Influence of patch load length on plate girders. Part I: Experimental research

Marković, Nenad M.; Kovacevic, Sasa

doi:10.1016/j.jcsr.2019.02.035

Cited by 30 publications

(12 citation statements)

References 15 publications

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“…The shape and position of the peak amplitude of initial deformation of this buckling mode for both longitudinally unstiffened and stiffened girders are very similar (peak amplitude is pronounced in the lower part of the web). As observed experimentally [2][3][4][5][6][7], the patch load carrying capacity is achieved by local web buckling (local failure mode) or global web buckling (global failure mode) and deformation of the loaded flange (see also Fig. 1 for typical failure modes).…”

Section: Unfavorable Initial Geometrical Imperfectionmentioning

confidence: 67%

“…The girders were modeled as simply supported (preventing the vertical displacement and displacement perpendicular to the plane of the web) at the transverse stiffeners. These boundary conditions correspond to the experimental setup used in [6][7]. The rigid loading blocks (see Fig.…”

Section: Finite Element Modelmentioning

confidence: 99%

“…This position represents the optimum location for the flexural and shear resistance [20]. This study [7] represents an extension of the previous experimental program [6], in which I-steel plate girders with a web panel aspect ratio (a / hw) of 1 were considered, while the other geometrical properties were unchanged.…”

Section: Finite Element Modelmentioning

confidence: 99%

“…However, one parameter that has not been investigated systematically is the patch load length and its influence on the ultimate strength of longitudinally stiffened plate girders reinforced by a single stiffener. Experimentally, this parameter was mostly constant (see the detailed literature review in [6]) and experimental studies with three or more different patch load lengths are scarce [3,[6][7]. In addition, the influence of patch load length on the ultimate strength of longitudinally stiffened steel plate girders is barely investigated numerically.…”

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 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: Unfavorable Initial Geometrical Imperfectionmentioning

confidence: 67%

Section: Finite Element Modelmentioning

confidence: 99%

Section: Finite Element Modelmentioning

confidence: 99%

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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“…However, there are still some uncovered issues as for instance, in the patch loading case the available formulae were developed for short loading lengths [15][16][17]. Some works related to this influence have been presented for ultimate load capacities rather than for elastic critical buckling loads [18][19][20][21][22][23][24]. Therefore, this paper aims at investigating the influence of the loading length on the buckling coefficients and transition rigidity for longitudinally stiffened girders subjected to patch loading.…”

Section: Figurementioning

confidence: 99%

Influence of the patch loading length on the buckling coefficient of longitudinally stiffened plate girders

Loaiza¹,

Graciano²,

Chacón³

2019

Rev.Fac.Ing.Univ.Antioquia

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This paper aims at investigating the effect of the bearing length on the elastic buckling behavior of longitudinally stiffened girder webs subjected to patch loading. Buckling coefficients are calculated by means of linear finite element analysis. Furthermore, a parametric analysis is performed to study the influence of other geometric parameters such as the panel aspect ratio and the geometrical properties of the longitudinal ones. Buckling coefficients of longitudinally stiffened girder webs are computed numerically. The results show that the buckling coefficient for longitudinally stiffener girder webs increases with the loading length. However, this conclusion is considerably affected by other factors such as the position of the stiffener, and panel aspect ratios.

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Numerical Investigation on the Behaviour of Horizontally Curved Steel Box Girder Under Patch Loading

Fathima,

Ajith

2023

Lecture Notes in Civil Engineering

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Influence of patch load length on plate girders. Part I: Experimental research

Cited by 30 publications

References 15 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

Influence of the patch loading length on the buckling coefficient of longitudinally stiffened plate girders

Numerical Investigation on the Behaviour of Horizontally Curved Steel Box Girder Under Patch Loading

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