Design Guide 9: For Structural Hollow Section Column Connections

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Transcript of Design Guide 9: For Structural Hollow Section Column Connections

  • 9

    DESIGN GUIDEFOR STRUCTURAL HOLLOW SECTIONCOLUMN CONNECTIONS

    Y. Kurobane, J. A. Packer, J. Wardenier, N. Yeomans

    TV-Verlag

  • Bibliografische Information der Deutschen Bibliothek

    Die Deutsche Bibliothek verzeichnet diese Publikation in derDeutschen Nationalbibliografie; detaillierte bibliografische Datensind im Internet ber http://dnb.de abrufbar.

    ISBN 3-8249-0802-6

    by TV-Verlag GmbH, TV Rheinland Group, Kln

    Entirely printed by: TV-Verlag GmbH, KlnPrinted in Germany 2004

  • PrefaceSteel structural hollow sections, circular, square and rectangular, are some of the most effi-cient structural sections under compression loading. This design guide has been writtento give the design engineer the information one needs to design hollow section columnconnections in the most efficient and economic way. Steel structural hollow sections areunique in the world of structural steel sections, because their geometry is such that theirmass is distributed away from their longitudinal axis, making them ideal for use ascolumns.

    This design guide is the 9th in a series that CIDECT has published under the general seriesheading Construction with Hollow Steel Sections. The previously published designguides in the series, which are all available in English, French, German and Spanish, are:

    1. Design guide for circular hollow section (CHS) joints under predominantly static load-ing (1991)

    2. Structural stability of hollow sections (1992, reprinted 1996)3. Design guide for rectangular hollow section (RHS) joints under predominantly static

    loading (1992)4. Design guide for structural hollow section columns exposed to fire (1995, reprinted

    1996)5. Design guide for concrete filled hollow section columns under static and seismic

    loading (1995)6. Design guide for structural hollow sections in mechanical applications (1995)7. Design guide for fabrication, assembly and erection of hollow section structures (1998)8. Design guide for circular and rectangular hollow section welded joints under fatigue

    loading (2000)

    CIDECTs sincere and grateful thanks go to the authors of this design guide, Prof. Dr.Yoshiaki Kurobane of Sojo University in Japan, Prof. Dr. Jeffrey Packer of University ofToronto in Canada, Prof. Dr. Jaap Wardenier of Delft University of Technology in TheNetherlands and Mr. Noel Yeomans of Corus Tubes in The United Kingdom, for their thor-oughness and professionalism in writing the various chapters and to CIDECT and its mem-bers for their useful comments and support.

    CIDECT2004

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  • CONTENTS

    1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

    1.1 Design philosophy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

    2 Advantages of hollow section columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

    2.1 Plain columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112.2 Concrete filled columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132.3 Fire protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142.3.1 External fire protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142.3.2 Internal fire protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

    3 Single sided bolting systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

    3.1 Flowdrill drilling system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173.2 Lindapter HolloBolt insert . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193.3 Huck Ultra-Twist bolt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193.4 Stud welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203.5 Other methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

    4 Connection classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

    4.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234.1.1 Elastic behaviour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234.1.2 Plastic behaviour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254.2 Semi-rigid connection design according to Eurocode 3 . . . . . . . . . . . . . . . . . . 274.2.1 Classification of connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284.2.2 Moment capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294.2.3 Rotational stiffness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304.2.4 Rotational capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314.2.5 Conceptual design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

    5 Simple shear connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

    5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335.2 Limit states for simple shear connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345.3 Single shear plate connections (shear tabs, fin plates) . . . . . . . . . . . . . . . . . . . 345.3.1 Connection to RHS column design example . . . . . . . . . . . . . . . . . . . . . . . . . . 365.3.2 Connections to CHS columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 385.3.3 Single shear plate connections to RHS column corner . . . . . . . . . . . . . . . . . . 405.4 Through-Plate connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 405.5 End plate connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415.6 Tee connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 425.7 Single and double angle connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 435.8 Unstiffened seat connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 455.9 Stiffened seat connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 455.10 Hollow section beams to hollow section columns . . . . . . . . . . . . . . . . . . . . . . 505.11 Use of through-bolts to hollow section columns . . . . . . . . . . . . . . . . . . . . . . . 505.12 Influence of concrete slabs on behaviour of connections . . . . . . . . . . . . . . . . . 51

    6

  • 6 Semi-rigid connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

    6.1 Types of semi-rigid connections with hollow section members . . . . . . . . . . . . 536.2 Welded hollow section beam and column connections . . . . . . . . . . . . . . . . . . 546.2.1 CHS beam and column members . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 546.2.2 RHS beam and column members . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 586.2.3 CHS and RHS beam and column members . . . . . . . . . . . . . . . . . . . . . . . . . . . 646.3 Welded I-beam-to-hollow section column connections . . . . . . . . . . . . . . . . . . . 646.3.1 I-beam-to-CHS column connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 666.3.2 I-beam-to-RHS column connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 736.4 Bolted hollow section beam and column connections . . . . . . . . . . . . . . . . . . . 786.4.1 CHS beam-to-column connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 786.4.2 RHS beam-to-column connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 786.5 Bolted I-beam-to-hollow section column connections . . . . . . . . . . . . . . . . . . . 796.5.1 I-beam-to-CHS column connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 806.5.2 I-beam-to-RHS column connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 806.6 Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

    Example 1: CHS beams and columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85Example 2: RHS beams and columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89Example 3: I-beams and CHS columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92Example 4: Bolted I-beam-to-RHS column connection . . . . . . . . . . . . . . . . . . . 94

    7 Special requirements for seismic loading . . . . . . . . . . . . . . . . . . . . . . . . . . 97

    7.1 Dissipative and non-dissipative structural behaviours . . . . . . . . . . . . . . . . . . . 987.2 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 987.3 Structural types and behaviour factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 997.4 Joints in dissipative zones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1017.5 Strong column-weak beam design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1017.6 Beam-to-column moment connections (rigid and full-strength