مقاله Numerical and experimental study on the interaction cable structure during the failure of a stay in a cable stayed bridge : تی پی بین

خلاصه مقاله

Corrosion, abrasion and fretting fatigue may cause deterioration and, eventually, the failure of a post-tensioning tendon or a stay cable on a cable supported structure. In the present study, the stress acting during the rupture on the remaining portion of the stay which fails is derived, and the role of the rupture time on the response of the structure is discussed from a theoretical and a numerical point of view. In addition, the load–time curve during the rupture and the total time of the rupture of undamaged and damaged wires of seven-wire steel strands are investigated in an experimental program defined on the basis of the previous theoretical results. In the locally damaged specimens, a notch is machined into their outer wires. The specimens are tested under tension at three different strain rates in order to determine the influence of this parameter on the rupture time and on the load–time curve. The damaged specimens also allow us to determine the influence of a local reduction of the cross section on the stiffness and ultimate load of the specimen.

نویسندگان

C.M. Mozos [ Department of Civil Engineering and Building, UCLM University of Castilla-La Mancha, Av. Camilo Jose Cela s/n 13071, Ciudad Real, Spain ]

A.C. Aparicio [ Department of Construction Engineering, UPC Technical University of Catalonia, C. Jordi Girona 1-3, 08034, Barcelona, Spain ]

کلمات کلیدی

Steel strand Failure load–time curve Rupture time Cable supported bridge Exterior tendons

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Engineering Structures

Engineering Structures provides a forum for a broad blend of scientific and technical papers to reflect the evolving needs of the structural engineering and structural mechanics communities. Particularly welcome are contributions dealing with applications of structural engineering and mechanics principles in all areas of technology. The journal aspires to a broad and integrated coverage of the effects of dynamic loadings and of the modelling techniques whereby the structural response to these loadings may be computed.

حوزه های تحت پوشش : structural mechanics, structural engineering