Effects of modeling strategies for a slab track on predicted ground vibrations

Malmborg, Jörgen; Persson, Peter; Persson, Kent

doi:10.1016/j.soildyn.2020.106254

Cited by 8 publications

(5 citation statements)

References 19 publications

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“…For slab tracks, differential settlement has been studied by Guo and Zhai [9], whereas work related to ground vibrations is presented for example in Ref. [10].…”

Section: Demandsmentioning

confidence: 99%

“…For this reason, and due to the fact that both concrete and steel are commonly related to large CO 2 emissions, the environmental assessment presented here is limited to an analysis of CO 2 emissions. Other environmental challenges related to slab track include noise [42] and ground vibrations [10].…”

Section: Environmental Footprintmentioning

confidence: 99%

“…Today, a range of advanced simulation models have been developed, cf. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. The development has mainly concerned design methodologies and analyses of application scenarios.…”

Section: Introductionmentioning

confidence: 99%

“…Today, a range of advanced simulation models have been developed. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] The development has mainly concerned design methodologies and analyses of application scenarios. In contrast, how the developed slab track solutions relate to demands in standards and regulations is seldom evaluated.…”

Section: Introductionmentioning

confidence: 99%

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Innovative requirements and evaluation methods for slab track design

Aggestam,

Ekberg,

Nielsen

2023

Proceedings of the Institution of Mechanical Engineers, Part F:

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With increasing train speeds and reduced time windows for maintenance work, the interest in the application of slab track technology to increase the capacity of high-speed railways has grown. Slab track may still be considered a relatively young technology, but with several different designs available on the market. Current research on slab tracks commonly focuses on improved methods. In contrast, the formulation of requirements, and evaluation towards these, are seldom investigated. In this paper, state-of-the-art simulation models are employed to illustrate and address the needs for innovative requirements in terms of structural integrity and robustness, life cycle cost (LCC) and environmental footprint of new and existing slab track designs. Based on demonstration examples, it is argued that current standards may lead to overly conservative designs inducing higher LCC and environmental footprint than necessary. Extensions of the standards in terms of LCC and environmental footprint are suggested. The conflict of interest between structural integrity and robustness, LCC and environmental footprint is discussed, and suggestions for how to optimise slab track structures are proposed.

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“…For slab tracks, differential settlement has been studied by Guo and Zhai [9], whereas work related to ground vibrations is presented for example in Ref. [10].…”

Section: Demandsmentioning

confidence: 99%

Section: Environmental Footprintmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Innovative requirements and evaluation methods for slab track design

Aggestam,

Ekberg,

Nielsen

2023

Proceedings of the Institution of Mechanical Engineers, Part F:

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“…Four different 3D slab track cross-sections and track-soil interfaces were modelled in Ref. [89] by estimating the vertical free-field response to trains moving along the track at a fixed speed. It was discovered that in-plane track-soil coupling significantly influences the vertical vibration in the free field.…”

Section: The Dynamics Of Slab Track Railwaysmentioning

confidence: 99%

A Review of Numerical Models for Slab-Asphalt Track Railways

et al. 2022

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Higher train speeds and heavier axle loads trigger elevated stresses and vibrations in the track, potentially increasing track deterioration rates and maintenance costs. Alternative track forms made of combinations of reinforced concrete and asphalt layers have been developed. A thorough understanding of the slab and asphalt tracks is needed to investigate track performance. Thus, analytical and numerical models have been developed and validated by many researchers. This paper reviews numerical models developed to investigate railway track performance. The synthesis of major finite element models is described in detail, highlighting the main components and their outputs. For slab track models, the use of a structural asphalt layer within the railway track remains an active research topic and firm conclusions on its efficacy are not yet available. It can be expected that slab track structures will also be affected by train-induced ground vibrations. There is thus a gap in the literature regarding the measurement of dynamic effects on high-speed railway lines, and further research is needed to investigate the dynamic behaviour of slab–asphalt track systems. In this review, novel solutions for mitigating the vibrations in high-speed rail are discussed and compared. The use of asphalt material in railways appears to have beneficial effects, such as increasing the bearing capacity and stiffness of the structure and improving its dynamic performance and responses, particularly under high-speed train loads.

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Structural Modelling of Reinforced Concrete Slabs Under Vertical Ground Motion

Manoukas

2021

Arab J Sci Eng

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Effects of modeling strategies for a slab track on predicted ground vibrations

Cited by 8 publications

References 19 publications

Innovative requirements and evaluation methods for slab track design

Innovative requirements and evaluation methods for slab track design

A Review of Numerical Models for Slab-Asphalt Track Railways

Structural Modelling of Reinforced Concrete Slabs Under Vertical Ground Motion

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