Dynamic calibration of slab track models for railway applications using full-scale testing

Sainz-Aja, José; Pombo, João; Tholken, D.; Carrascal, I.; Polanco, Juan A.; Ferreño, Diego; Casado, Julio; Diego, Soraya; Pérez, Alejandro; Filho, J. E. Abdala; Esen, Ahmet; Čebašek, Tina Marolt; Laghrouche, Omar; Woodward, Peter Keith

doi:10.1016/j.compstruc.2019.106180

Cited by 42 publications

(28 citation statements)

References 57 publications

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“…Concrete fatigue behaviour has not been extensively studied, partly because of the difficulty, cost and time required. Concrete elements subjected to this type of load include railway superstructures, sleepers or slab tracks [9], rail and road bridges [10], offshore structures subject to variable wind and tidal loads [10,11] and/or wind generators [12]. Khosravani et al [13] have defined a procedure for analyzing ultra-high performance concrete's response to impacts.…”

Section: Introductionmentioning

confidence: 99%

High-Frequency Fatigue Testing of Recycled Aggregate Concrete

et al. 2019

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Concrete fatigue behaviour has not been extensively studied, in part because of the difficulty and cost. Some concrete elements subjected to this type of load include the railway superstructure of sleepers or slab track, bridges for both road and rail traffic and the foundations of wind turbine towers or offshore structures. In order to address fatigue problems, a methodology was proposed that reduces the lengthy testing time and high cost by increasing the test frequency up to the resonance frequency of the set formed by the specimen and the test machine. After comparing this test method with conventional frequency tests, it was found that tests performed at a high frequency (90 ± 5 Hz) were more conservative than those performed at a moderate frequency (10 Hz); this effect was magnified in those concretes with recycled aggregates coming from crushed concrete (RC-S). In addition, it was found that the resonance frequency of the specimen–test machine set was a parameter capable of identifying whether the specimen was close to failure.

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Section: Introductionmentioning

confidence: 99%

High-Frequency Fatigue Testing of Recycled Aggregate Concrete

et al. 2019

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“…In this work, post-processing tasks were carried out to facilitate the interpretation of the results obtained. Specifically, a one degree Fourier regression [54][55][56] was performed to enable the fitting of the data to a harmonic function (2) [56]:…”

Section: Post-processing Experimental Resultsmentioning

confidence: 99%

Resonance Fatigue Behaviour of Concretes with Recycled Cement and Aggregate

et al. 2021

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The huge increase in production of construction and demolition waste (CDW) worldwide is leading to the valorisation of as recycled aggregates. One of the most promising alternatives is its use as a recycled aggregate in the manufacture of structural concrete, which motivates the study of the dynamic behaviour of these materials in order to ensure their suitability for use in elements subjected to dynamic loads. This work evaluated the resonant compressive fatigue behaviour of structural concretes with 25% or 50% recycled mixed aggregates, either individually or in combination with 25% recycled cement of clay-based materials both from CDW. All mixes were subjected to compressive fatigue tests using the accelerated Locati method. Regarding the fatigue limit, the results showed that for all mixes, it was between 30% and 45% of the compressive strength. In addition, a correlation was also found between the resonance frequency of the test and the deformation suffered by the specimen. This correlation enabled the estimation of the fatigue limit through a more stable parameter than the strain measured by strain gauges, namely, the resonance frequency. In addition, it was found that the resonance frequency of the test changed as the specimen damage increased. This observation enabled the estimation of the fatigue limit through a more stable parameter than the strain measured by strain gauges, namely, the resonance frequency.

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“…3D finite element model and laboratory tests were proposed by other investigators to analyze the dynamic behavior of the track bed [ 104 , 105 ]. It has to be mentioned that, despite having some differences, the in situ experiments usually validated the acceptance of the dynamic and numerical modeling [ 106 , 107 ]. Based on a finite element model, the use of an asphalt layer improves the sleeper support [ 108 ].…”

Section: Review Of Case Studiesmentioning

confidence: 99%

A Review of Different Aspects of Applying Asphalt and Bituminous Mixes under a Railway Track

et al. 2020

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Asphalt is a common material that is used extensively for roadways. Furthermore, bituminous mixes have been used in railways, both as asphalt and as mortar. Different agencies and research institutes have investigated and suggested various applications. These studies indicate the benefits of bituminous material under railways, such as improving a substructure’s stiffness and bearing capacity; enhancing its dynamic characteristics and response, especially under high-speed train loads; waterproofing the subgrade; protecting the top layers against fine contamination. These potential applications can improve the overall track structure performance and lead to minimizing settlement under heavy loads. They can also guarantee an appropriate response under high-speed loads, especially in comparison to a rigid slab track. This review paper documents the literature related to the utilization of asphalt and bituminous mixes in railway tracks. This paper presents a critical review of the research in the application of asphalt and bituminous mixes in railway tracks. Additionally, this paper reviews the design and construction recommendations and procedures for asphalt and bituminous mixes in railway tracks as practiced in different countries. This paper also provides case studies of projects where asphalt and bituminous mixes have been utilized in railway tracks. It is anticipated that this review paper will facilitate (1) the exchange of ideas and innovations in the area of the design and construction of railway tracks and (2) the development of unified standards for the design and construction of railway tracks with asphalt and bituminous mixtures.

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Dynamic calibration of slab track models for railway applications using full-scale testing

Cited by 42 publications

References 57 publications

High-Frequency Fatigue Testing of Recycled Aggregate Concrete

High-Frequency Fatigue Testing of Recycled Aggregate Concrete

Resonance Fatigue Behaviour of Concretes with Recycled Cement and Aggregate

A Review of Different Aspects of Applying Asphalt and Bituminous Mixes under a Railway Track

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