Self-centering connections for traffic sign supporting structures.
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2015-03-01
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Abstract:Steel structures supporting traffic sign panels are designed as intended to dissipate energy by
yielding structural members during severe wind loading (ex. strong hurricanes). Yielding results
in inelastic deformations, which are permanent damage to structural members. Structures with
permanent deformations present the out-of-plumb appearance. Damage might be repairable;
however, deconstruction and replacement of an off-centered structure with a new structure is
usually more economical. If a new design approach that controls damage and avoids replacement
can be developed, the direct and indirect costs of post-extreme-wind repair for traffic sign
supporting structures can be saved enormously.
At present, the design approach mitigating damage for traffic sign supporting structures under
extreme wind loads are undeveloped. This research conducts an exploratory study on the new
design method of “self-centering connections,” termed “SC connections.” The scopes of this
research project are: (1) design equations and criteria development; and (2) validation through
numerical analyses.
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