Assessment of the Effects of Regional Channel Stability and Sediment Transport on Roadway Hydraulic Structures

This report includes a literature review on the subject of degradation and aggradation, bank erosion, channel stability, fluvial geomorphology, river hydraulics, and erosion countermeasures. Researchers also collected and integrated data from all possible sources into a geographic information system (GIS) database which can be used by Texas Department of Transportation (TxDOT) engineers. Then the research team surveyed existing numerical models with the aim of identifying tools to evaluate different design options. The selected tools were tested on six sites in Texas where field observations and measurements were carried out in this project. Sediment samples were taken from both the river bottom and the banks. Samples were processed in the lab for grain size distributions. They were also tested using the Erosion Function Apparatus (EFA) at Texas A&M University (TAMU). The results from these tests were used in the predictive models. The final product is the analysis procedures and design guidelines for structures in unstable streams. The document is written in the format which can readily replace the relevant section in the current TxDOT Hydraulic Design Manual.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 236p

Subject/Index Terms

Filing Info

  • Accession Number: 01535769
  • Record Type: Publication
  • Report/Paper Numbers: FHWA/TX-13/0-6724-1, 0-6724-1
  • Contract Numbers: 0-6724
  • Files: TRIS, ATRI, USDOT, STATEDOT
  • Created Date: Jul 29 2014 11:16AM