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AS 5100.4:2017
[Current]Bridge design, Part 4: Bearings and deck joints
Sets out minimum design and performance requirements for bearings and deck joints for the articulation and accommodation of movements of bridge structures. It does not apply to concrete hinges.
Published: 31/03/2017
Pages: 93
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope
2 Normative references
3 Definitions
4 Notation and abbreviations
4.1 Notation
4.2 Abbreviations
5 Functions of bearings and deck joints
6 Loads, movements and rotations
7 General design requirements
7.1 Design considerations
7.2 Specification of bearing design requirements
7.3 Design life
7.4 Limit state requirements
7.5 Provision for construction tolerances
7.6 Provision for replacement
7.7 Provision for resetting
7.8 Provision for handling
7.9 Access
7.10 Durability
8 Movement restraints
8.1 General
8.2 Design loads
9 Alignment of bearings and deck joints
10 Anchorage of bearings
10.1 Pot, spherical and mechanical bearings
10.2 Elastomeric bearings
10.3 Restraint of superstructures for earthquakes and accidental impacts
11 Loads resulting from resistance to movement
11.1 General
11.2 Frictional restraint of sliding surfaces
11.3 Reaction to sliding of multiple bearings
11.4 Shear resistance of elastomeric bearings
12 Elastomeric bearings
12.1 General
12.2 Physical properties of elastomer
12.3 General requirements
12.4 Design principles
12.4.1 General
12.4.2 Bearing rotations
12.5 Basis of design
12.5.1 General
12.5.2 Shape factor
12.6 Design requirements
12.6.1 Maximum shear strain in laminated elastomeric bearings
12.6.2 Compressive stress on elastomeric bearings
12.6.3 Shear strain due to tangential movements and forces
12.6.4 Rotational limitation
12.6.5 Stability of bearings
12.6.6 Thickness of metal plates
12.6.7 Fixing of bearings
12.6.8 Compressive deflection
12.7 Bearing stiffnesses
12.7.1 Compressive stiffness
12.7.2 Shear stiffness
12.7.3 Rotational stiffness
12.7.4 Inclined elastomeric bearings
12.8 Creep
12.9 Load testing of elastomeric bearings
13 Pot bearings
13.1 Design
13.1A High performance pot bearings
13.2 Load testing
13.3 Bearing identification and movement scale
14 Spherical approved sliding material (ASM) bearings
14.1 General
14.2 Design
14.3 Load testing
14.4 Bearing identification and movement scale
14.5 Curved sliding contact surfaces
14.5.1 Materials
14.5.2 Approved sliding materials (ASM)
14.6 Design requirements
14.6.1 General
14.6.2 Design verification for curved sliding surfaces
14.6.2.1 General
14.6.2.2 Separation of sliding surfaces
14.6.2.3 Compressive load limit
15 Plane sliding contact surfaces
15.1 General
15.2 Materials
15.3 Design requirements
16 Mechanical bearings
16.1 General
16.2 Loads and load effects
16.3 Steel and cast iron roller and rocker bearings
16.3.1 General
16.3.2 Cylinder on a curved surface
16.3.3 Cylinder on flat surface
16.3.4 Sphere in spherical seating
16.3.5 Sphere on a flat surface
16.3.6 Multiple rollers
16.4 Knuckle and leaf bearings
16.4.1 General
16.4.2 Bearing capacity
17 Load distribution from bearings to concrete elements
18 Bearings subject to uplift
19 Deck joints
19.1 General
19.2 Joint types
19.3 Requirements
19.3.1 General
19.3.2 Design loads for road bridges
19.3.3 Fatigue design for road bridges
19.3.4 Movements
19.3.5 Gap width for road bridges
19.4 Anchorage of deck joints for road bridges
19.5 Drainage for road bridges
19.6 Installation
19.7 Joint sealants
19.7.1 General
19.7.2 Sealants and joint fillers
20 Modular bridge expansion joints (MBEJ)
