1、BSI Standards Publication Elastomeric seismic-protection isolators Part 4: Guidance on the application of ISO 22762-3 PD ISO/TS 22762-4:2014National foreword This Published Document is the UK implementation of ISO/TS 22762-4:2014. The UK participation in its preparation was entrusted to Technical Co
2、mmittee PRI/73, Industrial rubber products. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Stand
3、ards Institution 2014. Published by BSI Standards Limited 2014 ISBN 978 0 580 80828 9 ICS 83.140.99; 91.120.25 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Document was published under the authority of the Standards Policy and Strategy Committee on
4、 31 July 2014. Amendments/corrigenda issued since publication Date Text affected PUBLISHED DOCUMENT PD ISO/TS 22762-4:2014 ISO 2014 Elastomeric seismic-protection isolators Part 4: Guidance on the application of ISO 22762-3 Appareils dappuis structuraux en lastomre pour protection sismique Partie 4:
5、 Lignes directrices pour lapplication de lISO 22762-3 TECHNICAL SPECIFICATION ISO/TS 22762-4 First edition 2014-07-15 Reference number ISO/TS 22762-4:2014(E) PD ISO/TS 22762-4:2014 ISO/TS 22762-4:2014(E)ii ISO 2014 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2014 All rights reserved. Unless
6、 otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the add
7、ress below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland PD ISO/TS 22762-4:2014 ISO/TS 22762-4:2014(E) ISO 2014 All rights reser
8、ved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references 1 3 T erms and definitions . 1 4 Guidance on the use of Clause 4 of ISO 22762-3 1 5 Guidance on the use of Clause 5 of ISO 22762-3 1 6 Guidance on the use of Clause 6 of ISO 22762-3 1 6.1 General . 1 6.2 Type tests and routine test
9、s. 1 6.3 Functional requirements 3 6.4 Design compressive force and design shear displacement 3 6.5 Performance requirements 4 7 Guidance on the use of Clause 7 of ISO 22762-3 .24 7.1 General 24 7.2 Compressive stiffness .24 8 Guidance on the use of Clause 8 of ISO 22762-3 .31 9 Guidance on the use
10、of Clause 9 of ISO 22762-3 .31 10 Guidance on the use of Clause 10 of ISO 22762-3 .31 11 Guidance on the use of Clause 11 of ISO 22762-3 .31 PD ISO/TS 22762-4:2014 ISO/TS 22762-4:2014(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards
11、 bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organiza
12、tions, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its fur
13、ther maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directi
14、ves). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the I
15、ntroduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related
16、 to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, P
17、roducts (other than hoses). ISO 22762 consists of the following parts, under the general title Elastomeric seismic-protection isolators: Part 1: Test methods Part 2: Applications for bridges Specifications Part 3: Applications for buildings Specifications Part 4: Guidance on the application of ISO 2
18、2762-3 Technical Specificationiv ISO 2014 All rights reserved PD ISO/TS 22762-4:2014 TECHNICAL SPECIFICATION ISO/TS 22762-4:2014(E) Elastomeric seismic-protection isolators Part 4: Guidance on the application of ISO 22762-3 1 Scope This Technical Specification provides guidance on the use of ISO 227
19、62-3:2010. It includes example design calculations and provides data on the characteristics obtained from all types of elastomeric isolators. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. Fo
20、r dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 22762-1:2010, Elastomeric seismic-protection isolators Part 1: Test methods ISO 22762-3:2010, Elastomeric seismic-protection isolators Par
21、t 3: Applications for buildings Specifications 3 T erms a nd definiti ons For the purposes of this document, the terms and definitions given in ISO 22762-3:2010 apply. 4 Guidance on the use of Clause 4 of ISO 22762-3 No guidance is given. 5 Guidance on the use of Clause 5 of ISO 22762-3 No guidance
22、is given. 6 Guidance on the use of Clause 6 of ISO 22762-3 6.1 General Guidance is given for 6.2, 6.4, and 6.5. 6.2 Type tests and routine tests An example of the scaled test pieces (scales A and B) for the type testing of the specific isolator size is given as follows. Dimensions and properties of
