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1、a Date: 16 January 2009 Origin: International Latest date for receipt of comments: 30 April 2009 Project no.: 2008/03624 Responsible committee: B/518 Structural timber Interested committees: Title: Draft BS ISO 21581 Timber structures - Static and cyclic lateral load testing of shear walls Supersess
2、ion information: If this document is published as a standard, the UK implementation of it will supersede NONE and partially supersede. NONE If you are aware of a current national standard which may be affected, please notify the secretary (contact details below). WARNING: THIS IS A DRAFT AND MUST NO
3、T BE REGARDED OR USED AS A BRITISH STANDARD. THIS DRAFT IS NOT CURRENT BEYOND 30 April 2009. This draft is issued to allow comments from interested parties; all comments will be given consideration prior to publication. No acknowledgement will normally be sent. See overleaf for information on commen
4、ting. No copying is allowed, in any form, without prior written permission from BSI except as permitted under the Copyright, Designs and Patent Act 1988 or for circulation within a nominating organization for briefing purposes. Electronic circulation is limited to dissemination by e-mail within such
5、 an organization by committee members. Further copies of this draft may be purchased from BSI Customer Services, Tel: +44(0) 20 8996 9001 or email . British, International and foreign standards are also available from BSI Customer Services. Information on the co-operating organizations represented o
6、n the committees referenced above may be obtained from the responsible committee secretary. Cross-references The British Standards which implement International or European publications referred to in this draft may be found via the British Standards Online Service on the BSI web site http:/. Direct
7、 tel: Responsible Committee Secretary: Mr M Awaleh (BSI) E-mail: Draft for Public Comment Head Office 389 Chiswick High Road London W4 4AL Telephone: +44(0)20 8996 9000 Fax: +44(0)20 8996 7001 Form 36 Version 8.0 DPC: 09/30192433 DC Licensed Copy: London South Bank University, South Bank University
8、, 02/02/2009 03:46, Uncontrolled Copy, (c) BSI b Introduction This draft standard is based on international discussions in which the UK has taken an active part. Your comments on this draft are invited and will assist in the preparation of the consequent standard. Comments submitted will be reviewed
9、 by the relevant BSI committee before sending the consensus UK vote and comments to the international secretariat, which will then decide appropriate action on the draft and the comments received. If the international standard is approved, it is possible the text will be published as an identical Br
10、itish Standard. UK Vote Please indicate whether you consider the UK should submit a negative (with reasons) or positive vote on this draft. Submission The guidance given below is intended to ensure that all comments receive efficient and appropriate attention by the responsible BSI committee. Annota
11、ted drafts are not acceptable and will be rejected. All comments must be submitted, preferably electronically, to the Responsible Committee Secretary at the address given on the front cover. Comments should be compatible with Version 6.0 or Version 97 of Microsoft Word for Windows, if possible; othe
12、rwise comments in ASCII text format are acceptable. Any comments not submitted electronically should still adhere to these format requirements. All comments submitted should be presented as given in the example below. Further information on submitting comments and how to obtain a blank electronic ve
13、rsion of a comment form are available from the BSI web site at: http:/ Template for comments and secretariat observations Date: xx/xx/200x Document: ISO/DIS xxxxx 1 2 (3) 4 5 (6) (7) MB Clause No./ Subclause No./ Annex (e.g. 3.1) Paragraph/ Figure/Table/ Note (e.g. Table 1) Type of com- ment Comment
14、 (justification for change) by the MB Proposed change by the MB Secretariat observations on each comment submitted 3.1 Definition 1 ed Definition is ambiguous and needs clarifying. Amend to read . so that the mains connector to which no connection . 6.4 Paragraph 2 te The use of the UV photometer as
15、 an alternative cannot be supported as serious problems have been encountered in its use in the UK. Delete reference to UV photometer. Microsoft and MS-DOS are registered trademarks, and Windows is a trademark of Microsoft Corporation. Licensed Copy: London South Bank University, South Bank Universi
16、ty, 02/02/2009 03:46, Uncontrolled Copy, (c) BSI THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH. IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
17、LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS. RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF
18、ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION. DRAFT INTERNATIONAL STANDARD ISO/DIS 21581 International Organization for Standardization, 2009 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION ISO/TC 165 Voting be
19、gins on: 2009-01-08 Secretariat: SCC Voting terminates on: 2009-06-08 Timber structures Static and cyclic lateral load test method for shear walls Structures en bois Mthode dessai de charge latrale statique et cyclique sur murs de contreventement ICS 91.080.20 In accordance with the provisions of Co
20、uncil Resolution 15/1993 this document is circulated in the English language only. Conformment aux dispositions de la Rsolution du Conseil 15/1993, ce document est distribu en version anglaise seulement. To expedite distribution, this document is circulated as received from the committee secretariat
