1、BRITISH STANDARD BS EN 13271:2002 Incorporating Corrigendum No. 1 Timber fasteners Characteristic load-carrying capacities and slip-moduli for connector joints The European Standard EN 13271:2001 has the status of a British Standard ICS 91.080.20; 21.060 BS EN 13271:2002 This British Standard, havin
2、g been prepared under the direction of the Building and Civil Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 25 January 2002 BSI 19 December 2003 ISBN 0 580 38919 7 National foreword This British Standard is the o
3、fficial English language version of EN 13271:2001, including corrigendum September 2003. The UK participation in its preparation was entrusted to Technical Committee B/518, Structural timber, which has the responsibility to: A list of organizations represented on this committee can be obtained on re
4、quest to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI
5、 Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirer
6、s to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This documen
7、t comprises a front cover, an inside front cover, the EN title page, pages 2 to 14, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 14849 Corrigendum No.
8、 1 19 December 2003 Corrections to 4, 5.4, 6.2 and 6.4 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13271 November 2001 ICS 21.060.99; 91.080.20 Incorporating corrigendum September 2003 English version Timber fasteners Characteristic load-carrying cpacities and slip-moduli for connector join
9、ts Elments de fixation du bois Valeurs caractristiques de capacit rsistance et du module de glissement des assembleurs mcaniques du bois Holzverbindungsmittel Charakteristische Trgfahigkeiten und Verschiebungsmoduln fr Verbindungen mit D beln besonderer Bauart This European Standard was approved by
10、CEN on 4 October 2001. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standar
11、ds may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the
12、Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United King
13、dom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13271:2001 EEN 13
14、271:2001 (E) 2 Contents page Foreword3 1 Scope4 2 Normative references4 3 Terms and definitions .4 4 Symbols and abbreviations4 5 Ring and shear plate connector joints5 5.1 Connector types5 5.2 Characteristic load-carrying capacities .5 5.3 Additional reference conditions.6 5.4 Characteristic slip m
15、oduli 6 6 Toothed-plate connector joints7 6.1 Connector types7 6.2 Characteristic load-carrying capacities .7 6.3 Additional reference conditions.8 6.4 Characteristic slip moduli 8 Annex A (normative) Determination of load-carrying capacities of ring and shear plate connector joints 10 Annex B (norm
16、ative) Determination of load-carrying capacities of toothed-plate connector joints.12 EN 13271:2001 (E) 3 Foreword This European Standard has been prepared by Technical Committee CEN/TC 124, “Structural timber“, the secretariat of which is held by DS. This European Standard shall be given the status
17、 of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2002, and conflicting national standards shall be withdrawn at the latest by May 2002. This standard is one of a series of standards for building materials. It was prepared by a working group
18、under the convenorship of DIN, Germany. It is recognized that the characteristic load-carrying capacities of connector units defined in this standard will be interpreted with respect to design, structural detailing, and control, by reference to ENV 1995-1-1. The annexes A and B are normative. Accord
19、ing to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,
20、 Spain, Sweden, Switzerland and the United Kingdom. EN 13271:2001 (E) 4 1 Scope This European Standard specifies relationships for the determination of load-carrying capacities of connector joints in timber structures and appertaining reference conditions. It also gives recommendations for character
21、istic values for slip moduli for joints in solid timber (in accordance with EN 338) or glued laminated timber (in accordance with EN 1194). 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cit
22、ed at the appropriate places in the text, and the 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 editi
23、on of the publication referred to applies (including amendments). EN 338, Structural timber Strength classes. EN 912, Timber fasteners Specifications for connectors for timber. EN 1194, Timber structures Glued laminated timber Strength classes and determination of characteristic values. EN 26891, Ti
