Searched for: collection%253Air
(1 - 20 of 59)

Pages

document
Jain, A. (author), Metrikine, A. (author), Steenbergen, M.J.M.M. (author), van Dalen, K.N. (author)
Railway transition zones (RTZs) experience higher rates of degradation compared to open tracks, which leads to increased maintenance costs and reduced availability. Despite existing literature on railway track assessment and maintenance, effective design solutions for RTZs are still limited. Therefore, a robust design criterion is required to...
journal article 2024
document
Jain, A. (author), Metrikine, A. (author), Steenbergen, M.J.M.M. (author), van Dalen, K.N. (author)
Railway transition zones present a major challenge in railway track design mainly due to abrupt jumps in stiffness and differential settlements that result from crossing stiffer structures such as bridges or culverts. Despite numerous efforts to mitigate these transition effects at both the superstructure and substructure levels, a comprehensive...
journal article 2024
document
Jain, A. (author), van Dalen, K.N. (author), Metrikine, A. (author), Faragau, Andrei B. (author), Steenbergen, M.J.M.M. (author)
ransition zones in railway tracks experience strong amplification of stress and strain fields due to the passage of train over inhomogeneity. The inhomogeneity in these zones can be attributed to changes in mechanical properties of material along the longitudinal direction of the track, and to displacement/traction discontinuities at interfaces...
conference paper 2023
document
Jain, A. (author), Metrikine, A. (author), Steenbergen, M.J.M.M. (author), van Dalen, K.N. (author)
This comprehensive study addresses the persistent issue of railway transition zone degradation, evaluating the efficacy of the most commonly used mitigation measures and proposing a novel Safe Hull-Inspired Energy Limiting Design (SHIELD) of a transition structure. Firstly, this work assesses the traditional transition structures, including...
journal article 2023
document
de Vries, R. (author), Lantsoght, E.O.L. (author), Steenbergen, Raphaël D.J.M. (author), Fennis, Sonja A.A.M. (author)
In the evaluation of existing bridges and viaducts, relying solely on a desk study is often inadequate for determining their structural reliability. Performing a proof load test provides valuable field data that offers detailed information about the structural integrity. However, the relation between the magnitude of the load and the...
journal article 2023
document
de Vries, R. (author), Lantsoght, E.O.L. (author), Steenbergen, Raphaël D.J.M. (author), Naaktgeboren, Marius (author)
Because of the aging of infrastructure, methods are explored by which the reliability of existing bridges and viaducts can be assessed. In cases in which limited information of the structure is available or its condition is of concern, proof load testing may be used to demonstrate sufficient live load carrying capacity. Proof load tests in...
journal article 2023
document
de Vries, R. (author), Lantsoght, E.O.L. (author), Steenbergen, Raphael D.J.M. (author), Naaktgeboren, Marius (author)
Due to the aging of infrastructure, methods are explored by which the reliability of existing bridges and viaducts can be assessed. In case limited information of the structure is available or its condition is of concern, proof load testing may be used to demonstrate sufficient load-carrying capacity. Proof load tests in the USA are typically...
conference paper 2023
document
Lu, Tao (author), Chen, Rong (author), Wang, Ping (author), Wu, Junwei (author), Steenbergen, M.J.M.M. (author)
This work addresses the contribution of the wavelength composition of the spectrum of the rail support stiffness profile to the expected long-term settlement. To that aim, purely harmonic stiffness variations of different wavelength are studied. The frequency-domain model with a double periodicity level previously developed by the first and...
journal article 2023
document
de Vries, R. (author), Lantsoght, E.O.L. (author), Steenbergen, R.D.J.M. (author), Fennis, S.A.A.M. (author)
In the assessment of existing infrastructure performing only a desk study is often not sufficient to determine the structural reliability of a bridge or viaduct. For concrete structures gathering field data by performing a proof load test offers detailed information about the structural performance. However, the relation between the magnitude...
conference paper 2022
document
de Oliveira Barbosa, J.M. (author), Faragau, Andrei B. (author), van Dalen, K.N. (author), Steenbergen, M.J.M.M. (author)
Locations in railway tracks where significant variations of the track properties occur are subject to increased track deterioration. To successfully mitigate this, the mechanisms leading to the increased deterioration need to be understood. To this end, this work presents a non-linear constitutive law for a lattice model able to describe the...
