1、DD CEN/TS1992-4-3:2009ICS 21.060.01; 91.080.40NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWDRAFT FOR DEVELOPMENTDesign of fasteningsfor use in concretePart 4-3: Anchor channelsThis Draft for Developmentwas published under theauthority of the StandardsPolicy and StrategyCommi
2、ttee on 30 June2009. BSI 2009ISBN 978 0 580 62637 1Amendments/corrigenda issued since publicationDate CommentsDD CEN/TS 1992-4-3:2009National forewordThis Draft for Development is the UK implementation of CEN/TS1992-4-3:2009.This publication is not to be regarded as a British Standard.It is being is
3、sued in the Draft for Development series of publications andis of a provisional nature. It should be applied on this provisional basis,so that information and experience of its practical application can beobtained.Comments arising from the use of this Draft for Development arerequested so that UK ex
4、perience can be reported to the internationalorganization responsible for its conversion to an international standard.A review of this publication will be initiated not later than 3 years afterits publication by the international organization so that a decision can betaken on its status. Notificatio
5、n of the start of the review period will bemade in an announcement in the appropriate issue of Update Standards.According to the replies received by the end of the review period,the responsible BSI Committee will decide whether to support theconversion into an international Standard, to extend the l
6、ife of theTechnical Specification or to withdraw it. Comments should be sent tothe Secretary of the responsible BSI Technical Committee at BritishStandards House, 389 Chiswick High Road, London W4 4AL.The UK participation in its preparation was entrusted to TechnicalCommittee B/525/2, Structural use
7、 of concrete.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer imm
8、unityfrom legal obligations.DD CEN/TS 1992-4-3:2009TECHNICAL SPECIFICATIONSPCIFICATION TECHNIQUETECHNISCHE SPEZIFIKATIONCEN/TS 1992-4-3May 2009ICS 21.060.01; 91.080.40English VersionDesign of fastenings for use in concrete - Part 4-3: AnchorchannelsConception-calcul des lments de fixation pour bton
9、-Partie 4-3 : Rails dancrageBemessung von Befestigungen in Beton - Teil 4-3:AnkerschienenThis Technical Specification (CEN/TS) was approved by CEN on 20 October 2008 for provisional application.The period of validity of this CEN/TS is limited initially to three years. After two years the members of
10、CEN will be requested to submit theircomments, particularly on the question whether the CEN/TS can be converted into a European Standard.CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS availablepromptly at national level in an app
11、ropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS)until the final decision about the possible conversion of the CEN/TS into an EN is reached.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic,
12、Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISA
13、TIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. CEN/TS 1992-4-3:2009: EDD CEN/TS 1992-4-3:2009CEN/TS 1992-4-3:2009 (E) 2 Contents Page Foreword
14、31 Scope 41.1 General 41.4 Anchor channel loading 41.4.3 Actions not covered 42 Normative references 43 Definitions and symbols .54 Basis of design 55 Determination of action effects 55.2 Derivation of forces acting on anchor channels 55.2.1 General 55.2.2 Tension loads .65.2.3 Shear loads .75.3 Ten
15、sion forces in a supplementary reinforcement 85.3.3 Tension loads .85.3.4 Shear loads .86 Verification of ultimate limit state by elastic analysis .96.1 General 96.2 Tension loads .96.2.1 Required verifications .96.2.2 Design of supplementary reinforcement .96.2.3 Steel failure 116.2.4 Pullout failu
16、re 116.2.5 Concrete cone failure . 126.2.6 Splitting failure 166.2.7 Blow-out failure . 176.2.8 Steel failure of the supplementary reinforcement . 186.2.9 Anchorage failure of the supplementary reinforcement in the concrete cone 196.3 Shear loads 196.3.1 Required verifications 196.3.2 Design of rein
17、forcement 196.3.3 Steel failure 216.3.4 Concrete pry-out failure . 226.3.5 Concrete edge failure . 226.3.6 Steel failure of supplementary reinforcement . 266.3.7 Anchorage failure of supplementary reinforcement in the concrete cone . 266.4 Combined tension and shear loads 276.4.1 Anchor channels wit
