1、December 2008DEUTSCHE NORM English price group 18No part of this standard 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 91.220!$TVe“1495166ww
2、w.din.deDDIN EN 12812Falsework Performance requirements and general designEnglish version of DIN EN 12812:2008-12Traggerste Anforderungen, Bemessung und EntwurfEnglische Fassung DIN EN 12812:2008-12SupersedesDIN EN 12812:2004-09www.beuth.deDocument comprises 48 pagesDIN EN 12812:2008-12 2 National f
3、oreword This standard has been prepared by Technical Committee CEN/TC 53 “Temporary works equipment” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committee), Technical Committee NA 005-
4、11-16 AA Traggerste. For materials other than those specified in this standard, see National Annex NA. Amendments This standard differs from DIN EN 12812:2004-09 as follows: a) The standard has been reviewed and corrected as appropriate. b) The calculation of the ideal shear stiffness has been rende
5、red more precise (9.4.2.4). Previous editions DIN EN 12812: 2004-09 DIN 4421: 1982-08 DIN EN 15265:2007-11 3 National Annex NA (normative) Additional materials for use in falsework in Germany The following materials may be used: materials for which the technical building regulations give design info
6、rmation (e.g. DIN 18800-1:1990-11); the additional materials listed in Tables NA.1 and NA.2. The materials for tubes listed in Table NA.1 shall be accompanied by an inspection document as in DIN EN 10204, provided by the manufacturer. The strength of materials as in Tables NA.1 and NA.2 shall be det
7、ermined using the characteristic values given in Table NA.3. Table NA.1 Additional materials for use in falsework 1a 1b 2 4 Steels for quenching and tempering (quenched and tempered TQ + T) as in DIN EN 10083:2006-10 Structural parts Part 2 Part 1 Cast steels as in DIN 1681:1985-06 Welded/seamless t
8、ubes as in DIN 1626:1984-10 and DIN 1629:1984-10 St 37.0 St 44.0 Tubes St 52.0 1 C 35 Jacks 1 C 45 GS-38 Fittings GS-45 1 C 35 51 CrV 4 1 C 45 42 CrMo 4 Fasteners 1 C 60 50 CrMo 4 DIN EN 12812:2008-12 4 Table NA.2 Materials for falsework made of previously used units 1 2 3 4 5 6 Structural parts Ste
9、els for general structural applications as in DIN 17100: 1987-12 Welded steel tubes as in DIN 1626-3: 1965-01 Seamless tubes as in DIN 1629-3: 1961-01 Steels for quenching and tempering as in DIN 17200: 1984-11 or DIN 17200: 1969-12 Malleable cast iron as in DIN 1692: 1963-06 Cast iron with nodular
10、graphite as in DIN 1693-1: 1973-10 St 33 St 33-1aSt 37-1aGeneral St 44-2 St 35 Tubes St 34-2 St 55 C 35 V Jacks St 42-2aC 45 V GTW-35-04 GGG-35.3 GTW-35bGGG-40 GTW- S 38-12 GTW-S 38bGTW 40-05 GTW-40bFittings GTW-55bSt 50-2 C 35 V St 60-1 KaC 45 V St 60-2 C 60 V 50 CrV 4 V 42 CrMo 4 V Fasteners St 60
11、-2 Ka50 CrMo 4 V aAs in DIN 17100:1966-09 bAs in DIN 1692:1963-06 DIN EN 15265:2007-11 5 Table NA.3 Characteristic values for materials as in Tables NA.1 and NA.2 Material Yield stress fy,k(N/mm2) Tensile strength fu,k(N/mm2) St 33, St 33-1 190 330 St 37-1 235 360 St 42-2 260 420 St 44-2 275 440 St
12、50-2 300 500 Structural steels St 60-1 K, St 60-2, St 60-2 K 340 600 St 34-2 190 330 St 35, St 37.0 235 370 St 44.0 275 440 St 52.0 355 510 Welded or seamless tubes St 55 300 550 1 C 35, C 35 V 320 550 1 C 45, C 45 V 370 630 1 C 60, C 60 V 450 750 42 CrMo 4 V, 42 CrMo 4 650 900 Steels for quenching
13、and tempering 50 CrV 4 V, 50 CrMo 4 V, 50 CrMo 4, 51 CrV 4 700 900 GS-38 180 380 Cast steelsaGS-45 215 450 GTW-35-04, GTW 35 145 350 GTW-S 38-12, GTW S 38 155 380 GTW-40-05, GTW-40 160 400 Malleable cast ironaGTW-55 275 550 GGG-35.3 205 350 Cast ironaGGG-40 230 400 a It should be noted that the modu
14、lus of elasticity for cast iron can be considerably lower than that for steel. DIN EN 12812:2008-12 6 National Annex NB (informative) Bibliography The following standards are necessary for the application of National Annex NA: DIN 1626:1984-10, Welded circular unalloyed steel tubes subject to specia
15、l requirements Technical delivery conditions DIN 1626-3:1965-01, Welded steel pipes in unalloyed and low alloy steels for supply purposes, process plant DIN 1629:1984-10, Seamless circular unalloyed steel tubes subject to special requirements Technical delivery conditions DIN 1629-3:1961-01, Seamles