journal article 2022
document
Steenbergen, M.J.M.M. (author)
Different origination theories for squat-type rail defects are examined and confronted with experimental evidence. Based on the morphology of the three-dimensional defect crack pattern, with a leading crack directivity governed by the tangential stress history, it is shown that theories assuming dynamic wheel-rail interaction as a direct...
journal article 2021
document
Roubos, A.A. (author), Schweckendiek, T. (author), Brinkgreve, R.B.J. (author), Steenbergen, R. D. J. M. (author), Jonkman, Sebastiaan N. (author)
While reliability methods have already been widely adopted in civil engineering, the efficiency and robustness of finite element-based reliability assessments of quay walls are still fairly low. In this paper, the reliability indices of structural and geotechnical failure modes of two real-life quay walls are determined by coupling...
journal article 2020
document
Lu, T. (author), Metrikine, A. (author), Steenbergen, M.J.M.M. (author)
A periodically supported beam on a visco-elastic half-space is considered to model the vibration of railway tracks. The viscosity of the half-space is assumed to be of the Kelvin-Voigt type. Making use of the concept of equivalent dynamic stiffness, the reaction of the half-space to the sleepers is replaced by a system of identical spring...
journal article 2020
document
Roubos, A.A. (author), Allaix, Diego L. (author), Schweckendiek, T. (author), Steenbergen, Raphael D.J.M. (author), Jonkman, Sebastiaan N. (author)
The assessment of service-proven quay walls subject to corrosion-induced degradation is inherently a time-dependent reliability problem. Two major challenges are the modelling of corrosion and taking into account the decrease of epistemic uncertainty throughout the quay wall's service life. The main objective of this study is to examine the...
journal article 2020
document
Frangopol, Dan M. (author), Yang, David Y. (author), Lantsoght, E.O.L. (author), Steenbergen, Raphaël D.J.M. (author)
This chapter reviews concepts related to the uncertainties associated with structures and how the results of load tests can be used to reduce these uncertainties. When an existing bridge is subjected to a load test, it is known that the capacity of the cross section is at least equal to the largest load effect that was successfully resisted. As...
book chapter 2019
document
Roubos, A.A. (author), Allaix, Diego (author), Fischer, Katherina (author), Steenbergen, Raphael (author), Jonkman, Sebastiaan N. (author)
General frameworks for reliability differentiation have evolved over time and are mainly developed for buildings. However, recommendations for the safety of existing quay walls are lacking. In this study, target reliability indices for assessing existing quay walls were derived by economic optimisation and by evaluating the requirements...
journal article 2019
document
Sadri, M. (author), Lu, T. (author), Steenbergen, M.J.M.M. (author)
This study addresses the contribution of spatial variance in the railway track support stiffness to the expected long-term track degradation. Hereto, a novel frequency-domain model is developed with a double periodicity ‘layer’, capable of dealing with both sleeper periodicity and arbitrary non-uniformity in track properties. The model...
journal article 2019
document
Roubos, A.A. (author), Allaix, D. L. (author), Steenbergen, R. D.J.M. (author), Fischer, K. (author), Jonkman, Sebastiaan N. (author)
General frameworks for reliability differentiation have evolved over time and are mainly developed for new buildings. However, recommendations for existing quay walls are lacking. In this study target reliability indices for assessing existing quay walls were derived by economic optimisation and by evaluating the Life Quality Index criterion ...
conference paper 2019
document
Roubos, A.A. (author), Peters, D.J. (author), Steenbergen, Raphael D.J.M. (author)
Structural codes rely on generalised target reliability indices, which are mainly derived for buildings. It is unclear, however, whether these indices are applicable to the specific risk-profile of quay walls, jetties, and flexible dolphins. In this study, target reliability indices for marine structures were derived from various risk...
conference paper 2019
document
Messaadi, M. (author), Steenbergen, M.J.M.M. (author)
This study examines the properties of stratified surface layers on rails in service and presents a hypothesis explaining their origin. The stratified layer consists of a white etching top layer and a brown sublayer. The metallurgical composition and properties of this sublayer are found to match with that of globular bainite. The occurrence...
journal article 2018
Searched for: collection%253Air
(1 - 20 of 59)

Pages