1、BRITISH STANDARDBS EN 1993-3-2:2006Eurocode 3 Design of steel structures Part 3-2: Towers, masts and chimneys ChimneysICS 91.010.30; 91.060.40; 91.080.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g
2、40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 1993-3-2:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 May 2008 BSI 2008ISBN 978 0 580 54894 9National forewordThis British Standard is the UK implementation of EN 1993-3-2:2
3、006.The structural 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 d
4、esign. The conflicting national standards will be withdrawn at the end of the coexistence period, after all the EN Eurocodes of a package are available. Following publication of the EN, there is a period allowed for national calibration during which the National Annex is issued, followed by a coexis
5、tence period of a maximum three years. During the coexistence period Member States are encouraged to adapt their national provisions. Conflicting national standards will be withdrawn by March 2010 at the latest. In the UK, the following national standard is partially superseded by BS EN 1993-3-2:200
6、6. This standard will be withdrawn by March 2010 at the latest. 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 b
7、e a specific value for a factor, a specific level or class, a particular method or a particular application rule if several are proposed in the EN. To enable BS EN 1993-3-2:2006 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, a
8、fter public consultation has taken place. The UK participation in its preparation was entrusted by Technical Committee B/525, Building and civil engineering structures, to Subcommittee B/525/32, Towers and masts and Subcommittee B/525/13, Chimneys. A list of organizations represented on this committ
9、ee can be obtained on request to its secretary. 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 cannot confer immunity from legal obligations. British Standard partially sup
10、ersededBS 4076:1989 Specification for steel chimneysAmendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1993-3-2October 2006ICS 91.010.30; 91.060.40; 91.080.10 Supersedes ENV 1993-3-2:1997 English VersionEurocode 3 - Design of steel structures
11、 - Part 3-2: Towers,masts and chimneys - ChimneysEurocode 3 - Calcul des structures en acier - Partie 3-2:Tours, mts et chemines - CheminesEurocode 3 - Bemessung und Konstruktion vonStahlbauten - Teil 3-2: Trme, Maste und Schornsteine -SchornsteineThis European Standard was approved by CEN on 13 Jan
12、uary 2006.CEN members are bound to comply 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 obtai
13、ned on 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 translationunder the responsibility of a CEN member into its own language and notified to the Central Secreta
14、riat has the same status as the officialversions.CEN members are the 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
15、, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reserv
16、edworldwide for CEN national Members.Ref. No. EN 1993-3-2:2006: EEN 1993-3-2: 2006 (E) 2 Contents 1 General .5 1.1 Scope5 1.2 Normative references .6 1.3 Assumptions.6 1.4 Distinction between principles and application rules.6 1.5 Terms and definitions.6 1.6 Symbols used in Part 3.2 of Eurocode 3 9
17、2 Basis of design9 2.1 Requirements9 2.2 Principles of limit state design .10 2.3 Actions and environmental influences .10 2.4 Ultimate limit state verifications12 2.5 Geometrical data 12 2.6 Durability .12 3 Materials 12 3.1 General .12 3.2 Structural steels 12 3.3 Connections12 4 Durability .13 4.
