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 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
• Corporate Publisher:
  Iowa State University. Institute for Transportation
• Abstract:
  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.
  More +
• 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