DIN EN 1993-3-2 NA-2017 National Annex - Nationally determined parameters - Eurocode 3 Design of steel structures - Part 3-2 Towers masts and chimneys - Chimneys《国家附录 国家制定参数 欧洲规范3 .pdf

1、January 2017 English price group 10No part of this translation 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 91.010.30; 91.060.40; 91.080.13!

2、%_:v“2602383www.din.deDIN EN 1993-3-2/NANational Annex Nationally determined parameters Eurocode 3: Design of steel structures Part 32: Towers, masts and chimneys Chimneys,English translation of DIN EN 1993-3-2/NA:2017-01Nationaler Anhang National festgelegte Parameter Eurocode 3: Bemessung und Kons

3、truktion von Stahlbauten Teil 32: Trme, Maste und Schornsteine Schornsteine,Englische bersetzung von DIN EN 1993-3-2/NA:2017-01Annexe Nationale Paramtres dtermins au plan national Eurocode 3: Calcul des structures en acier Partie 32: Tours, mts et chemines Chemines,Traduction anglaise de DIN EN 1993

4、-3-2/NA:2017-01SupersedesDIN EN 199332/NA:201012www.beuth.deDocument comprises 16 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.10.17 DIN EN 1993-3-2/NA:2017-01 2 A comma is used as the decimal marker. Contents Page Foreword

5、. 4 1 Scope 5 2 National provisions for the application of DIN EN 1993-3-2:2010-12 . 5 2.1 General 5 2.2 National provisions . 6 NCI re 1.2 Normative references 6 NDP re 2.3.3.1(1) Note 1 . 6 NDP re 2.3.3.5(1) Note 1 . 6 NDP re 2.6(1) Note . 6 NCI re 3.1 7 NDP re 4.2(1) Note . 7 NDP re 5.1(1) Note .

6、 7 NDP re 5.2.1(3) Note 7 NDP re 6.1(1) P Note 7 NDP re 6.2.1(6) Note 7 NDP re 6.4.1(1) Note 7 NDP re 6.4.2(1) Note 7 NDP re 6.4.3(2) Note 1 8 NDP re 7.2(1) Note . 8 NDP re 7.2(2) Note 2 8 NDP re 9.1(3) Note . 8 NDP re 9.1(4) Note . 8 NDP re 9.5(1) Note . 8 NCI 10 Force coefficient cf0and reference

7、area A . 8 NCI 10.1 Cylindrical structural shell 8 NCI 11 Inspection equipment . 10 NCI 11.1 General 10 NCI 11.2 Ladders . 11 NCI 11.3 Platforms and walkways 11 NDP re A.1(1) Note . 11 NDP re A.2 (1) Note 2 . 11 NDP re 7.2(1) Note 3 11 DIN EN 1993-3-2/NA:2017-01 3 NCI re C.1 (2). 11 NDP re C.2 (1) N

8、ote 12 NCI Annex NA.F . 13 NA.F.1 General 13 NA.F.2 Components in contact with flue gas 13 NA.F.3 Structural members 13 NCI Annex NA.F . 15 NCI Bibliography 16 DIN EN 1993-3-2/NA:2017-01 4 Foreword This document has been prepared by Working Committee NA 005-08-05 AA “Towers, masts and chimneys (SpA

9、CEN/TC 250/SC 3/WG 14)”. This document is the National Annex to DIN EN 1993-3-2:2010-12 Eurocode 3: Design of steel structures Part 3-2: Towers, masts and chimneys Chimneys. European Standard EN 1993-3-2 allows national safety parameters, referred to as Nationally Determined Parameters (NDPs), to be

10、 specified for a number of points. The NDPs cover alternative verification methods, the provision of individual values and the selection of classes from designated classification systems. The relevant parts of the text are identified in the European Standard by references to the possibility of natio

11、nal choice and are listed in NA.2.1. This National Annex also includes non-contradictory complementary information (NCI) for the application of DIN EN 1993-3-2:2010-12. This National Annex is an integral part of DIN EN 1993-3-2:2010-12. Attention is drawn to the possibility that some of the elements