24、mber structures Joints made with mechanical fasteners General principles for the determination of strength and deformation characteristics (ISO 6891:1983). ENV 1995-1-1, Eurocode 5: Design of timber structures - Part 1-1: General rules and rules for buildings. 3 Terms and definitions For the purpose
25、s of this European Standard the following term and definition apply. 3.1 connector unit - one ring connector with its bolt in single shear in a timber-to-timber joint, or - two plate connectors used back-to-back with the bolt in single shear in a timber-to-timber joint, or - one double-sided toothed
26、-plate connector or two single-sided toothed-plate connectors used back-to-back with the bolt in single shear in a timber-to-timber joint 4 Symbols and abbreviations R b,o,kcharacteristic load-carrying capacity of the bolt for = 0 , in newtons R b, ,kcharacteristic load-carrying capacity of the bolt
27、 for 0 , in newtons R c,kcharacteristic load-carrying capacity of one toothed-plate connector, in newtons R c,0,kcharacteristic load-carrying capacity of a ring or shear plate connector joint per connector unit for = 0 , in newtons R ,j,0,k characteristic load-carrying capacity of a toothed-plate co
28、nnector joint per connector unit for = 0 , in newtons EN 13271:2001 (E) 5 R j, ,kcharacteristic load-carrying capacity of a toothed plate connector joint per connector unit for 0 , in newtons a 3,tloaded end distance, in millimetres a 3,cunloaded end distance, in millimetres a 4edge distance (loaded
29、 or unloaded), in millimetres a 4,tloaded edge distance, in millimetres a 4,cunloaded edge distance, in millimetres d bbolt diameter, in millimetres d cconnector diameter, in millimeters d 1hole diameter of connector, in millimeters h edepth of the connector embedment or tooth penetration depth, res
30、pectively, in millimeters t 1side member thickness, in millimeters t 2middle member thickness, in millimeters k sercharacteristic slip modulus (mean value), in Newtons per millimeter k a3modification factor a 3,tk tmodification factor for t 1and for t 2k modification factor for k modification factor
31、 for k angle between load and grain direction, in degrees kcharacteristic density of the timber strength class, in kilogram per cubic metre 5 Ring and shear plate connector joints 5.1 Connector types The following recommendations relate to connector joints with connectors of type A and type B as spe
32、cified in EN 912. 5.2 Characteristic load-carrying capacities The characteristic load-carrying capacity of a ring or shear plate connector unit is related to the following reference conditions: = 0 (1a) a 3,t= 2 d c(1b) a 4= 0,6 d c(1c) EN 13271:2001 (E) 6 t 1= 3 h e(1d) t 2= 5 h e(1e) k= 350 kg/m 3
33、(1f) The characteristic load-carrying capacity per connector unit is given by e k o c h d d R = c 5 , 1 c , , 5 , 31 35 min (2a) (2b) with R c,0,kin N, d cand h ein mm. Other conditions than those given in equations (1a to 1f) according to annex A. 5.3 Additional reference conditions The characteris
34、tic load-carrying capacities given in equations (2a and 2b) are related to connector units with bolts according to Table 1. Table 1 - Requirements for the bolts in ring and shear plate connector joints Type of connector d cd bmm min. mm max. mm A1 to A 5 130 12 24 A 1, A4, A5 130 0,1 d c24 B d 1 -1
35、d 1Washers with a side length or a diameter of at least 3 d band a thickness of at least 0,3 d b should be used under the head and nut. Washers should have a full bearing area. 5.4 Characteristic slip moduli The characteristic slip modulus k seris given by k ser= 0,6 d c k (3) with k serin N/ mm, d
36、cin mm and kin kg/m 3 . EN 13271:2001 (E) 7 6 Toothed-plate connector joints 6.1 Connector types The following recommendations relate to connector joints with connectors of type C as specified in EN 912. 6.2 Characteristic load-carrying capacities The characteristic load-carrying capacity of a tooth
37、ed-plate connector unit is related to the following reference conditions = 0 (4a) a 3,t= 1,5 d c (4b) for types C1 to C9 a 3,t= 2 d c(4c) For types C10 and C11 a 4= 0,6 d c(4d) t 1= 3 h e(4e) t 2= 5 h e(4f) k= 350 kg/m 3 (4g) Other conditions than given in equations (4a to 4g) according to annex B.
