Impacts of potential seismic landslides on lifeline corridors.

Details

• Creators:
  Olsen, Michael J. ; Ashford, Scott A. ; Mahlingam, Rubini ; Sharifi-Mood, Mahyar ; O¿Banion, Matt ; Gillins, Daniel T.
• Corporate Creators:
  Oregon State University. School of Civil and Construction Engineering
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  Earthquakes Hazard Analysis Highway Corridors Landslides Lifelines Mapping Probability Risk Assessment Seismic Prospecting
• Publication/ Report Number:
  FHWA-OR-RD-15-06
• Resource Type:
  Tech Report
• Geographical Coverage:
  Oregon
• Corporate Publisher:
  Oregon. Dept. of Transportation. Research Section
• Abstract:
  This report presents a fully probabilistic method for regional seismically induced landslide hazard analysis and
  
  mapping. The method considers the most current predictions for strong ground motions and seismic sources
  
  through use of the U.S.G.S. seismic hazard curves in conjunction with topographic, geologic, and other
  
  geospatial information. Probabilistic landslide triggering analysis is performed based on Newmark’s sliding
  
  block theory. Because strength parameters are difficult to obtain in detail for a large regional area, friction
  
  angles for each lithological unit are estimated from histograms of the terrain slope at locations of previously
  
  mapped landslides within the unit. Afterwards, empirical models are used to predict the probability of a
  
  landslide triggering and the probability of horizontal displacement from a landslide exceeding specific thresholds
  
  (i.e., 0.1, 0.3, 1.0 m) relevant to engineering and planning purposes.
  
  The probabilistic landslide-triggering map is evaluated by comparing its predictions with previously mapped
  
  landslides from the Statewide Landslide Inventory Database of Oregon (SLIDO). Over 99.8% of the landslides
  
  in SLIDO are located in areas mapped with very high probability (i.e., 80-100%) of a landslide triggering.
  
  The created landslide hazard maps are suitable for regional resilience and planning studies by various agencies,
  
  as well as integration with maps of other types of hazards for probabilistic-based multi-hazard calculations and
  
  risk assessment. The maps should not be used in place of site-specific analyses, but may be used to prioritize
  
  where site-specific analyses and new geotechnical investigations are most needed. Finally, the maps can be used
  
  to identify which sections of the highway corridors would be likely be least affected by landslides, enabling it to
  
  serve as a lifeline route
  
  
• Format:
  PDF
• Funding:
  SPR 740
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:7105d995cb0e357e7ecdb04fb029da869c9625bf8e5db6a1548e4509a3c0efe8a57724e863639b880df6e3552fb8efb4c5929a817221845968315ef516971bb7
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28643/dot_28643_DS1.pdf
• File Type:
  [PDF - 11.88 MB ]