DESIGN OF PRESTRESSED CONCRETE
Preface vii Notation xiii 1 Basic concepts 1 1.1 Introduction 1 1.2 Methods of prestressing 2 1.3 Introductory example 4 1.4 Transverse forces caused by draped tendons 6 1.5 Calculation of elastic stresses 9 1.6 Flexural behaviour—from initial to ultimate loads 15 1.7 Design procedures 17 1.8 References 28 2 Design properties of materials 29 2.1 Introduction 29 CONCRETE 2.2 Composition of concrete 30 2.3 Strength of concrete 30 2.4 Deformation of concrete 34 2.5 Predictions of the creep coefficient and shrinkage 42 2.6 Thermal expansion 47 STEEL 2.7 Steel used for prestressing 48 2.8 Steel relaxation 52 2.9 Non-prestressed reinforcement 54 2.10 References 58 Page x 3 Design for serviceability 60 3.1 Introduction 60 3.2 Stress limits 61 3.3 Determination of prestress and eccentricity in flexural members 64 3.4 Cable profiles 75 3.5 Short-term analysis of cross-sections 77 3.6 Time-dependent analysis of cross-sections 89...