Existing Steel Railway Bridges Evaluation

Vičan, Josef; Gocál, Jozef; Odrobiňák, Jaroslav; Koteš, Peter

doi:10.1515/cee-2016-0014

Cited by 20 publications

(8 citation statements)

References 4 publications

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“…The paper presents the possibility of using fibre reinforced concrete to strengthen columns taking into account the effect of contact between old concrete and new fibre reinforced concrete on the load-carrying capacity of the cross-section. The practical use of the work can be to strengthen the columns of frame structures or piers of the substructure of bridges with insufficient load-carrying capacity of the cross-section [28][29][30]. It is possible to solve the mentioned problems also using probabilistic analysis [31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Strengthening of Concrete Column by Using the Wrapper Layer of Fibre Reinforced Concrete

et al. 2020

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Structures and bridges are being designed on the proposed and requested design lifetime of 50 to 100 years. In practice, one can see that the real lifetime of structures and bridges is shorter in many cases, in some special cases extremely shorter. The reasons for the lifetime shortening can be increased of the load cases (e.g., due to traffic on bridges, or due to other uses of a structure), using the material of lower quality, implementation of new standards and codes according to Eurocode replacing older ones. During the whole lifetime the structures must be maintained to fulfil the code requests. If the constructions are not able to fulfil the Ultimate Limit States (ULS) and the Serviceability Limit State (SLS), the structures or bridges have to be strengthened (whole or its elements). The purpose of the paper is the presentation of using a layer of the fibre concrete for a columns’ strengthening. Using the fibre reinforced concrete (FRC) of higher tensile strength makes it possible to increase the load-bearing capacity of the cross-section the column. The contact between the old concrete (core of column) and newly added layer (around column) is very important for using that method of strengthening. In the article, there is also a comparison of the surface modification methods.

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Section: Introductionmentioning

confidence: 99%

Strengthening of Concrete Column by Using the Wrapper Layer of Fibre Reinforced Concrete

et al. 2020

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“…In Table 1, is presented a comparison of the individual points calculated according to RILEM and FIB MODEL CODE and the associated increase in internal forces. The results of the work can be applied to strengthening of the substructures of bridges and footbridges, such as columns of pillars [23][24][25][26][27][28][29].…”

Section: Analytical Parametric Studymentioning

confidence: 99%

Innovative strengthening of RC columns using a layer of a fibre reinforced concrete

Koteš

Vavruš

Raczkiewicz

2022

APP

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Reinforced concrete structures that are influenced by degradation, overloading, the thawing and freezing cycles, abrasive damage and corrosion of reinforcement, should be repaired or strengthened. Each of those mentioned situations lead to decreasing the load-carrying capacity of the construction. The damage of a structure or its member causes exceeding the serviceability limit states and ultimate limit states. For this reason, for further use of the structures, they have to be strengthened to increase the load-carrying capacity and to extend the remaining lifetime. A new method for strengthening the vertical members, e.g., columns, is using the fibre reinforced concrete layer and its increased tensile strength in comparison to common RC concrete. This article deals with the theoretical design of dimensioning the columns using a layer of fibre concrete around a column (wrapping). In this case, it is necessary to calculate the residual strength of fibre concrete, which is a crucial factor for the tensile strength of the element.

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“…In the case of railway bridges, this factor defines a multiple of the Load Model 71 (LM71) [13]; therefore, the ratio representing the LCC is referred to as Z LM71 . More details regarding LCC estimation can be found in [14,15].…”

Section: Influence Of Corrosion On Load-carrying Capacitymentioning

confidence: 99%

On the Influence of Corrosion on the Load-Carrying Capacity of Old Riveted Bridges

Gocál¹,

Odrobiňák²

2020

Materials

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Steel corrosion is one of the most dominant factors in the degradation of transport infrastructure. This article deals with the impact of the atmospheric corrosion of structural steel on the load-carrying capacity of old riveted bridge structures. A study on the impact of corrosion losses on the resistance and, thus, the load-carrying capacity of eight chosen bridge members with riveted I-sections from three different bridge substructures is presented. The load-carrying capacity calculation is carried out using modern procedures and on the basis of the diagnosed state of the structural elements. Within the analysis of the results, the need for long-term in situ corrosion measurements, as well as the need for regular inspections on the existing bridges are also discussed.

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Existing Steel Railway Bridges Evaluation

Cited by 20 publications

References 4 publications

Strengthening of Concrete Column by Using the Wrapper Layer of Fibre Reinforced Concrete

Strengthening of Concrete Column by Using the Wrapper Layer of Fibre Reinforced Concrete

Innovative strengthening of RC columns using a layer of a fibre reinforced concrete

On the Influence of Corrosion on the Load-Carrying Capacity of Old Riveted Bridges

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