ISO/FDIS 22762-3
(Main)Elastomeric seismic-protection isolators — Part 3: Applications for buildings — Specifications
Elastomeric seismic-protection isolators — Part 3: Applications for buildings — Specifications
This document specifies minimum requirements and test methods for elastomeric seismic isolators used for buildings and the rubber material used in the manufacture of such isolators. It is applicable to elastomeric seismic isolators used to provide buildings with protection from earthquake damage. The isolators covered consist of alternate elastomeric layers and reinforcing steel plates. They are placed between a superstructure and its substructure to 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.
Appareils d'appuis structuraux en élastomère pour protection sismique — Partie 3: Applications pour bâtiments — Spécifications
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FINAL DRAFT
International
Standard
ISO/TC 45/SC 4
Elastomeric seismic-protection
Secretariat: DSM
isolators —
Voting begins on:
2024-06-27
Part 3:
Applications for buildings —
Voting terminates on:
2024-08-22
Specifications
Appareils d'appuis structuraux en élastomère pour protection
sismique —
Partie 3: Applications pour bâtiments — Spécifications
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
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TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
FINAL DRAFT
International
Standard
ISO/TC 45/SC 4
Elastomeric seismic-protection
Secretariat: DSM
isolators —
Voting begins on:
Part 3:
Applications for buildings —
Voting terminates on:
Specifications
Appareils d'appuis structuraux en élastomère pour protection
sismique —
Partie 3: Applications pour bâtiments — Spécifications
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
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Published in Switzerland Reference number
ii
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 3
5 Classification . 6
5.1 General .6
5.2 Classification by construction .7
5.3 Classification by tolerance on shear properties .8
6 Requirement . 8
6.1 General .8
6.2 Type tests and routine tests .9
6.3 Functional requirements . .10
6.4 Design compressive force and design shear displacement .10
6.5 Performance requirements .10
6.5.1 General .10
6.5.2 Compressive properties .11
6.5.3 Shear properties . 12
6.5.4 Tensile properties . . 12
6.5.5 Dependences of shear properties . 13
6.5.6 Dependences of compressive properties .14
6.5.7 Shear displacement capacity . 15
6.5.8 Durability . 15
6.6 Rubber material requirements .16
6.6.1 General .16
6.6.2 Tensile properties . .16
6.6.3 Properties after ageing in air .16
6.6.4 Hardness .17
6.6.5 Ozone resistance .17
6.6.6 Other properties .17
6.7 Dimensional requirements .18
6.8 Requirements on steel used for flanges and reinforcing plates .18
6.9 Requirement on lead material for LRB .19
7 Design rules. 19
7.1 General .19
7.2 Shape factor . .19
7.2.1 First shape factor .19
7.2.2 Second shape factor . 20
7.3 Compression and shear properties . 20
7.3.1 Compressive stiffness . 20
7.3.2 Shear stiffness and equivalent damping ratio . 20
7.4 Ultimate properties .21
7.4.1 Stability at zero displacement .21
7.4.2 Stability and failure under large shear displacements . 22
7.4.3 Roll-out properties of elastomeric isolators with recessed or dowelled
connections (Type III) . 22
7.4.4 Tensile properties . . 23
7.5 Reinforcing steel plates .24
7.6 Connections .24
8 Manufacturing tolerances . .24
8.1 General .24
iii
8.2 Measuring instruments . 25
8.3 Plan dimensions . 25
8.3.1 Measurement method . 25
8.3.2 Tolerances . 25
8.4 Product height . 26
8.4.1 Measurement method . 26
8.4.2 Tolerances .27
8.5 Flatness .27
8.5.1 Measurement method .27
8.5.2 Tolerances .
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ISO 22762-3:2024(E)
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INTERNATIONAL STANDARD
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ISO
(Switzerland)
/FDIS 22762-3
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Fourth edition
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ISO/TC 45/SC 4
Secretariat: DSM
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Elastomeric seismic-protection isolators —
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Part 3:
Applications for buildings — Specifications
Appareils d'appuis structuraux en élastomère pour protection sismique — Formatted: Font color: Auto, French (France)
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Partie 3: Applications pour bâtiments — Spécifications
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ISO 22762-3:2024(E)
FDIS stage
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ISO copyright office
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Published in Switzerland.
