Stelios Antoniou

Seismic Retrofit of Existing Reinforced Concrete Buildings (eBook, PDF)

• Format: PDF

Produktbeschreibung

Seismic Retrofit of Existing Reinforced Concrete Buildings Understand the complexities and challenges of retrofitting building infrastructure Across the world, buildings are gradually becoming structurally unsound. Many were constructed before seismic load capacity was a mandatory component of building standards, and were often built with low-quality materials or using unsafe construction practices. Many more are simply aging, with materials degrading, and steel corroding. As a result, efforts are ongoing to retrofit existing structures, and to develop new techniques for assessing and enhancing seismic load capacity in order to create a safer building infrastructure worldwide. Seismic Retrofit of Existing Reinforced Concrete Buildings provides a thorough book-length discussion of these techniques and their applications. Balancing theory and practice, the book provides engineers with a broad base of knowledge from which to approach real-world seismic assessments and retrofitting projects. It incorporates knowledge and experience frequently omitted from the building design process for a fuller account of this critical engineering subfield. Seismic Retrofit of Existing Reinforced Concrete Buildings readers will also find: * Detailed treatment of each available strengthening technique, complete with advantages and disadvantages * In-depth guidelines to select a specific technique for a given building type and/or engineering scenario * Step-by-step guidance through the assessment/retrofitting process Seismic Retrofit of Existing Reinforced Concrete Buildings is an ideal reference for civil and structural engineering professionals and advanced students, particularly those working in seismically active areas.

---

Dieser Download kann aus rechtlichen Gründen nur mit Rechnungsadresse in A, B, BG, CY, CZ, D, DK, EW, E, FIN, F, GR, HR, H, IRL, I, LT, L, LR, M, NL, PL, P, R, S, SLO, SK ausgeliefert werden.

Produktdetails

• Verlag: John Wiley & Sons
• Seitenzahl: 544
• Erscheinungstermin: 24. Januar 2023
• Englisch
• ISBN-13: 9781119987338
• Artikelnr.: 67361904

Autorenporträt

Stelios Antoniou, Ph.D, is Managing Director of Seismosoft Ltd., a company that develops state-of-the-art software tools for nonlinear analysis, structural assessment, and structural strengthening, as well as CEO and Director of the Repair and Strengthening Section of Alfakat S.A., a construction company specializing in seismic load strengthening and retrofits. He holds degrees in civil engineering and earthquake engineering from the National Technical University of Athens, Greece, as well as both an MSc in Earthquake Engineering and a Ph.D. in advanced structural analysis from Imperial College, London, UK.

Inhaltsangabe

Foreword by Rui Pinho xvii

Acknowledgments xvix

1 Introduction 1

1.1 General 1

1.2 Why Do Old RC Buildings Need Strengthening? 3

1.3 Main Differences Between Assessment and Design Methodologies 4

1.4 Whom Is this Book For? 7

1.5 Main Standards for the Seismic Evaluation of Existing Structures 8

References 12

2 Know Your Building: The Importance of Accurate Knowledge of the Structural Configuration 15

2.1 Introduction 15

2.2 What Old RC Buildings Are Like 16

2.2.1 Lack of Stirrups 17

2.2.2 Unconventional Reinforcement in the Members 18

2.2.3 Large, Lightly Reinforced Shear Walls or Lack of Shear Walls 19

2.2.4 Lap Splices 22

2.2.5 Corrosion 22

2.2.6 Geometry: Location of Structural Members 25

2.2.7 Geometry: Bad Alignment of the Columns 25

2.2.8 Geometry: Arbitrary Alterations During Construction or During the Building's Lifetime 26

2.2.9 Bad Practices with Respect to the Mechanical and Electrical Installations 26

2.2.10 Soft Ground Stories 28

2.2.11 Short Columns 28

2.2.12 Different Construction Methods 30

2.2.13 Foundation Conditions 30

2.2.14 Discussion 32

2.2.15 One Final Example 34

2.3 How Come Our Predecessors Were So Irresponsible? 34

2.4 What the Codes Say - Knowledge Level and the Knowledge Factor 36

2.5 Final Remarks 39

References 39

3 Measurement of Existing Buildings, Destructive and Nondestructive Testing 41

3.1 Introduction 41

3.2 Information Needed for the Measured Drawings 41

3.3 Geometry 44

3.4 Details - Reinforcement 46

3.5 Material Strengths 52

3.6 Concrete Tests - Destructive Methods 54

3.7 Concrete Tests - Nondestructive Methods, NDT 55

3.7.1 Rebound Hammer Test 56

3.7.2 Penetration Resistance Test 56

3.7.3 Pull-Off Test 57

3.7.4 Ultrasonic Pulse Velocity Test, UPV 57

3.8 Steel Tests 58

3.9 Infill Panel Tests 58

3.10 What Is the Typical Procedure for Monitoring an Existing Building? 59

3.11 Final Remarks 61

References 62

4 Methods for Strengthening Reinforced Concrete Buildings 63

4.1 Introduction 63

4.2 Literature Review 64

4.3 Reinforced Concrete Jackets 67

4.3.1 Application 67

4.3.2 Advantages and Disadvantages 74

4.3.3 Design Issues: Modeling, Analysis, and Checks 76

4.4 Shotcrete 77

4.4.1 Introduction 77

4.4.2 Dry Mix vs. Wet Mix Shotcrete 79

4.4.3 Advantages and Disadvantages of Shotcrete 80

4.4.4 What Is It Actually Called - Shotcrete or Gunite? 81

4.4.5 Materials, Proportioning, and Properties 81

4.4.5.1 Cement 81

4.4.5.2 Pozzolans 82

4.4.5.3 Silica Fume 82

4.4.5.4 Aggregates 82

4.4.5.5 Water 83

4.4.5.6 Fiber Reinforcement 83

4.4.5.7 Chemical Admixtures and Accelerators 85

4.4.5.8 Reinforcing Steel 85

4.4.6 Mix Proportions for the Dry-Mix Process 85

4.4.7 Equipment and Crew 86

4.4.7.1 Dry-Mix Process 86

4.4.7.2 Wet-Mix Process 87

4.4.8 Curing and Protection 87

4.4.9 Testing and Evaluation 88

4.5 New Reinforced Concrete Shear Walls 89

4.5.1 Application 89

4.5.2 Foundation Systems of New Shear Walls 97

4.5.3 Advantages and Disadvantages 98

4.5.4 Design Issues: Modeling and Analysis 98