16、s tubes in unalloyed steels for supply purposes, process plant and tanks; tubes DIN 1681:1985-06, Cast steels for general engineering purposes Technical delivery conditions DIN 1692:1963-06, Malleable cast iron Concepts, properties DIN 1693-1:1973-10, Cast iron with nodular graphite Unalloyed and lo
17、w alloy grades DIN 17100:1966-09, Steels for general structural purposes Quality standard DIN 17100:1987-12, Hot rolled products in non-alloy steels for general structural applications DIN 17200:1969-12, Quenched and tempered steels Quality specifications DIN 17200:1984-11, Steels for quenching and
18、tempering Technical delivery conditions DIN 18800-1:1990, Structural steelwork Design and construction DIN EN 10083-1:2006, Steels for quenching and tempering Part 1: General technical delivery conditions DIN EN 10083-2:2006, Steels for quenching and tempering Part 2: Technical delivery conditions f
19、or non alloy steels DIN EN 10204, Metallic products Types of inspection documents and tanks; pipes with quality specifications Technical Conditions of Delivery with quality specifications Technical Conditions of Delivery EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 12812July 2008ICS 91.220 Supe
20、rsedes EN 12812:2004 English VersionFalsework - Performance requirements and general designEtaiements - Exigences de performance et mthodes deconception et calculsTraggerste - Anforderungen, Bemessung und EntwurfThis European Standard was approved by CEN on 7 June 2008.CEN members are bound to compl
21、y with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management
22、 Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theoffic
23、ial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Sloven
24、ia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN nation
25、al Members.Ref. No. EN 12812:2008: EEN 12812:2008 (E) 2 Contents Foreword. 3 Introduction 4 1 Scope . 5 2 Normative references . 5 3 Terms and definitions. 6 4 Design classes 7 4.1 General. 7 4.2 Design class A 7 4.3 Design class B 7 5 Materials 8 5.1 General. 8 5.2 Basic requirements for materials
26、8 5.3 Weldability . 8 6 Brief 8 7 Design requirements 8 7.1 General. 8 7.2 Thickness of material . 9 7.3 Connections 9 7.4 Flexibility of prefabricated support towers 9 7.5 Foundation 10 7.6 Towers providing support . 12 8 Actions. 13 8.1 General. 13 8.2 Direct actions 13 8.3 Indirect actions . 17 8
27、.4 Other actions “Q9” 17 8.5 Load combinations. 17 9 Structural design for classes B1 and B2 18 9.1 Technical documentation 18 9.2 Structural design 20 9.3 Imperfections and boundary conditions 23 9.4 Calculation of internal forces 30 9.5 Characteristic values of resistance and friction values . 37
28、Annex A (informative) Relation with site activities . 40 Annex B (informative) . 41 Bibliography . 42 DIN EN 12812:2008-12 Page EN 12812:2008 (E) 3 Foreword This document (EN 12812:2008) has been prepared by Technical Committee CEN/TC 53 “Temporary works equipment”, the secretariat of which is held
29、by DIN. 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 January 2009, and conflicting national standards shall be withdrawn at the latest by January 2009. Attention is drawn to the possibility tha
30、t 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 document supersedes EN 12812:2004. This European Standard is one of a package of standards that includes also EN 12810-1,
31、EN 12810-2, EN 12811-1, EN 12811-2, EN 12811-3, EN 12813. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, F
32、rance, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 12812:2008-12 EN 12812:2008 (E) 4 Introduction Most falsework is used: to carr
33、y the loads due to freshly poured concrete for permanent structures until these structures have reached a sufficient load bearing capacity; to absorb the loads from structural members, plant and equipment which arise during the erection, maintenance, alteration or removal of buildings or other struc
34、tures; additionally, to provide support for the temporary storage of building materials, structural members and equipment. This European Standard gives performance requirements for specifying and using falsework and gives methods to design falsework to meet those requirements. Clause 9 provides desi
35、gn methods. It also gives simplified design methods for falsework made of tubes and fittings. The information on structural design is supplementary to the relevant Structural Eurocodes. The standard describes different design classes. This allows the designer to choose between more or less complex d
