Geo-infrastructure damage assessment, repair and mitigation strategies.

Details

• Creators:
  Vennapusa, Pavana ; White, David ; Miller, Kelly
• Corporate Creators:
  Iowa State University. Earthworks Engineering Research Center
• Corporate Publisher:
  Iowa State University. Institute for Transportation
• Corporate Contributors:
  Iowa. Highway Research Board ; United States. Federal Highway Administration ; Iowa. Dept. of Transportation
• Subject/TRT Terms:
  • Floods
  • Flood damage
  • Falling weight deflectometers
  • Gravel roads
  • Ground penetrating radar
  • Field tests
  • Soil stabilization
  • Bridge abutments
  • Culverts
  • Structural analysis
• Publication/ Report Number:
  IHRB Project TR-638 ; InTrans Project 11-419
• Resource Type:
  Tech Report
• Geographical Coverage:
  Iowa
• Description:
  The 2011 Missouri River flooding caused significant damage to many geo-infrastructure systems including levees, bridge
  
  abutments/foundations, paved and unpaved roadways, culverts, and embankment slopes in western Iowa. The flooding resulted in
  
  closures of several interchanges along Interstate 29 and of more than 100 miles of secondary roads in western Iowa, causing severe
  
  inconvenience to residents and losses to local businesses. The main goals of this research project were to assist county and city
  
  engineers by deploying and using advanced technologies to rapidly assess the damage to geo-infrastructure and develop effective
  
  repair and mitigation strategies and solutions for use during future flood events in Iowa.
  
  The research team visited selected sites in western Iowa to conduct field reconnaissance, in situ testing on bridge abutment
  
  backfills that were affected by floods, flooded and non-flooded secondary roadways, and culverts. In situ testing was conducted
  
  shortly after the flood waters receded, and several months after flooding to evaluate recovery and performance. Tests included
  
  falling weight deflectometer, dynamic cone penetrometer, three-dimensional (3D) laser scanning, ground penetrating radar, and
  
  hand auger soil sampling.
  
  Field results indicated significant differences in roadway support characteristics between flooded and non-flooded areas. Support
  
  characteristics in some flooded areas recovered over time, while others did not. Voids were detected in culvert and bridge abutment
  
  backfill materials shortly after flooding and several months after flooding. A catalog of field assessment techniques and 20
  
  potential repair/mitigation solutions are provided in this report. A flow chart relating the damages observed, assessment techniques,
  
  and potential repair/mitigation solutions is provided. These options are discussed for paved/unpaved roads, culverts, and bridge
  
  abutments, and are applicable for both primary and secondary roadways.
• Format:
  PDF
• Funding:
  SPR RB18-012
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/26876/dot_26876_DS1.pdf
• File Type:
  [PDF - 30.85 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:83c78cac376127476afc09d44236e6cdf768596b0a7a590e62bb30016e9cb96e