12、 of this document may be the subject of patent rights. DIN and/or DKE shall not be held responsible for identifying any or all such patent rights. Amendments This document differs from DIN EN 1993-3-2/NA:2010-12 as follows: a) Section 10 “Fundamental force coefficient cf0and reference area A” has be

13、en added; b) Section 11 “Inspection equipment” has been added. Previous editions DIN 4133: 1973-08, 1991-11 DIN V 4133: 2007-07 DIN EN 1993-3-2/NA: 2010-12 DIN EN 1993-3-2/NA:2017-01 5 1 Scope This National Annex contains national provisions relating to the design and construction of vertical steel

14、chimneys of circular or conical cross section, that are to be taken into consideration when applying DIN EN 1993-3-2:2010-12 in Germany. This National Annex is only valid in conjunction with DIN EN 1993-3-2:2010-12. NOTE In this context, the term “chimney” covers: a) chimney structures; b) the steel

15、 cylindrical elements of towers; c) the steel cylindrical shafts of guyed masts. 2 National provisions for the application of DIN EN 1993-3-2:2010-12 2.1 General DIN EN 1993-3-2:2010-12 refers to the option of choosing Nationally Determined Parameters (NDPs) at the following places in the text: 2.3.

16、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) C.2(1) In addition, NA.2.2 includes non-contradictory complementary information for the application of DIN EN 1993-3-2:2010-12. This information is preceded

17、by the letters “NCI”. 1.2 3.1 Section 10 Section 11 C.1(2) Annex NA.F Annex NA.G DIN EN 1993-3-2/NA:2017-01 6 2.2 National provisions In the following, the clauses are numbered as in DIN EN 1993-3-2:2010-12. NCI re 1.2 Normative references NA Standards of the DIN 18799 series, Fixed ladders for cons

18、truction works NA DIN EN 1991-1-3, Eurocode 1 Actions on structures Part 1-3: General actions Snow loads NA DIN EN 1991-1-4:2010-12, Eurocode 1 Actions on structures Part 1-4: General actions, wind actions NA DIN EN 1993-1-8, Eurocode 3: Design of steel structures Part 1-8: Design of joints NA DIN E

19、N 1993-1-8/NA:2010-12, National Annex Nationally determined parameters Eurocode 3: Design of steel structures Part 1-8: Design of joints NA DIN EN 1993-1-9, Eurocode 3: Design of steel structures Part 1-9: Fatigue NA DIN EN 1993-3-2:2010-12, Eurocode 3: Design of steel structures Part 3-2: Towers, m

20、asts and chimneys Chimneys NA DIN EN 13084-7:2013-03, Free-standing chimneys Part 7: Product specifications of cylindrical steel fabrications for use in single wall steel chimneys and steel liners NA DIN EN ISO 5817, Welding Fusion-welded joints in steel, nickel, titanium and their alloys (beam weld

21、ing excluded) Quality levels for imperfections NA DASt-Richtlinie (DASt Code of Practice) 020, Bemessung schlanker, sthlerner, windbelasteter Kreiszylinderschalen (Design of slender steel cylindrical shells subjected to wind load)1)NA IVS-Richtlinie (IVS Code of practice) 103, Empfehlung zur Bemessu

22、ng von Schornsteinrohren mit Fuchsffnungen (Recommendations for the design of steel chimneys with flue opening)2)NDP re 2.3.3.1(1) Note 1 The recommendations apply. The vertical imposed load of 2,0 kN/m2includes snow and ice loads. A point load of 3 kN may be assumed to act at the most unfavourable

23、place if its effect can be deemed more unfavourable than the uniformly distributed load of 2,0 kN/m2. NDP re 2.3.3.5(1) Note 1 DIN EN 1991-1-3 applies. NDP re 2.6(1) Note The design service life, which is to be at least ten years, is subject to agreement. 1)Obtainable from Stahlbau Verlags- und Serv

