Structural Timber Design - Werner Seim

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Résumé :

List of Fact Sheets xi

Preface xiii

About the Author xv

Symbols and Abbreviations xvii

1 Timber as a Structural Material 1

1.1 Building with Timber: Advantages and Challenges 1

1.2 Mechanical Properties of Solid Timber 2

1.2.1 Influence of the Fibre Direction 3

1.2.2 Strength Values of Solid Timber 3

1.2.3 Deformation Properties of Solid Timber 5

1.2.4 Influence of Load Duration and Humidity 8

1.3 Wood-based Products 10

1.3.1 Solid Structural Timber and Glued Solid Timber 10

1.3.2 Glued Laminated Timber 11

1.3.3 Cross-laminated Timber 13

1.4 Wood-based Materials 14

1.4.1 Laminated Veneer Lumber 14

1.4.2 Plywood 14

1.4.3 Oriented Strand Boards 15

1.4.4 Particle Boards 15

1.4.5 Fibreboards 16

References 17

Standards and Technical Building Regulations 17

2 Structural Design of Beam-type Members 19

2.1 Basics of Structural Design 19

2.1.1 Action Combinations 21

2.1.2 Modification Factors and Deformation Factors 22

2.2 Bending 23

2.3 Shear 25

2.4 Torsion and Rolling Shear 26

2.5 Buckling 27

2.5.1 Lateral Flexural Buckling: k c Method 29

2.5.2 Lateral Torsional Buckling: k m Method 32

2.5.3 Torsional Flexural Buckling 38

2.5.4 Calculation According to the Second-Order Theory 39

2.6 Tension and Bending 40

2.7 Serviceability Limit State 41

2.7.1 Deformations 41

2.7.2 Vibrations 43

References 44

Standards and Technical Building Regulations 44

3 Stresses Perpendicular to the Grain 45

3.1 Introduction 45

3.2 Compression 45

3.2.1 Compression Perpendicular to the Grain 45

3.2.2 Compression Stresses at an Angle to the Grain 48

3.3 Tension Perpendicular to Grain 51

3.3.1 Overview 51

3.3.2 Notches 52

3.3.3 Tension-Loaded Connections Perpendicular to the Grain 54

3.3.4 Holes in Glulam Beams 57

Reference 59

4 Dowel-type Connections 61

4.1 Introduction 61

4.2 Connections with Dowel-type Fasteners 62

4.2.1 Overview 62

4.2.2 Deformation Behaviour 62

4.2.3 Basics of the Calculation of Shear-Loaded Connections 65

4.2.4 Shear-Loaded Timber-Timber Connections 68

4.2.5 Shear-Loaded Timber-Timber Connections: Simplified Calculation 71

4.2.6 Shear-Loaded Steel-Timber Connections 71

4.2.7 Shear-Loaded Steel-Timber Connections: Simplified Calculation 74

4.3 Dowels and Bolts 75

4.4 Nails and Staples 77

4.4.1 Overview 77

4.4.2 Construction Rules for Connections with Nails 81

4.4.3 Construction Rules for Staples 84

4.4.4 Load-Bearing Capacity 86

4.5 Connections with Screws 89

4.5.1 Overview 89

4.5.2 Conceptual Design of Connections with Screws 90

4.5.3 Load-Bearing Capacity 93

4.5.4 Application Examples and Execution 96

4.6 Block Shear 97

4.7 Reinforcement of Dowelled Connections 99

4.8 Connections with Cross-laminated Timber (CLT) 101

References 104

Standards and Technical Building Regulations 105

5 Other types of connections 107

5.1 Shear Connectors 107

5.1.1 Mechanism 107

5.1.2 Connector Types and Construction Rules 107

5.1.3 Load-Bearing Capacity 112

5.2 Carpentry Connections 116

5.2.1 Overview 116

5.2.2 Halving Joints 121

5.2.3 Step Joints 124

5.2.4 Mortise and Tenon 127

5.2.5 Deformations: Slip Moduli 130

5.3 Hinged and Moment-Resistant Connections 131

5.3.1 Structural Detailing and Calculation Modelli...

Biographie:

