.3.1.1 General.19 3.3.1.2 Chloride content19 3.3.1.3 Strength of mortar and concrete infill.19 3.3.1.4 Admixtures and additions 19 3.3.1.5 Gauging19 3.3.1.6 Mixing method and mixing time20 3.3.1.7 Workable life of
28、 mortars and concrete infill containing cement20 3.3.1.8 Mixing in cold weather .20 3.3.2 Factory made mortars, pre-batched mortars, pre-mixed lime sand mortars and ready mixed concrete infill20 3.4 Permissible deviations21 3.5 Execution of masonry.23 3.5.1 General23 3.5.2 Laying masonry units.23 3.
29、5.3 Pointing and jointing for masonry other than thin layer masonry.24 3.5.3.1 Pointing 24 3.5.3.2 Jointing.24 3.5.4 Incorporation of damp proof course membranes .24 3.5.5 Movement joints.24 3.5.6 Incorporation of thermal insulation materials24 3.5.7 Cleaning facing masonry.24 3.6 Curing and protect
30、ive procedures during execution24 3.6.1 General24 3.6.2 Protection against rain.25 3.6.3 Protection against freeze/thaw cycling.25 3.6.4 Protection against effects of low humidity.25 3.6.5 Protection against mechanical damage25 3.6.6 Construction height of masonry25 A.1 Classification26 A.2 Exposure
31、 to wetting.27 B.1 Selection of masonry units and mortar29 C.1 Exposure classes 31 C.2 Selection of materials 31 EN 1996-2:2006 (E) 4 Foreword This document EN 1996-2 has been prepared by Technical Committee CEN/TC250 “Structural Eurocodes”, the secretariat of which is held by BSI. This European Sta
32、ndard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2006, and conflicting national standards shall be withdrawn at the latest by March 2010. CEN/TC 250 is responsible for all Structural Eurocodes. This document s
33、upersedes ENV 1996-2:1998 According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
34、Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Background of the Eurocode programme In 1975, the Commission of the European Community decided on an action programme in the field
35、of construction, based on Article 95 of the Treaty. The objective of the programme was the elimination of technical obstacles to trade and the harmonisation of technical specifications. Within this action programme, the Commission took the initiative to establish a set of harmonised technical rules
36、for the design of construction works which, in a first stage, would serve as an alternative to the national rules in force in the Member States and, ultimately, would replace them. For fifteen years, the Commission, with the help of a Steering Committee with Representatives of Member States, conduct
37、ed the development of the Eurocodes programme, which led to the first generation of European codes in the 1980s. In 1989, the Commission and the Member States of the EU and EFTA decided, on the basis of an agreement1) between the Commission and CEN, to transfer the preparation and the publication of
38、 the Eurocodes to the CEN through a series of Mandates, in order to provide them with a future status of European Standard (EN). This links de facto the Eurocodes with the provisions of all the Councils Directives and/or Commissions Decisions dealing with European standards (eg. the Council Directiv
39、e 89/106/EEC on construction products - CPD - and Council Directives 93/37/EEC, 1) Agreement between the Commission of the European Communities and the European Committee for Standardisation (CEN) concerning the work on EUROCODES for the design of building and civil engineering works (BC/CEN/03/89).
40、 EN 1996-2:2006 (E) 5 92/50/EEC and 89/440/EEC on public works and services and equivalent EFTA Directives initiated in pursuit of setting up the internal market). The Structural Eurocode programme comprises the following standards generally consisting of a number of parts: EN 1990, Eurocode: Basis
41、of structural design EN 1991, Eurocode 1: Actions on structures. EN 1992, Eurocode 2: Design of concrete structures. EN 1993, Eurocode 3: Design of steel structures. EN 1994, Eurocode 4: Design of composite steel and concrete structures. EN 1995, Eurocode 5: Design of timber structures. EN 1996, Eur
42、ocode 6: Design of masonry structures. EN 1997, Eurocode 7: Geotechnical design. EN 1998, Eurocode 8: Design of structures for earthquake resistance. EN 1999, Eurocode 9: Design of aluminium structures. Eurocode standards recognise the responsibility of regulatory authorities in each Member State an
43、d have safeguarded their right to determine values related to regulatory safety matters at national level where these continue to vary from State to State. Status and field of application of Eurocodes The Member States of the EU and EFTA recognise that Eurocodes serve as reference documents for the
44、following purposes: as a means to prove compliance of building and civil engineering works with the essential requirements of Council Directive 89/106/EEC, particularly Essential Requirement N1 Mechanical resistance and stability and Essential Requirement N2 Safety in case of fire; as a basis for sp
45、ecifying contracts for construction works and related engineering services; as a framework for drawing up harmonised technical specifications for construction products (ENs and ETAs). The Eurocodes, as far as they concern the construction works themselves, have a direct relationship with the Interpr
46、etative Documents2) referred to in Article 12 of the CPD, although they are of a 2) According to Article 3.3 of the CPD, the essential requirements (ERs) shall be given concrete form in interpretative documents for the creation of the necessary links between the essential requirements and the mandat
47、es for harmonised ENs and ETAGs/ETAs. EN 1996-2:2006 (E) 6 different nature from harmonised product standards3). Therefore, technical aspects arising from the Eurocodes work need to be adequately considered by CEN Technical Committees and/or EOTA Working Groups working on product standards with a vi
48、ew to achieving full compatibility of these technical specifications with the Eurocodes. The Eurocode standards provide common structural design rules for everyday use for the design of whole structures and component products of both a traditional and an innovative nature. Unusual forms of construct
49、ion or design conditions are not specifically covered and additional expert consideration will be required by the designer in such cases. National Standards implementing Eurocodes The National Standards implementing Eurocodes will comprise the full text of the Eurocode (including any annexes), as published by CEN, which may be preceded by a National title page and National foreword, and may be followed by a National Annex (informative). The National Annex may only contain in
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