21、. ISO Central Secretariat work of editing and text composition will be undertaken at publication stage. Pour acclrer la distribution, le prsent document est distribu tel quil est parvenu du secrtariat du comit. Le travail de rdaction et de composition de texte sera effectu au Secrtariat central de l
22、ISO au stade de publication. Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:46, Uncontrolled Copy, (c) BSI ISO/DIS 21581 ii ISO 2009 All rights reserved PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this fi
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28、ect to royalty payments or a licensing agreement. Violators may be prosecuted. Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:46, Uncontrolled Copy, (c) BSI ISO/DIS 21581 ISO 2008 All rights reserved iii Contents page Foreword .iv Introductionv 1 Scope.1 2 Normativ
29、e references.1 3 Symbols and definitions1 4 Test specimens.2 4.1 Conditioning .2 4.2 Form and dimension 2 4.3 Sampling .2 5 Apparatus.2 5.1 General.2 5.2 Base of test frame and loading beam.4 5.3 Mounting of wall specimen.4 6 Test procedure4 6.1 Static (monotonic) test.4 6.2 Cyclic test schedule.6 7
30、 Test results .7 7.1 Hysteresis data.7 7.2 Envelope curves.7 7.3 Properties of wall specimen7 8 Test report.7 Annex A8 A.1 Application of vertical loads8 A.2 Boundary conditions.8 A.3 Rationale behind the cyclic test schedule.9 A.4 Modification of ISO displacement schedule9 A.5 Comparison of test re
31、sults with different test procedures9 A.6 Properties of wall specimen10 A.7 Example of load-displacement curve and tabular form .11 Bibliography.12 DRAFT 2009 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:46, Uncontrolled Copy, (c) BSI ISO/DIS 21581 ISO 2008 All r
32、ights reserved iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a sub
33、ject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (I
34、EC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Intern
35、ational Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights
36、. International Standard DIS 21581 was prepared by Technical Committee ISO/TC 165, Timber Structures, Working group WG7, Joints Made with Mechanical Fasteners. It specifies test methods for static and cyclic lateral loading as a basis for determining the characteristics of shear walls for use in win
37、d and seismic design. This is the first edition of ISO/DIS 21581. DRAFT 2009 Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:46, Uncontrolled Copy, (c) BSI ISO/DIS 21581 ISO 2008 All rights reserved v Introduction Evaluation of the structural performance of shear wa
38、lls intended to resist forces generated during wind and seismic actions is based on static and/or reversed cyclic load testing in some regulatory jurisdictions. The objective of this Standard is to provide test method appropriate for static and cyclic lateral loading as a basis for determining the c
39、haracteristics of shear walls for use in wind and seismic design. The cyclic displacement schedule in ISO Standard 16670 which was developed in consultation with a group of international experts, was also used in this standard. Supplementary information is given in Annex A to provide the rationale b
40、ehind the cyclic displacement schedule, recommendations for cases for which a modified schedule would be more appropriate, and typical test results obtained on a shear wall specimen by following this standard. DRAFT 2009 Licensed Copy: London South Bank University, South Bank University, 02/02/2009
41、03:46, Uncontrolled Copy, (c) BSI Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:46, Uncontrolled Copy, (c) BSI DRAFT INTERNATIONAL STANDARD ISO/DIS 21581 ISO 2008 All rights reserved 1 1 1 Scope This standard is intended to provide static and cyclic test methods a
42、s a basis for the derivation of lateral load resisting parameters which are required in the wind and seismic design of shear walls in timber buildings. The standard does not include criteria for parameters which are, at times, stipulated in national standards or building codes. This standard can be
43、used to determine those parameters under the following conditions: Method I: the boundary conditions are designed to produce mainly the shear response of the wall and ensure that the full shear capacity of the wall is achieved. Method II: the boundary conditions are designed to produce mainly the ro
44、cking (rigid body rotation of the wall) or combined shear-rocking response of the wall reflecting the intended actual construction details of joints connecting the wall to bottom and top boundaries. The standard includes procedures to ascertain the envelope curves (backbone or skeleton curves) for s
45、hear walls subjected to a static or a cyclic displacement schedule. 2 Normative references ISO 554, Standard atmospheres for conditioning and/or testing Specifications. ISO 3131, Wood Determination of density for physical and mechanical tests. ISO 16670, Timber structures Joints made with mechanical
46、 fasteners Quasi-static reversed-cyclic test method. ISO/FDIS 3010, Basis for design of structures Seismic actions on structures. ISO 4354, Wind actions on structures. EN 594 (1996) Timber structures Test methods Racking strength and stiffness of timber frame wall panels ASTM E 2126-07a, Standard te
47、st methods for cyclic (reversed) load test for shear resistance of walls for buildings 3 Symbols and definitions F : Applied lateral load, in newtons Fmax : Maximum lateral load, in newtons (as defined in Figure 3) Fv : Applied vertical load, in newtons H : Height of wall specimen in millimeters K :
48、 Displacement modulus, in newtons per millimeter : Horizontal displacement of wall, in millimeters DRAFT 2009 Timber structures Static and cyclic lateral load test method for shear walls Licensed Copy: London South Bank University, South Bank University, 02/02/2009 03:46, Uncontrolled Copy, (c) BSI ISO/D