Pier scour in clear-water conditions with non-uniform bed materials

Guo, Junke; Suaznabar, Oscar; Shan, Haoyin; Shen, Jerry

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Pier scour in clear-water conditions with non-uniform bed materials

2012-05-01
By Guo, Junke ; Suaznabar, Oscar ; Shan, Haoyin

File Language:

English

Details

Creators:

Guo, Junke ; Suaznabar, Oscar ; Shan, Haoyin ; Shen, Jerry
Corporate Creators:

Genex Systems, LLC ; University of Nebraska--Lincoln. Dept. of Civil Engineering
Corporate Contributors:

United States. Department of Transportation. Federal Highway Administration. Office of Infrastructure Research and Development
Subject/TRT Terms:
Publication/ Report Number:

FHWA-HRT-12-022
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Laboratory report; Nov. 2009-May 2012.
Contracting Officer:

Kerenyi, Kornel
Corporate Publisher:

Turner-Fairbank Highway Research Center
Abstract:

Pier scour design in the United States is currently accomplished through application of the Colorado State University ; (CSU) equation. Since the Federal Highway Administration recommended the CSU equation in 2001, substantial ; advances have been made in the understanding of pier scour processes. This report explains a new formulation for ; describing scour processes and proposes a new equation for pier scour design. A critical review of selected studies is ; summarized. A simplified scour mechanism is proposed in terms of a pressure gradient resulting from the flowstructure, ; flow-sediment, and sediment-structure interactions. An equilibrium scour depth equation is proposed ; based on this understanding of the scour mechanism and is validated and refined by a combination of laboratory ; and field data. The proposed equation is primarily applicable to clear-water scour conditions with non-uniform coarse ; bed materials.
Format:

PDF
Funding:

DTFH61-11-D-00010
Download URL:

https://rosap.ntl.bts.gov/view/dot/24982/dot_24982_DS1.pdf
File Type:

[PDF - 2.38 MB]
Collection(s):

Federal Highway Administration ; US Transportation Collection
Main Document Checksum:

urn:sha-512:fbfe9336072232c0e40034aa5aec0c027347d94b986cd3f75a0cb8883992e95f5908419f13a1f399dc93f41c9ce14ba111a6ac2edab545b24b3865eaf58f35c9

File Language:

English

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