24、ice GmbH, Sohnstr. 65, D-40237 Dsseldorf, Germany. 2)Obtainable from Industrie Verband Stahlschornsteine e. V., D-90482 Nrnberg, Germany. DIN EN 1993-3-2/NA:2017-01 7 NCI re 3.1 Minimum wall thickness The minimum wall thickness of structural shell, liner and other parts of the structure shall be 1,5

25、 mm. NDP re 4.2(1) Note The recommended values apply. NDP re 5.1(1) Note Any enhanced damping effect due to the interaction of shell and liner shall be verified (e.g. by measurement on the structure after erection or experts opinion). NDP re 5.2.1(3) Note The recommendation applies. In addition, due

26、 consideration shall be given to the specifications of DASt-Richtlinie 020. NDP re 6.1(1) P Note The recommendations apply. NDP re 6.2.1(6) Note If the shell is provided with openings (e.g. flue inlet, to introduce measuring instruments, or for inspection purposes), an analysis for adequate strength

27、 and stability shall be made, with due consideration being given to all possible actions in service. Openings in the shell shall have rounded edges, with radii as specified in Table NA.1. Table NA.1 Minimum edge radii on openings Maximum Sd/Rd ratio 0,75 0,50 0,35 0,10 0,10 Minimum edge radius R (wh

28、ichever is greater) 10 t 8 t 5 t 2 t or 10 mm 5 mm t Wall thickness of shell See IVS-Richtlinie 103 for further information. NDP re 6.4.1(1) Note The recommendations apply. NDP re 6.4.2(1) Note No further information is provided. DIN EN 1993-3-2/NA:2017-01 8 NDP re 6.4.3(2) Note 1 Anchor nuts shall

29、be secured against working loose. Anchors and nuts shall be protected against corrosion. Unless steel components embedded in concrete are located at least 30 cm above ground level, adequate corrosion protection is to be provided. The top face of concrete foundations shall have a fall of at least 5 %

30、 to permit water to be drained, and shall be rubbed down. Suitable grouting mortar shall be injected underneath the base plate or ring of chimneys having a concrete foundation immediately after erection, following the mortal manufacturers instructions as regards mixing and injection of the material.

31、 NDP re 7.2(1) Note The recommendations apply. NDP re 7.2(2) Note 2 The recommendations apply. NDP re 9.1(3) Note No further information is provided. NDP re 9.1(4) Note Tables 1 to 3 of DIN EN 13084-7:2013-03 apply. NDP re 9.5(1) Note The recommended partial safety factors Ff= 1,00; Mf= 1,00 apply.

32、NCI 10 Force coefficient cf0and reference area A NCI 10.1 Cylindrical structural shell The force coefficient cf0is to be calculated using the Reynolds number Re and the equivalent surface roughness as set out in DIN EN 1991-1-4:2010-12, Figure 7.28. In addition to the provisions in DIN EN 1991-1-4,

33、conical components with external diameter b may also be assumed under the following conditions: with a slant of the lateral surface of 0,1 dK1,6 1,2 d h n dK h DIN EN 1993-3-2/NA:2017-01 10 Shaft Fittings applies to cf0A applies to cf0A All measurement ranges 1,1 b h All measurement ranges 0 0 dK0,1

34、 dK1,2 n dK h and ladders, depending on type Cylinder without fittings see DIN EN 1991-1-4 N Number of cables h Length of segment The wind direction indicator indicates the least favourable wind direction. NCI 11 Inspection equipment NCI 11.1 General Inspection equipment shall comply with occupation

35、al safety regulations. The chimney outlet shall be made accessible; a fixed access ladder is mandatory at a height Fof above 25 m. The inspection equipment shall allow access to all shell flange joints around the entire circumference of the chimney. DIN EN 1993-3-2/NA:2017-01 11 NOTE Inspection equi

