Design of HPS bridge girders with tubular flanges

117 Pages·2015·3.25 MB·English

by  Adrienne Smith

Lehigh University
Lehigh Preserve
Theses and Dissertations
2001
Design of HPS bridge girders with tubular flanges
Adrienne Smith
Lehigh University
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Smith, Adrienne, "Design of HPS bridge girders with tubular flanges" (2001).Theses and Dissertations.Paper 701.
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Smith, Adrienne
DESIGN OF I-IPS
BRIDGE
GIRDERS WITI-I
TlJBlJLAR
FLANGES
June
2001
Design ofHPS Bridge Girders with TubularFlanges
by
Adrienne Smith
AThesis
Presented to the Graduate and Research Committee·
ofLehigh.University
in Candidacyfor the Degree of
MasterofScience
In
CivilEngineering
Lehigh University
May2001

ACKNOWLEDGEMENTS
The author wishes to extendherthanks to herresearchadvisor Prof. Richard
Sause, for his guidancethroughoutthe work.
Special thanks is givento Bong-GyunKim, whose help with everything is
greatly appreciated.
The author would also liketo thankher mom, without whose support none of
this would bepossible.
iii
TABLE OF CONTENTS
LIST OF TABLES
VI
LIST OF FIGURES
V1l1
ABSTRACT
INTRODUTION
1.1. Introduction 3
1.2. Objectives 4
1.3. Scope 5
1.4. Outline ofThesis 5
2. BACKGROUND INFORMATION
2.1. Introduction 6
2.2. LoadDistribution 7
2.2.1. LateralLoadDistribution 7
2.2.2. Live Load Distribution 9
2.3. CompressionFlange Bracing 11
204. ErectionAids 12
2.5. Conclusions 13
3. PROTOTYPEBRIDGES, DESIGNLOADS, LOAD
COMBINATIONS, AND LIMIT STATES
3.1. Introduction 16
3.2. Prototype Bridge 16
3.3. DesignLoads 18
304. Design Criteria 22
304.1. StrengthILimitState 24
...,...,
3.4.2. StrengthIII LimitState and StrengthVLimit State
-'-'
3.4.3. ServiceIILimitState 35
3.4.4. ServiceILimit State 36
304.5. FatigueLimit State 37
4. PROTOTYPEBRIDGEDESIGN PARAMETERS
4.1. Introduction 49
4.2. Cross-Frame Arrangement 49
4.3. Plate Transitions 51
4.4. Transverse Stiffeners 52
4.5. Fatigue 53
4.6. Practical Limits onPlate Dimensions 54
iv
5. DESIGN METHODS AND RESULTS
5.1. Introduction 61
5.2. I-Girders 61
5.3. Composite Tubular Flange Girder 65
5.4. Non-Composite TubularFlange Girders 69
5.5. Through-Girders 73
5.6. Summary ofFindings 76
6. SUMMARY AND CONCLUSIONS
6.1. Summary 101
6.2. Conclusions 102
REFERENCES 104
VITA 105
v
LISTOF TABLES
Table
3.1 DeadLoads for PrototypeBridgewith FourI-Girders 40
3.2 Dead Loads for Prototype Bridge with Four Composite Tubular
Flanges 40
3.3 Dead Loads for PrototypeBridgewith FourNon-Composite
TubularFlange Girders 41
3.4 Dead Loads for Through-GirderPrototype Bridge withTubular
Flange Girders 41
3.5 ConstantAmplitudeFatigue Thresholds 42
4.1 Description ofCross-FrameArrangements 56
5.1 Summary ofI-GirderDesigns: Scheme 1, Category C' Fatigue
Details, Web Depth=52in 78
5.2 SummaryofI-GirderDesigns: Scheme 1, Category C' Fatigue
Details, Web Depth= 64 in 79
5.3 Summary ofI-GirderDesigns: Scheme 1, CategoryBFatigue