36、esign methods, while achieving the same level of structural safety. Provision for specific safety matters is dealt with in EN 12811-1 and other documents. DIN EN 12812:2008-12 EN 12812:2008 (E) 5 1 Scope This European Standard specifies performance requirements and limit state design methods for two
37、 design classes of falsework. It sets out the rules that have to be taken into account to produce a safe falsework structure. It also provides information for falsework which is required to support a “permanent structure“, or where the design or supply of falsework has to be commissioned. This Europ
38、ean Standard also gives information on foundations. This European Standard does not specify requirements for formwork, although formwork may be a part of the falsework construction. Nor does it provide information on access and working scaffolds, which is given in EN 12811-1. This European Standard
39、does not provide information about site activities. It does not provide information about the use of some standardized products, including timber formwork beams conforming to EN 13377 and props conforming to EN 1065. 2 Normative references The following referenced documents are indispensable for the
40、 application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 74-1, Couplers, spigot pins and baseplates for use in falsework and scaffolds Part 1: Couplers for tubes R
41、equirements and test procedures prEN 74-2, Couplers, spigot pins and baseplates for use in falsework and scaffolds Part 2: Special couplers Requirements and test procedures EN 74-3, Couplers, spigot pins and baseplates for use in falsework and scaffolds Part 3: Plain base plates and spigot pins Requ
42、irements and test procedures EN 1065:1998, Adjustable telescopic steel props Product specifications, design and assessment by calculation and tests EN 1090-2, Execution of steel structures and aluminium structures - Part 2: Technical requirements for steel structures EN 1090-3, Execution of steel st
43、ructures and aluminium structures - Part 3: Technical requirements for aluminium structures EN 1990, Eurocode Basis of structural design EN 1991 (all parts), Eurocode 1 Actions on structures EN 1993-1-1:2005, Eurocode 3: Design of steel structures - Part 1-1: General rules and rules for buildings EN
44、 1997 (all parts), Eurocode 7 Geotechnical design EN 1998 (all parts), Eurocode 8 Design of structures for earthquake resistance EN 1999 (all parts), Eurocode 9 Design of aluminium structures DIN EN 12812:2008-12 EN 12812:2008 (E) 6 EN 12810-1:2003, Facade scaffolds made of prefabricated components
45、Part 1: Product specifications EN 12811-1:2003, Temporary works equipment Part 1: Scaffolds Performance requirements and general design EN 12811-3, Temporary works equipment Part 3: Load testing EN 12813, Temporary works equipment - Load bearing towers of prefabricated components - Particular method
46、s of structural design EN 13377, Prefabricated timber formwork beams Requirements, classification and assessment 3 Terms and definitions For the purposes of this document, the terms and definitions in EN 1993-1-1:2005 and the following apply. 3.1 brace component connecting two points of a structure
47、to help stiffen it 3.2 design class class that defines the extent of design for falsework 3.3 falsework temporary support for a part of a structure while it is not self-supporting and for associated service loads 3.4 formwork part of temporary works used to give the required shape and support to in-
48、situ concrete 3.5 foundation sub-structure needed to transmit loads into the ground 3.6 kentledge material placed on a structure to provide stability by the action of its dead weight 3.7 imperfections initial out of straightness (bow imperfection) or out of verticality (sway imperfection) of a struc
49、tural component or of the structure used for calculations NOTE 1 A bow imperfection can occur both in an individual member and in the complete tower or modular beam assembly. It arises because the member is not straight, is manufactured not straight or members are assembled out of alignment. NOTE 2 These are the values for design purposes and may be more than the erection tolerance. 3.8 node theoretical intersection point of members DIN EN 12812:2008-12 EN 12812:2008 (E) 7 3.9 sway angular d