20.1 Scope
20.2 Definitions
20.2.1 Multiple support bar MBEJ system
20.2.2 Single support bar MBEJ system
20.2.3 Swivel joist system
20.2.4 Dynamic amplification factor (DAF)
20.3 Design
20.3.1 General arrangement
20.3.2 Design service life
20.3.3 Limit states
20.3.4 Material properties and design methodology
20.3.5 Joint opening
20.3.6 Axle load
20.3.7 Distribution factor
20.3.8 Horizontal force factors
20.3.9 Dynamic amplification factor (DAF)
20.3.10 Application of the DAF
20.3.11 Design loads
20.4 Fatigue limit state
20.4.1 General
20.4.2 Centre beams
20.4.3 Support bars
20.4.4 Welded connection between support bar and centre beam
20.4.5 Yoke and its connections
20.4.6 Bolted yoke connection
20.4.7 Welded yoke connection
20.4.8 Welded plates for sliding surfaces
20.4.9 Spring buffer attachments
20.4.10 Replaceable items
20.5 Ultimate limit state (ULS)
20.5.1 General
20.5.2 Centre beams
20.5.3 Edge beams
20.5.4 Support boxes
20.5.5 Connections
20.6 Serviceability limit state (SLS)
20.6.1 General
20.6.2 Elastomeric bearings
20.7 Design features and fabrication details
20.7.1 Anchorage of edge beams
20.7.2 Weld detailing
20.7.3 Corrosion protection
20.7.4 Seals
20.7.5 Springs
20.8 Installation of MBEJ
20.8.1 General
20.8.2 Maintenance manual and certification of the MBEJ
20.9 Additional requirements
20.9.1 Noise under traffic
20.9.2 Provisions for handling and erection
20.9.3 Provisions for maintenance
Appendix A
Appendix B
B1 Scope
B2 Material
B3 Elastomer properties
B4 Methods of physical property test
B4.1 Hardness
B4.2 Curemeter vulcanization characteristics
B4.3 Tensile strength and elongation at break
B4.4 Ageing
B4.5 Compression set
B4.6 Elastomer-to-reinforcement bond
B4.7 Tear strength
B4.8 Ozone resistance
B4.9 Low temperature stiffening
B4.10 Shear modulus
B5 Frequency of tests
B5.1 Ongoing development of a compound
B5.2 Subsequent batches
Appendix C
C1 Scope
C2 Tolerances
C2.1 Plan size
C2.2 Thickness of elastomer layers
C2.2.1 General
C2.2.2 Inner layer
C2.2.3 Top and bottom cover layers
C2.2.4 Overall thickness
C2.2.5 Parallelism of top and bottom surfaces
C2.2.6 Flatness of top and bottom surfaces
C2.2.7 Side cover thickness
C3 Steel plate tolerances
Appendix D
D1 Scope
D2 Compression quality assurance test
D3 Compression stiffness test
D4 Shear stiffness test
D4.1 General
D4.2 Method
D5 Tolerance on shear stiffness
Appendix E
E1 Expansion joint openings
E2 Horizontal forces
E3 Additional requirements for skewed expansion joints
Appendix F
F1 Test description
F2 Measurement of frequency response functions
F2.1 MBEJ system
F2.2 Bearings and pre-compression springs
F2.2.1 Test procedure
F2.2.2 Alternative test procedure No.1
F2.2.3 Alternative test procedure No.2
F3 Extraction of modal parameters
F4 Analysis and report
Bibliography
Amendment control sheet
AS 5100.4:2017
Amendment No. 1 (2023)
Correction amendment
Cited references in this standard
AZ/NZS 1554.5
Structural steel welding, Part 5: Welding of steel structures subject to high levels of fatigue loading
[Current]
Methods of test for elastomers, Method 11: Tension testing of vulcanized or thermoplastic rubber
[Current]
Methods of test for elastomers, Method 12: Rubber, vulcanized or thermoplastic — Determination of tear strength (trouser, angle and crescent test pieces)
[Withdrawn]
Methods of test for elastomers, Method 14.1: Adhesive strength of vulcanized or thermoplastic rubber — One-plate method
Content history
[Current]
[Superseded]
[Superseded]
[Superseded]
DR 5100.4:2016
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