Experimental and simulation study on rail admittance characteristics in turnout area of urban rail transit

Abstract

In order to study the dynamic performance of rail-track turnout more widely and deeply, this paper established a 3D refined model of turnout and calculated the condensation characteristics of rail-track through the application of harmonic load sweep frequency analysis. The relevant calculation results are verified by field experiments. It was found that the rail pin-pinned resonance mode in the stock rail and switch rail close position, and jacking block and heel block would be suppressed. The change of switch rail profile caused gradual variation of switch rail admittance characteristic, which showed as the low-frequency original point admittance gradually decreases in the frequency-spatial distribution. The special fastener system of guardrail has limited lateral constraint on the guide rail, resulting in the lateral pin-pinned resonance mode of the guide rail not being significantly observed in the measured results. At the same time, the variation of the vertical bending first-order frequency of the rail was analyzed to analyze the change of the vertical support stiffness in the switch zone. The reliability and shortage of the three-dimensional (3D) track model in the switch zone were also analyzed by comparing the experimental data with the model calculation results.

Keywords

Turnout track support stiffness rail admittance characteristics field tests finite element model

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References

Blanco-Saura

Velarte-González

Ribes-Llario

, et al. (2018) Study of the dynamic vehicle-track interaction in a railway turnout. Multibody System Dynamics 43(1): 21–36.

Chen

(2008) Theory and Application of High-Speed Turnout Track Stiffness. PhD Thesis, Southwest Jiaotong University, Chengdu.

Chen

Wang

(2006) Distribution and homogenization of ballastless turnout track stiffness. Journal of Southwest Jiaotong University 4: 447–451.

Chen

Feng

Liu

, et al. (2021) Experimental study on the characteristics of train-induced vibration in a new structure of metro depot. Environmental Science and Pollution Research International 28(30): 41407–41422.

Connolly

Kouroussis

Woodward

, et al. (2014) Scoping prediction of re-radiated ground-borne noise and vibration near high speed rail lines with variable soils. Soil Dynamics and Earthquake Engineering 66: 78–88.

Connolly

Kouroussis

Laghrouche

, et al. (2015) Benchmarking railway vibrations–Track, vehicle, ground and building effects. Construction and Building Materials 92: 64–81.

Dittmar

Ohland

(2004) The New Transit Town: Best Practices in Transit-Oriented Development. Island Press.

Grossoni

Bezin

Neves

(2018) Optimisation of support stiffness at railway crossings. Vehicle System Dynamics 56(7): 1072–1096.

Ibraeva

Correia

GHA

Silva

, et al. (2020) Transit-oriented development: a review of research achievements and challenges. Transportation Research Part A: Policy and Practice 132: 110–130.

10.

Jia

Guo

Liu

, et al. (2009) Dynamic influence of train vibration load on ancient buildings. Journal of Beijing Jiaotong University 33(01): 118–122.

11.

Kattis

Polyzos

Beskos

(1999) Vibration isolation by a row of piles using a 3-D frequency domain BEM. International Journal for Numerical Methods in Engineering 46(5): 713–728.

12.

Kisilowski

Kowalik

(2021) Mechanical wear contact between the wheel and rail on a turnout with variable stiffness. Energies 14(22): 7520.

13.

Kouroussis

Verlinden

Conti

(2011) Free field vibrations caused by high-speed lines: measurement and time domain simulation. Soil Dynamics and Earthquake Engineering 31(4): 692–707.

14.

Kouroussis

Connolly

Alexandrou

, et al. (2015) The effect of railway local irregularities on ground vibration. Transportation Research Part D: Transport and Environment 39: 17–30.

15.

Lopes

Alves Costa

Calçada

, et al. (2014) Influence of soil stiffness on building vibrations due to railway traffic in tunnels: numerical study. Computers and Geotechnics 61: 277–291.

16.

(2012) Research on sensitivity-based environmental impact prediction and dynamic evaluation system of subway train vibration. PhD Thesis, Beijing Jiaotong University, Beijing.

17.

Markine

Steenbergen

Shevtsov

(2011) Combatting RCF on switch points by tuning elastic track properties. Wear 271(1–2): 158–167.

18.

Pålsson

Nielsen

JCO

(2015) Dynamic vehicle–track interaction in switches and crossings and the influence of rail pad stiffness–field measurements and validation of a simulation model. Vehicle System Dynamics 53(6): 734–755.

19.

Sheng

Jones

CJC

Thompson

(2004) A theoretical model for ground vibration from trains generated by vertical track irregularities. Journal of Sound and Vibration 272(3–5): 937–965.

20.

Smith

Ögren

Ageborg Morsing

, et al. (2019) Effects of ground-borne noise from railway tunnels on sleep: a polysomnographic study. Building and Environment 149: 288–296.

21.

Verbraken

Lombaert

Degrande

(2011) Verification of an empirical prediction method for railway induced vibrations by means of numerical simulations. Journal of Sound and Vibration 330(8): 1692–1703.

22.

Wan

Markine

Shevtsov

(2016) Optimisation of the elastic track properties of turnout crossings. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit 230(2): 360–373.

23.

Wang

Liu

Kou

(1999) Discussion on the longitudinal distribution law of turnout vertical stiffness along the road. Journal of Southwest Jiaotong University 2: 18–22.

24.

With

Bodare

(2007) Prediction of train-induced vibrations inside buildings using transfer functions. Soil Dynamics and Earthquake Engineering 27(2): 93–98.

25.

Wang

, et al. (2016) Stiffness characteristics of high-speed railway turnout and the effect on the dynamic train-turnout interaction. Shock and Vibration.

26.

Zhai

Song

(2010) Prediction of high-speed train induced ground vibration based on train-track-ground system model. Earthquake Engineering and Engineering Vibration 9(4): 545–554.

27.

Zhao

(2014) Research on Key Technologies of Environmental Vibration and Noise in Elevated Rail Transit. PhD Thesis, Southwest Jiaotong University, Chengdu.