1、NA to BS EN 1994-1-1:2004UK National Annex to Eurocode 4: Design of composite steel and concrete structures Part 1-1: General rules and rules for buildingsICS 91.010.30; 91.080.10; 91.080.40NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWNATIONAL ANNEXLicensed Copy: Wang Bin, I
2、SO/EXCHANGE CHINA STANDARDS, 29/10/2008 01:43, Uncontrolled Copy, (c) BSIPublishing and copyright informationThe BSI copyright notice displayed in this document indicates when the document was last issued. BSI 2008ISBN 978 0 580 54981 6The following BSI references relate to the work on this standard
3、:Committee reference B/525/4Draft for comment 07/30128172 DCPublication historyFirst published August 2008Amendments issued since publicationAmd. no. Date Text affectedNA to BS EN 1994-1-1:2004Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 29/10/2008 01:43, Uncontrolled Copy, (c) BSI BSI 200
4、8 1NA to BS EN 1994-1-1:2004National Annex (informative) to BS EN 1994-1-1:2004, Eurocode 4: Design of composite steel and concrete structures Part 1.1: General rules and rules for buildingsIntroductionThis National Annex has been prepared by BSI Subcommittee B/525/4, Composite structures. In the UK
5、 it is to be used in conjunction with BS EN 1994-1-1.NA.1 ScopeThis National Annex gives:a) the UK decisions for the Nationally Determined Parameters described in the following subclauses of BS EN 1994-1-1:2004. 2.4.1.1(1) 2.4.1.2(5) 2.4.1.2(6) 2.4.1.2(7) 3.1(4) 3.5(2) 6.4.3(1)(h) 6.6.3.1(1) 6.6.3.1
6、(3) 6.6.4.1(3) 6.8.2(1) 6.8.2(2) 9.1.1(2) 9.6(2) 9.7.3(4) 9.7.3(8) 9.7.3(9) B.2.5(1) B.3.6(5)b) the UK decisions on the status of BS EN 1994-1-1:2004 informative annexes; andc) references to non-contradictory complementary information.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 29/10/2008
7、 01:43, Uncontrolled Copy, (c) BSINA to BS EN 1994-1-1:20042 BSI 2008NA.2 Nationally Determined ParametersNA.2.1 GeneralUK decisions for the Nationally Determined Parameters described in BS EN 1994-1-1:2004 are given in NA.2.2 to NA.2.20.NA.2.2 Partial factor, *pBS EN 1994-1-1:2004, 2.4.1.1(1)Use re
8、commended value.NA.2.3 Partial factor, *V BS EN 1994-1-1:2004, 2.4.1.2(5)The value of gamma *Vmay vary depending on the form of slab, geometry of decking, and the size and layout of shear studs. Use the recommended value unless shear stud resistances given in non-contradictory complementary informat
9、ion (see NA.4) would justify the use of an alternative value.NA.2.4 Partial factor, *VS BS EN 1994-1-1:2004, 2.4.1.2(6)Use the recommended value. NA.2.5 Partial factor, *Mf,s BS EN 1994-1-1:2004, 2.4.1.2(7)Use the recommended value. NA.2.6 Shrinkage of concrete BS EN 1994-1-1:2004, 3.1(4)Use Annex C
10、 of BS EN 1994-1-1:2004 for the dry shrinkage of concrete.NA.2.7 Nominal thickness, t, of steel sheets BS EN 1994-1-1:2004, 3.5(2)The nominal bare metal thickness of the sheeting can be a minimum of 0.70 mm. NA.2.8 Other types of steel section BS EN 1994-1-1:2004, 6.4.3(1)(h)For BS 4-1 or similar I
11、and H steel sections the guidance given in BS EN 1994-1-1:2004, 6.4.3(1) may be applied where the section parameter is less than or equal to the limiting values given in Table NA.1.Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 29/10/2008 01:43, Uncontrolled Copy, (c) BSI BSI 2008 3NA to BS
12、EN 1994-1-1:2004The section parameter is determined as follows.Where: twis the web thickness tfis the flange thickness bfis the breadth of the bottom flange hs= h p tf h is the depth of the sectionNA.2.9 Partial factor, *V BS EN 1994-1-1:2004, 6.6.3.1(1)The recommended values are given in NA.2.3.NA.
13、2.10 Splitting forces in the direction of the slab thickness BS EN 1994-1-1:2004, 6.6.3.1(3)Where studs are arranged such that splitting forces occur in the direction of the slab thickness the guidance given in Annex C of BS EN 1994-2:2005 can be used.NA.2.11 Means of anchorage for non-continuous sh
14、eeting BS EN 1994-1-1:2004, 6.6.4.1(3)The means of providing appropriate anchorage is given in Clause NA.4.NA.2.12 Partial factor, *Mf,s BS EN 1994-1-1:2004, 6.8.2(1)Use the recommended value.NA.2.13 Partial factor, *Ff BS EN 1994-1-1:2004, 6.8.2(2)Use a value for *Ffof 1.00.NA.2.14 Limit for narrow
15、ly spaced webs, br/bs BS EN 1994-1-1:2004, 9.1.1(2)Use the recommended value.1twhs4bftf-+hstw-0.75 tfbf-0.25Table NA.1 Section parameter limitsSection parameter limit for steel gradeS235 S275 S355 S420 and S460Uncased web15.113.912.310.8E w 80158139Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDAR
16、DS, 29/10/2008 01:43, Uncontrolled Copy, (c) BSINA to BS EN 1994-1-1:20044 BSI 2008NA.2.15 Limit for the deflection of sheeting, $s,max BS EN 1994-1-1:2004, 9.6(2)The following limits are recommended.$s,max= L/180 but less that 20 mm where the loads from ponding are ignored see BS EN 1994-1-1:2004,
17、9.3.2(2)$s,max= L/130 but less that 30 mm where the loads from ponding are included see BS EN 1994-1-1:2004, 9.3.2(2)NA.2.16 Partial factor, *Vs BS EN 1994-1-1:2004, 9.7.3(4)The recommended values are given in NA.2.4.NA.2.17 Partial factor, *Vs BS EN 1994-1-1:2004, 9.7.3(8)The recommended values are
18、 given in NA.2.4.NA.2.18 Nominal factor, 4BS EN 1994-1-1:2004, 9.7.3(9)Use the recommended value. NA.2.19 Partial factor,*V BS EN 1994-1-1:2004, B.2.5(1)The recommended values are given in NA.2.3.NA.2.20 Partial factor, *Vs BS EN 1994-1-1:2004, B.3.6(5)The recommended values are given in NA.2.4.NA.3
19、 Decisions on the status of informative annexesBS EN 1994-1-1:2004, Annexes A, B and C may be used. NA.4 References to non-contradictory complementary informationReferences to non-contradictory complementary information can be found at www.steel-ncci.co.uk1).1)In preparationLicensed Copy: Wang Bin,
20、ISO/EXCHANGE CHINA STANDARDS, 29/10/2008 01:43, Uncontrolled Copy, (c) BSI BSI 2008 5NA to BS EN 1994-1-1:2004BibliographyStandards publicationsFor dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) appli
21、es.BS 4-1, Structural steel sections Part 1: specification for hot-rolled sectionsBS EN 1994-2:2005, Eurocode 4 Design of composite steel and concrete structures Part 2: General rules and rules for bridgesLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 29/10/2008 01:43, Uncontrolled Copy, (c)
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