Book contents
- Landslides
- Landslides
- Copyright page
- Contents
- Contributors
- Preface
- 1 Landslide hazard and risk
- 2 Landslides in the Earth system
- 3 Earthquake ground motion and patterns of seismically induced landsliding
- 4 Landslides at stratovolcanoes initiated by volcanic unrest
- 5 Mobility of long-runout rock avalanches
- 6 Rapid rock-slope failures
- 7 Risk assessments for debris flows
- 8 Landslides in quick clay
- 9 Controls on the distribution of major types of submarine landslides
- 10 Tsunami hazard assessment related to slope failures in coastal waters
- 11 Physical impacts of climate change on landslide occurrence and related adaptation
- 12 Landslides and geologic environments
- 13 Numerical modeling of rock-slope instability
- 14 Remote sensing techniques and landslides
- 15 Engineering geomorphology of landslides
- 16 Developments in landslide runout prediction
- 17 Models of the triggering of landslides during earthquakes
- 18 Slow rock-slope deformation
- 19 Landslide monitoring:
- 20 Groundwater in slopes
- 21 Soil slope stabilization
- 22 Rockfall characterization and modeling
- 23 The 2006 Eiger rockslide, European Alps
- 24 Randa:
- 25 Characterization and management of rockslide hazard at Turtle Mountain, Alberta, Canada
- 26 The Åknes rockslide, Norway
- 27 A seismometric approach for back-analyzing an unusual rockfall in the Apennines of Italy
- 28 Downie Slide, British Columbia, Canada
- 29 The 1963 Vaiont landslide, Italy
- 30 Hong Kong landslides
- 31 Landslides induced by the Wenchuan earthquake
- 32 Landslides on other planets
- Index
17 - Models of the triggering of landslides during earthquakes
Published online by Cambridge University Press: 05 May 2013
- Landslides
- Landslides
- Copyright page
- Contents
- Contributors
- Preface
- 1 Landslide hazard and risk
- 2 Landslides in the Earth system
- 3 Earthquake ground motion and patterns of seismically induced landsliding
- 4 Landslides at stratovolcanoes initiated by volcanic unrest
- 5 Mobility of long-runout rock avalanches
- 6 Rapid rock-slope failures
- 7 Risk assessments for debris flows
- 8 Landslides in quick clay
- 9 Controls on the distribution of major types of submarine landslides
- 10 Tsunami hazard assessment related to slope failures in coastal waters
- 11 Physical impacts of climate change on landslide occurrence and related adaptation
- 12 Landslides and geologic environments
- 13 Numerical modeling of rock-slope instability
- 14 Remote sensing techniques and landslides
- 15 Engineering geomorphology of landslides
- 16 Developments in landslide runout prediction
- 17 Models of the triggering of landslides during earthquakes
- 18 Slow rock-slope deformation
- 19 Landslide monitoring:
- 20 Groundwater in slopes
- 21 Soil slope stabilization
- 22 Rockfall characterization and modeling
- 23 The 2006 Eiger rockslide, European Alps
- 24 Randa:
- 25 Characterization and management of rockslide hazard at Turtle Mountain, Alberta, Canada
- 26 The Åknes rockslide, Norway
- 27 A seismometric approach for back-analyzing an unusual rockfall in the Apennines of Italy
- 28 Downie Slide, British Columbia, Canada
- 29 The 1963 Vaiont landslide, Italy
- 30 Hong Kong landslides
- 31 Landslides induced by the Wenchuan earthquake
- 32 Landslides on other planets
- Index
Summary
Several methods to assess the stability of slopes during earthquakes were developed during the twentieth century. Pseudostatic analysis was the first method; this involves simply adding a permanent body force representing the earthquake shaking to a static limit equilibrium analysis. Stress-deformation analysis, a later development, involves much more complex modeling of slopes. It uses a mesh in which the internal stresses and strains within elements are computed based on the applied external loads, including gravity and seismic loads. Stress-deformation analysis provides the most realistic model of slope behavior, but is very complex and requires a high density of high-quality soil-property data, as well as an accurate model of soil behavior. In 1965, Newmark developed a method that effectively bridges the gap between these two types of analysis. His sliding-block model is easy to apply and provides a useful index of coseismic slope performance. Subsequent modifications to sliding-block analysis have made it applicable to a wider range of landslide types. It is far easier to apply than stress-deformation analysis and yields much more useful information than pseudostatic analysis.
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- LandslidesTypes, Mechanisms and Modeling, pp. 196 - 206Publisher: Cambridge University PressPrint publication year: 2012
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