38、The characteristic load-carrying capacity per connector unit is given by R j,0,k= R c,k + R b,0,k(5) where R c,k= 5 , 1 18 c d (6) for types C1 to C9 R c,k= 5 , 1 25 c d (7) for types C10 and C11. with R c,k in N and d cin mm. In equation (6) is d d c = for types C5, C8 and C9 EN 13271:2001 (E) 8 2
39、1 a a d c = for types C3 and C4 with the values of d, a 1 , and a 2as given in EN 912. R b,0,k is the characteristic load-carrying capacity of the bolt according to ENV 1995-1-1. 6.3 Additional reference conditions The characteristic load-carrying capacities given in equations (5), (6) and (7) are r
40、elated to connector units with bolts according to Table 2. Table 2 - Requirements for the bolts in toothed-plate connector joints Type of connector d bmin. mm max. mm C1,d c 75 mm 10 d 1C1, d c 95 mm 10 30 C2 d 1 1 d 1C3 12 d 1C4 d 1 1 d 1C5 10 30 C6 10 d 1C7 d 1 1 d 1C8 10 d 1C9 d 1 1 d 1C10 10 30
41、C11 d 1 1 d 1Washers with a side length or a diameter of at least 3 d band a thickness of at least 0,3 d bshould be used under the head and nut. Washers should have a full bearing area. 6.4 Characteristic slip moduli The characteristic slip modulus k ser is given by k c d k = 3 , 0 ser(8) EN 13271:2
42、001 (E) 9 For types C1 to C9 k c d k = 45 , 0 ser(9) For types C10 and C11. with k ser in N/mm 2and d cin mm and kin kg/m 3 . In equation (8) is d d c = for types C5, C8 and C 9 2 1 a a d c = for types C3 and C4. with the values of d, a 1and a 2as given in EN 912. EN 13271:2001 (E) 10 Annex A (norma
43、tive) Determination of load-carrying capacities of ring and shear plate connector joints A.1 General This annex gives relationships for the determination of load-carrying capacities of ring and shear plate connector joints in timber structures for conditions others than given in 5.2, equations (1a t
44、o 1f). A.2 Characteristic load-carrying capacities The characteristic load-carrying capacity of a ring or shear plate connector unit is given by t t a e c c k c k k k k k k h k d d R = 3 5 , 1 , 0 , 5 , 31 35 . min (A.1b) (A.1a)where 2 2 90 cos sin 1 + = k k (A.2) with c d k 001 , 0 3 , 1 90 + = (A.
45、3) = 350 75 , 1 . min k k (A.4b) (A.4a) = c t a d a k 2 25 , 1 . min , 3 3(A.5b) (A.5a)k a3should only be used for connector joints loaded in tension, i.e. -30 30 a 3,t 1,5 d cshould not be used. EN 13271:2001 (E) 11 = e e t h t h t k 5 3 1 . min 2 1(A.6c) ) 6 . ( (A.6a) b A where t a 2,25 h e and t
46、 2 3,75 h eA.3 Additional requirements Minimum requirements for the end distance a 3 , c(unloaded) and for the edge distance a 4are as follows: a 3,c= 1,2d cfor 150 210 (A.7) a 3,c= (0,4 + 1,6 |sin |)d cfor 90 150 (A.8) and for 210 270 a 4 , t= (0,6 + 0,2 sin )d cfor 0 180 (A.9) a 4,c = 0,6 d cfor a
47、ll other values of (A.10) For the symbols used in this annex see clause 4. EN 13271:2001 (E) 12 Annex B (normative) Determination of load-carrying capacities of toothed-plate connector joints B.1 General This annex gives relationships for the determination of load-carrying capacities of toothed-plat
48、e connector joints in timber structures for conditions others than given in 6.2, equations (4a to 4g). B.2 Characteristic load-carrying capacities The characteristic load-carrying capacity of a toothed-plate connector unit is given by k b a t ck k j R k k k R R , , 3 , , + = (B.1) where = 350 50 , 1 . min k k (B.2b) (B.2a) = e e t h t h t k 5 3 1 . min 2 1(B.3c) ) . 3 . ( (B.3a) b B with t 1 2,25 h eand t 2 3,75 h eFor type C1 to C9: = c t a d a k 5 , 1 1 . min , 3 3(B.4b) (B.4a)where a 3,tshould have
