Influences of polymer concrete surfacing and localised load distribution on behaviour up to failure of an orthotropic FRP bridge deck

Sebastian, Wendel; Keller, Thomas; Ross, Joel M

doi:10.1016/j.compositesb.2012.07.050

Cited by 20 publications

(15 citation statements)

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“…Indeed, such fractures have dominated ultimate behaviour in GFRP deck-steel beam hybrids (Keller and Gurtler [3]) and GFRP deck-concrete beam hybrids (Sebastian et al [4]) under global flexure normal to the direction of pultrusion. Wavy interface fractures have also governed failures in isolated decks under local load effects (Gabler and Knippers [5], Sebastian et al [6,7]), in an isolated deck system under global flexure along the direction of pultrusion (Zi et al [8]), and also in deck systems under global flexure normal to the direction of pultrusion (Yanes-Armas et al [9]). This last case [9] induced both Vierendeel and truss actions in the decks, thereby causing progressive fracture within and associated load redistribution between multiple joints of each test specimen in the approach to failure.…”

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confidence: 99%

Fibre waviness in pultruded bridge deck profiles: Geometric characterisation and consequences on ultimate behaviour

Sebastian

2018

Composites Part B: Engineering

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Conventional tests cannot be used to establish the important influence of fibre waviness, a manufacturing legacy at the flange-web joints (FWJs) of pultruded GFRP bridge decks, on the local ultimate behaviour of such decks. Hence a novel, simple and reliable three-step experimental scheme for that purpose is presented herein, using one pultruded deck profile as an exemplar. First, for the given profile, the different individual and bonded deck-deck joint geometries which must be targeted for testing are identified. Second, an effective manual method is put forward to map this waviness at the FWJs. Third, a quasi-static test setup is introduced which enables statically determinate loading of one joint at a time, while also ensuring continuity between this joint and the remaining deck so that the real load paths within the deck are preserved. During the tests failure always occurred by fracture of the wavy fibre-resin interfaces within the FWJs, with a distinct inverse correlation between fibre waviness and failure load, and with the influence of bonding on joint failure behaviour depending on the local flange-web layout. It is concluded that this simple test is sufficiently reliable for extension to assessing local fatigue behaviour at the joints.

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confidence: 99%

Fibre waviness in pultruded bridge deck profiles: Geometric characterisation and consequences on ultimate behaviour

Sebastian

2018

Composites Part B: Engineering

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“…The top thin flange is also subjected to extra local bending due to the patch load. This local bending would be even more pronounced with tyre loads as demonstrated in several studies [34,35], which should be taken into account in studies of wear surface cracking. The secondary stresses due to this local action are depicted in Fig.…”

Section: Results Of Sls Testsmentioning

confidence: 84%

A novel connection for fibre reinforced polymer bridge decks: Conceptual design and experimental investigation

Mara

Al‐Emrani

Haghani

2014

Composite Structures

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Citation for the published paper: Mara, V. ; Al-Emrani, M. ; Haghani, R. (2014) "A novel connection for fibre reinforced polymer bridge decks: Conceptual design and experimental investigation". Composite structures, vol. 117 pp. 83-97. http://dx. ABSTRACTIn the past two decades, the use of fibre reinforced polymer (FRP) decks has attracted a great deal of attention when it comes to the refurbishment of existing bridges and the construction of new ones. FRP materials offer superior properties, such as high specific strength and stiffness, light weight, high fatigue and corrosion resistance and good durability. Because of their low self-weight and prefabrication potential, FRP composites lend themselves to accelerated bridge construction, thereby leading to minimised traffic interference. However, one challenge that is posed by FRP deck systems is the detailing and design of panel level connections. Today, a common practice for joining deck panels on site is adhesive bonding, which compromises the benefit of rapid FRP deck installation due to the time-restricted curing required for structural adhesives. As a result, there is a need for the development of joints which enable more rapid assembly. In this paper, a novel joint configuration for panel level connections is proposed. Numerical analyses and static experimental tests were conducted to evaluate the behaviour and load-carrying capacity of the connection. The overall investigation showed that the presented joint concept is a potential alternative for panel level connections in FRP decks.

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“…However, attributed to unequal pressure distributions. Recently, the issue was addressed in an article on the effect of surfacing on pultruded GFRP bridge deck elements [10] . The transverse flexibility of such elements is even higher than that of orthotropic bridges, due to the low flexural rigidity in the transverse direction of the uniaxial for the relevant wheel loads of 40-60 kN, the average contact pressure in the edge zones is somewhat higher than the average contact pressure in the centre zone.…”

Section: Proposition 5: Contact Pressure Averages In Edge Zones and Cmentioning

confidence: 99%

“…Thin steel bridge deck plates (10-20 mm) stiffened by ribs at 250 to 350 mm intervals, as used in orthotropic bridge decks [8] , are not rigid surfaces [9] , an effect also found for glass fibre-reinforced composite bridge decks [10] . Indeed, for a flexible steel bridge deck the transverse stiffness of the plate (in the case of thin surfacing) is a magnitude smaller than that of the rib walls.…”

Section: Introductionmentioning

confidence: 99%

Positional footprint characterisation of truck tyres on flexible orthotropic steel bridge decks

Corte¹

2014

Insight

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Vehicular tyre tread and footprint characteristics have been investigated from the point of view of tyre design and manufacturing and dynamic vehicle analysis, as well as for pavement design and analysis. From these analyses, it has become clear that typical commercial truck tyres do not exhibit a uniform pressure over the footprint area. Instead, a highly non-uniform pressure distribution is observed depending on tyre type, internal pressure, axle load, etc. Nevertheless, such analyses are generally related to rigid driving surfaces, but commercial vehicles also frequently cross bridges, where the driving surface is much more flexible. Indeed, the flexibility of a steel deck will change the footprint characteristics due to the adaptation of the contact surface to the presence of more and less rigid areas. In this paper, the pressure distribution under a truck tyre when crossing a bridge with a steel orthotropic bridge deck is investigated. The contact pressure is measured by an 8.4 mm-resolution pressure mat in between a common widebase tyre and an orthotropic bridge deck test specimen. Comparisons are made with existing literature for rigid surfaces, especially the analyses of R Blab at Berkeley, in order to investigate the influence of the tyre pressure, total applied load and the transverse position relative to the rib walls on the pressure distribution. The results indicate that the transverse positioning does indeed affect the pressure distribution, as the stiffer rib wall attracts a larger part of the load. Consequently, uniform pressure loads overestimate plate bending for loads in between the rib walls and underestimate plate bending for loads over the rib walls. In this way, the detailed non-destructive pressure distribution analysis has contributed to a better understanding of failure analysis, especially at the rib-to-deckplate connection, of steel bridge decks

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Influences of polymer concrete surfacing and localised load distribution on behaviour up to failure of an orthotropic FRP bridge deck

Cited by 20 publications

References 10 publications

Fibre waviness in pultruded bridge deck profiles: Geometric characterisation and consequences on ultimate behaviour

Fibre waviness in pultruded bridge deck profiles: Geometric characterisation and consequences on ultimate behaviour

A novel connection for fibre reinforced polymer bridge decks: Conceptual design and experimental investigation

Positional footprint characterisation of truck tyres on flexible orthotropic steel bridge decks

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