1、 Reference number ISO 22762-1:2010(E) ISO 2010INTERNATIONAL STANDARD ISO 22762-1 Second edition 2010-11-01 Elastomeric seismic-protection isolators Part 1: Test methods Appareils dappuis structuraux en lastomre pour protection sismique Partie 1: Mthodes dessai ISO 22762-1:2010(E) PDF disclaimer This
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5、ENT ISO 2010 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body
6、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 ii ISO 2010 All rights reservedISO 22762-1:2010(E) ISO 2010 All rights reserved iiiContents Page Forew
7、ord iv Introduction.v 1 Scope1 2 Normative references1 3 Terms and definitions .2 4 Symbols and cross-section of isolator .4 5 Rubber material tests9 6 Isolator tests 14 Annex A (normative) Determination of accelerated ageing conditions equivalent to expected life at standard laboratory temperature
8、(23 C or 27 C) .55 Annex B (normative) Inertia force correction 58 Annex C (normative) Friction force correction60 Annex D (normative) Determination of coefficient linear thermal expansion 63 Annex E (informative) Alternative methods of determining shear properties65 Annex F (informative) Creep test
9、.67 Annex G (informative) Determination of reaction force due to low-rate deformation .69 Annex H (informative) Durability investigation of elastomeric isolators used for 10 years in a bridge71 Annex I (informative) Durability investigation of elastomeric isolators used for seven years in a building
10、.73 Bibliography77 ISO 22762-1:2010(E) iv ISO 2010 All rights reservedForeword 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 techni
11、cal 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 organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely w
12、ith the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft Int
13、ernational Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International 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 document m
14、ay be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 22762-1 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, Products (other than hoses). This second edition cancels and replaces the fir
15、st edition (ISO 22762-1:2005), which has been technically revised. It also incorporates the Technical Corrigendum ISO 22762-1:2005/Cor.1:2006. ISO 22762 consists of the following parts, under the general title Elastomeric seismic-protection isolators: Part 1: Test methods Part 2: Applications for br
16、idges Specifications Part 3: Applications for buildings Specifications ISO 22762-1:2010(E) ISO 2010 All rights reserved vIntroduction ISO 22762 (all parts) consists of two parts related to specifications for isolators, i.e. ISO 22762-2 for bridges and ISO 22762-3 for buildings. This is because the i
17、solator requirements for bridges and for buildings are quite different, although the basic concept of the two products is similar. Therefore, ISO 22762-2 and the relevant clauses in this part of ISO 22762 are used when ISO 22762 (all parts) is applied to the design of bridge isolators, whereas ISO 2
18、2762-3 and the relevant clauses of this part of ISO 22762 are used when it is applied to building isolators. The main differences to be noted between isolators for bridges and isolators for buildings are the following. a) Isolators for bridges are mainly rectangular in shape and those for buildings
19、are circular in shape. b) Isolators for bridges are designed to be used for both rotation and horizontal displacement, while isolators for buildings are designed for horizontal displacement only. c) Isolators for bridges are designed to perform on a daily basis to accommodate length changes of bridg
20、es caused by temperature changes as well as during earthquakes, while isolators for buildings are designed to perform only during earthquakes. d) Isolators for bridges are designed to withstand dynamic loads caused by vehicles on a daily basis as well as earthquakes, while isolators for buildings ar
21、e mainly designed to withstand dynamic loads caused by earthquakes only. For structures other than buildings and bridges (e.g. tanks), the structural engineer uses either ISO 22762-2 or ISO 22762-3, depending on the requirements of the structure. INTERNATIONAL STANDARD ISO 22762-1:2010(E) ISO 2010 A
22、ll rights reserved 1Elastomeric seismic-protection isolators Part 1: Test methods 1 Scope This part of ISO 22762 specifies the test methods for determination of a) the properties of the rubber material used to manufacture the elastomeric seismic isolators, and b) the characteristics of elastomeric s
23、eismic isolators. It is applicable to elastomeric seismic isolators used to provide buildings or bridges with protection from earthquake damage. The isolators covered consist of alternate elastomeric layers and reinforcing steel plates which are placed between a superstructure and its substructure t
24、o provide both flexibility for decoupling structural systems from ground motion, and damping capability to reduce displacement at the isolation interface and the transmission of energy from the ground into the structure at the isolation frequency. 2 Normative references The following referenced docu
25、ments are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 37, Rubber, vulcanized or thermoplastic Determination of tensile stress-st
26、rain properties ISO 48, Rubber, vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD) ISO 188, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance tests ISO 812, Rubber, vulcanized or thermoplastic Determination of low-temperature brittl
27、eness ISO 813, Rubber, vulcanized or thermoplastic Determination of adhesion to a rigid substrate 90 degree peel method ISO 815-1, Rubber, vulcanized or thermoplastic Determination of compression set Part 1: At ambient or elevated temperatures ISO 815-2, Rubber, vulcanized or thermoplastic Determina
28、tion of compression set Part 2: At low temperatures ISO 1431-1, Rubber, vulcanized or thermoplastic Resistance to ozone cracking Part 1: Static and dynamic strain testing ISO 1827, Rubber, vulcanized or thermoplastic Determination of shear modulus and adhesion to rigid plates Quadruple-shear methods
