1、DD CEN/TS1992-4-4:2009ICS 21.060.99; 91.080.40NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWDRAFT FOR DEVELOPMENTDesign of fasteningsfor use in concretePart 4-4: Post-installed fasteners Mechanical systemsThis Draft for Developmentwas published under theauthority of the Stand
2、ardsPolicy and StrategyCommittee on 30 June2009. BSI 2009ISBN 978 0 580 62638 8Amendments/corrigenda issued since publicationDate CommentsDD CEN/TS 1992-4-4:2009National forewordThis Draft for Development is the UK implementation of CEN/TS1992-4-4:2009.This publication is not to be regarded as a Bri
3、tish Standard.It is being issued 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 Developmen
4、t arerequested so that UK experience 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 betake
5、n on its status. Notification 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 internation
6、al Standard, to extend the life 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 TechnicalCommi
7、ttee B/525/2, Structural use 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 Britis
8、h Standard cannot confer immunityfrom legal obligations.DD CEN/TS 1992-4-4:2009TECHNICAL SPECIFICATIONSPCIFICATION TECHNIQUETECHNISCHE SPEZIFIKATIONCEN/TS 1992-4-4May 2009ICS 21.060.99; 91.080.40English VersionDesign of fastenings for use in concrete - Part 4-4: Post-installedfasteners - Mechanical
9、systemsConception-calcul des lments de fixation pour bton -Partie 4-4 : Chevilles de fixation - Systmes mcaniquesBemessung von Befestigungen in Beton - Teil 4-4: Dbel -mechanische SystemeThis Technical Specification (CEN/TS) was approved by CEN on 20 October 2008 for provisional application.The peri
10、od of validity of this CEN/TS is limited initially to three years. After two years the members of 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
11、 in the same way as for an EN and to make the CEN/TS availablepromptly at national level in an appropriate 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
12、 members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Swede
13、n, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES 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
14、. CEN/TS 1992-4-4:2009: EDD CEN/TS 1992-4-4:2009CEN/TS 1992-4-4:2009 (E) 2 Contents Page Foreword 31 Scope 41.1 General 42 Normative references 43 Definitions and symbols .54 Basis of design 55 Determination of action effects 56 Verification of ultimate limit state by elastic analysis .66.1 General
15、66.2 Design method A .76.2.1 Tension load .76.2.2 Shear load 146.2.3 Combined tension and shear load 236.3 Design method B 246.4 Design method C 257 Fatigue . 258 Seismic 25DD CEN/TS 1992-4-4:2009CEN/TS 1992-4-4:2009 (E) 3 Foreword This Technical Specification (CEN/TS 1992-4-4:2009) has been prepare
16、d by Technical Committee CEN/TC 250 “Structural Eurocodes”, 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
17、patent rights. This Technical Specification CEN/TS 1992-4-4 Post-installed fasteners Mechanical systems, describes the principles and requirements for safety, serviceability and durability of post-installed fasteners with mechanical anchorage systems for use in concrete. Furthermore bonded expansion
18、 anchors and bonded undercut anchors are covered. This Technical Specification does not provide information about the use of National Determined Parameters (NDP). CEN/TS 1992-4-4 is based on the limit state concept used in conjunction with a partial factor method. CEN/TS 1992-4 Design of fastenings
19、for use in concrete is subdivided into the following parts: Part 1: General Part 2: Headed fasteners Part 3: Anchor channels Part 4: Post-installed fasteners Mechanical systems Part 5: Post-installed fasteners Chemical systems Connection to Part 1 of this Technical Specification TS The principles an
20、d requirements of Part 4 of this CEN/TS are additional to those in Part 1, all the clauses and sub-clauses of which also apply to Part 4 unless varied in this Part. Additional information is presented under the relevant clauses/sub-clauses of Part 1 of the CEN/TS. The numbers for the clauses/sub-cla
21、uses of Part 4 continue from the number of the last relevant clauses/subclauses of Part 1. The above principles also apply to Figures and Tables in Part 4. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to announce this Te
22、chnical Specification: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, 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 th
23、e United Kingdom. DD CEN/TS 1992-4-4:2009CEN/TS 1992-4-4:2009 (E) 4 1 Scope 1.1 General 1.1.6 This document relies on characteristic resistances and distances which are stated in a European Technical Specification. The characteristic values shown in Table 1 should be obtained from the relevant Europ
24、ean Technical Specification as base for the design methods of this CEN/TS. Table 1 Characteristics used for the design of fasteners given in the European Technical Specification Characteristic Design methodA B C NRk,p, NRk,s, VRk,sx 0sRk,M x x x FRd, uncracked concrete x x FRd, cracked concretea)x c
25、cr,N, scr,Nx ccr,sp, scr,spccr, scrx x cmin, sminx x hminx x x limitations on concrete strength classes of base material x x x kcr, kucr, k2, k3,k4x dnom, hef, lfMib)x x x a)only for products suitable to applications in cracked and non-cracked concrete b)recommended partial factors for material see
26、also CEN/TS 1992-4-1:2009, clause 4 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 the publications are listed hereafter. For dated references
27、, 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 The following references to Eurocodes are references to E
28、uropean 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. DD CEN/TS 1992-4-4:2009CEN/TS 1992-4-4:2009 (E) 5 EN 1992-1-1, Eurocode 2: Desig
29、n of concrete structures Part 1-1: General rules and rules for buildings CEN/TS 1992-4-1:2009, Design of fastenings for use in concrete Part 4-1: General 3 Definitions and symbols Definitions and symbols are given in CEN/TS 1992-4-1. 4 Basis of design 4.5.4 The following assumptions in respect to in