18、1 Allowance for corrosion.13 4.2 External corrosion allowance.13 4.3 Internal corrosion allowance 13 5 Structural analysis.14 5.1 Modelling of the chimney for determining action effects14 5.2 Calculation of internal stress resultants and stresses14 6 Ultimate limit states.16 6.1 General .16 6.2 Stru
19、ctural shells17 6.3 Safety assessment of other structural elements of the chimney .18 6.4 Joints and connections18 6.5 Welded connections .19 7 Serviceability limit states 19 7.1 Basis.19 7.2 Deflections .19 8 Design assisted by testing20 9 Fatigue20 9.1 General .20 9.2 Fatigue loading.21 9.3 High c
20、ycle fatigue resistances21 9.4 Safety assessment.21 9.5 Partial factors for fatigue22 Annex A normative Reliability differentiation and partial factors for actions.23 A.1 Reliability differentiation for steel chimneys.23 A.2 Partial factors for actions23 BS EN 1993-3-2:2006EN 1993-3-2: 2006 (E) 3 An
21、nex B informative Aerodynamic and damping measures 24 B.1 General .24 B.2 Aerodynamic measures 24 B.3 Dynamic vibration absorber.25 B.4 Cables with damping devices.25 B.5 Direct damping.25 Annex C informative Fatigue resistances and quality requirements .26 C.1 General .26 C.2 Enhancement of fatigue
22、 strength for special quality requirements 26 Annex D informative Design assisted by testing 29 D.1 General .29 D.2 Definition of the logarithmic damping decrement .29 D.3 Procedure for measuring the logarithmic damping decrement.29 Annex E informative Execution.30 E.1 General .30 E.2 Execution tole
23、rances 30 E.3 Quality of welds and fatigue 30 BS EN 1993-3-2:2006EN 1993-3-2: 2006 (E) 4 Foreword This European Standard EN 1993-3-2, Eurocode 3: Design of steel structures: Part 3-2 Towers, masts and chimneys Chimneys, has been prepared by Technical Committee CEN/TC250 Structural Eurocodes , the Se
24、cretariat of which is held by BSI. CEN/TC250 is responsible for all Structural Eurocodes. 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 April 2007 and conflicting National Standards shall be wit
25、hdrawn at latest by March 2010. This Eurocode supersedes ENV 1993-3-2. According to the CEN-CENELEC Internal Regulations, the National Standard Organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland,
26、 France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. National Annex for EN 1993-3-2 This standard gives alternative procedures, values and r
27、ecommendations for classes with notes indicating where national choices may have to be made. Therefore the National Standard implementing EN 1993-3-2 should have a National Annex containing all Nationally Determined Parameters to be used for the design of steel structures to be constructed in the re
28、levant country. National choice is allowed in EN 1993-3-2 through paragraphs: 2.3.3.1(1) 2.3.3.5(1) 2.6(1) 4.2(1) 5.1(1) 5.2.1(3) 6.1(1)P 6.2.1(6) 6.4.1(1) 6.4.2(1) 6.4.3(2) 7.2(1) 7.2(2) 9.1(3) 9.1(4) 9.5(1) A.1(1) A.2(1) (2 places) C.2(1) BS EN 1993-3-2:2006EN 1993-3-2: 2006 (E) 5 1 General 1.1 Sc
29、ope (1) This Part 3.2 of EN 1993 applies to the structural design of vertical steel chimneys of circular or conical section. It covers chimneys that are cantilevered, supported at intermediate levels or guyed. (2) The provisions in this Part supplement those given in Part 1.1 of EN 1993. (3) This Pa
30、rt 3.2 is concerned only with the requirement for resistance (strength, stability and fatigue) of steel chimneys. NOTE: In this context (i.e. resistance) the term chimney refers to: a) chimney structures b) the steel cylindrical elements of towers c) the steel cylindrical shafts of guyed masts (4) F
31、or provisions concerning aspects, such as chemical attack, thermo-dynamical performance or thermal insulation see EN 13084-1. For the design of liners see EN 13084-6. (5) Foundations in reinforced concrete for steel chimneys are covered in EN 1992 and EN 1997. See also 4.7 and 5.4 of EN 13084-1. (6)
32、 Wind loads are specified in EN 1991-1-4. NOTE: Procedures for the wind response of guyed chimneys are given in annex B of EN 1993-3-1. (7) This Part does not cover special provisions for seismic design, which are given in EN 1998-6. See also 5.2.4.1 of EN 13084-1. (8) Provisions for the guys and th
33、eir attachments are given in EN 1993-3-1 and EN 1993-1-11. (9) For the execution of steel chimneys, reference should be made to EN 1090, Part 2 and EN 13084-1. NOTE: Execution is covered to the extent that is necessary to indicate the quality of the construction materials and products that should be
34、 used and the standard of workmanship on site needed to comply with the assumptions of the design rules. (10) The following subjects are dealt with in EN 1993-3-2: Section 1: General Section 2: Basis of design Section 3: Materials Section 4: Durability Section 5: Structural analysis Section 6: Ultim
