Dynamic load environment of bridge-mounted sign support structures : executive summary report.

Huckelbridge, Arthur A.; Case Western Reserve University. Department of Civil Engineering

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ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.

i

Dynamic load environment of bridge-mounted sign support structures : executive summary report.

2005-09-01
By Huckelbridge, Arthur A.

[PDF-83.00 KB]

English

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Details:

Creators:

Huckelbridge, Arthur A.
Corporate Creators:

Case Western Reserve University. Department of Civil Engineering
Corporate Contributors:

Ohio. Dept. of Transportation ; United States. Federal Highway Administration

Ohio. Dept. of Transportation ; United States. Federal Highway Administration Less -
Subject/TRT Terms:

[+]

Bridges Bridges--Live Loads--Ohio Live Loads Structures Traffic Signs Traffic Signs And Signals--Supports--Ohio
Publication/ Report Number:

ST/SS/05-002
Resource Type:

Tech Report
Geographical Coverage:

Ohio
Edition:

Executive summary report.
Corporate Publisher:

Case Western Reserve University. Dept. of Civil Engineering
Abstract:

A bridge-mounted welded aluminum sign support

structure suffered a fatigue failure on Interstate

Route 77, just south of Cleveland, OH. The sign

support structure

was a 72 foot

span, bridge-type,

four chord

space truss,

comprised entirely

of tubular

members. The

failure was

located at a diagonal to chord joint, initiating at the

weld toe and progressing completely around the

circumference of the chord until fracture of the

chord member occurred.

Bridge-type sign structures typically have a high

enough natural frequency that wind-induced

vibrations are not a major

design concern. For that

reason an investigation was

undertaken to arrive at an

explanation of the fatigue

failure.

This investigation involved a

combination of finite

element analysis, field testing under actual truck

loading, and laboratory fatigue testing of remnants

of the actual failed structure.
Format:

PDF
Funding:

134153
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:20e686ddfbbbf4cbee41260ef9d79d7f590fc4ac1679cddf233ada2d6a702554
Download URL:

https://rosap.ntl.bts.gov/view/dot/17528/dot_17528_DS1.pdf
File Type:

No Additional Files

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Dynamic load environment of bridge-mounted sign support structures : executive summary report.

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