Basic Earthquake Engineering: From Seismology to Analysis and Design

✍ Scribed by Halûk Sucuoğlu, Sinan Akkar

• Publisher: Springer
• Year: 2014
• Tongue: English
• Leaves: 297
• Category: Library

✦ Synopsis

This book provides senior undergraduate students, master students and structural engineers who do not have a background in the field with core knowledge of structural earthquake engineering that will be invaluable in their professional lives. The basics of seismotectonics, including the causes, magnitude, and intensity of earthquakes, are first explained. Then the book introduces basic elements of seismic hazard analysis and presents the concept of a seismic hazard map for use in seismic design. Subsequent chapters cover key aspects of the response analysis of simple systems and building struc­tures to earthquake ground motions, design spectrum, the adoption of seismic analysis procedures in seismic design codes, seismic design principles and seismic design of reinforced concrete structures. Helpful worked examples on seismic analysis of linear, nonlinear and base isolated buildings, earthquake-resistant design of frame and frame-shear wall systems are included, most of which can be solved using a hand calculator.

Features:

-Covers the seismic hazard, the basics of seismotectonics, and the fundamentals of earthquake engineering
-Meets the future professional needs of senior undergraduate students by explaining the principles of earthquake-resistant design
-Includes useful sample problems on earthquake-resistant design of frame and frame-shear wall systems

