Estimating Foundation Scour for Extreme Hydrologic Events at Scour Critical Bridges

Sturm, Terry W.; Stoesser, Thorsten; Hong, Seungho; Sibel, Kara; Wang, Yung-Chieh (Becky)

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Estimating Foundation Scour for Extreme Hydrologic Events at Scour Critical Bridges

2016-02-01
By Sturm, Terry W. ; Stoesser, Thorsten ; Hong, Seungho

File Language:

English

Details

Creators:

Sturm, Terry W. ; Stoesser, Thorsten ; Hong, Seungho ; Sibel, Kara ; Wang, Yung-Chieh (Becky)
Corporate Creators:

Georgia Institute of Technology. School of Civil and Environmental Engineering ; Georgia. Dept. of Transportation. Office of Research
Corporate Contributors:

United States. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

09-08 ; FHWA-GARPXX
Resource Type:

Tech Report
Geographical Coverage:

United States ; Georgia
TRIS Online Accession Number:

01592076
Edition:

Final Report
Corporate Publisher:

Georgia Institute of Technology. School of Civil and Environmental Engineering
Abstract:

During extreme hydrologic events, bridges may be subjected to submerged orifice flow and overtopping because they were not designed for such large flows. As a result, such bridges are vulnerable to excessive scour of the foundations and possible failure. The objective of this research is to examine both the hydrodynamics of the flow and the scour resistance of fine sediments to improve prediction of scour depths under extreme flooding conditions. The research approach is three-pronged: (1) experimental measurement of the scour depths and flow field in a large compound channel flume; (2) application of computational fluid dynamics to predict the turbulence properties of the flow field; and (3) testing of laboratory mixtures of fine sediments to develop a relationship for critical shear stress at the threshold of scour. Results of these three tasks are combined to form a procedure for scour prediction that considers both the causative and resistive factors in the complex process of bridge scour.
Format:

PDF
Download URL:

https://rosap.ntl.bts.gov/view/dot/39547/dot_39547_DS1.pdf
File Type:

[PDF - 3.09 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:96570945ef232777e111c319f1c7bb62cf095982f5bed1fab0031243f8b7491f

File Language:

English

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