Fatigue testing of galvanized and ungalvanized socket connections.

Ocel, Justin M.; Turner-Fairbank Highway Research Center

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Fatigue testing of galvanized and ungalvanized socket connections.

2014-09-01
By Ocel, Justin M.

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English

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Details:

Creators:

Ocel, Justin M.
Corporate Creators:

Turner-Fairbank Highway Research Center
Subject/TRT Terms:

[+]

Fatigue Tests Galvanizing Poles (Supports) Sign Supports Specimens Structural Connection Welds
Publication/ Report Number:

FHWA-HRT-14-066
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

United States. Federal Highway Administration. Office of Infrastructure Research and Development
Abstract:

The fatigue resistance of welded traffic signal support structure details is an ongoing research topic being

addressed at multiple universities primarily through state funding mechanisms. Fatigue problems with these

structures have plagued multiple states, and a handful of collapses are identified in the open literature. Some

premature failures have been hypothesized to have been caused by cracking in the zinc metal bath during

galvanizing. This led to a fatigue testing matrix of socket connection geometries in a galvanized and

ungalvanized state. Specimens were attained from two different pole manufacturers and fabricated using their

own techniques. This report describes how the specimens were tested along with the results showing the

difference in fatigue life between galvanized and ungalvanized structures. Generally, the galvanized specimens

showed a one-category reduction in fatigue life versus identical specimens that were not galvanized.
Format:

PDF
Collection(s):

Federal Highway Administration US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:08e75b4a38efddb15f5717fa93cf460080f35d103140a6bd9e96179e99582d42
Download URL:

https://rosap.ntl.bts.gov/view/dot/28048/dot_28048_DS1.pdf
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Fatigue testing of galvanized and ungalvanized socket connections.

Details:

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