Structural Engineering Research On-Call Services Task 2 – Aluminum Truss Overhead Sign Support Flange Damage Assessment

Steinberg, Eric P; Miller, Richard A.; Nims, Douglas K.; White, Kevin

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Structural Engineering Research On-Call Services Task 2 – Aluminum Truss Overhead Sign Support Flange Damage Assessment

2019-09-01
By Steinberg, Eric P ; Miller, Richard A. ; Nims, Douglas K.

File Language:

English

Details

Creators:

Steinberg, Eric P ; Miller, Richard A. ; Nims, Douglas K. ; White, Kevin
Corporate Creators:

Ohio University. Department of Civil Engineering ; University of Cincinnati. Department of Civil and Environmental Engineering ; University of Toledo. Dept. of Civil Engineering ; E.L. Robinson Engineering of Ohio Company
Corporate Contributors:

Ohio. Department of Transportation. Office of Statewide Planning and Research ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA/OH-2019-21
Resource Type:

Tech Report
Geographical Coverage:

Ohio;United States
Edition:

Final Report
Corporate Publisher:

Ohio. Department of Transportation. Office of Statewide Planning and Research
Abstract:

A variety of structural supports exist to mount signs along highways. One type of support is a truss that spans the width of the highway that allows for the placement of overhead signs. These trusses are subject primarily to wind and gravity loads. The connections between the chords and the diagonals are typical fillet welded. Fillet welds are a fatigue prone detail and the welding potentially can leave a heat affected zone which affects the strength of the joints and the members. A truss with severe cracking near Obetz, Ohio was identified by the Ohio Department of Transportation and removed from service. Research team members inspected the trusses in the field on March 14, 2018 after they were removed from service. The cracking was mapped and elements of the truss including cracked and undamaged joints were removed from the truss and transported to the University of Toledo. Figure 1 shows a cracked horizontal chord member.
Format:

PDF
Funding:

SJN 135250
Download URL:

https://rosap.ntl.bts.gov/view/dot/62345/dot_62345_DS1.pdf
File Type:

[PDF - 490.89 KB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:05a7ecdc792e76a3a0936a14ab1fdabdaf1cdc9fe995b60512e331df2d820c9f9e01dd5ccfdc2fc964960c2c681302b2a92f8d2a2a0903e15ebc584d80adef02

File Language:

English

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