结构设计荷载 第0部分：一般原则

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Australian/New Zealand Standard^TM

Structural design actions

Part 0: General principles

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AS/NZS 1170.0:2002

This Joint Australian/New Zealand Standard was prepared by Joint Technical Committee BD-006, General Design Requirements and Loading on Structures. It was approved on behalf of the Council of Standards Australia on 29 March 2002 and on behalf of the Council of Standards New Zealand on 28 March 2002. It was published on 4 June 2002.

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
• Concrete Masonry 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

Additional interests participating in the preparation of this Standard:

• Monash University
• Curtin University of Technology

Keeping Standards up-to-date

Standards are living documents which 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 Standards may also be withdrawn.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 which may have been published since the Standard was purchased.

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

Alternatively, both organizations publish an annual printed Catalogue with full details of all current Standards. For more frequent listings or notification of revisions, amendments and withdrawals, Standards Australia and Standards New Zealand offer a number of update options. For information about these services, users should contact their respective national Standards organization.

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 either Standards Australia International or Standards New Zealand at the address shown on the back cover.

This Standard was issued in draft form for comment as DR 00904.

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Australian/New Zealand Standard^TM

Structural design actions

Part 0: General principles

Originated in Australia as part of AS CA1—1933.

Originated in New Zealand as part of NZS 1900:1964.

Previous Australian editions AS 1170.1—1989 and AS 2867—1986.

Previous New Zealand edition NZS 4203:1992.

AS 1170.1—1989, AS 2867—1986, and NZS 4203:1992 jointly revised, amalgamated and redesignated in part as AS/NZS 1170.0:2002.

COPYRIGHT

© Standards Australia/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.

Jointly published by Standards Australia International Ltd, GPO Box 5420, Sydney, NSW 2001 and Standards New Zealand, Private Bag 2439, Wellington 6020

ISBN 0 7337 4469 9

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PREFACE

This Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee BD-006, General Design Requirements and Loading on Structures to supersede, in part, AS 1170.1—1989, Minimum design loads on structures, Part 1: Dead and live loads, and, in part, NZS 4203:1992, Code of practice for general structural design and design loadings for buildings, Volume 1: Code of practice and, in part, AS 2867—1986, Farm structures—General requirements for structural design.

This Standard is published as a joint Standard (as are also AS/NZS 1170.1 and AS/NZS 1170.2) and it is intended that it is suitable for use in New Zealand as well as Australia. However, NZS 4203, General structural design and design loadings for buildings remains current in New Zealand until the publication of all parts (including Part 4: Earthquake action) and for a transition period afterwards.

For Australia, this Standard will be referenced in the Building Code of Australia by way of BCA Amendment 11 to be published on 1 July 2002, thereby superseding in part the previous Edition, AS 1170.1—1989, which will be withdrawn 12 months from the date of publication of this edition. AS 1170.1—1989 may be used for structures not covered by the Building Code of Australia, until an Appendix is developed for inclusion in this Standard by amendment.

The objective of this Standard is to provide designers with general procedures and criteria for the structural design of structures. It outlines a design methodology that is applied in accordance with established engineering principles.

This Standard includes revised Clauses covering load combinations (referred to as combinations of actions) and general design and analysis clauses. It does not include values of actions (e.g. values of dead or live loads; referred to as permanent or imposed actions).

This Standard is Part 0 of the AS/NZS 1170 series, Structural design actions, which comprises the following parts, each of which will have an accompanying Commentary published as a Supplement:

Part 0: General principles

Part 1: Permanent, imposed and other actions

Part 2: Wind actions

Part 3: Snow and ice actions

Part 4: Earthquake actions

The Commentary to this Standard is AS/NZS 1170.0 Supp 1, Structural design actions—General principles—Commentary (Supplement to AS/NZS 1170.0:2002).

This Standard is based on the philosophy and principles set out in ISO 2394:1998, General principles on reliability for structures. ISO 2394 is written specifically as a guide for the preparation of national Standards covering the design of structures. It includes methods for establishing and calibrating reliability based limit states design Standards.

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.

Notes to the text contain information and guidance and are not considered to be an integral part of the Standard.

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CONTENTS

Page

SECTION 1 SCOPE AND GENERAL

1.1 SCOPE....................................................................................................................4

1.2 APPLICATION........................................................................................................5

1.3 REFERENCED DOCUMENTS......................................................................................5

1.4 DEFINITIONS............................................................................................................5

1.5 NOTATION................................................................................................................7

SECTION 2 STRUCTURAL DESIGN PROCEDURE

2.1 GENERAL................................................................................................................9

2.2 ULTIMATE LIMIT STATES........................................................................................9

2.3 SERVICEABILITY LIMIT STATES..............................................................................9

SECTION 3 ANNUAL PROBABILITY OF EXCEEDANCE (FOR NEW ZEALAND USE ONLY)

3.1 GENERAL..............................................................................................................11

3.2 IMPORTANCE LEVELS............................................................................................11

3.3 DESIGN WORKING LIFE..........................................................................................11

3.4 ANNUAL PROBABILITY OF EXCEEDANCE................................................................11

SECTION 4 COMBINATIONS OF ACTIONS

4.1 GENERAL..............................................................................................................13

4.2 COMBINATIONS OF ACTIONS FOR ULTIMATE LIMIT STATES................................13

4.3 COMBINATIONS OF ACTIONS FOR SERVICEABILITY LIMIT STATES......................15

4.4 CYCLIC ACTIONS....................................................................................................15

SECTION 5 METHODS OF ANALYSIS

5.1 GENERAL..............................................................................................................16

5.2 STRUCTURAL MODELS..........................................................................................16

SECTION 6 STRUCTURAL ROBUSTNESS

6.1 GENERAL..............................................................................................................17

6.2 LOAD PATHS..........................................................................................................17

SECTION 7 CONFIRMATION METHODS

7.1 GENERAL..............................................................................................................18

7.2 ULTIMATE LIMIT STATES......................................................................................18

7.3 SERVICEABILITY LIMIT STATES............................................................................18

APPENDICES

A SPECIAL STUDIES....................................................................................................19

B USE OF TEST DATA FOR DESIGN............................................................................20

C GUIDELINES FOR SERVICEABILITY LIMIT STATES................................................24

D FACTORS FOR USE WITH AS 1170.4—1993................................................................27

E FACTORS FOR USE WITH AS 1170.3—1990................................................................29

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