23、target isolator (isolator-X) are shown in Table 1. ISO 2014 All rights reserved 1 PD ISO/TS 22762-4:2014 ISO/TS 22762-4:2014(E) Table 1 Dimensions and properties of isolator-X Outer diameter, d o(mm) 1 000 Inner diameter, d i (mm) 25 Thickness of one rubber layer, t r (mm) 6,7 Thickness of reinforci
24、ng steel plate, t s(mm) 4,4 Number of rubber layer, n 30 First shape factor, S 1 36,4 Second shape factor, S 2 5,0 Shear stiffness, K h(N/mm 10 3 ) 2,44 Equivalent damping ratio, h eq 0,225 Compressive stiffness, K v(N/mm 10 3 ) 5 450 In this case, requirement for scales A and B test piece are shown
25、 in Table 4 of ISO 22762-3:2010. An example of dimensions and properties of scales A and B is shown in Table 2. Table 2 Examples of Scales A and B for Isolator-X Characteristics Scale A Scale B Scale 0,25 0,6 Outer diameter, d o(mm) 250 600 Inner diameter, d i (mm) 0 (6,3) 15 Thickness of one rubber
26、 layer, t r ( mm) 1,7 4,0 Thickness of reinforcing steel plate, t s(mm) 1,2 2,2 Number of rubber layer, n 30 30 First shape factor, S 1 36,4 36,4 Second shape factor, S 2 5,0 5,0 Shear stiffness, K h(N/mm 10 3 ) 0,61 1,46 Equivalent damping ratio, h eq 0,225 0,225 Compressive stiffness, K v(N/mm 10
27、3 ) 1 360 3 270 For any dimension, variation of 5 % from exact scale-downed dimensions can be allowed. The scaling of reinforcing plate for scale A can be adjusted if the effect on characteristics of isolator is not significant. In the case of scale A in Table 2, the thickness of the plate is comput
28、ed as 1,1 mm and 1,2 mm is adopted for the test piece. Number of the test pieces required is not specified in the text. The recommended number of the test pieces is shown in Table 3 when each test piece is tested individually. In the case that double-shear testing arrangement is used for determining
29、 the shear properties, it is recommended that two tests are performed and the number of test pieces doubled.2 ISO 2014 All rights reserved PD ISO/TS 22762-4:2014 ISO/TS 22762-4:2014(E) Table 3 Recommended number of test pieces for each test item Properties Number of test pieces Compressive propertie
30、s 2 Shear properties 2 Dependency of shear properties Shear strain dep. 2 Compressive stress dep. 2 Others 1 Dependency of compressive properties 1 Ultimate properties 1 Durability 1 In the case shown in Table 4, the available previous test results can be used for substitution of the test required f
31、or the newly designed isolator. Table 4 An example of available previous type test results: Comparison of characteristics between newly designed and previously tested isolator Characteristics Previously tested isolator Newly designed isolator (-) Newly designed isolator (+) Remarks Outer diameter, d
32、 o(mm) 1 100 1 000 1 200 within 10 % Inner diameter, d i (mm) 25 25 27 within 10 % Thickness of one rubber layer, t r( mm) 7,0 6,7 7, 5 within 10 % Thickness of reinforcing plate, t s(mm) 4,4 4,4 4,8 within 10 % Number of rubber layer, n 30 30 30 same First shape factor, S 1 38,4 36,4 42,0 within 10
33、 % Second shape factor, S 2 5,2 5,0 5,3 within 10 % Maximum comp. stress for test, max(MPa) 30 25 30 Previous test more severe condition Minimum comp. stress for test, min(MPa) -0,5 5,0 0,5 Previous test more severe condition Maximum shear strain for test, max 3,5 3,0 3,2 Previous test more severe c
34、ondition 6.3 Functional requirements No guidance is given. 6.4 Design compressive force and design shear displacement Design compressive force refers to the force under non-seismic conditions. Any specification or guidance is not given regarding nominal stress, nom . Recommended process to specify n
35、omis given as follows: a) nomis determined in the range less than 30 % of critical stress, cr . Maximum nomis less than or equal to 15 MPa. b) Adequacy of nomis verified so that compressive stress dependency (change of shear property under 0,5 nomand 2,0 nom ) is acceptable. Maximum nomis less than
