Alternate Methods of Stabilizing Degrading Stream Channels in Western Iowa

Details

• Creators:
  Lohnes, R. A. ; Klaiber, F. W. ; Dougal, M. D.
• Corporate Creators:
  Iowa State University. Engineering Research Institute
• Corporate Contributors:
  Iowa Highway Research Board ; Iowa. Department of Transportation
• Subject/TRT Terms:
  Bridges And Culverts Hydrological Degradation Pile Caps Portland Cement Concrete Preservation Reinforced Concrete Bridges Stream Channels Structural Analysis
• Publication/ Report Number:
  1421 ; Iowa DOT HR-208
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States ; Iowa
• Edition:
  Final Report on Phase I
• Corporate Publisher:
  Iowa Department of Transportation
• Abstract:
  The long-range objective of this research is to develop effective and economical methods of stabilizing the degrading stream channels of western Iowa. The study is divided into two phases. The results of the first phase are the subject of this report. The specific objectives of Phase I are to inventory existing grade stabilization structures and to evaluate their performance relative to the geologic and hydrologic environment and to their structural design. These analyses should point to possible design weaknesses and potential remedial actions that may be taken on existing structures. Also, the analyses should provide insights that will lead to innovative designs. The grade stabilization structure which is analyzed in some detail is the flume bridge, sometimes called the Greenwood Flume. One innovation given a preliminary evaluation in Phase I is the substitution of soil-cement for portland cement concrete elements in grade stabilization structures. Finally, some tentative recommendations will be made to provide a method for predicting the rate and maximum depth of degradation at a given position on a stream. Phase II will involve the design, construction and evaluation of demonstration grade stabilization structures.
• Format:
  PDF
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:8e168279e770176656f4f2abb268613df5fbd5d6ad2e80faa520a7abd851d7af8c96c87e25a6ef6d30bc7badf467b3ca3ed137e6ffcc934bfcc83435f7011e53
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/91915/dot_91915_DS1.pdf
• File Type:
  [PDF - 3.48 MB ]