35、ate limit states Section 7: Serviceability limit states Section 8: Design assisted by testing Section 9: Fatigue BS EN 1993-3-2:2006EN 1993-3-2: 2006 (E) 6 1.2 Normative references (1) The following normative documents contain provisions which, through references in this text, constitute provisions
36、of this European standard. For dated references, subsequent amendments to or revisions of any of these publications do not apply. However, parties to agreements based on this European standard are encouraged to investigate the possibility of applying the most recent editions of the normative documen
37、ts indicated below. For undated references the latest edition of the normative document referred to applies. EN 1090 Execution of steel structures and aluminium structures EN 10025 Hot rolled products of non-alloy structural steels. Technical delivery conditions EN 10088 Stainless steels EN 13084-1
38、Free standing industrial chimneys Part 1 : General Requirements EN ISO 5817 Welding - Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding excluded) - Quality levels for imperfections 1.3 Assumptions (1) See 1.3 of EN 1993-1-1. 1.4 Distinction between principles and applica
39、tion rules (1) See 1.4 of EN 1993-1-1. 1.5 Terms and definitions (1) The terms and definitions that are defined in EN 1990 for common use in the Structural Eurocodes apply to this Part 3.2 of EN 1993. (2) Supplementary to Part 1 of EN 1993, for the purposes of this Part 3.2, the following definition
40、s apply. Definitions used for chimney structures are shown in Figure 1.1. 1.5.1 chimney Vertical construction works or building components that conduct waste gases, or other flue gases, supply or exhaust air to the atmosphere. 1.5.2 self-supported chimney A chimney whose supporting shaft is not conn
41、ected with any other construction above the base level. 1.5.3 guyed chimney A chimney whose supporting shaft is held in place by guys at one or more height levels. 1.5.4 single-wall chimney A chimney whose structural shell also conducts the flue gases. It may be fitted by thermal insulation and/or i
42、nternal lining. 1.5.5 double-wall chimney A chimney consisting of an outer steel structural shell and one inner liner which carries the flue gases. BS EN 1993-3-2:2006EN 1993-3-2: 2006 (E) 7 1.5.6 multi-flue chimney A group of two or more chimneys structurally interconnected or a group of two or mor
43、e liners within a structural shell. 1.5.7 liner The structural element (membrane) of the lining system, contained within the structural shell. 1.5.8 lining system Total system, if any, which separates the flue gases from the structural shell. This comprises a liner and its supports, the space betwee
44、n the liner and structural shell and insulation, where existing. 1.5.9 structural shell The main load-bearing steel structure of the chimney, excluding any flanges. 1.5.10 aerodynamic device A device fitted to the chimney to reduce vortex excitation without increasing the structural damping. 1.5.11
45、damping device A device fitted to the chimney to reduce vortex excited oscillations by increasing the structural damping. 1.5.12 spoiler A device attached to the surface of a chimney with the objective of reducing cross wind response. 1.5.13 helical strakes, shrouds or slats Devices fitted to the ou
46、ter surface of the chimney to reduce cross wind response. 1.5.14 base plate A horizontal plate fixed to the base of a chimney. 1.5.15 anchor bolt A bolt for the connection of the chimney to the foundation. 1.5.16 stiffening rings Horizontal members to prevent ovalling and to hold the chimney shell r
47、ound during fabrication and transport. Horizontal members to provide stiffeners at cut outs and openings or possibly at changes in slope of the structural shell. BS EN 1993-3-2:2006EN 1993-3-2: 2006 (E) 8 1 Cravat 2 Tundish 3 Access door 4 Drain pipe 5 Base or bearing plate 6 Cope hood 7 Cap plate 8
48、 Cope angle 9 Lateral supports 10 Mineral wool insulation 11 Liners 12 Jointing flange 13 Structural shell 14 Inlet 15 Liner base 16 Base cone 17 Compression ring 18 Base stool 19 Anchor bolts 20 Possible stiffening ring 21 Top cone 22 Helical aerodynamic stabilizers 23 Intermediate cone 24 Jointing
49、 flange 25 Splitter plate 26 Damping device 27 Liner 28 Access hooks 29 Base plate Multiflue chimney Single wall chimney Double wall chimney Figure 1.1 Definitions used for Chimneys BS EN 1993-3-2:2006EN 1993-3-2: 2006 (E) 9 1.6 Symbols used in Part 3.2 of Eurocode 3 (1) In addition to those given in EN 1993-1-1 the following main symbols are used. c corrosion allowance N number of cycles b diameter d bolt diameter h height m slope t time w wind pressure ref reference crit critical value ext external F load f
