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AS 4100—1998

Australian Standard^TM

Steel structures

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AS IS

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仅供参考

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禁止一切非法目的和活动行为，否则后果自负。

NOT FOR PUBLIC RELEASE

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Foreword

This Australian Standard was prepared by Committee BD/1, Steel Structures. It was approved on behalf of the Council of Standards Australia on 17 April 1998 and published on 5 June 1998.

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The following interests are represented on Committee BD/1:

• Association of Consulting Engineers Australia
• Australian Construction Services
• Australian Institute of Steel Construction
• AUSTROADS
• Building Management Authority, W.A.
• Bureau of Steel Manufacturers of Australia
• CSIRO, Division of Building, Construction and Engineering
• Confederation of Australian Industry
• Institution of Engineers, Australia
• Metal Trades Industry Association of Australia
• New Zealand Heavy Engineering Research Association
• Public Works Department, N.S.W.
• Railways of Australia Committee
• University of New South Wales
• University of Queensland
• University of Sydney
• Welding Technology Institute of Australia

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AS 4100—1998

Australian Standard^TM

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Steel structures

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Originated in part as SAA INT 351—1956.
Previous edition AS 4100—1990.
Second edition 1998.

PUBLISHED BY STANDARDS AUSTRALIA
(STANDARDS ASSOCIATION OF AUSTRALIA)
1 THE CRESCENT, HOMEBUSH, NSW 2140

ISBN 0 7337 1981 3

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PREFACE

This Standard was prepared by the Standards Australia Committee BD/1, Steel Structures, to supersede AS 4100—1990.

The objective of this Standard is to provide designers of steel structures with specifications for steel structural members used for load-carrying purposes in buildings and other structures.

This new edition of the Standard incorporates Amendments No. 1—1992, No. 2—1993, No. 3—1995 and draft Amendment No. 4 issued for public comment as DR 97347. Draft Amendment No. 4 was not published separately as a green slip.

Amendment No. 1—1992 includes the following major changes:

(a) Strength of steels complying with AS 1163 and AS/NZS 1594. (Table 2.1.)

(b) Shear buckling capacity for stiffened web. (Clause 5.11.5.2.)

(c) Bearing buckling capacity. (Clause 5.13.4.)

Amendment No. 2—1993 includes the following major changes:

(a) Shear and bending interaction method. (Clause 5.12.3.)

(b) Minimum area for the design of intermediate transverse web stiffeners. (Clause 5.15.3.)

(c) Section capacity of members subject to combined actions. (Clause 8.3.)

(d) Strength assessment of a butt weld. (Clause 9.7.2.7.)

(e) Fatigue. (Section 11.)

Amendment No. 3—1993 includes the following major changes:

(a) Compressive bearing action on the edge of a web. (Clause 5.13.)

(b) Section capacity of members subject to combined actions. (Clause 8.3.)

(c) In-plane and out-of-plane capacity of compression members. (Clauses 8.4.2.2 and 8.4.41.)

(d) Strength assessment of a butt weld. (Clause 9.7.2.7.)

(e) Earthquake. (Section 13.)

Amendment No. 4 includes the following major changes:

(a) Strengths of steels complying with AS/NZS 3678, AS/NZS 3679.1 and AS/NZS 3679.2. (Table 2.1.)

(b) Minimum edge distance of fasteners. (Clause 9.6.2.)

(c) Permissible service temperatures according to steel type and thickness. (Table 10.4.1.)

(d) Steel type relationship to steel grade. (Table 10.4.4.)

(e) Welding of concentrically braced frames for structures of earthquake Design Category D and E. (Clause 13.3.4.2.)

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 intrgal part of a Standard, whereas an ‘informative’ appendix is only for information and guidance.

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CONTENTS

Page

SECTION 1 SCOPE AND GENERAL

1.1 SCOPE AND APPLICATION 8

1.2 REFERENCED DOCUMENTS 8

1.3 DEFINITIONS 8

1.4 NOTATION 11

1.5 USE OF ALTERNATIVE MATERIALS OR METHODS 21

1.6 DESIGN 21

1.7 CONSTRUCTION 22

SECTION 2 MATERIALS

2.1 YIELD STRESS AND TENSILE STRENGTH USED IN DESIGN 23

2.2 STRUCTURAL STEEL 23

2.3 FASTENERS 23

2.4 STEEL CASTINGS 24

SECTION 3 GENERAL DESIGN REQUIREMENTS

3.1 DESIGN 29

3.2 LOADS AND OTHER ACTIONS 29

3.3 STABILITY LIMIT STATE 30

3.4 STRENGTH LIMIT STATE 30

3.5 SERVICEABILITY LIMIT STATE 31

3.6 STRENGTH AND SERVICEABILITY LIMIT STATES BY LOAD TESTING 32

3.7 BRITTLE FRACTURE 32

3.8 FATIGUE 32

3.9 FIRE 32

3.10 EARTHQUAKE 32

3.11 OTHER DESIGN REQUIREMENTS 32

SECTION 4 METHODS OF STRUCTURAL ANALYSIS

4.1 METHODS OF DETERMINING ACTION EFFECTS 33

4.2 FORMS OF CONSTRUCTION ASSUMED FOR STRUCTURAL ANALYSIS 33

4.3 ASSUMPTIONS FOR ANALYSIS 34

4.4 ELASTIC ANALYSIS 34

4.5 PLASTIC ANALYSIS 39

4.6 MEMBER BUCKLING ANALYSIS 40

4.7 FRAME BUCKLING ANALYSIS 43

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