steel concrete composite bridges

PREFACE

I see this book as a journey. A journey of experience from the first simple river crossing to the more complex suspended spans of today. A journey across the world… through to the countless bridges today that perform their task with pride, and always marvelling at how we build so strong, always questioning.

Chapter 0 Introduction to Eurocodes

“… Eurocodes with their 10 volumes some of these with 18 parts, each with their own National Annex, some with 370 separate clauses or sub clauses,

amounting to some 5000 sheets of paper, can seem a daunting document.”

Chapter 1General concepts

“ the composite whole being substantially stronger and stiffer than the sum of the

parts…”

Steel-concrete composite structures are a common and economical form.

This book initially reviews the forms of structure in which composite construction is used, and then each of the more common forms of composite construction is considered in more detail.

Chapter 2Simple beam bridges

“estimation of flange size assumes that the flanges will primarily carry the moments with

only a small contribution from the web..”

Figure 2.2 Layout of Bridge for Example 2.1

Chapter 3Integral bridges

“integral bridges are used for all bridges up to 60 m long …..”

Figure 3.1

Example 3.2

a) maximum and minimum soil pressure;

b) b) bending moments on the portal.

Chapter 4Continuous bridges

“the key benefit of continuity is a reduction

(or elimination) of bearings and joints…”

Chapter 5Viaducts

“..the most efficient form of structure is a two girder system…”

Chapter 6Haunches and double

composite action“a double composite structure …

providing composite action to both the top and bottom flanges ..”

Chapter 7 Box Girders

“.. a triangular structure .. is stiffer and less susceptible to distortion than the

conventional … forms…”

Chapter 8 Trusses

“the simpler truss types ... with linked bracing between bays of bracing that is

directly in line give the best forms..”

Chapter 9Arches

“sculpting bridges ..”

Chapter 10Cable stay bridges

“..have a system of forces that are resolved within the deck-stay-tower

system..”

Chapter 11Prestressed steel-concrete

composites“for the composite section with corrugated

webs.. the reduction in dead load and section area will lead to a reduction in

prestress..”

Chapter 12Assessment of composite

bridges“sometimes we underestimate the full range of ways a structure can behave”

APPENDIX

Appendix A Approximate methodsAppendix B Calculation of elastic section propertiesAppendix C Section properties for examplesAppendix D Calculation of plastic section propertiesAppendix E Calculation of torsional section properties Appendix F Calculation of double composite section propertiesAppendix G Moment axial load interaction for compact steel-

concrete composite section

Presentation by CRD and Wolf productions.