36、or equal to 15 MPa. ISO 2014 All rights reserved 3 PD ISO/TS 22762-4:2014 ISO/TS 22762-4:2014(E) 6.5 Performance requirements Examples of tests for each requirement are introduced. 6.5.1 General No guidance is given. 6.5.2 Compressive properties Example for 6.5.2 of ISO 22762-3 on compressive proper
37、ties is given. 6.5.2.1 In case of HDR a) Test piece and test conditions Test piece is shown in Table 5. Table 5 Test isolators (scaled isolator) Type Outer diameter (mm) Inner diameter (mm) First shape factor Second shape factor Compressive stress (N/mm 2 ) Number of test isolator HDR 700 15 36,4 5,
38、0 12,0 1 Test conditions are given below: compressive stress amplitude: 12 MPa 30 %; number of cycles: 3 cycles; compressive stiffness, K v , is computed from 3rd cycle. b) Test result The result for one type of HDR is plotted in Figure 1 and Table 6. Figure 1 Compressive property test of HDR4 ISO 2
39、014 All rights reserved PD ISO/TS 22762-4:2014 ISO/TS 22762-4:2014(E) Table 6 Test results Characteristics Test result Compressive stiffness, K v 4 592,0 kN/mm 6.5.3 Shear properties Example for 6.2.2 of ISO 22762-3 on shear properties is given. 6.5.3.1 In case of HDR a) Test piece and test conditio
40、ns Test piece is shown in Table 7. Table 7 Test isolators (scaled isolator) Type Outer diameter (mm) Inner diameter (mm) First shape factor Second shape factor Compressive stress (N/mm 2 ) Number of test isolator HDR 700 15 36,4 5,0 12,0 1 Test conditions are given below: compressive stress: 12 MPa;
41、 shear strain amplitude: 100 % (141 mm); number of cycles: 3 cycles; shear stiffness, K h , and damping ratio, h eq , are computed from 3rd cycle. b) Test results The result for one type of HDR is shown in Figure 2 and Table 8. Figure 2 Shear property test of HDR ISO 2014 All rights reserved 5 PD IS
42、O/TS 22762-4:2014 ISO/TS 22762-4:2014(E) Table 8 Test piece Characteristics Test result Shear stiffness, K h 4 592,0 kN/mm Equivalent damping ration, h eq 0,21 6.5.4 Tensile properties Example for 6.5.4 of ISO 22762-3 on shear properties is given. 6.5.4.1 In case of LNR a) Test piece and test condit
43、ions Test pieces are shown in Table 9. Table 9 Test piece Type Outer diameter (mm) S 1 S 2 LNR 500 32,0 5,1 800 31,7 5,1 b) Test results Test results are shown in Figures 3 a) and b) and Table 10. a) relationship of tensile stress and tensile strain of LNR under shear-strain offset of 100% b) measur
44、ement of tensile yield stress Figure 3 Tensile performance at = 100 % Table 10 Test results Outer diameter (mm) Tensile yield stress under shear strain of 100% (MPa) 500 1,25 800 1,19 6.5.4.2 In case of HDR a) Test piece and test conditions6 ISO 2014 All rights reserved PD ISO/TS 22762-4:2014 ISO/TS
45、 22762-4:2014(E) Test pieces are shown in Table 11. Table 11 Test piece Type Outer diameter (mm) S 1 S 2 HDR 800 36,1 4,0 600 36,6 3,0 b) Test results Test results are shown in Figures 4 a) and b) and Table 12. a) relationship of tensile stress and tensile strain of HDR under shear-strain offset of
46、100% b) measurement of tensile yield stress Figure 4 Tensile performance at = 100 % Table 12 Test results Outer diameter (mm) Tensile yield stress under shear strain of 100% (MPa) 800 1,2 600 1,4 6.5.5 Dependencies of shear properties 6.5.5.1 Shear strain dependency Example for 6.5.5.1 of ISO 22762-
47、3 on shear strain dependency is given. 6.5.5.1.1 In case of HDR a) Test piece and test conditions 1) Scaled model Test pieces of scaled model are shown in Table 13. ISO 2014 All rights reserved 7 PD ISO/TS 22762-4:2014 ISO/TS 22762-4:2014(E) Table 13 Test isolators (scaled model) Type Outer dia. (mm
48、) First shape factor Second shape factor Compressive stress (N/mm 2 ) Number of isolators tested HDR 225 35,2 3,3 9,3 1 225 35,2 5,0 15,0 2 225 35,2 8,3 15,0 1 Test conditions are given below: test vibration frequency: 0,33 Hz, sinusoidal wave; shear strain amplitude: = 10 %, 20 %, 50 %, 100 %, 150
49、%, 200 %, and 270 %; loading cycles: 3 cycles, respectively; reference cycle: 3rd cycle; test results were corrected to the corresponding value of the property at 20 C by the specified method in ISO 22762-3, 6.5.3.3.3. 2) Full scale isolators Test pieces of full scale isolators are shown in Table 14. Table 14 Test isolators (full scale) Type Outer dia. (mm) First shape factor Second shape factor Com
