Three-Dimensional Finite Element Simulations of Ground Vibration Generated by                 High-Speed Trains and Engineering Countermeasures

Wang, Judith C.; Zeng, Xiangwu; Mullen, Robert L.

doi:10.1177/1077546305056460

Cited by 20 publications

(17 citation statements)

References 8 publications

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“…As a result, it will cause excessive acceleration in the upper layers. is was also found by other researchers [9,36]. However, at points B and C, the vertical acceleration experienced a reverse trend compared to the point A.…”

Section: Ickness Of the Asphalt Concrete Trackbed Versus Itssupporting

confidence: 86%

“…A number of experimental and numerical studies dedicated to assigning asphalt materials in both traditional ballasted and ballastless railway tracks were carried out. For example, Wang et al [9] conducted a comparative analysis of different paving materials such as asphalt concrete, rubbermodified asphalt concrete, concrete, and traditional ballast material in a ballasted track structure. e study concluded that rubber-modified asphalt concrete was the most effective material in reducing a ground-borne vibration produced by trains.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of Vertical Response of Asphalt Trackbed Concrete in Railway Substructure to External Loads

Yusupov

Qiu

Sharipov

et al. 2020

Advances in Materials Science and Engineering

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Optimizing the dynamic responses of a slab track system is a key aspect to improve the quality of a railway track structure. In this paper, numerical modelling and simulation of vertical dynamics of the railway track structure engaging the asphalt concrete in substructures were carried out. us, a 3D finite element (FE) model was developed. e developed model was validated by comparing its outputs, that is, acceleration with the measured ones from realistic experimental data. e good agreement between the simulated and measured data which resulted from the validation confirmed that the proposed model has a capability of simulating the complex dynamic performances of the train-track-ground system under different loading conditions. Analyses of the determined results from the simulation model performances revealed that three specific factors, which were the speed of the train, the temperature, and thickness of the asphalt concrete trackbed, mainly influenced the dynamic behavior of the railway structure. ereby, those factors were taken into consideration while evaluating the dynamic responses and designing the asphalt concrete trackbed in railway substructures.

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Section: Ickness Of the Asphalt Concrete Trackbed Versus Itssupporting

confidence: 86%

Section: Introductionmentioning

confidence: 99%

Characterization of Vertical Response of Asphalt Trackbed Concrete in Railway Substructure to External Loads

Yusupov

Qiu

Sharipov

et al. 2020

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…e influence of road unevenness on the free field vibrations was investigated. Wang et al [14] tested four trackbed materials for their relative vibration attenuation capacities and studied the effect of different speed and weight of the passing train on the performance of the paving materials. eir purpose is to reduce the adverse effects of pavement vibration on the surrounding structures and vehicles, rather than to analyze the pavement vibration signals for evaluating the pavement service condition.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Pavement Vibration Response for Roadway Service Condition Evaluation

Wang

2018

Advances in Civil Engineering

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Dynamic response of pavement provides service condition information and helps with damage prediction, while limited research is available with the simulation of pavement vibration response for evaluating roadway service condition. This paper presents a numerical model for the analysis of the pavement vibration due to the dynamic load created by a passing vehicle. A quarter vehicle model was used for the determination of the vehicle moving load. Both random and spatial characteristics of the load were considered. The random nonuniform moving load was then introduced in a 3D finite element model for the determination of the traffic-induced pavement vibration. The validated numerical model was used to assess the effects of dynamic load, material properties, and pavement structures on pavement vibration response. Numerical analyses showed that the vibration modes changed considerably for the different roadway service conditions. The vibration signals reflect the level of road roughness, the stiffness of the pavement materials, and the integrity of pavement structure. The acceleration extrema, the time-domain signal waveform, the frequency distribution, and the sum of squares of Fourier amplitude can be potential indexes for evaluating roadway service condition. This provides recommendations for the application of pavement vibration response in early-warning and timely maintenance of road.

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“…Three different sub-ballast layers with the same thickness, equal to 200, made up respectively of concrete, asphalt and rubber asphalt were compared by Wang et al [17]. These researchers by means of a 3D FEM model calculated the RMS and the peak values of acceleration in comparison with a ballasted rail track without sub-ballast in several points at different distances from the rail track.…”

mentioning

confidence: 99%

Experimental Survey on Dry Asphalt Rubber Concrete for Sub-ballast Layers

Mino¹,

Liberto²

2012

JCEA

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This paper presents the results of an experimental survey on the potential application of DARC (dry asphalt rubber concrete) in rail superstructure, within sub-ballast layers by measuring its damping and mechanical properties. Based on the environmental friendly point of view the DARC has the significant advantage as the backfill material of sub-ballast layer because the rubber comes from the waste tires of truck and its usage can results a significant recycling of non-biodegradable wastes. After a preliminary mix-design of several DARCs, with different rubber content that confirmed by using the Marshall test, the stiffness modulus and damping ratio both of a standard bituminous mixture and of dry asphalt rubber concrete with a rubber content equal to 1.5% were determined using the four points bending device. The experimental results were compared and a numerical analysis by means of a 2D lumped mass model was developed in order to evaluate the different performance within the rail superstructure in terms both of the deflection and of the pressure on sub-grade. Both the results on the mechanical and dissipative properties of the DARC and the mechanical behavior of the correlate rail superstructure encourage the authors to continue the research on the application of such material for sub-ballast layers.

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Three-Dimensional Finite Element Simulations of Ground Vibration Generated by High-Speed Trains and Engineering Countermeasures

Cited by 20 publications

References 8 publications

Characterization of Vertical Response of Asphalt Trackbed Concrete in Railway Substructure to External Loads

Characterization of Vertical Response of Asphalt Trackbed Concrete in Railway Substructure to External Loads

Investigating the Pavement Vibration Response for Roadway Service Condition Evaluation

Experimental Survey on Dry Asphalt Rubber Concrete for Sub-ballast Layers

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