18、hout supplementary reinforcement . 276.4.2 Anchor channels with supplementary reinforcement. 277 Fatigue . 288 Seismic 28DD CEN/TS 1992-4-3:2009CEN/TS 1992-4-3:2009 (E) 3 Foreword This Technical Specification (CEN/TS 1992-4-3:2009) has been prepared by Technical Committee CEN/TC 250 “Structural Euro
19、codes”, the secretariat of which is held by BSI. Attention is drawn to the possibility that 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 Technical Specification CEN/TS 1
20、992-4- 3 Anchor Channels, describes the principles and requirements for safety, serviceability and durability of anchor channels for use in concrete, together with specific provisions for structures serving as base material. It is based on the limit state concept used in conjunction with a partial f
21、actor method. This Technical Specification does not provide information about the use of National Determined Parameters (NDP). CEN/TS 1992-4 Design of fastenings for use in concrete is subdivided into the following parts: Part 1: General Part 2: Headed fasteners Part 3: Anchor channels Part 4: Post-
22、installed fasteners Mechanical systems Part 5: Post-installed fasteners Chemical systems Relation to CEN/TS 1992-4-1 The principles and requirements of Part 3 of this CEN/TS are additional to those in CEN/TS 1992-4-1, all the clauses and sub-clauses of which also apply to Part 3 unless varied in thi
23、s Part. Additional information is presented under the relevant clauses/sub-clauses of CEN/TS 1992-4-1. The numbers for the clauses/sub-clauses of Part 3 continue from the number of the last relevant clauses/sub-clauses of Part 1. The above principles also apply to Figures and Tables in Part 3. Accor
24、ding to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to announce this Technical Specification: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
25、Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DD CEN/TS 1992-4-3:2009CEN/TS 1992-4-3:2009 (E) 4 1 Scope 1.1 General 1.1.6 This document relies on characteristic resistances and distances wh
26、ich are stated in a European Technical Specification. In minimum the following characteristics should be given in a European Technical Specification as base for the design methods of this CEN/TS. as,Rk,N , cs,Rk,N , ls,Rk,N , ss,Rk,N , ss,Rk,V , ls,Rk,V , flexs,Rk,M , 0sRk,M NRk,p pch, ccr,N, scr,N
27、ccr,sp, scr,sp cmin, smin, hmin limitations on concrete strength classes of base material k5 Ah, bch, d, hef, hch, Iy Mipartial factors for material see also CEN/TS 1992-4-1:2009, clause 4 1.4 Anchor channel loading 1.4.3 Actions not covered The following actions are not covered by this CEN/TC: shea
28、r in the direction of the longitudinal axis of the channel; fatigue loading; seismic loading. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and t
29、he publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. NOTE
30、 The following references to Eurocodes are references to European Standards and European Prestandards. These are the only European documents available at the time of publication of this TS. National documents take precedence until Eurocodes are published as European Standards. EN 1992-1-1, Design of
31、 concrete structures Part 1-1: General rules and rules for buildings DD CEN/TS 1992-4-3:2009CEN/TS 1992-4-3:2009 (E) 5 CEN/TS 1992-4-1:2009, Design of fastenings for use in concrete Part 4-1: General 3 Definitions and symbols The definitions and symbols are given in CEN/TS 1992-4-1. 4 Basis of desig
32、n 4.5.4 The following assumptions in respect to installation have been made in this CEN/TS. The installation instructions should reflect them: 1) The anchor channel should be fixed to the formwork or auxiliary constructions in a way that no movement of the anchor channel will occur during placing of
33、 reinforcement or during pouring and compacting of the concrete. 2) Requirements for adequate compaction particularly under the head of the anchor and under the channel. 3) Requirements for inspection and approval of the correct installation of the anchor channels by appropriately qualified personne
34、l. 4) Placing anchor channels by only pushing them into the wet concrete is not allowed. 5) It is accepted to vibrate the anchor channels into the wet concrete immediately after pouring under the following conditions: The size and number of fastenings is limited to anchor channels with a length of 0
