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• W587014359 abstract "The focus of this research report concerns a portion of long-span Hollow Structural Section (HSS) trusses exhibiting geometry typical within Pennsylvania Department of Transportation (PennDOT) design contexts: the bearing region at the upright supports. In Pennsylvania, the subject standard detail involves curved steel saddle bearings and a structural Tee (ST) connected directly to a circular HSS chord wall in end bearing; both within close proximity to the open end of the HSS chord. In simple-span HSS trusses, the primary load path for the reaction force developed at the saddles is through the chord and directly into the first intermediate vertical member. Therefore, the overall bearing capacity is influenced by all of these elements. It must be noted that this region is being investigated locally without involving the global behavior of the entire truss (i.e. the more complicated member internal forces, resulting from effects of the structural system surrounding the connection detail, are not considered). The assumption here is that the effects of such additional internal forces are of small magnitude and hence will not significantly influence the local limit states under investigation. In considering this simplified loading condition, it is noted that while some research has been done on loads applied directly through the ends of open rolled sections; no previous work has been found in the literature concerning the cases of saddle-type bearings located at chord ends or an ST bearing on a circular HSS chord. This research is executed through the application of sophisticated nonlinear finite element modeling techniques as well as full-scale experimental testing. The nonlinear finite element modeling employs experimentally verified modeling strategies (previously verified against available relevant tests on tubular structures found in the literature as well as those tests carried out as part of the current research) and forms the cornerstone for the parametric studies carried out in formulation of a design equation aimed at predicting sidewall crushing strength in circular HSS members. The full-scale tests carried out as part of the current research were executed using geometric configurations identified as either being most critical, or most germane, vis-a-vis initial parametric finite element analyses. Through the use of finite element modeling studies that are supported and verified with the judicious use of full-scale experimental testing, a very large sample space of geometric combinations are economically considered. This is of pivotal importance to the research since a design equation must be applicable to all reasonable geometric configurations that are likely to arise in practice." @default.
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• W587014359 date "2004-12-13" @default.
• W587014359 modified "2023-09-24" @default.
• W587014359 title "Buckling Strength of Circular Tubes in Signs" @default.
• W587014359 hasPublicationYear "2004" @default.
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