结构设计作用 第5部分：地震作用——新西兰

SECTION 8 REQUIREMENTS FOR PARTS AND COMPONENTS

8.1 GENERAL................................................................................................................45

8.2 DESIGN RESPONSE COEFFICIENT FOR PARTS....................................................46

8.3 FLOOR HEIGHT COEFFICIENT, C_FH........................................................................46

8.4 PART SPECTRAL SHAPE COEFFICIENT.................................................................46

8.5 DESIGN ACTIONS ON PARTS...................................................................................47

8.6 PART RESPONSE FACTOR C_ph................................................................................47

8.7 CONNECTIONS..........................................................................................................48

APPENDICES

A DEFINITIONS................................................................................................................49

B NOTATION....................................................................................................................54

C DESIGNING FOR ULTIMATE LIMIT STATE..............................................................58

D REQUIREMENTS FOR MATERIAL DESIGN STANDARDS.......................................73

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NZS 1170.5:2004

This New Zealand Standard was prepared by Technical Committee BD-006-04-11, Earthquake Loadings in New Zealand under Joint Committee BD-006, General Design Requirements and Loading on Structures. It was approved by the Council of Standards New Zealand on 21 December 2004. It was published on 22 December 2004.

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The following are the members of Technical Committee BD-006-04:

Mr Andrew King (Chair)

Prof Des Bull

Mr Charles Clifton

Dr David Dowrick

Mr Rob Jury

Dr Graeme McVerry

Prof Peter Moss

Dr Arthur O'Leary

The following are represented on Committee BD-006:

Association of Consulting Engineers Australia

Australian Building Codes Board

Australian Institute of Steel Construction

Building Research Association of New Zealand

Cement and Concrete Association of Australia

CSIRO, Building, Construction and Engineering

Cyclone Testing Station – James Cook University

Electricity Supply Association of Australia

Housing Industry Association

Institution of Engineers Australia

Institution of Professional Engineers New Zealand

Master Builders Australia

New Zealand Heavy Engineering Research Association

Steel Reinforcement Institute of Australia

University of Canterbury New Zealand

University of Melbourne

University of Newcastle

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Keeping Standards up-to-date

Standards are living documents that reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are published. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments that may have been published since the Standard was purchased.

Detailed information about New Zealand Standards can be found by visiting the Standards New Zealand web site at www.standards.co.nz and looking up the relevant Standard in the on-line catalogue.

Alternatively, Standards New Zealand publishes an annual printed Catalogue with full details of all current Standards. For more frequent listings or notification of revisions, amendments and withdrawals, Standards New Zealand offer a number of update options. For information about these services, please contact Standards New Zealand.

We also welcome suggestions for improvement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Please address your comments to the Chief Executive of Standards New Zealand at the address shown on the back cover.

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This Standard was issued in draft form for comment as DR 00902.

2

NZS 1170.5:2004

New Zealand Standard™

Structural design actions

Part 5: Earthquake actions – New Zealand

Previous edition NZS 4203:1992 (Part)

COPYRIGHT

©Standards New Zealand

All rights are reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher.

Published by Standards New Zealand, Private Bag 2439, Wellington 6020.

ISBN 1-86975-018-7

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PREFACE

This Standard was prepared by the Standards New Zealand Technical Committee BD/6/4/11. This was initially a Joint Standards Australia/Standards New Zealand Technical Subcommittee of Committee BD-006, General Design Requirements and Loading on Structures which was to develop a Joint Australia/New Zealand Earthquake Actions Standard. The development of a Joint Earthquake Standard proved to be impractical and hence separate country specific Standards were proceeded with as part of the 1170 suite of Standards. It follows the philosophy and principles that are set out in the Preface to Part 0.

This Standard, taken together with the other joint Parts of the 1170 suite is to supersede NZS 4203:1992, General structural design and design loadings for buildings. However, NZS 4203 will remain current in New Zealand for a transition period after publication to allow projects currently under way to be completed and for the Department of Building and Housing to follow its processes for the citation of the 1170 series of Standards as verification methods for the New Zealand Building Code.

The 1170 series, Structural design actions, comprises the following parts, each of which has an accompanying Commentary that is published as a Supplement:

AS/NZS 1170 Structural design actions

AS/NZS 1170.0:2002 Part 0: General principles

AS/NZS 1170.1:2002 Part 1: Permanent, imposed and other actions

AS/NZS 1170.2:2002 Part 2: Wind actions

AS/NZS 1170.3:2003: Part 3: Snow and ice actions

NZS 1170 Structural design actions

NZS 1170.5:2004 Part 5: Earthquake actions – New Zealand

(Also to be published is AS 1170.4, Earthquake actions – Australia which will have application only in Australia.)