36、pment may, for example, comprise an external steel walkway according to DIN 1056:1984-10, 10.9.2 with a fall prevention rail. NCI 11.2 Ladders Ladders shall be erected and used in accordance with the provisions set out in standards series DIN 18799. No step irons shall be fitted inside the flue line

37、r. However, provision shall be made for the installation of access equipment3)where the clear width of the liner exceeds 0,6 m. NCI 11.3 Platforms and walkways Platforms shall be erected a maximum of 1,50 m below the chimney outlet for inspection and work on the chimney. Platforms shall satisfy the

38、requirements for rest platforms set out in standards series DIN 18799. Platforms and walkways of appropriate dimensions shall be provided for measurement and maintenance work. NDP re A.1(1) Note Reliability class 3 shall be applied in cases where reliability class 3 is appropriate, as set out in DIN

39、 EN 1993-3-2:2010-12, Table A.1; otherwise class 2 is normally to be used. Any deviations shall be authorized by the appropriate authority. NDP re A.2 (1) Note 2 Table NA.A.2 below shall be used instead of Table A.2. Table NA.A.2 Partial factors for permanent and variable actions Type of action Reli

40、ability class (see note to 2.1.2) Permanent actions Variable actions (Qs) Unfavourable 3 1,5 1,9 2 1,3 1,5 1 1,1 1,3 Favourable All classes 0,9 0,0 Accidental situations 1,0 1,0 NDP re 7.2(1) Note 3 No further information is provided. NCI re C.1 (2) In the original German version the term Tragrohr i

41、s to be replaced by the term Tragkonstruktion. Quality level B as in DIN EN ISO 5817:2006-10 shall be used instead of level C (see DIN EN 1090-2). 3) BGR 159 Hochziehbare Personenaufnahmemittel (Security regulations governing the use of hydraulic elevated work platforms), issued by the Principal Ass

42、ociation of Commercial Employers Liability Insurance Associations. DIN EN 1993-3-2/NA:2017-01 12 NDP re C.2 (1) Note Chimneys are considered to be subjected to predominantly static loading. Thus, no fatigue analysis need be made, by analogy with DIN EN 1993-1-9, if one of the following conditions is

43、 satisfied: 26 N/mm2Mf 5 106 26 N/mm2 /Mf3where = max minis the stress range, in N/mm2, for any design action in the ultimate limit state not considered as predominantly static; is the number of stress cycles; Mfis the partial factor as in NDP re 9.5(1) above. Where two or more variable actions that

44、 are not predominantly static are likely, the stress range may be considered for each action separately. NOTE The considerations are based on the fatigue analysis for detail category 36 and assuming the aggregate of stress cycles. DIN EN 1993-3-2/NA:2017-01 13 NCI Annex NA.F (normative) Inspection N

45、A.F.1 General Chimneys shall be regularly inspected by a competent person. The findings of each inspection shall be recorded. NA.F.2 Components in contact with flue gas The first inspection shall be made 12 months after commissioning of the system at the latest. During this period, all available dat

46、a regarding the chemical loading of the chimney shall be checked. Inspections shall cover any recognizable alterations to the components in contact with flue gas. The intervals for further inspections shall be specified as a function of the level of chemical load in accordance with Table NA.F.1 belo

47、w. Table NA.F.1 Inspection intervals for components in contact with flue gas Level of chemical load Low Medium High Very high Inspection interval, in years 4 3 2 1 NOTE More information regarding chemical loading is provided in DIN EN 13084-1. If the level of chemical load is not established, it sha

48、ll be taken as being “very high”. Inspections shall also cover the man-size space between shell and liner NA.F.3 Structural members The first inspection shall be made 12 months after erection of the system at the latest. Inspections shall cover all elements relevant to the structural safety of the c

49、himney. The inspection intervals shall be selected as a function of the chimney height and according to whether or not a fatigue assessment is required (see Table NA.F.2). DIN EN 1993-3-2/NA:2017-01 14 Table NA.F.2 Inspection intervals for structural members (in years) Fatigue assessment required Fatigue assessment not