Reinforced and Prestressed Concrete: Analysis and Design with Emphasis on Application of AS3600-2009

461 Pages·2010·3.8 MB·English

by  Yew-Chaye Loo

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Reinforced and Prestressed Concrete
Analysis and design with emphasis on the
application of AS 3600-2009
ReinforcedandPrestressedConcreteisthemostcomprehensive,up-to-the-minutetext
forstudentsandinstructorsincivilandstructuralengineering,andforpractising
engineersrequiringafullgraspofthelatestAustralianConcreteStructuresStandard,
AS3600-2009.
Topicsarepresentedindetail,coveringthetheoreticalandpracticalaspectsof
analysisanddesign,withanemphasisontheapplicationofAS3600-2009.Thefirst
majornationalcodetoembracetheuseofhigh-strengthconcreteofupto100MPa,
thelatestStandardalsoincludesmajortechnologicalupgrades,newanalysisand
designformulas,andnewandmoreelaborateprocesses.Thistextaddressesallsuch
advances,andfeatureschaptersonbending,shear,torsion,bond,deflectionand
cracking,beams,slabs,columns,walls,footings,pilecapsandretainingwalls,aswell
asprestressedbeamsandendblocksplusanexpositiononstrut-and-tiemodelling.
Withanabundanceofappliedexamples,ReinforcedandPrestressedConcreteisan
essentialresourceforbothstudentsandengineersintheircontinuinglearningand
professionaleducation.
Instructorswebsitewww.cambridge.edu.au/academic/concrete
Asecureandexclusivewebsitecontainingthesolutionstoover70tutorialproblems
presentedinthebook.Thewebsitewillalsoprovideupdatesresultingfrom
amendmentstotheAS3600-2009astheyoccur.
Yew-ChayeLoo,PhD,FIEAust,FICE,FIStructE,CPEng,NPER,CEngisFoundation
ProfessorofCivilEngineeringatGriffithUniversityinQueensland.Heisaformer
DeanofEngineeringandInformationTechnologyandisnowDirector,
InternationalisationandProfessionalLiaisonfortheScience,Environmentand
EngineeringTechnologyGroup.
SanaulHuqChowdhury,PhD,MIEAust,CPEng,NPERisLecturerinStructural
EngineeringandMechanicsatGriffithSchoolofEngineering,GriffithUniversity.

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Reinforced and Prestressed Concrete
Analysis and design with emphasis on the
application of AS 3600-2009
Yew-Chaye Loo
Sanaul Huq Chowdhury
CAMBRIDGE UNIVERSITY PRESS
Cambridge, New York, Melbourne, Madrid, Cape Town, Singapore,
São Paulo, Delhi, Dubai, Tokyo
Cambridge University Press
The Edinburgh Building, Cambridge CB2 8RU, UK
Published in the United States of America by Cambridge University Press, New York
www.cambridge.org
Information on this title: www.cambridge.org/9780521141475
© Yew-Chaye Loo, Sanaul Huq Chowdhury 2010
This publication is in copyright. Subject to statutory exception and to the
provision of relevant collective licensing agreements, no reproduction of any part
may take place without the written permission of Cambridge University Press.
First published in print format 2010
ISBN-13 978-0-511-90943-6 eBook (NetLibrary)
ISBN-13 978-0-521-14147-5 Paperback
Cambridge University Press has no responsibility for the persistence or accuracy
of urls for external or third-party internet websites referred to in this publication,
and does not guarantee that any content on such websites is, or will remain,
accurate or appropriate.
Reproduction and communication for educational purposes:
The Australian Copyright Act 1968 (the Act) allows a maximum of one chapter or
10% of the pages of this work, whichever is the greater, to be reproduced and/or
communicated by any educational institution
for its educational purposes provided that the educational institution (or the body
that administers it) has given a remuneration notice to Copyright Agency Limited
(CAL) under the Act.
InMemoryofOurParents
LooKhaiKee(1900–1989)
LauChing(1902–1961)
ShamsulHaqueChowdhury(1920–1999)
SyedaNurunNaharChowdhury(1930–2007)

vii
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Contents
Preface pagexvii
Acknowledgements xx
Notation xxi
Acknowledgementsfortablesanddiagrams xxx
Acronymsandabbreviations xxxi
Part I Reinforced concrete 1
1 Introduction 3
1.1 Historicalnotes 3
1.2 Designrequirements 4
1.3 Loadsandloadcombinations 5
1.3.1 Strengthdesign 5
1.3.2 Serviceabilitydesign 6
1.3.3 Application 7
1.4 Concretecoverandreinforcementspacing 7
1.4.1 Cover 7
1.4.2 Spacing 11
2 Designpropertiesofmaterials 12
2.1 Concrete 12
2.1.1 Characteristicstrengths 12
2.1.2 Standardstrengthgrades 13
2.1.3 Initialmodulusandotherconstants 13
2.2 Steel 14
2.3 Unitweight 17
3 Ultimatestrengthanalysisanddesignforbending 18
3.1 Definitions 18
3.1.1 Analysis 18
3.1.2 Design 18
3.1.3 Ultimatestrengthmethod 18
3.2 Ultimatestrengththeory 19
3.2.1 Basicassumptions 19
3.2.2 Actualandequivalentstressblocks 19
3.3 Ultimatestrengthofasinglyreinforcedrectangularsection 21
3.3.1 Tension,compressionandbalancedfailure 21
3.3.2 Balancedsteelratio 22
3.3.3 Momentequationfortensionfailure(under-reinforced
sections) 23
3.3.4 Momentequationforcompressionfailure(over-reinforced
sections) 24
viii Contents
3.3.5 Effectivemomentcapacity 25
3.3.6 Illustrativeexampleforultimatestrengthofasingly
reinforcedrectangularsection 26
3.3.7 Spreadofreinforcement 28
3.4 Designofsinglyreinforcedrectangularsections 31
3.4.1 Freedesign 31
3.4.2 Restricteddesign 32
3.4.3 Designexample 33
3.5 Doublyreinforcedrectangularsections 35
3.5.1 CriteriaforyieldingofA atfailure 36
sc
3.5.2 Analysisformulas 37
3.5.3 Illustrativeexamples 39
3.5.4 Othercases 41
3.5.5 Summary 44
3.6 Designofdoublyreinforcedsections 44
3.6.1 Designprocedure 44
3.6.2 Illustrativeexample 47
3.7 T-beamsandotherflangedsections 49
3.7.1 Generalremarks 49
3.7.2 Effectiveflangewidth 50
3.7.3 CriteriaforT-beams 54
3.7.4 Analysis 54
3.7.5 Designprocedure 56
3.7.6 DoublyreinforcedT-sections 57
3.7.7 Illustrativeexamples 58
3.8 Nonstandardsections 61
3.8.1 Analysis 61
3.8.2 Illustrativeexample 63
3.9 Continuousbeams 65
3.10 Problems 66
4 Deflectionofbeamsandcrackcontrol 74
4.1 Generalremarks 74
4.2 Deflectionformulas,effectivespananddeflectionlimits 75
4.2.1 Formulas 75
4.2.2 Effectivespan 75
4.2.3 Limits 76
4.3 Short-term(immediate)deflection 76
4.3.1 Effectsofcracking 76
4.3.2 Branson’seffectivemomentofinertia 78
4.3.3 Loadcombinations 80
4.3.4 Illustrativeexample 80
4.3.5 Cantileverandcontinuousbeams 81
4.4 Long-termdeflection 83