Straßenbrücken zwischen aktuellem und zukünftigem Verkehr – Straßenverkehrslasten nach DIN EN 1991‐2/NA

Freundt, Ursula; Böning, Sebastian; Kaschner, R

doi:10.1002/best.201100050

Cited by 16 publications

(9 citation statements)

References 3 publications

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“…Im Ergebnis der o. g. Projekte wurden die aktuellen Regelungen für die Verkehrslastannahme für den Neubau ([5] mit [9], [1]) von Straßenbrücken abgeleitet. Auf eine detaillierte Darstellung der Methodik wird an dieser Stelle verzichtet und stattdessen neben den o. g. Publikationen auf weitere Veröffentlichungen zur Thematik verwiesen [16].…”

Section: Methodik Zur Ermittlung Objektspezifischer Verkehrslastmodelle Für Straßenbrückenunclassified

Verkehrsdatengestützte Ermittlung von objektspezifischen Lastmodellen für Bestandsbrücken

Freundt

Böning²,

Pelke

2021

Bautechnik

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Für eine Einschätzung der Notwendigkeit, der Effizienz und auch der Priorisierung von Instandsetzungs‐ und Ertüchtigungsmaßnahmen für Brückenbauwerke sind objektspezifische Kenntnisse von Bauwerksbeanspruchungen und Bauwerkszuständen unerlässlich. Aus der Identifizierung von Verkehrsbelegungen (Quantität und Qualität) und der Analyse der Bauwerksreaktionen werden Aussagen zur aktuellen Tragfähigkeit von Bestandsbauwerken abgeleitet. Eine erforderliche Datengrundlage bilden die für das konkrete Bauwerk ermittelten Verkehrsdaten des realen Verkehrs.

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Section: Methodik Zur Ermittlung Objektspezifischer Verkehrslastmodelle Für Straßenbrückenunclassified

Verkehrsdatengestützte Ermittlung von objektspezifischen Lastmodellen für Bestandsbrücken

Freundt

Böning²,

Pelke

2021

Bautechnik

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“…It is pleonastic to point out that numerator and the denominator in Equations (11) or (12) have been evaluated adopting curves having the same shape. It must be also recalled that, in line with their logical bases, fatigue load model no.…”

Section: Appl Sci 2019 9 X For Peer Review 16 Of 30mentioning

confidence: 99%

“…Since LHVs were not included in the Auxerre traffic, their circulation could influence the design of new bridges and even more heavily the assessment of existing infrastructure, potentially producing a disproportionate increase of maintenance and repair costs. The consequences of allowing the circulation of LHVs is thus the subject of several recent studies [9][10][11][12][13][14][15][16][17][18], also aiming to ascertain its potential impact in terms of fatigue damage [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Impact of Road Traffic Tendency in Europe on Fatigue Assessment of Bridges

Croce

2020

Applied Sciences

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Fatigue load models for road bridges given in the Eurocode EN1991-2 have been calibrated considering real traffic measurements that became available around 1990. Since then, traffic composition has evolved considerably, also considering the issuing of the 96/53/EC Directive, which legitimated member states, on an equal and not discriminatory basis, to allow the circulation of Long and Heavy Vehicles (LHVs). Thus, the appropriateness of fatigue load models to cover also the effects of these vehicles, which are longer, heavier and potentially more damaging than common Heavy Goods Vehicles (HGVs), became an issue. The aim of the study is to assess how the evolution of European traffic influences the fatigue assessment of bridges. To capture the essence of the problem, three different real traffic measurements are compared in terms of fatigue damage: the Auxerre (FR) traffic, adopted to define fatigue load models in EN1991-2; the Moerdijk (NL) traffic, characterized by a high percentage of LHVs; and the Igualada (ES) traffic. To assess the current relevance of fatigue load models LM2 and LM4 of EN1991-2, the aptitude of these models to adequately reproduce the effects caused by LHVs is discussed in detail. The results demonstrate that the Auxerre traffic is still the most onerous; that the Moerdijk traffic is generally more severe than the Igualada traffic, and that the fatigue load models of Eurocode do not require major updates. The study is further supplemented by investigating the suitability of the formulae provided in the Eurocodes for the damage equivalence factors λ2 and λ3 to express the influence of the total lorry volume on the fatigue damage. In that latter case, the conclusion is that the formulae proposed in the Eurocodes, based on the assumption of a linear fatigue strength S–N curve with constant conventional slope m, could lead to erroneous, even unsafe, estimates of the fatigue life, especially when details are characterized by constant amplitude fatigue limit ΔσD, thus calling for further improvements of the formulae themselves.

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“…In terms of the bridge deck area, almost 90% of these bridges are made of reinforced or pre-stressed concrete [1] (Figure 1a). The traffic volume on these bridges has been increasing over the past decades, particularly concerning heavy goods traffic [2,3], and is expected to further increase in the future [4] (Figure 1b). Especially, abnormal traffic loads and unapproved excessive charges lead to bridges loaded to their design capacity or beyond [5].…”

Section: Introductionmentioning

confidence: 99%

Strengthening of Existing Bridge Structures for Shear and Bending with Carbon Textile-Reinforced Mortar

et al. 2017

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Abstract:Increasing traffic loads and changes in code provisions lead to deficits in shear and flexural capacity of many existing highway bridges. Therefore, a large number of structures are expected to require refurbishment and strengthening in the future. This projection is based on the current condition of many older road bridges. Different strengthening methods for bridges exist to extend their service life, all having specific advantages and disadvantages. By applying a thin layer of carbon textile-reinforced mortar (CTRM) to bridge deck slabs and the webs of pre-stressed concrete bridges, the fatigue and ultimate strength of these members can be increased significantly. The CTRM layer is a combination of a corrosion resistant carbon fiber reinforced polymer (CFRP) fabric and an efficient mortar. In this paper, the strengthening method and the experimental results obtained at RWTH Aachen University are presented.

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Straßenbrücken zwischen aktuellem und zukünftigem Verkehr – Straßenverkehrslasten nach DIN EN 1991‐2/NA

Cited by 16 publications

References 3 publications

Verkehrsdatengestützte Ermittlung von objektspezifischen Lastmodellen für Bestandsbrücken

Verkehrsdatengestützte Ermittlung von objektspezifischen Lastmodellen für Bestandsbrücken

Impact of Road Traffic Tendency in Europe on Fatigue Assessment of Bridges

Strengthening of Existing Bridge Structures for Shear and Bending with Carbon Textile-Reinforced Mortar

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