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1、NA to BS EN 1994-1-1:2004 UK National Annex to Eurocode 4: Design of composite steel and concrete structures Part 1-1: General rules and rules for buildings ICS 91.010.30; 91.080.10; 91.080.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW NATIONAL ANNEX Licensed CopyChinese
2、University of Hong Kong, 21/10/2008 03:04, Uncontrolled Copy, (c) BSI Publishing and copyright information The BSI copyright notice displayed in this document indicates when the document was last issued. BSI 2008 ISBN 978 0 580 54981 6 The following BSI references relate to the work on this standard
3、: Committee reference B/525/4 Draft for comment 07/30128172 DC Publication history First published August 2008 Amendments issued since publication Amd. no.DateText affected NA to BS EN 1994-1-1:2004 Licensed CopyChinese University of Hong Kong, 21/10/2008 03:04, Uncontrolled Copy, (c) BSI BSI 20081
4、NA to BS EN 1994-1-1:2004 National 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 buildings Introduction This 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 Scope This 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
6、.1(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; and c)references to non-contradictory complementary information. Licensed CopyChinese University of Hong Kong, 21/10/2008 03:04
7、, Uncontrolled Copy, (c) BSI NA to BS EN 1994-1-1:2004 2 BSI 2008 NA.2 Nationally Determined Parameters NA.2.1General UK 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.2.2Partial factor, * *p BS EN 1994-1-1:2004, 2.4.1.1(1) Use
8、recommended value. NA.2.3Partial factor, * *V BS EN 1994-1-1:2004, 2.4.1.2(5) The value of gamma *V may 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 in
9、formation (see NA.4) would justify the use of an alternative value. NA.2.4Partial factor, * *VS BS EN 1994-1-1:2004, 2.4.1.2(6) Use the recommended value. NA.2.5Partial factor, * *Mf,s BS EN 1994-1-1:2004, 2.4.1.2(7) Use the recommended value. NA.2.6Shrinkage of concrete BS EN 1994-1-1:2004, 3.1(4)
10、Use Annex C of BS EN 1994-1-1:2004 for the dry shrinkage of concrete. NA.2.7Nominal 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.2.8Other types of steel section BS EN 1994-1-1:2004, 6.4.3(1)(h) For BS 4-1 o
11、r similar I 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 CopyChinese University of Hong Kong, 21/10/2008 03:04, Uncontrolled Copy, (c) BSI BSI 20083 NA to
12、 BS EN 1994-1-1:2004 The section parameter is determined as follows. Where: tw is the web thickness tf is the flange thickness bf is the breadth of the bottom flange hs = h p tf h is the depth of the section NA.2.9Partial factor, * *V BS EN 1994-1-1:2004, 6.6.3.1(1) The recommended values are given
13、in NA.2.3. NA.2.10Splitting 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.2.11Means of anchorage for non
14、-continuous sheeting BS EN 1994-1-1:2004, 6.6.4.1(3) The means of providing appropriate anchorage is given in Clause NA.4. NA.2.12Partial factor, * *Mf,s BS EN 1994-1-1:2004, 6.8.2(1) Use the recommended value. NA.2.13Partial factor, * *Ff BS EN 1994-1-1:2004, 6.8.2(2) Use a value for *Ff of 1.00. N
15、A.2.14Limit for narrowly spaced webs, br/bs BS EN 1994-1-1:2004, 9.1.1(2) Use the recommended value. 1 twhs 4bftf - -+ hs tw - 0.75tf bf - - 0.25 Table NA.1Section parameter limits Section parameter limit for steel grade S235S275S355S420 and S460 Uncased web15.113.912.310.8 Encased web15.118.015.813
16、.9 Licensed CopyChinese University of Hong Kong, 21/10/2008 03:04, Uncontrolled Copy, (c) BSI NA to BS EN 1994-1-1:2004 4 BSI 2008 NA.2.15Limit 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 load
17、s from ponding are ignored see BS EN 1994-1-1:2004, 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.2.16Partial factor, * *Vs BS EN 1994-1-1:2004, 9.7.3(4) The recommended values are given in NA.2.4. NA.2.17Partial factor, *
18、*Vs BS EN 1994-1-1:2004, 9.7.3(8) The recommended values are given in NA.2.4. NA.2.18Nominal factor, 4 4 BS EN 1994-1-1:2004, 9.7.3(9) Use the recommended value. NA.2.19Partial factor,* *V BS EN 1994-1-1:2004, B.2.5(1) The recommended values are given in NA.2.3. NA.2.20Partial factor, * *Vs BS EN 19
19、94-1-1:2004, B.3.6(5) The recommended values are given in NA.2.4. NA.3 Decisions on the status of informative annexes BS EN 1994-1-1:2004, Annexes A, B and C may be used. NA.4 References to non-contradictory complementary information References to non-contradictory complementary information can be f
20、ound at www.steel-ncci.co.uk1). 1) In preparation Licensed CopyChinese University of Hong Kong, 21/10/2008 03:04, Uncontrolled Copy, (c) BSI BSI 20085 NA to BS EN 1994-1-1:2004 Bibliography Standards publications For dated references, only the edition cited applies. For undated references, the lates
21、t edition of the referenced document (including any amendments) applies. BS 4-1, Structural steel sections Part 1: specification for hot-rolled sections BS EN 1994-2:2005, Eurocode 4 Design of composite steel and concrete structures Part 2: General rules and rules for bridges Licensed CopyChinese Un
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