Details, Web Depth=52 in 80
5.4 Summary ofI-'GirderDesigns: Schemel, CategoryBFatigue
Details, Web Depth=64 in 81
5.5 Summary ofI-GirderDesigns: Scheme 8, Category C' Fatigue
Details, Web Depth==52 in 82
5.6 Summary ofI-GirderDesigns: Scheme 8, Category C' Fatigue
Details, Web Depth=64 in 83
5.7 SummaryofI-GirderDesigns: Scheme 8, Category BFatigue
Details, Web Depth= 52 in 84
5.8 Summary ofI-GirderDesigns: Scheme 8, Category BFatigue
Details, WebDepth=64 in 85
5.9 Summary ofComposite Tubular Flange Girder Designs:
Scheme 9, Web DepthPlusTubeDiameter=52 in 86
5.10 Summary ofCompositeTubularFlange GirderDesigns:
Scheme 9, Web DepthPlus TubeDiameter= 64 in 87
5.11 Summary ofComposite TubularFlange Girder Designs:
Scheme 1and 10, Web DepthPlusTube Diameter=52 in 88
5.12 Summary ofCompositeTubularFlange GirderDesigns:
Scheme 1and 10, Web DepthPlus Tube Diameter=64 in 89
5.13 Summary ofNon-Composite TubularFlange GirderDesigns:
Scheme 9, CategoryB Fatigue Details,
Web Depth Plus Tube Diameter=52 in 90
VI
5.14 Summary ofNon-Composite TubularFlange GirderDesigns:
Scheme 9, Category BFatigue Details,
Web DepthPlus Tube Diameter=64.in 91
5.15 Summary ofThrough-GirderDesigns: Category BFatigue
Details, Unstiffened, Web Depth Plus TubeDiameter= 83 in. 92
5.16 Summary ofThrough-GirderDesigns: Category BFatigue
Details, Unstiffened, Web Depth Plus Tube Diameter = 95 in. 93
vii
LIST OF FIGURES
Figure
2.1 Typical Intermediate Cross-Frame 14
2.2 WindLoadTransmittedto the Deck atIntermediate Cross-Frames 14
2.3 WindLoadTransmitted from the Deckto the Bearings by the
End Cross-Frames 15
3.1 Four-Girder Prototype Bridge 43
3.2 Two-Girder Prototype Bridge 43
3.3 UnfactoredDead and Live Load MomentEnvelopes for
Four-Girder PrototypeBridge withI-Girders 44
3.4 UnfactoredDead and Live Load ShearEnvelopes for Four-Girder
Prototype Bridge withI-Girders 44
3.5 UnfactoredDcMomentEnvelopes for Four-GirderPrototype
Bridge 45
3.6 UnfactoredDead and Live LoadMomentEnvelopes for
Two-GirderPrototype Bridge 46
3.7 UnfactoredDead and Live Load Shear Demands.forTwo-Girder
Prototype Bridge 46
3.8 Positive Nominal MomentResistanceofthe Composite Section 47
3.9 Lateral-Torsional Buckling Resistance 47
3:10 S-N Curve 48
4.1 Cross-Frame Arrangements 57
4.2 PlateTransitionLocations 58
4.3 Typical Category C' Fatigue Detail 59
4.4 Typical Category BFatigue Detail with BoltedConnection 60
4.5 Typical Category BFatigueDetail with Weldedand Bolted
Connection 60
5.1 I-Girders: Category C' FatigueDetails; Scheme 1Cross-Frame
Arrangement 94
5.2 I-Girders: Category BFatigue Details; Scheme 1Cross-Frame
Arrangement 94
5.3 I-Girders: Category C' Fatigue Details; Scheme 8Cross-Frame
Arrangement 95
5.4 I-Girders: Category BFatigue Details; Scheme 8Cross-Frame
Arrangement 95
5.5 Composite TubularFlange Girders: Scheme 9Cross-Frame
Arrangement 96
5.6 Composite Tubular Flange Girders: Unstiffened, Category B
viii