29、 ISO 22762-1:2010(E) 2 ISO 2010 All rights reservedISO 3387, Rubber Determination of crystallization effects by hardness measurements ISO 4664-1, Rubber, vulcanized or thermoplastic Determination of dynamic properties Part 1: General guidance ISO 7500-1:2004, Metallic materials Verification of stati
30、c uniaxial testing machines Part 1: Tension/compression testing machines Verification and calibration of the force-measuring system ISO 7619-2, Rubber, vulcanized or thermoplastic Determination of indentation hardness Part 2: IRHD pocket meter method ISO 11346:2004, Rubber, vulcanized or thermoplast
31、ic Estimation of life-time and maximum temperature of use ISO 22762-2, Elastomeric seismic-protection isolators Part 2: Applications for bridges Specifications ISO 22762-3, Elastomeric seismic-protection isolators Part 3: Applications for buildings Specifications ISO 23529, Rubber General procedures
32、 for preparing and conditioning test pieces for physical test methods 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 breaking rupture of elastomeric isolator due to compression (or tension)-shear loading 3.2 buckling state when elastomeric i
33、solators lose their stability under compression-shear loading 3.3 compressive properties of elastomeric isolator K vcompressive stiffness for all types of rubber bearings 3.4 compression-shear testing machine machine used to test elastomeric isolators, which has the capability of shear loading under
34、 constant compressive load 3.5 cover rubber rubber wrapped around the outside of inner rubber and reinforcing steel plates before or after curing of elastomeric isolators for the purposes of protecting the inner rubber from deterioration due to oxygen, ozone and other natural elements and protecting
35、 the reinforcing plates from corrosion 3.6 design compressive stress long-term compressive force on the elastomeric isolator imposed by the structure 3.7 effective loaded area area sustaining vertical load in elastomeric isolators, which corresponds to the area of reinforcing steel plates ISO 22762-
36、1:2010(E) ISO 2010 All rights reserved 33.8 effective width rectangular elastomeric isolator the smaller of the two side lengths of inner rubber to which direction shear displacement is not restricted 3.9 elastomeric isolator rubber bearing, for seismic isolation of buildings, bridges and other stru
37、ctures, which consists of multi-layered vulcanized rubber sheets and reinforcing steel plates EXAMPLE High-damping rubber bearings, linear natural rubber bearings and lead rubber bearings. 3.10 first shape factor ratio of effectively loaded area to free deformation area of one inner rubber layer bet
38、ween steel plates 3.11 high-damping rubber bearing HDR elastomeric isolator with relatively high damping properties obtained by special compounding of the rubber and the use of additives 3.12 inner rubber rubber between multi-layered steel plates inside an elastomeric isolator 3.13 lead rubber beari
39、ng LRB elastomeric isolator whose inner rubber with a lead plug or lead plugs press fitted into a hole or holes of the isolator body to achieve damping properties 3.14 linear natural rubber bearing LNR elastomeric isolator with linear shear force-deflection characteristics and relatively low damping
40、 properties, fabricated using natural rubber NOTE Any bearing with relatively low damping can be treated as an LNR bearing for the purposes of isolator testing. 3.15 maximum compressive stress peak stress acting briefly on elastomeric isolators in compressive direction during an earthquake 3.16 nomi
41、nal compressive stress long-term stress acting on elastomeric isolators in compressive direction as recommended by the manufacturer for the isolator, including the safety margin 3.17 roll-out instability of an isolator with either dowelled or recessed connection under shear displacement 3.18 routine
42、 test test for quality control of the production isolators during and after manufacturing 3.19 second shape factor circular elastomeric isolator ratio of the diameter of the inner rubber to the total thickness of the inner rubber ISO 22762-1:2010(E) 4 ISO 2010 All rights reserved3.20 second shape fa
43、ctor rectangular or square elastomeric isolator ratio of the effective width of the inner rubber to the total thickness of the inner rubber 3.21 shear properties of elastomeric isolators comprehensive term that covers characteristics determined from isolator tests: shear stiffness, K h , for LNR; sh
44、ear stiffness, K h , and equivalent damping ratio, h eq , for HDR and LRB; post-yield stiffness, K d , and characteristic strength, Q d , for LRB 3.22 structural engineer engineer who is in charge of designing the structure for base-isolated bridges or buildings and is responsible for specifying the
45、 requirements for elastomeric isolators 3.23 type test test for verification either of material properties and isolator performances during development of the product or that project design parameters are achieved 3.24 ultimate property property at either buckling, breaking, or roll-out of an isolat
46、or under compression-shear loading 3.25 ultimate property diagram UPD diagram giving the interaction curve of compressive stress and buckling strain or breaking strain of an elastomeric isolator 4 Symbols and cross-section of isolator 4.1 Symbols For the purposes of this document, the symbols given
47、in Table 1 apply. Table 1 Symbols and descriptions Symbol Description A effective plan area; plan area of elastomeric isolator, excluding cover rubber portion A beffective area of bolt A eoverlap area between the top and bottom elastomer area of isolator A freeload-free area of isolator A loadloaded
48、 area of isolator A parea of the lead plug for a lead rubber bearing a side length of square elastomeric isolator, excluding cover rubber thickness, or length in longitudinal direction of rectangular isolator, excluding cover rubber thickness a elength of the shorter side of the rectangular isolator
49、, including cover rubber thickness ISO 22762-1:2010(E) ISO 2010 All rights reserved 5Table 1 (continued) Symbol Description a length in longitudinal direction of the rectangular isolator, including cover rubber thickness B effective width for bending of flange b length in transverse direction of the rectangular isolator, excluding cover rubber thickness b length in transverse direction of the rectangular isolator, including cover rubber thickness c dist