35、,5 hef b most loaded anchor or special screwcthe load on the anchor in conjunction with the edge distance and spacing should be considered in determining the most unfavourable anchor The supplementary reinforcement to take up tension loads should comply with the following requirements (see also Figu
36、re 4): a) In general, for all anchors of a channel the same diameter of the reinforcement should be provided. It should consist of ribbed reinforcing bars (fyk 500 N/mm2) with a diameter dsnot larger than 16 mm and should be detailed in form of stirrups or loops with a mandrel diameter according to
37、EN 1992-1-1. b) The supplementary reinforcement should be placed as close to the anchors as practicable to minimise the effect of eccentricity associated with the angle of the failure cone. Preferably, the supplementary reinforcement should enclose the surface reinforcement. Only these reinforcement
38、 bars with a distance 0,75 hef, from the anchor should be assumed as effective. c) The minimum anchorage length of supplementary reinforcement in the concrete failure cone is s4 dl =1min (anchorage with bends, hooks or loops) or sdl 10min1= (straight bars with or without welded transverse bars). d)
39、The supplementary reinforcement should be anchored outside the assumed failure cone with an anchorage length lbd according to EN 1992-1-1. e) A surface reinforcement should be provided as shown in Figure 4a) designed to resist the forces arising from the assumed strut and tie model, taking into acco
40、unt the splitting forces according to 6.2.6. DD CEN/TS 1992-4-3:2009CEN/TS 1992-4-3:2009 (E) 11 For anchors channels located parallel to the edge of a concrete member or in a narrow concrete member, the plane of the supplementary reinforcement shall be located perpendicular to the longitudinal axis
41、of the channel (see Figure 4). Key 1 supplementary reinforcement 2 surface reinforcement Figure 4 Arrangement of supplementary reinforcement 6.2.3 Steel failure The characteristic resistances as,Rk,N (failure of anchor), cs,Rk,N (failure of the connection between anchor and channel), ls,Rk,N (local
42、failure by flexure of the channel lips), sRk,N (failure of the special screw) and flexs,Rk,M (failure by flexure of the channel) are given in the relevant European Technical Specification. 6.2.4 Pullout failure The characteristic resistancepRk,N for pullout failure of the anchor is given in the rele
43、vant European Technical Specification. NOTE The characteristic resistance pRk,N is limited by the concrete pressure under the head of the anchor according to Equation (5): Nucr,cubeck,hpRk,6 fAN = (5) with Ahload bearing area of the head of the anchor = ()22h4dd in case of a round head (6) fck,cube
44、characteristic cube strength of the concrete strength class but noting the limitations given in the relevant European Technical Specification. DD CEN/TS 1992-4-3:2009CEN/TS 1992-4-3:2009 (E) 12 Nucr, = 1,0 for anchor channels in cracked concrete = 1,4 for anchor channels in non-cracked concrete 6.2.
45、5 Concrete cone failure 6.2.5.1 Characteristic resistance The characteristic resistance of one anchor of a channel bar in case of concrete cone failure may be calculated according to Equation (7). NRk, c= 0cRk,N s, N e, N c, N re, N ucr, N (7) The different factors in Equation (7) are given in the f
46、ollowing sections. 6.2.5.2 Basic characteristic resistance of an anchor The basic characteristic resistance of one anchor not influenced by adjacent anchors, edges or corners of the concrete member located in cracked concrete is obtained by: N5851efcubeck,ch0cRk,hf,N = (8) with chfactor taking into
47、account the influence of the channel on the concrete cone failure load. It is given in the relevant European Technical Specification. 1 fck,cubeN/mm, characteristic cube strength of the concrete strength class but noting the limitations given in the relevant European Technical Specification. hefmm 6
48、.2.5.3 Effect of neighbouring anchors The influence of neighbouring anchors on the concrete cone resistance is taken into account by the factor s, Naccording to Equation (9). =+=ni,NNss10i51Ncr,iNs,111(9) with (see Figure 5): sidistance between the anchor under consideration and the neighbouring anc
49、hors scr,N scr, N = 2 (2,8 1,3 hef /180) hef 3 hef(10) Nitension force of an influencing anchor DD CEN/TS 1992-4-3:2009CEN/TS 1992-4-3:2009 (E) 13 N0tension force of the anchor under consideration n number of anchors within a distance scr,N to both sides of the anchor under consideration Key 1 anchor un
