Seismic Analysis of Structures

473 Pages·2010·6.81 MB·English

by  T. K. Datta

SEISMIC ANALYSIS
OF STRUCTURES
T. K. Datta
Indian Instituteof TechnologyDelhi,India

SEISMIC ANALYSIS
OF STRUCTURES

SEISMIC ANALYSIS
OF STRUCTURES
T. K. Datta
Indian Instituteof TechnologyDelhi,India
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Datta,T.K.(TusharKanti),1944-
Seismicanalysisofstructures/T.K.Datta.
p.cm.
Includesindex.
ISBN978-0-470-82461-0(cloth)
1. Earthquakeengineering.2. Structuralanalysis. I.Title.
TA654.6.D3782010
624.10762–dc22
2009044760
ISBN978-0-470-82461-0(HB)
Typesetin9/11ptTimesbyThomsonDigital,Noida,India.
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Contents
Preface xiii
1 Seismology 1
1.1 Introduction 1
1.1.1 EarthanditsInteriors 1
1.1.2 PlateTectonics 2
1.1.3 CausesofEarthquakes 5
1.2 SeismicWaves 7
1.3 EarthquakeMeasurementParameters 11
1.3.1 LocalMagnitude(ML) 13
1.3.2 BodyWaveMagnitude(Mb) 14
1.3.3 SurfaceWaveMagnitude(MS) 14
1.3.4 SeismicMomentMagnitude(MW) 15
1.3.5 EnergyRelease 16
1.3.6 Intensity 16
1.4 MeasurementofanEarthquake 18
1.5 ModificationofEarthquakesDuetotheNatureoftheSoil 21
1.6 SeismicHazardAnalysis 22
1.6.1 DeterministicHazardAnalysis 22
1.6.2 ProbabilisticHazardAnalysis 24
1.6.3 SeismicRiskataSite 30
1.6.4 ConceptofMicrozonationBasedonHazardAnalysis 32
ExerciseProblems 33
References 38
2 SeismicInputsfor Structures 41
2.1 Introduction 41
2.2 TimeHistoryRecords 41
2.3 FrequencyContentsofGroundMotion 42
2.4 PowerSpectralDensityFunctionofGroundMotion 49
2.5 ResponseSpectrumofEarthquake 54
2.5.1 Displacement,Velocity,andAccelerationSpectra 54
2.5.2 EnergySpectrumandFourierSpectrum 56
2.5.3 CombinedD-V-ASpectrum 58
2.5.4 DesignResponseSpectrumanditsConstruction 61
2.5.5 DesignEarthquakes 65