Failure mechanism for longitudinally stiffened I girders subjected to patch loading

Hajdin, Nikola; Marković, Nenad M.

doi:10.1007/s00419-012-0679-4

Cited by 10 publications

(14 citation statements)

References 13 publications

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“…The patch load length ss was varied from 5 mm (ss / hw = 0.01) to 250 mm (ss / hw = 0.5). Similarly to our previous numerical analyses [13][14]16], different shapes of initial geometrical imperfections were considered in the current study. The present research was conducted on steel plate girders with a web panel aspect ratio of 2, while in [13][14]16], the ratio a / hw was 1 (the girder span was increased from 500 mm to 1000 mm while all the other geometrical properties were kept constant).…”

Section: Parametric Studymentioning

confidence: 99%

“…Some numerical studies are given in [10-12, 15, 17-19], in which other parameters (i.e., the position of the longitudinal stiffener, web panel aspect ratio, web panel thickness, flange stiffness, and number of longitudinal stiffeners) along with the patch load length were considered. Additionally, we showed that initial geometrical web panel imperfections can play a decisive role since they affect the ultimate strength and behavior of steel plate girders, especially for longitudinally stiffened girders [13][14]16]. In these studies, different shapes of initial geometrical web panel imperfections were considered along with different patch load length.…”

Section: Introductionmentioning

confidence: 98%

“…We also showed that this particular shape is similar to the third buckling mode of longitudinally stiffened girders (obtained from an eigenvalue analysis). However, in these studies [13][14]16], steel plate girders with a web panel aspect ratio of 1 were considered solely. Thus, it is not clear how initial geometrical web panel imperfections along with different patch load lengths will affect the ultimate strengths of steel plate girders with different web panel aspect ratios (i.e., increasing the girder span).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Patch load resistance of longitudinally stiffened steel plate girders: A parametric study

Kovacevic¹,

Ceranic²,

Marković³

2021

ce papers

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In this paper, an in‐depth nonlinear finite element analysis is carried out on longitudinally unstiffened and stiffened welded I‐steel plate girders subjected to patch loading. The most realistic load case is during the incremental launching of multi‐span steel and composite bridges over temporary or permanent supports. Bridge plate girders are usually reinforced by longitudinal and transverse stiffeners in order to prevent web panel buckling and to increase the bending and shear strength. The current European design standard EN 1993‐1‐5 also requires a stability control check for concentrated transverse forces (patch loading) since it can be a decisive design criterion. By using longitudinal stiffeners for flexural and shear resistance, the patch loading carrying capacity can be increased as well. Previous experimental studies showed that the EN1993‐1‐5 patch loading resistance model significantly underestimates the ultimate strength of longitudinally stiffened plate girders. The paper is primarily dealing with numerical research of the post‐buckling behavior and ultimate strength of longitudinally stiffened I‐steel plate girders reinforced by one longitudinal stiffener. The main objective of the present work is to investigate the influence of different geometrical parameters, including patch load length, web panel aspect ratio, and initial geometrical imperfections, on the ultimate strength of longitudinally stiffened plate girders. We showed in this study that for all the considered initial geometrical imperfections, the patch load resistance increases as the patch load length is increased. The lowest ultimate strength of longitudinally stiffened plate girders was determined for initial geometrical imperfections that resembled the deformed shape at collapse (collapse‐affine imperfections). The web panel aspect ratio also influenced the patch load resistance and lower ultimate strengths were returned for bigger web panel aspect ratios. Finally, further research recommendations are presented.

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Section: Parametric Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Patch load resistance of longitudinally stiffened steel plate girders: A parametric study

Kovacevic¹,

Ceranic²,

Marković³

2021

ce papers

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“…In both methodologies, the upper bound theorem of plastic collapse was employed to develop mechanical models that define the elastoplastic collapse of the girder components (flanges and web). The upper bound limit analysis has also been used by other authors [5][6][7] to describe the failure mechanism of longitudinally stiffened girder web subjected to patch loading.…”

Section: Introductionmentioning

confidence: 99%

Strength of steel I-girders subjected to eccentric patch loading

Graciano

Uribe-Henao

2014

Engineering Structures

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“…Revisión del Estado del Arte A102 influencia de los rigidizadores longitudinales a través del factor (A.174). En el trabajo de Hajdin (2012) se adopta el modelo de Roberts para el cálculo de la resistencia de las vigas con rigidizadores longitudinales, afectando la formulación de factores correctores calibrados empíricamente.…”

Section: unclassified

Resistencia a carga concentrada transversal considerando la contribución conjunta de un nervio de rigidez y de los rigidizadores transversales : aplicación al diseño de puentes empujados

Alonso¹

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Y gracias a mi familia. Como siempre, os pongo detrás del trabajo, pero sois mucho más importantes que él. Gracias precisamente por entenderlo tantas y tantas veces en que habéis soportado las horas dedicadas a esta Tesis. Sin mi familia detrás no habría Tesis Doctoral, porque nada tendría sentido.Gracias a mis padres, por serlo.Gracias a mis dos tías, por ser otras dos madres.Gracias a mis hijos, por iluminarme la vida.Gracias a mi familia política, toda sin excepción, por quererme tanto.Gracias, Rosa, por la familia que hemos construido.

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Failure mechanism for longitudinally stiffened I girders subjected to patch loading

Cited by 10 publications

References 13 publications

Patch load resistance of longitudinally stiffened steel plate girders: A parametric study

Patch load resistance of longitudinally stiffened steel plate girders: A parametric study

Strength of steel I-girders subjected to eccentric patch loading

Resistencia a carga concentrada transversal considerando la contribución conjunta de un nervio de rigidez y de los rigidizadores transversales : aplicación al diseño de puentes empujados

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