Evaluation of Repair Procedures for Web Gap Fatigue Damage

Keating, Peter B.; Wilson, Scott D.; Kohutek, Terry L.

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Evaluation of Repair Procedures for Web Gap Fatigue Damage

1996-09-01
By Keating, Peter B. ; Wilson, Scott D. ; Kohutek, Terry L.

File Language:

English

[PDF - 19.92 MB]

Details

Creators:

Keating, Peter B. ; Wilson, Scott D. ; Kohutek, Terry L.
Corporate Creators:

Texas Transportation Institute. Texas A&M University
Corporate Contributors:

Texas. Dept. of Transportation. Research and Technology Transfer Office ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA/TX-97/1360-1
Resource Type:

Tech Report
Geographical Coverage:

Texas ; United States
Edition:

Final Report: September 1992 - August 1994
Corporate Publisher:

Texas Transportation Institute. Texas A&M University
Abstract:

Connection plates cross frame diaphragms not rigidly attached to tension flanges can develop fatigue cracking in the unstiffened web gap due to the out-of-plane distortion. This report investigates repair procedures for fatigue damage in the web gap of steel highway bridges. The procedures investigated include drilling holes at crack tips, flame-cutting holes to remove extensively cracked regions, and gouging and rewelding. In addition, rigid attachment retrofits of tight-fit and cut-short connection plate details are examined. The evaluation of these repairs is made by monitoring their implementation on an in-service bridge, laboratory fatigue testing of simulated repairs, and finite element analysis. All three crack repair procedures were found to be viable. However, procedures outlined must be followed to achieve the quality in the repair that will insure continued safe use of the bridge throughout its remaining life. The results indicate that the degree of finish given to the repair is as important as satisfying the prescribed repair criteria.
Format:

PDF
Funding:

0-1360
Download URL:

https://rosap.ntl.bts.gov/view/dot/82650/dot_82650_DS1.pdf
File Type:

[PDF - 19.92 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:c0303a39674c4439dbc08a13b7b4ba018b4cd0e7de666a5de1efbd5d49a39de128933ca40db32c6e16b01a8e91ee72a763f873842d55c871c9a0a45b04a7ce17

File Language:

English

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