✦ Table of Contents

Preface......Page 5
Acknowledgments......Page 9
Contents......Page 10
1.1…Dynamic Earth Structure......Page 14
1.1.1 Continental Drift......Page 17
1.1.2 Theory of Global Plate Tectonics......Page 19
1.2…Earthquake Process and Faults......Page 27
1.3…Seismic Waves......Page 30
1.4…Magnitude of an Earthquake......Page 34
1.5.1 Instrumental Intensity......Page 37
1.5.2 Observational Intensity......Page 41
1.6.2 Fault Rupture......Page 47
1.6.3 Geotechnical Deformations......Page 49
2.1…Introduction......Page 53
2.2…Seismicity and Earthquake Recurrence Models......Page 54
2.3…Ground-Motion Prediction Equations (Attenuation Relationships)......Page 62
2.4…Probabilistic Seismic Hazard Analysis......Page 65
2.5…Deterministic Seismic Hazard Analysis......Page 73
2.7…Basic Probability Concepts......Page 75
3.1.1 Ideal SDOF Systems: Lumped Mass and Stiffness......Page 86
3.1.2 Idealized SDOF Systems: Distributed Mass and Stiffness......Page 87
3.2…Equation of Motion: Direct Equilibrium......Page 88
3.3…Equation of Motion for Base Excitation......Page 89
3.4.1 Free Vibration Response......Page 90
3.4.1.1 Undamped Free Vibration ( xi = 0)......Page 91
3.4.1.2 Damped Free Vibration (0 lessthan xi lessthan 1)......Page 92
3.4.2.1 General Solution......Page 96
3.4.2.2 Resonance......Page 97
3.4.4 Numerical Evaluation of Dynamic Response......Page 98
3.4.4.1 Constant Average Acceleration......Page 99
3.4.5 Integration Algorithm......Page 102
3.5…Earthquake Response Spectra......Page 104
3.5.1 Pseudo Velocity and Pseudo Acceleration Response Spectrum......Page 106
3.5.1.2 Pseudo Acceleration......Page 107
3.5.2 Practical Implementation of Earthquake Response Spectra......Page 108
3.6.1 Nonlinear Force-Deformation Relations......Page 109
3.6.2 Relationship Between Strength and Ductility in Nonlinear SDOF Systems......Page 111
3.6.4 Numerical Evaluation of Nonlinear Dynamic Response......Page 113
3.6.4.2 Direction Reversal......Page 114
3.6.4.4 Integration Algorithm......Page 115
3.6.5 Ductility and Strength Spectra for Nonlinear SDOF Systems......Page 117
3.6.6 Ductility Reduction Factor (R mu )......Page 119
3.6.7 Equal Displacement Rule......Page 121
4.1…Introduction......Page 128
4.2…Linear Elastic Design Spectrum......Page 129
4.2.1 Elastic Design Spectrum Based on Eurocode 8......Page 130
4.2.2 Elastic Design Spectrum Based on NEHRP Provisions and ASCE 7 Standards......Page 135
4.2.3 Effect of Damping on Linear Elastic Design Spectrum......Page 146
4.2.4 Structure Importance Factor (I)......Page 147
4.3…Reduction of Elastic Forces: Inelastic Design Spectrum......Page 148
4.3.1 Minimum Base Shear Force......Page 152
5.1…Introduction......Page 155
5.2…Equations of Motion Under External Forces......Page 156
5.3…Equations of Motion Under Earthquake Base Excitation......Page 157
5.4…Static Condensation......Page 159
5.5…Undamped Free Vibration: Eigenvalue Analysis......Page 161
5.5.1 Vibration Modes and Frequencies......Page 163
5.5.1.1 Summary......Page 164
5.5.2 Normalization of Modal Vectors......Page 167
5.5.3 Orthogonality of Modal Vectors......Page 168
5.5.4 Modal Expansion of Displacements......Page 169
5.6…Solution of Equation of Motion Under Earthquake Excitation......Page 170
5.6.1 Summary: Modal Superposition Procedure......Page 171
5.6.3 Modal Combination Rules......Page 172
5.6.4 Equivalent Static (Effective) Modal Forces......Page 174
5.7…Limitations of Plane Frame (2D) Idealizations for 3D Frame Systems......Page 193
5.8…Nonlinear Static (Pushover) Analysis......Page 194
5.8.2 Capacity Curve for Inelastic Response......Page 196
5.8.3 Target Displacement Under Design Earthquake......Page 197
5.8.3.1 Summary: Pushover Analysis......Page 198
5.9.1 General Principles of Base Isolation......Page 200
5.9.2 Equivalent Linear Analysis of Base Isolation Systems with Inelastic Response......Page 204
5.9.3 Critical Issues in Base Isolation......Page 206
6.1…Introduction......Page 212
6.2…Rigid Floor Diaphragms and Dynamic Degrees of Freedom in Buildings......Page 213
6.3.1 Mass Matrix......Page 214
6.3.2 Stiffness Matrix......Page 215
6.4…Free Vibration (Eigenvalue) Analysis......Page 219
6.4.1 The Effect of Building Symmetry on Mode Shapes......Page 221
6.5…Analysis Procedures for Buildings in Seismic Codes......Page 224
6.6…Modal Response Spectrum Analysis......Page 225
6.6.1 Summary of Modal Response Spectrum Analysis Procedure......Page 226
6.6.3 Accidental Eccentricity......Page 227
6.7…Equivalent Static Lateral Load Procedure......Page 232
6.7.1 Base Shear Force in Seismic Codes......Page 234
6.7.2 Estimation of the First Mode Period T1......Page 235
6.7.3 Lateral Force Distribution in Seismic Codes......Page 236
6.8…Basic Design Principles and Performance Requirements for Buildings......Page 237
6.9.1 Irregularities in Plan......Page 239
6.9.2 Irregularities in Elevation......Page 240
6.9.3 Selection of the Analysis Procedure......Page 241
6.10.1 Interstory Drift Limitation......Page 242
6.10.2 Second Order Effects......Page 244
6.10.2.2 With Considering P- Delta Effects......Page 245
6.10.3 Building Separations......Page 246
7.1…Introduction......Page 250
7.2…Capacity Design Principles......Page 251
7.3.1 Ductility in Reinforced Concrete Materials......Page 252
7.3.2 Ductility in Reinforced Concrete Members......Page 253
7.4.2 Limitations on Tension Reinforcement......Page 255
7.4.4 Minimum Lateral Reinforcement for Confinement......Page 256
7.4.5 Shear Design of Beams......Page 257
7.5.1 Limitation on Axial Stresses......Page 259
7.5.3 Minimum Lateral Reinforcement for Confinement......Page 260
7.5.4 Strong Column-Weak Beam Principle......Page 262
7.5.5 Shear Design of Columns......Page 263
7.5.6 Short Column Effect......Page 268
7.6.1 Design Shear Force......Page 269
7.7…Comparison of the Detailing Requirements of Modern and Old Seismic Codes......Page 272
7.8…Seismic Design of Ductile Concrete Shear Walls......Page 273
7.8.1 Seismic Design of Slender Shear Walls......Page 274
7.8.1.1 Reinforcement Detailing in Ductile Shear Walls......Page 275
7.8.1.2 Flexural Design of Slender Shear Walls......Page 276
7.8.1.3 Shear Design of Slender Shear Walls......Page 278
7.8.2 Seismic Design of Squat Shear Walls......Page 279
7.9…Capacity Design Procedure: Summary......Page 281
References......Page 292
Index......Page 294

✦ Subjects

Промышленное и гражданское строительство;Технология возведения зданий;