List of Fact Sheets xi

Preface xiii

About the Author xv

Symbols and Abbreviations xvii

1 Timber as a Structural Material 1

1.1 Building with Timber: Advantages and Challenges 1

1.2 Mechanical Properties of Solid Timber 2

1.2.1 Influence of the Fibre Direction 3

1.2.2 Strength Values of Solid Timber 3

1.2.3 Deformation Properties of Solid Timber 5

1.2.4 Influence of Load Duration and Humidity 8

1.3 Wood-based Products 10

1.3.1 Solid Structural Timber and Glued Solid Timber 10

1.3.2 Glued Laminated Timber 11

1.3.3 Cross-laminated Timber 13

1.4 Wood-based Materials 14

1.4.1 Laminated Veneer Lumber 14

1.4.2 Plywood 14

1.4.3 Oriented Strand Boards 15

1.4.4 Particle Boards 15

1.4.5 Fibreboards 16

References 17

Standards and Technical Building Regulations 17

2 Structural Design of Beam-type Members 19

2.1 Basics of Structural Design 19

2.1.1 Action Combinations 21

2.1.2 Modification Factors and Deformation Factors 22

2.2 Bending 23

2.3 Shear 25

2.4 Torsion and Rolling Shear 26

2.5 Buckling 27

2.5.1 Lateral Flexural Buckling: k c Method 29

2.5.2 Lateral Torsional Buckling: k m Method 32

2.5.3 Torsional Flexural Buckling 38

2.5.4 Calculation According to the Second-Order Theory 39

2.6 Tension and Bending 40

2.7 Serviceability Limit State 41

2.7.1 Deformations 41

2.7.2 Vibrations 43

References 44

Standards and Technical Building Regulations 44

3 Stresses Perpendicular to the Grain 45

3.1 Introduction 45

3.2 Compression 45

3.2.1 Compression Perpendicular to the Grain 45

3.2.2 Compression Stresses at an Angle to the Grain 48

3.3 Tension Perpendicular to Grain 51

3.3.1 Overview 51

3.3.2 Notches 52

3.3.3 Tension-Loaded Connections Perpendicular to the Grain 54

3.3.4 Holes in Glulam Beams 57

Reference 59

4 Dowel-type Connections 61

4.1 Introduction 61

4.2 Connections with Dowel-type Fasteners 62

4.2.1 Overview 62

4.2.2 Deformation Behaviour 62

4.2.3 Basics of the Calculation of Shear-Loaded Connections 65

4.2.4 Shear-Loaded Timber-Timber Connections 68

4.2.5 Shear-Loaded Timber-Timber Connections: Simplified Calculation 71

4.2.6 Shear-Loaded Steel-Timber Connections 71

4.2.7 Shear-Loaded Steel-Timber Connections: Simplified Calculation 74

4.3 Dowels and Bolts 75

4.4 Nails and Staples 77

4.4.1 Overview 77

4.4.2 Construction Rules for Connections with Nails 81

4.4.3 Construction Rules for Staples 84

4.4.4 Load-Bearing Capacity 86

4.5 Connections with Screws 89

4.5.1 Overview 89

4.5.2 Conceptual Design of Connections with Screws 90

4.5.3 Load-Bearing Capacity 93

4.5.4 Application Examples and Execution 96

4.6 Block Shear 97

4.7 Reinforcement of Dowelled Connections 99

4.8 Connections with Cross-laminated Timber (CLT) 101

References 104

Standards and Technical Building Regulations 105

5 Other types of connections 107

5.1 Shear Connectors 107

5.1.1 Mechanism 107

5.1.2 Connector Types and Construction Rules 107

5.1.3 Load-Bearing Capacity 112

5.2 Carpentry Connections 116

5.2.1 Overview 116

5.2.2 Halving Joints 121

5.2.3 Step Joints 124

5.2.4 Mortise and Tenon 127

5.2.5 Deformations: Slip Moduli 130

5.3 Hinged and Moment-Resistant Connections 131

5.3.1 Structural Detailing and Calculation Modelli...

Sommaire:
Der Holzbau ist seit einigen Jahren einer der innovativsten Bereiche des Bauwesens. Die Geschwindigkeit, mit der neue Produkte in die Praxis eingef?hrt werden, ist im Vergleich zu anderen Baustoffen fast atemberaubend. So gewinnt der Holzbau im Gewerbe- und Hallenbau, aber auch im mehrgeschossigen Wohn- und B?robau kontinuierlich an Marktanteil.
Dieses Buch vermittelt wesentliche Kenntnisse und Fertigkeiten, die f?r den Entwurf, die Bemessung und die Konstruktion von Holzkonstruktionen f?r typische Bauwerke erforderlich sind. Besonderes Augenmerk wird auf die spezifischen Eigenschaften von Holz und Holzwerkstoffen im Vergleich zu anderen Baustoffen gelegt. Dies betrifft die zahlreichen Vorteile, wie z. B. das vergleichsweise geringe Gewicht, die gute Verarbeitbarkeit des Hochleistungswerkstoffs und die gro?e Vielfalt an Montagetechniken, aber auch die Herausforderungen, die sich aus der Materialanisotropie und aus der Anf?lligkeit f?r nat?rliche Sch?dlinge ergeben.
In jedem Kapitel werden zun?chst die wesentlichen Ph?nomene erl?utert und erst danach in Zusammenhang mit Regelwerken gebracht. Damit soll das Grundverst?ndnis f?r die Zusammenh?nge und Abh?ngigkeiten im Holzbau unterst?tzt werden, das die wesentliche Grundlage f?r kreative Ingenieurarbeit ist.
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