Fatigue performance of stiffened pole-to-base plate socket connections in high-mast structures / Sougata Roy in Journal of structural engineering, Vol. 138 N° 10 (Octobre 2012)  

Public ISBD [article]  inJournal of structural engineering > Vol. 138 N° 10 (Octobre 2012) . - pp.1203–1213. Titre : Fatigue performance of stiffened pole-to-base plate socket connections in high-mast structures Type de document : texte imprimé Auteurs : Sougata Roy, Auteur ; Yeun Chul Park, Auteur Année de publication : 2013 Article en page(s) : pp.1203–1213. Note générale : Génie civil Langues : Anglais (eng) Mots-clés : High-mast structures High-level luminaire Pole-to-base plate connection Tube-to-transverse Stiffened socket Fatigue Hot-spot stress limit Résumé : Fatigue performance of stiffened pole-to-base plate socket connection in high-mast lighting structures was evaluated by experimental and analytical studies. In absence of sufficient experimental data, constant amplitude fatigue limit (CAFL) of longitudinal stiffener terminations on pole walls is classified as Category E′ in the existing American Association of State Highway and Transpiration Officials (AASHTO) specification. Fatigue performance of this connection in the thin-walled tubular structures is controlled by localized secondary bending stress, the magnitude of which depends on the relative stiffness of the connecting elements. Ten full-size high-mast specimens having stiffened socket connection were tested under constant amplitude reversal loading to determine the fatigue resistance of this connection in finite and infinite life regimes. The specimen design was optimized by parametric finite-element analysis (FEA) and local stress approaches. FEA results were verified by conducting static tests on an elaborately instrumented specimen. The test results demonstrated that an optimized stiffened connection can provide a CAFL of AASHTO fatigue Category D in commonly used high-mast structures. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000554 [article] Fatigue performance of stiffened pole-to-base plate socket connections in high-mast structures [texte imprimé] / Sougata Roy, Auteur ; Yeun Chul Park, Auteur . - 2013 . - pp.1203–1213. Génie civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 138 N° 10 (Octobre 2012) . - pp.1203–1213. Mots-clés : High-mast structures High-level luminaire Pole-to-base plate connection Tube-to-transverse Stiffened socket Fatigue Hot-spot stress limit Résumé : Fatigue performance of stiffened pole-to-base plate socket connection in high-mast lighting structures was evaluated by experimental and analytical studies. In absence of sufficient experimental data, constant amplitude fatigue limit (CAFL) of longitudinal stiffener terminations on pole walls is classified as Category E′ in the existing American Association of State Highway and Transpiration Officials (AASHTO) specification. Fatigue performance of this connection in the thin-walled tubular structures is controlled by localized secondary bending stress, the magnitude of which depends on the relative stiffness of the connecting elements. Ten full-size high-mast specimens having stiffened socket connection were tested under constant amplitude reversal loading to determine the fatigue resistance of this connection in finite and infinite life regimes. The specimen design was optimized by parametric finite-element analysis (FEA) and local stress approaches. FEA results were verified by conducting static tests on an elaborately instrumented specimen. The test results demonstrated that an optimized stiffened connection can provide a CAFL of AASHTO fatigue Category D in commonly used high-mast structures. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000554

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