Assessment of the effects of regional channel stability and sediment transport on roadway hydraulic structures : final report.

Liu, Xiaofeng; Ashraf, Fahmidah; Strom, Kyle B.; Wang, Keh-Han; Jean-Louis Briaud,; Sharif, Hatim; Bin-Shafique, Sazzad; University of Texas at San Antonio. Dept. of Civil and Environmental Engineering

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Assessment of the effects of regional channel stability and sediment transport on roadway hydraulic structures : final report.

2014-06-01
By Liu, Xiaofeng ; Ashraf, Fahmidah ; Strom, Kyle B. ; ...

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English

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Creators:

Liu, Xiaofeng ; Ashraf, Fahmidah ; Strom, Kyle B. ; Wang, Keh-Han ; Jean-Louis Briaud, ; ... More +

Liu, Xiaofeng ; Ashraf, Fahmidah ; Strom, Kyle B. ; Wang, Keh-Han ; Jean-Louis Briaud, ; Sharif, Hatim ; Bin-Shafique, Sazzad Less -
Corporate Creators:

University of Texas at San Antonio. Dept. of Civil and Environmental Engineering
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:

[+]

Channels (Waterways) Channel Stabilization Computer Models Field Studies Geographic Information Systems Geomorphology Hydraulic Structures Rivers Scour
Publication/ Report Number:

FHWA/TX-13/0-6724-1
Resource Type:

Tech Report
Geographical Coverage:

Texas
Corporate Publisher:

Texas. Dept. of Transportation. Research and Technology Implementation Office
Abstract:

Rivers and streams evolve all the time. As a result, no stream channel is absolutely stable. Channels evolve at various speeds both vertically (degradation/aggradation) and horizontally (meander

migration). They also respond to man-made changes ranging from in-stream modiﬁcations (such

as bridges) to watershed changes (such as land use change and urbanization). Failure to consider

these dynamics could result in costly repairs and even disastrous collapse. The current practice

of using HEC-RAS in TxDOT to calculate local scour around hydraulic structures does not fully

consider the eﬀects of regional channel stabilities. The lengthy Federal Highway Administration

(FHWA) publications on steam instabilities (e.g., HEC-11, 18, 20, and 23 series) are not consulted

unless risks are apparent. In addition, there are no clear guidelines on how to address the problem

in the current TxDOT Hydraulic Design Manual. A comprehensive investigation of the subject

and synthetic study are needed. This ﬁnal report is the compilation of all the interim technical

memorandums submitted to TxDOT during the course of this project.
Format:

PDF
Funding:

Project 0-6724
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:e9af00d58d4f5ffed8dafaf7a2c62f47137eb8ff812a1772f9c983ecd52f9a6c
Download URL:

https://rosap.ntl.bts.gov/view/dot/27748/dot_27748_DS1.pdf
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Assessment of the effects of regional channel stability and sediment transport on roadway hydraulic structures : final report.

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