Repair of Skewed Steel Bridges Damaged by Distortion-Induced Fatigue

Bennett, Caroline; Yu, Danqing; Matamoros, Adolfo; Chen, Yaqing; Rolfe, Stan; Mid-America Transportation Center; University of Nebraska--Lincoln; University of Kansas

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Repair of Skewed Steel Bridges Damaged by Distortion-Induced Fatigue

2014-12-01
By Bennett, Caroline ; Yu, Danqing ; Matamoros, Adolfo ; ...

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English

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Details:

Creators:

Bennett, Caroline ; Yu, Danqing ; Matamoros, Adolfo ; Chen, Yaqing ; Rolfe, Stan

Bennett, Caroline ; Yu, Danqing ; Matamoros, Adolfo ; Chen, Yaqing ; Rolfe, Stan Less -
Corporate Creators:

Mid-America Transportation Center ; University of Nebraska--Lincoln ; University of Kansas

Mid-America Transportation Center ; University of Nebraska--Lincoln ; University of Kansas Less -
Corporate Contributors:

United States. Dept. of Transportation. Research and Innovative Technology Administration
Subject/TRT Terms:

[+]

Bridges And Culverts Bridges And Other Structures Distortion (Structures) Fatigue Cracking Finite Element Method Girders Highways Maintenance And Preservation Rehabilitation (Maintenance) Repairing Retrofitting Skew Bridges Subassemblies
Publication/ Report Number:

25-1121-0003-246
Resource Type:

Tech Report
Geographical Coverage:

United States ; Nebraska

United States ; Nebraska Less -
TRIS Online Accession Number:

01487960
Edition:

Final Report
Corporate Publisher:

University of Nebraska--Lincoln ; Mid-America Transportation Center

University of Nebraska--Lincoln ; Mid-America Transportation Center Less -
Abstract:

This study was aimed at assessing the performance of the newly-developed angles-with-plate retrofit for repairing distortion-induced fatigue in skewed girder-to-crossframe connections. Two physical tests were performed on skewed girder-crossframe assemblies, in which distortion-induced fatigue cracks were generated. One specimen was skewed 20- deg., and the other was skewed 40-deg. The angles-with-plate retrofit was applied in both set-ups, and the crack propagation rates were compared before and after retrofitting. It was found that the angles-with-plate retrofit was very effective in significantly reducing crack propagation in both of the skewed specimens. A series of computer simulations were performed in which the specimens were modeled in the uncracked, cracked, and retrofitted configurations. The computer simulation results agreed well with the experimental findings, showing that the retrofit successfully reduced stress demands in the connection details.
Format:

PDF
Funding:

34772
Collection(s):

University Transportation Centers US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:8120307edc82e3ce2e5e64178f363c34d89f9737a2c58485c826e468dd396b4d
Download URL:

https://rosap.ntl.bts.gov/view/dot/36642/dot_36642_DS1.pdf
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Repair of Skewed Steel Bridges Damaged by Distortion-Induced Fatigue

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