The Commentary to this Standard is NZS 1170.5 Supplement 1, Structural design actions—Earthquake actions – New Zealand – Commentary (Supplement to NZS 1170.5:2004). The Commentary is intended to provide background to the various provisions in the Standard, to suggest approaches that may satisfy the intent of the Standard, and if appropriate, describe differences between this and previous editions of the Standard. References are provided for further reading and these are given at the end of each section of the Commentary.

The terms ‘normative’ and ‘informative’ have been used in this Standard to define the application of the Appendix to which they apply. A ‘normative’ Appendix is an integral part of a Standard, whereas an ‘informative’ Appendix is only for information and guidance. The Standard includes Appendix D ‘Requirements for material design Standards’ as an informative Appendix that is included to guide developers of material specific structural design Standards that are intended to be used in conjunction with NZS 1170.5. Appendix D does not have application to the design of a specific structure where a conforming material specific structural design Standard is being used.

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CONTENTS

	Page
SECTION 1 SCOPE AND GENERAL	5
1.1 SCOPE	5
1.2 DETERMINATION OF EARTHQUAKE ACTIONS	5
1.3 LIMIT STATES	5
1.4 SPECIAL STUDIES	5
1.5 REFERENCED DOCUMENTS	6
1.6 UNITS	6
1.7 DEFINITIONS	6
1.8 NOTATION	6
SECTION 2 VERIFICATION	7
2.1 GENERAL REQUIREMENTS	7
2.2 STRUCTURAL TYPES	7
2.3 ULTIMATE LIMIT STATE VERIFICATION	8
2.4 SERVICEABILITY LIMIT STATE VERIFICATION	9
2.5 DEFORMATION CONTROL	9
2.6 STRUCTURE PARTS	9
SECTION 3 SITE HAZARD SPECTRA	10
3.1 ELASTIC SITE SPECTRA FOR HORIZONTAL LOADING	10
3.2 SITE HAZARD SPECTRA FOR VERTICAL LOADING	21
SECTION 4 STRUCTURAL CHARACTERISTICS	23
4.1 PERIOD OF VIBRATION	23
4.2 SEISMIC WEIGHT AND SEISMIC MASS	23
4.3 STRUCTURAL DUCTILITY FACTOR	24
4.4 STRUCTURAL PERFORMANCE FACTOR, Sp	24
4.5 STRUCTURAL IRREGULARITY	24
SECTION 5 DESIGN EARTHQUAKE ACTIONS	27
5.1 GENERAL	27
5.2 HORIZONTAL DESIGN ACTION COEFFICIENTS AND DESIGN SPECTRA	27
5.3 APPLICATION OF DESIGN ACTIONS	29
5.4 VERTICAL DESIGN ACTIONS	30
5.5 GROUND MOTION RECORDS FOR TIME HISTORY ANALYSES	30
5.6 CAPACITY DESIGN	32
SECTION 6 STRUCTURAL ANALYSIS	34
6.1 GENERAL	34
6.2 EQUIVALENT STATIC METHOD	35
6.3 MODAL RESPONSE SPECTRUM METHOD	36
6.4 NUMERICAL INTEGRATION TIME HISTORY METHOD	37
6.5 P-DELTA EFFECTS	39
6.6 ROCKING STRUCTURES AND STRUCTURAL ELEMENTS	41
SECTION 7 EARTHQUAKE INDUCED DEFLECTIONS	42
7.1 GENERAL	42
7.2 DETERMINATION OF DESIGN HORIZONTAL DEFLECTIONS	42
7.3 DETERMINATION OF DESIGN INTER-STOREY DEFLECTION	43
7.4 HORIZONTAL DEFLECTION LIMITS	43
7.5 INTER-STOREY DEFLECTION LIMITS	44

5

SECTION 8 REQUIREMENTS FOR PARTS AND COMPONENTS

8.1 GENERAL................................................................................................................45

8.2 DESIGN RESPONSE COEFFICIENT FOR PARTS....................................................46

8.3 FLOOR HEIGHT COEFFICIENT, C_FH........................................................................46

8.4 PART SPECTRAL SHAPE COEFFICIENT.................................................................46

8.5 DESIGN ACTIONS ON PARTS...................................................................................47

8.6 PART RESPONSE FACTOR C_ph................................................................................47

8.7 CONNECTIONS..........................................................................................................48

APPENDICES

A DEFINITIONS................................................................................................................49

B NOTATION....................................................................................................................54

C DESIGNING FOR ULTIMATE LIMIT STATE..............................................................58

D REQUIREMENTS FOR MATERIAL DESIGN STANDARDS.......................................73

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