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miércoles, 7 de octubre de 2015

MOVABLE BRIDGE DESIGN











                                         


 



MOVABLE BRIDGE DESING
Charles Birnstiel, William Bowden and George Foerster
 
  • Páginas: 425
  • Tamaño: 17x24
  • Edición:
  • Idioma: Inglés
  • Año: 2015
  • 147,00 Euros 
  •  
  • http://www.ingenieriayarte.com/ingenieria_arte_Puentes_y_pasarelas__Movable_Bridge_Design-5248.php

     
    Movable Bridge Design provides a fascinating and comprehensive guide of both past and current approaches to the design of a wide range of movable bridges.
    Against the background of worldwide development, the author provides the necessary information on the mechanical systems that drive movable bridges.
    A wide range of structures are explored in an accessible format to be used at a practical level.
    Key topics of focus are:
    • Design specifications and standards
    • Machinery required to operate and stabilise movable spans
    • Traditional and non-traditional superstructure forms
    • Materials of construction
    • Material strength and failure
    • Examples of hydraulic, electrical and mechanical systems
    Movable Bridge Design considers both city and rural movable bridges by providing worldwide examples, as well as discussing the various forms of motive power.
    An essential purchase to inform and guide engineers, engineering consultants, and administrators of governmental agencies, as well as students from these disciplines.
    Contents
    CONTENTS:

    - Preface
    - Acknowledgements
    - About the authors
    - About the contributors
    - Notation

    Introduction

    Need for movable bridges
    Basic motions of movable spans
    Early movable bridges
    Notable 19th-century movable bridges
    References

    Individual movable spam forms

    Introduction
    Simple trunnion bascules
    Balance beam bascules
    Strauss articulated bascule bridges
    Rolling bascules (Scherzer)
    Swing Bridges
    Vertical lift bridges
    References

    Movable spans in series

    Introduction
    Symbols and notation
    Double-leaf bascule bridges
    Mid-span shear locks
    Double-leaf trunnion girder bascule bridges
    Double-leaf trunnion bascule bridge examples
    Double-leaf rolling bascule bridges
    Tandem swing bridges
    References

    Other movable bridge forms

    Introduction
    Market street bridge,Chattanooga TN
    Armstrong swing bridges
    Movable bridges supported by pontoons
    Transportes bridges
    The Bellmouth passage bridges
    Gateshead Millennium bridge
    Belidor bascules
    Folding bridges
    Other movable bridge forms
    References

    Movable bridge design standards

    Introduction
    Units
    Development of movable bridge design practice
    European movable bridge design practice
    European movable bridge specifications
    USA Railroad bridge safety Standars

    Materials of construction

    Introduction
    Ferrous materials
    Wought iron
    Steels
    Heat treatment of steel general
    Heat treatment of steel gears
    Cast steel
    Hot-rolled steel and hot forging
    Cold finished steel
    Cast iron
    Non-metallic materials
    Wire rope
    References

    Materials properties and failure

    Introduction
    Material specifications
    Tensile properties
    Material hardness
    Fracture of metals
    Residual stresses
    Corrosion
    Stress corrosion cracking
    Hydrogen embrittlement
    Tribology

    Span dive arrangements

    Introduction
    The simple trunnion bascule
    The rolling bascule
    The heel trunnion bascule
    The swing span
    The span drive vertical lift bridge
    The tower drive vertical lift bridge

    Machiney components

    Introduction
    Shafts,couplings and universal joints
    Bearing and bushings
    Drums and sheaves
    Linkages
    Power screws,mechancical jacks and pulling devices
    Crutches and torque limiters
    Gears,racks and differentials
    Parallel shaft,right angle and planetary speed enclosed ger box reducers
    Roller chains and sprockets
    Keys pins retainer rings,shrink fit devices collars and threaded fasteners
    O-rings lip seals and packing material
    Springs
    Closing summary
    References

    Stabilisation machinery

    Introduction
    Bascule bridges
    Swing bridges
    Vertical lift bridges
    References

    Supertrustures structural design

    Introduction
    Common movable bridge superstructure forms
    Bridge decks
    Bascule bridges
    Swing bridges
    Vertical lift bridges
    Movable bridge balancings
    References

    Mechanical design

    Introduction
    Design methods,loading and load factors
    Machinery components design
    Main machinery support components for movable bridges
    Design of shafts general
    Design of plain and anti-friction bearings
    Contact stressess and design of rollers
    Selection of wire rope,drums and sheaves
    Linkage design
    Lock bar design
    Wedge design
    Selection and design of drive machinery for lock bars and wedges
    Selection of shaft couplings
    Interference fits,key and mechanical friction locking devices
    Brake selection
    Bokts
    Welding
    General gearing
    Machinery inspection and maintenance
    Other machinery design considerations
    Summary
    References

    Gearing and speed reducer design

    Introduction
    Symbols and abbreviations
    Gear design
    Inspection fundamentals
    Gear design considerations
    Future considerations
    References

    Hydraulic span drive systems

    Introduction
    Hydraulic system fundamentals
    Hydraulic system components
    Heating and cooling of hydraulic systems
    Reserve power factor
    Hydraulic movable bridge drive types
    Open loop hydraulic cylinder bridge with pump control
    Hydraulic motor drives
    Design loads for machinery
    Design loads for structure
    Synchronising or load sharing in hydraulic systems
    Design example

    Electrical system design

    Introduction
    Prime mover
    AC thyristor drives
    Flux vector drives and motors
    Power synchro unit (synchro-tie)
    Auxiliary motors
    Brakes
    limit switches and resolvers
    Traffic control devices
    Electrical power distribution
    Control system hardware
    Remote control
    Interlocking
    Bypass switches
    Documentation
    Spare parts
    Testing
    References