Ultimate Load Test of Slab‐on‐Girder Bridge

Bakht, Baidar; Jaeger, Leslie G.

doi:10.1061/(asce)0733-9445(1992)118:6(1608)

Cited by 58 publications

(20 citation statements)

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“…According to analysis of the von Mises stress (Figure 18) obtained from explicit analysis in NLFEA, it can be seen that, due to arching system, the bridge deck slabs under a wheel footprint fail in punching rather than flexure; this was also investigated by other researchers (Bakht and Jaeger, 1992;Mufti et al, 1993). Because the ratio between lengths in two directions of load area in the authors' test was large, a combination of two types of failures (e.g.…”

Section: Failure Mechanismmentioning

confidence: 85%

Non-linear finite-element analysis of punching capacities of steel–concrete bridge deck slabs

Zheng

Robinson²,

Taylor³

et al. 2012

Proceedings of the Institution of Civil Engineers - Structures

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Punching failure is the common failure mode in concrete bridge deck slabs when these structural components are subjected to local patch loads, such as tyre loads. Past research has shown that reinforced concrete slabs in girderslab type bridges have a load-carrying capacity far greater than the ultimate static loads predicted by traditional design methods, because of the presence of compressive membrane action. However, due to the instability problems from punching failure, it is difficult to predict ultimate capacities accurately in numerical analyses. In order to overcome the instability problems, this paper establishes an efficient non-linear finite-element analysis using the commercial finite-element package Abaqus. In the non-linear finite-element analysis, stabilisation methods were adopted and failure criteria were established to predict the ultimate punching behaviour of deck slabs in composite steel-concrete bridges. The proposed non-linear finite-element analysis predictions showed a good correlation on punching capacities with experimental tests.

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Section: Failure Mechanismmentioning

confidence: 85%

Non-linear finite-element analysis of punching capacities of steel–concrete bridge deck slabs

Zheng

Robinson²,

Taylor³

et al. 2012

Proceedings of the Institution of Civil Engineers - Structures

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“…Les rCsultats obtenus rejoignent d'une certaine faqon les observations faites par Bakht et Jaeger (1992). Ces derniers avaient observC que m&me en l'absence de connecteur de cisaillement, les poutres d'acier du pont Stoney Creek continuaient 2 porter les charges auxquelles on le souinettait, bien au-del2 de la premikre apparition de la plastification.…”

Section: Rksultats Et Analyses Essnis 1 2 Etunclassified

Évaluation expérimentale et renforcement des ponts en acier avec dalle de béton non participante

Dionne¹,

Beaulieu²,

Picard³

1994

Can. J. Civ. Eng.

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R e~u le 12 avril 1993 RCvision acceptCe le 14 octobre 1993 Une Ctude expkrimentale a CtC rCalisCe dans le but de connaitre l'importance de l'effet bCnCfique qu'apporte, sur la risistance h la flexion des poutres en acier, la friction entre l'aile superieure des poutres et la dalle de biton dans des ouvrages sans sections mixtes. Les rCsultats obtenus ont permis de dCmontrer que la friction h l'interface acier-bCton est suffisante pour stabiliser transversalement une poutre d'acier m&me si cette derniere, en raison de son Clancement et de sa faible rigidit6 en torsion, est sensible au probleme de dCversement. Toutefois, une augmentation quasi negligeable de la rigidit6 flexionnelle a Ct C observCe, ce qui dCmontre que la friction seule est insuffisante pour dCvelopper une action mixte. Pour augmenter l'effet de la friction, deux types de connecteurs ont Ct C utilisCs afin de relier la dalle de bCton aux poutres d'acier. L'efficacitC de ces liaisons a Ct C vCrifiCe expCrimentalement.Mots clks : ponts en acier, dCversement, action mixte friction, renforcement.An experimental study was carried out to assess the stabilizing action of the friction between concrete slab and steel beams in noncomposite constructions. Slender beams, sensitive to lateral torsional buckling, were used in the experimental work. The results show that the friction is sufficient to prevent lateral torsional buckling of the steel beams. However, the flexural stiffness was not significantly increased so that friction alone is not sufficient to develop a composite action. To increase the frictional effect, the concrete slab was linked to the steel beams by two types of connectors. Additional tests were carried out to verify the efficiency of these connectors.

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“…Namely, as the magnitude of the load decreases, in general so does the degree of composite action. For example, in one study it was reported that composite action under service-level loads was measured, but when the load was increased, the composite action dissipated [7]. Furthermore, a shift in the location of the elastic neutral axis can be caused by other factors (e.g.…”

Section: Introductionmentioning

confidence: 99%

Field Evaluation of Unintended Composite Action Between Steel Plate Girders and Concrete Slab in Highway Bridges

Judd

2019

ce papers

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Unintended composite action between steel plate girders and concrete slab is a well‐recognized, but challenging aspect of evaluating highway bridge behaviour because the degree of slip between the slab and girder is difficult to predict. In this study, a method to evaluate the effect of unintended composite action using field testing is presented. The method is illustrated using a four‐span five girder highway bridge instrumented with strain gages at maximum positive and negative moment locations and subjected to a vehicle with a calibrated load. Results indicate that all the girders exhibited partial composite action. Measurement of composite action was less reliable when the instrumented location was not close to the load.

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Ultimate Load Test of Slab‐on‐Girder Bridge

Cited by 58 publications

References 0 publications

Non-linear finite-element analysis of punching capacities of steel–concrete bridge deck slabs

Non-linear finite-element analysis of punching capacities of steel–concrete bridge deck slabs

Évaluation expérimentale et renforcement des ponts en acier avec dalle de béton non participante

Field Evaluation of Unintended Composite Action Between Steel Plate Girders and Concrete Slab in Highway Bridges

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