1 Introduction 1.1 Background 1.1.1 Landslide 1.1.2 Earthquake-Induced Landslides 1.2 Preventive Countermeasures and Two Major Issues 1.3 Scope and Objectives 1.4 Monograph Organization References 2 Review of Studies on Earthquake-Induced Landslides 2.1 Introduction 2.2 Seismic Slope Stability Analysis 2.2.1 Pseudo-Static Methods 2.2.2 Dynamic Sliding Block Methods 2.2.3 Stress-Strain Methods 2.3 Landslide Run-Out Analysis 2.3.1 Experiment Methods 2.3.2 Empirical Methods 2.3.3 Analytical Methods 2.3.4 Numerical Simulation Methods 2.4 Comparisons of Various Methods and Conclusions References 3 Seismic Slope Stability Analysis by Considering Tension Crack 3.1 Introduction 3.2 Numerical Simulation Method 3.2.1 Failure Mechanism in the FLAC3D 3.2.2 Dynamic Formulation 3.2.3 Results 3.2.4 Discussions 3.3 Comparison of Limit Analysis and Numerical Simulation 3.3.1 Comparison of the Depth of Tension Failure 3.3.2 Comparison of FOS 3.3.3 Comparison of the Shape of Slip Surface 3.4 Conclusions References 4 Run-Out Analysis of Earthquake-Induced Landslides 4.1 Introduction 4.2 Trampoline Effect Induced by Extreme Seismic Loadings 4.2.1 Extreme Seismic Loading 4.2.2 Trampoline Effect 4.2.3 Verification of Trampoline Effect Using DDA 4.3 Existing Long Run-Out Models 4.3.1 Fluidizations 4.3.2 Air Cushion 4.3.3 Liquefaction 4.4 Multiplex Acceleration Model (MAM) and Extension 4.4.1 Single Sliding Model 4.4.2 Multi-movement Model References 5 Extension of Discontinuous Deformation Analysis and Application in Run-Out Analysis of Earthquake-Induced Landslides 5.1 Introduction 5.2 Theory of DDA 5.2.1 Basic Theory and Time Discretization 5.2.2 Contact Mechanism 5.3 Validation of Static Sliding 5.3.1 Limitation of the Original DDA 5.3.2 Extension of the Original DDA by Importing Edge-to- Edge Contact 5.3.3 Validation of Static Sliding Block 5.3.4 Remarks 5.4 Validation of Dynamic Block Model 5.4.1 Effects of Model Types on the Residual Displacement. 5.4.2 Effects of Vertical Seismic Force on the Residual Displacement 5.4.3 Effects of Model Strike Direction on the Residual Displacement 5.4.4 Remarks 5.5 Validation of Trampoline Effects 5.6 Simulation of the Donghekou Landslide by Using the Developed DDA Program 5.6.1 DDA Model, Parameters, and Seismic Loadings. 5.6.2 Results of DDA Simulation 5.7 Conclusions References 6 A Case Study of Earthquake-Induced Landslide 6.1 Introduction 6.2 Background Information 6.2.1 The Wenchuan Earthquake 6.2.2 The Daguangbao Landslide 6.3 Material Properties and Ground Motion 6.3.1 Material Properties 6.3.2 Ground Motion 6.4 Stability Analysis by the FLAC3D 6.4.1 The Finite Difference Method 6.4.2 FOS and Strength Reduction Technique 6.4.3 Numerical Simulations 6.4.4 Results and Discussions of the Stability Analysis 6.5 Run-Out Analysis by the Extended DDA 6.5.1 The Seismic DDA Code and Basic Assumptions 6.5.2 Geometry and Properties of Sliding Blocks 6.5.3 Earthquake Forces 6.5.4 Results and Discussions of the Run-out Analysis 6.6 Conclusions References 7 Conclusions and Future Studies 7.1 Conclusions 7.2 Future Studies Appendix A Appendix B Bibliography
