TR-596 insights into the origin and characteristics of the sedimentation process at multi-barrel culverts in Iowa.

Details

• Alternative Title:
  Insights into the design and characteristics of the sedimentation process at multi-barrel culverts in Iowa
• Creators:
  Muste, Marian ; Ho, Hao-Che ; Mehl, Daniel
• Corporate Creators:
  Iowa Institute of Hydraulic Research
• Corporate Contributors:
  Iowa. Dept. of Transportation ; Iowa. Highway Research Board
• Subject/TRT Terms:
  • Culverts
  • Box culverts
  • Sedimentation Culverts--Iowa--Design and construction
  • Sedimentation and disposition--Iowa
• Publication/ Report Number:
  IHRB Project TR-596
• Resource Type:
  Tech Report
• Geographical Coverage:
  Iowa
• Edition:
  Final report.
• Corporate Publisher:
  University of Iowa. IIHR Hydroscience and Engineering
• Abstract:
  The present study is an integral part of a broader study focused on the design and implementation of self-cleaning culverts, i.e., ; configurations that prevent the formation of sediment deposits after culvert construction or cleaning. Sediment deposition at culverts is ; influenced by many factors, including the size and characteristics of material of which the channel is composed, the hydraulic ; characteristics generated under different hydrology events, the culvert geometry design, channel transition design, and the vegetation ; around the channel. The multitude of combinations produced by this set of variables makes the investigation of practical situations a ; complex undertaking. ; In addition to the considerations above, the field and analytical observations have revealed flow complexities affecting the flow and ; sediment transport through culverts that further increase the dimensions of the investigation. The flow complexities investigated in this ; study entail: flow non-uniformity in the areas of transition to and from the culvert, flow unsteadiness due to the flood wave propagation ; through the channel, and the asynchronous correlation between the flow and sediment hydrographs resulting from storm events. To ; date, the literature contains no systematic studies on sediment transport through multi-box culverts or investigations on the adverse ; effects of sediment deposition at culverts. Moreover, there is limited knowledge about the non-uniform, unsteady sediment transport in ; channels of variable geometry. Furthermore, there are few readily useable (inexpensive and practical) numerical models that can ; reliably simulate flow and sediment transport in such complex situations. ; Given the current state of knowledge, the main goal of the present study is to investigate the above flow complexities in order to provide ; the needed insights for a series of ongoing culvert studies. The research was phased so that field observations were conducted first to ; understand the culvert behavior in Iowa landscape. Modeling through complementary hydraulic model and numerical experiments was ; subsequently carried out to gain the practical knowledge for the development of the self-cleaning culvert designs.
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• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/18064/dot_18064_DS1.pdf
• File Type:
  [PDF - 5.87 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:06310e1c682480fefa5491baac6aaf076f08d9e713b91da8e4cc6ca2214dc05a8b65642120055ee3a242c358baca3e0f3359fcda08ee1d672693b4685f41c154