Design of Steel-Concrete Composite Bridges to Eurocodes

Design of Steel-Concrete Composite Bridges to Eurocodes

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Features

  • Combines solid theoretical foundation with bridge engineering practice
  • Includes general code independent material on conceptual design and structural analysis
  • Covers a broad spectrum of subjects such as materials, actions, strength, stability, serviceability, fatigue, seismic design, and bearings
  • Includes many illustrative design examples
  • Bases information on modern international regulations, the Eurocodes, widely used worldwide

Summary

Combining a theoretical background with engineering practice, Design of Steel-Concrete Composite Bridges to Eurocodes covers the conceptual and detailed design of composite bridges in accordance with the Eurocodes. Bridge design is strongly based on prescriptive normative rules regarding loads and their combinations, safety factors, material properties, analysis methods, required verifications, and other issues that are included in the codes. Composite bridges may be designed in accordance with the Eurocodes, which have recently been adopted across the European Union. This book centers on the new design rules incorporated in the EN-versions of the Eurocodes.

The book addresses the design for a majority of composite bridge superstructures and guides readers through the selection of appropriate structural bridge systems. It introduces the loads on bridges and their combinations, proposes software supported analysis models, and outlines the required verifications for sections and members at ultimate and serviceability limit states, including fatigue and plate buckling, as well as seismic design of the deck and the bearings. It presents the main types of common composite bridges, discusses structural forms and systems, and describes preliminary design aids and erection methods. It provides information on railway bridges, but through the design examples makes road bridges the focal point.

This text includes several design examples within the chapters, explores the structural details, summarizes the relevant design codes, discusses durability issues, presents the properties for structural materials, concentrates on modeling for global analysis, and lays down the rules for the shear connection. It presents fatigue analysis and design, fatigue load models, detail categories, and fatigue verifications for structural steel, reinforcement, concrete, and shear connectors. It also covers structural bearings and dampers, with an emphasis on reinforced elastomeric bearings. The book is appropriate for structural engineering students, bridge designers or practicing engineers converting from other codes to Eurocodes.

Table of Contents

Introduction

General

List of symbols

Types of steel–concrete composite bridges

General

Composite bridges: The concept

Highway bridges

Railway bridges

Construction forms

Erection methods

Concreting sequence

Execution

Innovation in composite bridge engineering

References

Design codes

Eurocodes

National annexes

References

Actions

Classification of actions

Traffic loads on road bridges

Actions for accidental design situations

Actions on pedestrian parapets and railings

Load models for abutments and walls in contact with earth

Traffic loads on railway bridges

Temperature

Wind

Earthquake

References

Basis of design

General

Limit state design

Ultimate limit state (ULS)

Serviceability limit state (SLS)

Safety factors of resistances

Durability

References

Structural materials

Concrete

Structural steel

Reinforcing steel

Prestressing steel

Bolts

Stud shear connectors

References

Modeling and methods for global analysis

Global analysis models

Effective width of wide flanges due to shear lag

Cross-sectional properties

Effects of the rheological behavior of concrete on structural systems

Models for slab analysis and design in transverse direction

Finite element models for global analysis

References

Buckling of plated elements

Introduction

Elastic critical stress

Strength of plates

Design by the reduced stress method

Effective width method

Member verification for axial compression and bending

Resistance to shear

Resistance to concentrated transverse forces

Interaction

Flange-induced buckling

Design of stiffeners and detailing

References

Ultimate limit states

Classification of cross sections

Resistance to tension: Allowance for fastener holes in bending capacity

Resistance of steel members and cross sections to compression

Resistance to shear due to vertical shear and torsion

Resistance to bending of steel cross sections

Interaction of bending with shear for steel cross sections

Class 1 and 2 cross sections

Cross sections with class 3 webs that may be treated as class 2 sections (hole-in-web method)

Class 3 cross sections

Class 4 cross sections that are treated as class 3 cross sections

Class 4 cross sections

Class 4 cross sections composed of the flanges

Lateral torsional buckling

Design of the concrete deck slab

References

Serviceability limit states

Introduction

Stress analysis and limitations

Cracking of concrete

Web breathing

Deflections

Vibrations

References

Fatigue

General

Fatigue resistance to constant amplitude loading

Fatigue resistance to variable amplitude loading

Detail categories

Fatigue load models and simplified fatigue analysis

Fatigue verification for structural steel

Fatigue verification for headed studs

Fatigue verification for reinforcing steel

Fatigue verification for concrete

Possibilities of omitting fatigue assessment

Residual stresses and postweld treatment

References

Shear connection

Introduction

Resistance and detailing of headed stud shear connectors

Longitudinal shear for elastic behavior

Longitudinal shear for inelastic behavior

Longitudinal shear due to concentrated forces

Longitudinal shear in concrete slabs

Shear connection of composite closed box bridges

References

Structural bearings, dampers, and expansion joints

General

Reinforced elastomeric bearings

Spherical bearings

Pot bearings

Seismic isolation

Anchorage of bearings

Calculation of movements and support reactions

Bearing schedules, support plans, and installation drawings

Fluid viscous dampers

Friction devices

Expansion joints

References

Index

Author Bio(s)

 
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