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ii © ISO 2022 – All rights reserved
ISO 22762-3:2024(E)
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Contents
Adjust space between Asian text and numbers, Tab stops: Not
at 0.71 cm
Foreword . 8
Introduction. 10
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 1
4 Symbols . 4
5 Classification . 8
5.1 General . 8
5.2 Classification by construction . 8
5.3 Classification by tolerance on shear properties . 9
6 Requirement . 10
6.1 General . 10
6.2 Type tests and routine tests. 11
6.3 Functional requirements . 12
6.4 Design compressive force and design shear displacement . 13
6.5 Performance requirements . 13
6.5.1 General . 13
6.5.2 Compressive properties . 14
6.5.3 Shear properties . 15
6.5.4 Tensile properties . 15
6.5.5 Dependences of shear properties . 16
6.5.6 Dependences of compressive properties . 17
6.5.7 Shear displacement capacity . 18
6.5.8 Durability . 19
6.6 Rubber material requirements . 19
6.6.1 General . 19
6.6.2 Tensile properties . 19
6.6.3 Properties after ageing in air . 19
6.6.4 Hardness . 21
6.6.5 Ozone resistance . 21
6.6.6 Other properties . 21
6.7 Dimensional requirements . 21
6.8 Requirements on steel used for flanges and reinforcing plates . 23
6.9 Requirement on lead material for LRB . 23
7 Design rules . 23
7.1 General . 23
7.2 Shape factor . 23
7.2.1 First shape factor . 23
7.2.2 Second shape factor . 24
7.3 Compression and shear properties . 24
7.3.1 Compressive stiffness . 24
7.3.2 Shear stiffness and equivalent damping ratio . 25
7.4 Ultimate properties . 26
7.4.1 Stability at zero displacement . 26
7.4.2 Stability and failure under large shear displacements . 26
7.4.3 Roll-out properties of elastomeric isolators with recessed or dowelled
connections (Type III) . 27
7.4.4 Tensile properties . 28
ISO 22762-3:2024(E)
7.5 Reinforcing steel plates . 29
7.6 Connections . 30
8 Manufacturing tolerances . 30
8.1 General . 30
8.2 Measuring instruments . 30
8.3 Plan dimensions . 30
8.3.1 Measurement method . 30
8.3.2 Tolerances . 31
8.4 Product height . 32
8.4.1 Measurement method . 32
8.4.2 Tolerances . 33
8.5 Flatness . 34
8.5.1 Measurement method . 34
8.5.2 Tolerances . 34
8.6 Horizontal offset . 34
8.7 Plan dimensions of flanges . 35
8.8 Flange thickness . 36
8.9 Tolerances on positions of flange bolt holes . 37
9 Marking and labelling . 37
9.1 General . 37
9.2 Information to be provided . 37
9.3 Additional requirements . 37
9.4 Marking and labelling examples . 39
10 Test methods . 39
11 Quality assurance . 39
Annex A (normative) Tensile stress in reinforcing steel plate . 40
Annex B (normative) Determination of ultimate property diagram based on experimental
results . 43
Annex C (informative) Minimum recommended physical properties of rubber material . 47
Annex D (informative) Effect of inner-hole diameter and second shape factor on shear
properties. 48
Annex E (informative) Determination of compressive properties of elastomeric isolators . 52
Annex F (informative) Determination of shear properties of elastomeric isolators . 55
Annex G (informative) Method of predicting buckling limit at large deformations . 62
Annex H (informative) Design of fixing bolts and flanges . 74
Bibliography . 79
Foreword .
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