30、stallation have been made in this CEN/TS. The installation instructions should reflect them: 1) Concrete has been compacted adequately in the area of the fastening. This should be checked prior and during installation via visual check. 2) Requirements for drilling operation and bore hole: Holes are
31、drilled perpendicular to the surface of the concrete unless specifically required otherwise by the manufacturers instructions. Drilling is carried out by method specified by the manufacturer. When hard metal hammer-drill bits are used, they should comply with ISO or National Standards. When diamond
32、core drilling is permitted, the diameter of the segments should comply with the prescribed diameter. Reinforcement in close proximity to the holes position is not damaged during drilling. In prestressed concrete structures it is ensured that the distance between the drilling hole and the prestressed
33、 reinforcement is at least 50mm; for determination of the position of the prestressed reinforcement in the structure a suitable device e.g. a reinforcement detector is used. Holes are cleaned according to the instructions given in the European Technical Specification. Aborted drill holes are filled
34、with high strength non-shrinkage mortar. 3) Inspection and approval of the correct installation of the fasteners is carried out by appropriately qualified personnel. NOTE Many drill bits exhibit a mark indicating that they are in accordance with ISO or National Standards. If the drillbits do not bea
35、r a conformity mark, evidence of suitability should be provided. 5 Determination of action effects The determination and analysis of the condition of the concrete cracked or non-cracked serving as base material for the fastener and of the loads acting on the fastener is given in CEN/TS 1992-4-1:2009
36、, clause 5. DD CEN/TS 1992-4-4:2009CEN/TS 1992-4-4:2009 (E) 6 6 Verification of ultimate limit state by elastic analysis 6.1 General 6.1.5 This section applies when forces on the fasteners have been calculated using elastic analysis. CEN/TS 1992-4-1:2009, Annex B should be used for plastic analysis.
37、 6.1.6 For the design of post-installed fasteners in the ultimate limit state, there are three different design methods available. The methods differ in the degree of simplification at the expense of conservatism: Method A: Resistance is established for all load directions and all modes of failure,
38、using actual values of edge distance c to the fasteners and spacing s between fasteners in a group. Method B: A single value of resistance is used for all load directions and modes of failure. This resistance is related to the characteristic values ccrand scr. It is permitted to use smaller values f
39、or c and s than these but the resistance should then be modified as indicated. Method C: As method B but the values of c and s should not be less than ccrand scr. Each method has further options with regard to a) use of fasteners in cracked and non-cracked or uncracked concrete; and b) the concrete
40、strength class for which the resistance is valid. The above possibilities (assessment options) are summarized in Table 2 and described in detail in 6.2 to 6.4. The design method to be applied is given in the relevant European Technical Specification. With design method A technical data may be publis
41、hed also for design methods B or C and with method B also for design method C. But data for method C do not support method A or B and data for method B do not support design method A. 6.1.7 The spacing between outer fasteners of adjoining groups or the distance to single fasteners shall be a scr,N(d
42、esign method A) or scrrespectively (design methods B and C). 6.1.8 Aborted drill holes filled with high strength non-shrinkage mortar do not have to be considered in the design of the fastenings. Increasing simplificationand conservatismDD CEN/TS 1992-4-4:2009CEN/TS 1992-4-4:2009 (E) 7 Table 2 Asses
43、sment options for post-installed fasteners Design method Use for FRkccrscrcminsminOption No2)cracked and non-cracked concrete non-cracked concrete only one FRkfor C20/25 only different FRkfor C20/25 to C50/60 one FRkfor all load directions different FRkdepen-ding on load directionA x1)x x x x x x 1
44、x x x x x x x 2 B x x x x x x x 3 x x x x x x x 4 C x x x x x 5 x x x x x 6 A x x x x x x x 7 x x x x x x x 8 B x x x x x x x 9 x x x x x x x 10 C x x x x x 11 x x x x x 12 1) x applies to the design method 2)according to European Technical Specification 6.2 Design method A 6.2.1 Tension load 6.2.1.
45、1 Required verifications The required verifications are given in Table 3. Table 3 Verification for post-installed mechanical fasteners loaded in tension Single fastener Fastener groupmost loaded fastener fastener group1)1 Steel failure NEd NRd,s= NRk,s/ MshEdN NRd,s= NRk,s/ Ms,s2 Pull-out NEd NRd,p=
46、 NRk,p/ MphEdN NRd,p= NRk,p/ Mp3 Concrete cone failure NEd NRd,c= NRk,c/ McgEdN NRd,c= NRk,c/ Mc4 Splitting failure NEd NRd,sp= NRk,sp/ MspgEdN NRd,sp= NRk,sp/ Msp1)Verification is performed only for the fasteners of a group loaded in tension. 6.2.1.2 Steel failure The characteristic resistance of a
47、 fastener in case of steel failure NRk,sis given in the relevant European Technical Specification. The strength calculations are based on ukf . DD CEN/TS 1992-4-4:2009CEN/TS 1992-4-4:2009 (E) 8 6.2.1.3 Pull-out failure The characteristic resistance in case of pull-out failure NRk,pis given in the re
48、levant European Technical Specification. 6.2.1.4 Concrete cone failure The characteristic resistance of a fastener, a group of fasteners and the tensioned fasteners of a group of fasteners in case of concrete cone failure may be obtained by Equation (1). Nec,Nre,Ns,oNc,Nc,ocRk,cRk, =AANN N (1) The d
49、ifferent factors of Equation (1) are given below. a) Characteristic resistance of a single fastener 1) Cracked concrete: The characteristic resistance of a single fastener placed in cracked concrete and not influenced by adjacent fasteners or edges of the concrete member is obtained by: 1,5efcubeck,crocRk,hfkN = N (2) where kcrfactor to take into account the influence of load transfer mechanisms for applica
