A review of arching and compressive membrane action in concrete bridges

Collings, David; Sagaseta, Juan

doi:10.1680/bren.14.00039

Cited by 11 publications

(9 citation statements)

References 37 publications

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“…For an unrestrained beam or slab this change in length, or dilation, is often ignored, although Beeby and Faithibitaraf (2001) and Mathias et al (2019) note that this can be an unsafe assumption. For a restrained or part restrained structure the restraint of this dilation causes some internal arching or CMA which may stiffen the structure, reduce crack widths and increase capacity (Collings and Sagaseta, 2016) under localised wheel axle or vehicle loading; bridge deck slabs offer this restraint. It is proposed that the local dilation strains may be added into the phase-2 analysis as a load case using an effective strain approach described in the next section.…”

Section: K =mentioning

confidence: 99%

Modern concrete bridge deck analysis considering the effects of cracking

Collings

Sagaseta

2021

Proceedings of the Institution of Civil Engineers - Structures

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This paper outlines a refinement to current grillage and linear finite element analysis methods to better estimate the behaviour of reinforced concrete deck slabs on prestressed beam or steel girder bridges, suitable for modern codes of practice and computerised methods. The work is part of research aimed at unlocking the potential of compressive membrane action. The paper proposes a three-phase approach for the prediction of cracking, deflections, ductility and load capacity. The method increases the accuracy of current grillage and conventional linear finite element methods by taking into account flexural cracking extensions using an effective strain method. The method gives better estimates of deflections at serviceability and allows for better estimates of the ultimate load capacity of existing bridges. This results in more economic reinforcement designs with lower carbon footprint for new bridges.

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Section: K =mentioning

confidence: 99%

Modern concrete bridge deck analysis considering the effects of cracking

Collings

Sagaseta

2021

Proceedings of the Institution of Civil Engineers - Structures

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“…As such, this assessment method can be used when analytical models are insufficient. Situations when analytical models are insufficient are: when no structural plans are available (Aguilar et al, 2015), when there are large uncertainties on the structural capacity as the result of material deterioration or degradation (Lantsoght et al, 2017c), or when the analytical models cannot (fully) consider additional sources of resistance such as transverse load redistribution (Lantsoght et al, 2015) or compressive membrane action (Collings and Sagaseta, 2015).…”

Section: Introductionmentioning

confidence: 99%

Optimizing Finite Element Models for Concrete Bridge Assessment With Proof Load Testing

Lantsoght

Boer²,

Veen

et al. 2019

Front. Built Environ.

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Proof load testing of existing reinforced concrete bridges is becoming increasingly important as the current bridge stock is aging. In a proof load test, a load that corresponds to the factored live load is applied to a bridge structure, to directly demonstrate that a bridge fulfills the code requirements. To optimize the procedures used in proof load tests, it can be interesting to combine field testing and finite element modeling. Finite element models can for example be used to assess a tested structure after the test when the critical position could not be loaded. In this paper, the case of viaduct De Beek, a four-span reinforced concrete slab bridge, is studied. Upon assessment, it was found that the requirements for bending moment are not fulfilled for this structure. This viaduct was proof load tested in the end span. However, the middle spans are the critical spans of this structure. The initial assessment of this viaduct was carried out with increasingly refined linear finite element models. To further study the behavior of this bridge, a non-linear finite element model is used. The data from the field test (measured strains on the bottom of the concrete cross-section, as well as measured deflection profiles) are used to update the non-linear finite element model for the end span, and to improve the modeling and assessment of the critical middle spans of the structure. Similarly, an improved assessment based on a linear finite element model is carried out. The approaches shown for viaduct De Beek should be applied for other case studies before recommendations for practice can be formulated. Eventually, an optimized combination of field testing and finite element modeling will result in an approach that potentially reduces the cost of field testing.

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“…Upon assessment, the thin deck slabs do not fulfil the code requirements for punching shear. One mechanisms that is not considered in the codes, but that enhances the capacity of these thin decks, is compressive membrane action [13][14][15][16][17][18][19][20]. Additionally, the fatigue capacity of the thin decks is subject to discussion, as it is not known if progressive cracking and damage accumulation affects the capacity-enhancing effect of compressive membrane action [21].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Assessment of Prestressed Concrete Slab-between-Girder Bridges

Lantsoght¹,

Koekkoek²,

Veen³

et al. 2019

Preprint

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In the Netherlands, the assessment of existing prestressed concrete slab-between-girder bridges showed that the thin, transversely prestressed slabs may be critical for static and fatigue punching when evaluated using the recently introduced Eurocodes. On the other hand, compressive membrane action increases the capacity of these slabs and changes the failure mode from bending to punching shear. To improve the assessment of the existing prestressed slab-between-girder bridges in the Netherlands, two 1:2 scale models of an existing bridge, the Van Brienenoord Bridge, were built in the laboratory and tested monotonically as well as under cycles of loading. The result of these experiments is: 1) the static strength of the decks, showing that compressive membrane action significantly enhances the punching capacity, and 2) the Wöhler curve of the decks, showing that compressive membrane action remains under fatigue loading. The experimental results can then be used for the assessment of the most critical existing slab-between-girder bridge. The outcome is that the bridge has sufficient punching capacity for static and fatigue loads, and thus that the existing slab-between-girder bridges in the Netherlands fulfil the code requirements for static and fatigue punching.

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A review of arching and compressive membrane action in concrete bridges

Cited by 11 publications

References 37 publications

Modern concrete bridge deck analysis considering the effects of cracking

Modern concrete bridge deck analysis considering the effects of cracking

Optimizing Finite Element Models for Concrete Bridge Assessment With Proof Load Testing

Fatigue Assessment of Prestressed Concrete Slab-between-Girder Bridges

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