SEISMIC ANALYSIS AND DESIGN USING THE ENDURANCE TIME METHOD

Description

Cover Half Title Series Information Title Page Copyright Page Table of Contents Foreword Preface Biographies 1 Introduction to the Endurance Time Method 1.1 Introduction 1.2 The Endurance Time Concept 1.3 Endurance Time Excitation Functions 1.3.1 Generation of Intensifying Accelerograms 1.4 Analysis Method 1.5 Endurance Criteria 1.6 Application of Intensifying Excitation to Linear SDOF Systems 1.7 Application to MDOF Systems 1.8 Summary and Conclusions Note References 2 Properties of the Endurance Time Excitation Functions 2.1 Introduction 2.2 Second Generation of ET Acceleration Functions 2.3 Comparison of ET Response Spectrum With a Real Earthquake 2.4 Basic Ground-Motion Properties 2.5 Frequency Content 2.6 Power Spectral Density 2.7 Other Ground-Motion Parameters 2.7.1 Energy Parameters 2.8 Intensity Parameters 2.9 Period Parameters 2.10 Peak Velocity Acceleration Ratio 2.11 Cumulative Absolute Velocity 2.12 Sustained Maximum Acceleration (SMA) and Velocity (SMV) 2.13 Effective Design Acceleration (EDA) 2.14 Summary and Conclusions Note References 3 Duration Properties of the Endurance Time Excitation Functions 3.1 Introduction 3.2 Ground Motion Selection 3.3 ET Excitation Functions 3.4 A Review of Definitions of Strong-Motion Duration 3.5 Comparison Between ET Accelerograms and Real Ground Motions 3.6 Evaluation of Proposed Target Time 3.7 Summary and Conclusions Note References 4 Generating ET Excitation Functions By Numerical Optimization 4.1 Introduction 4.2 Generating ET Acceleration Functions 4.3 Nonlinear Least Squares Formulation 4.4 Improved ET Acceleration Functions 4.5 Optimization of Long Duration ET Acceleration Functions 4.6 Comparison of ETEFs in the Analysis of SDOF Systems 4.7 Summary and Conclusions 4.8 Nomenclature Note References 5 Correlating Analysis Time With Intensity Indicators 5.1 Introduction 5.2 Endurance Time Method 5.3 Multiple Intensity Levels in the Performance-Based Design 5.4 Correlation Between Time in ET Analysis and Return Period 5.5 Explanatory Case Study 5.6 Summary and Conclusions 5.7 Nomenclature Note References 6 ET Analysis of Framed Structures 6.1 Introduction 6.2 Procedure for Application of the ET Method 6.3 Specifications of Models, Ground Motions, and Acceleration Functions 6.4 Comparison With Nonlinear Response History Analysis 6.5 Application of the ET Method in Seismic Rehabilitation of Buildings 6.6 Summary and Conclusions Note References 7 Multicomponent Endurance Time Analysis 7.1 Introduction 7.2 Review of Code Provisions and Related Research 7.3 Adaptation of the Endurance Time Method 7.3.1 The Basic Concepts From the ET Method 7.4 Characteristics of ET Acceleration Functions Used in This Study 7.5 Comparison of ET Method With Conventional Approaches 7.6 Structural Models 7.7 Selection of Reference Ground Motions 7.8 Multicomponent Analysis 7.8.1 Scaling Procedure 7.8.2 Multicomponent Analysis By the ET Method 7.9 Summary and Conclusions 7.10 Nomenclature Note References 8 Performance-Based Design With the Endurance Time Method 8.1 Introduction 8.2 Concepts From the Endurance Time Method 8.3 Performance Levels 8.4 Target and Performance Curves 8.5 Definition and Application of Damage Levels 8.6 Structural Model Frames Design 8.7 Presentation of the Analysis Results 8.8 Summary and Conclusions 8.9 Nomenclature Note References 9 Value-Based Seismic Design With ET 9.1 Introduction 9.2 Background 9.3 Application of the Endurance Time Method 9.4 Prescriptive Seismic Design 9.5 Performance-Based Design 9.6 Value-Based Design 9.6.1 Initial Costs 9.6.2 Life-Cycle Cost 9.7 Comparative Study 9.8 Summary and Conclusions 9.9 Nomenclature Note References 10 Seismic Resilient Design By ET 10.1 Introduction 10.2 Earthquakes and Resiliency 10.3 Concepts of Endurance Time Method 10.4 Value-Based Seismic Design By the ET Method 10.5 Case Study: Three-Story Steel Moment Frame 10.6 Quantification of Resilience 10.7 Summary and Conclusions Note References 11 Sample Engineering Application: EDR Seismic Performance 11.1 Introduction 11.2 Basic Concepts From the Endurance Time Method 11.3 Modeling the EDR Device in OpenSees 11.4 Performance Assessment of EDR Devices By ET Method 11.5 Comparative Study 11.6 Summary and Conclusions Note References Index