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Reversed cyclic flexural behavior of spiral DSAW and single seam ERW steel pipe piles / Steven J. Fulmer in Journal of structural engineering, Vol. 138 N° 9 (Septembre 2012) 

Public ISBD [article]  in Journal of structural engineering > Vol. 138 N° 9 (Septembre 2012) . - pp.1099–1109 Titre : Reversed cyclic flexural behavior of spiral DSAW and single seam ERW steel pipe piles Type de document : texte imprimé Auteurs : Steven J. Fulmer, Auteur ; Mervyn J. Kowalsky, Auteur ; James M. Nau, Auteur Année de publication : 2012 Article en page(s) : pp.1099–1109 Note générale : Génie civil Langues : Anglais (eng) Mots-clés : Pile  Pipe  Steel  Spiral  Helical  Weld  Flexure  Buckling  Cyclic Résumé : This paper presents the findings of an investigation on the flexural performance of hollow steel pipe piles subjected to reversed cyclic loading. The testing evaluated both spirally double submerged arc welded (DSAW) and traditional longitudinal single seam electric resistance welded (ERW) pipe piles to determine the effects of the spiral welding manufacturing process on the structural performance of the pile. Some of the tests were conducted on previously driven piles to study the effects of driving stresses. The experimental results and observations indicated that the undesirable failure mode of spiral weld cracking did not control the ultimate limit state in any of the spirally welded specimens considered. Although weld fracture did occur in each spirally welded specimen, it did not develop until the specimen was subjected to large inelastic deformations and was ultimately the result of locally increased strains caused by local buckling. Each traditional single seam specimen failed in a similar manner with pile wall local buckling developing at inelastic deformation levels comparable to those of the spirally welded specimens. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000553 [article] Reversed cyclic flexural behavior of spiral DSAW and single seam ERW steel pipe piles [texte imprimé] / Steven J. Fulmer, Auteur ; Mervyn J. Kowalsky, Auteur ; James M. Nau, Auteur . - 2012 . - pp.1099–1109. Génie civil Langues : Anglais (eng) in Journal of structural engineering > Vol. 138 N° 9 (Septembre 2012) . - pp.1099–1109 Mots-clés : Pile  Pipe  Steel  Spiral  Helical  Weld  Flexure  Buckling  Cyclic Résumé : This paper presents the findings of an investigation on the flexural performance of hollow steel pipe piles subjected to reversed cyclic loading. The testing evaluated both spirally double submerged arc welded (DSAW) and traditional longitudinal single seam electric resistance welded (ERW) pipe piles to determine the effects of the spiral welding manufacturing process on the structural performance of the pile. Some of the tests were conducted on previously driven piles to study the effects of driving stresses. The experimental results and observations indicated that the undesirable failure mode of spiral weld cracking did not control the ultimate limit state in any of the spirally welded specimens considered. Although weld fracture did occur in each spirally welded specimen, it did not develop until the specimen was subjected to large inelastic deformations and was ultimately the result of locally increased strains caused by local buckling. Each traditional single seam specimen failed in a similar manner with pile wall local buckling developing at inelastic deformation levels comparable to those of the spirally welded specimens. ISSN : 0733-9445 En ligne : http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29ST.1943-541X.0000553