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:
  • Seismic prospecting
  • Landslides
  • Earthquakes
  • Hazard analysis
  • Mapping
  • Probability
  • Highway corridors
  • Lifelines
  • Risk assessment
• 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
  More +
• Format:
  PDF
• Funding:
  SPR 740
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/28643/dot_28643_DS1.pdf
• File Type:
  [PDF - 11.88 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:7105d995cb0e357e7ecdb04fb029da869c9625bf8e5db6a1548e4509a3c0efe8a57724e863639b880df6e3552fb8efb4c5929a817221845968315ef516971bb7