The present paper focuses on the numerical modeling of a weigh-in-motion system developed with the purpose of assessing the static loads imposed by the train onto the track infrastructure. Weigh-in-motion systems would be useful in overcoming the disadvantages typical of the conventional static weighing such as costs and traffic management. However, contrary to the conventional static weighing, weigh-in-motion systems do not allow a direct measurement of the static load since the train–track dynamic interaction gives rise to dynamic loads that are added to the static ones. This study investigates how train speed and track unevenness affect the loads assessed by the weigh-in-motion system. In order to achieve that goal, a comprehensive statistical study was performed based on an extensive amount of calculations. Finally, based on the conclusions and trend identified through the comprehensive parametric study, an approach is proposed to correct the direct result given by the weigh-in-motion system in order to obtain an estimation of the static load.
UhlT. The inverse identification problem and its technical application. Arch Appl Mech2007; 77: 325–337.
7.
Alves CostaPCalçadaRSilva CardosoA. Track–ground vibrations induced by railway traffic: in-situ measurements and validation of a 2.5D FEM-BEM model. Soil Dyn Earthq Eng2012; 32: 111–128.
8.
ColaçoACostaPConnollyD. The influence of train properties on railway ground vibrations. Struct Infrastruct Eng2016; 12: 517–534.
9.
dos SantosNCColaçoAAlves CostaP, et al.Experimental analysis of track-ground vibrations on a stretch of the Portuguese railway network. Soil Dyn Earthq Eng2016; 90: 358–380.
10.
IwnickiS. Handbook of railway vehicle dynamics, Abingdon: Taylor and Francis, 2006.
11.
KisilowskiJKnotheK. Advanced railway vehicle-system dynamics, Warsaw: Wydawnictwa Naukowo-Techniczne, 1991.
12.
MeliEPugiL. Preliminary development, simulation and validation of a weigh in motion system for railway vehicles. Meccanica2013; 48: 2541–2565.
13.
AllottaBD'AdamioPMeliE, et al.Development of a new time domain-based algorithm for train detection and axle counting. Vehicle Syst Dyn2015; 53: 1850–1875.
14.
O'BrienEJZnidaricADempseyAT. Comparison of two independently developed bridge weigh-in-motion systems. Int J Heavy Vehicle Syst1999; 6: 147–161.
15.
AllottaBD'AdamioPMariniL, et al.A new strategy for dynamic weighing in motion of railway vehicles. IEEE Trans Intell Transp Syst2015; 16: 3520–3533.
16.
Bracciali A, Ciuffi R, Piccioli F, et al. Progetto e validazione di un sensore estensimetrico multifunzionale per il binario ferroviario. In: Proceedings of XXX congresso AIAS, Alghero, Italy, 2001.
17.
DelpreteCRossoC. An easy instrument and a methodology for the monitoring and the diagnosis of a rail. Mech Syst Signal Process2009; 23: 940–956.
18.
SekułaKKołakowskiP. Piezo-based weigh-in-motion system for the railway transport. Struct Control Health Monit2012; 19: 199–215.
19.
TagMaster AB Headquarters. Official site of application driven technology company, http://www.tagmaster.com (2012).
DahlbergT. Some rail road settlement models – a critical review. J Rail Rapid Transit2001; 215: 289–300.
22.
DietermanHAMetrikineA. The equivalent stiffness of a half-space interacting with a beam. Critical velocities of a moving load along the beam. Eur J Mech A/Solids1996; 15: 67–90.
23.
ShengXJonesCThompsonD. A theoretical study on the influence of the track on train-induced ground vibration. J Sound Vib2004; 272: 909–936.
24.
SteenbergenMMetrikineA. The effect of the interface conditions on the dynamic response of a beam on a half-space to a moving load. Eur J Mech A/Solids2007; 26: 33–54.
25.
Man A. DYNATRACK: a survey of dynamic railway track properties and their quality. Delft: Technische Universiteit Delft, 2002.
26.
Germonpré M, François S, Degrande G, et al. A periodic track model for the prediction of ground borne vibration due to parametric excitation. In: Civil-comp proceedings, 2016, p.110.
27.
Costa PMBA. Vibrações do sistema via-maciço induzidas por tráfego ferroviário. Modelação numérica e validação experimental. Porto: University of Porto, 2011.
28.
DietermanHAMetrikineA. Steady-state displacements of a beam on an elastic half-space due to a uniformly moving constant load. Eur J Mech A/Solids1997; 16: 295–306.
29.
AuerschL. Dynamic interaction of various beams with the underlying soil – finite and infinite, half-space and Winkler models. Eur J Mech A/Solids2008; 27: 933–958.
30.
Ribeiro N, Vale C, Costa P, et al. Estimativa dos parametros de rigidez e de amortecimento para modelos simplificados de vias ferreas nao balastradas. In: Congresso de metodos numericos em engenharia, Coimbra, Portugal, 2011.
31.
IgelandAIliasH. Rail head corrugation growth predictions based on non-linear high frequency vehicle/track interaction. Wear1997; 213: 90–97.
32.
ShengXJonesCThompsonD. A comparison of a theoretical model for quasi-statically and dynamically induced environmental vibration from trains with measurements. J Sound Vib2003; 267: 621–635.
33.
WuTThompsonD. Vibration analysis of railway track with multiple wheels on the rail. J Sound Vib2001; 239: 69–97.
34.
ZhaiWCaiZ. Dynamic Interaction between a lumped mass vehicle and a discretely supported continuous rail track. Comput Struct1997; 63: 987–997.
35.
European Standard. Railway applications - Track - Rail - Part 1: Vignole railway rails 46 kg/m and above, prEN 13674-1, final draf. Brussels, 2002.
36.
HertzH. Ueber die Berührung fester elastischer Körper [On the contact of elastic solids]. J Reine Angew Math1882; 92: 156–171. .
37.
FriesRHCoffeyBM. A state-space approach to the synthesis of random vertical and crosslevel rail irregularities. J Dyn Syst Meas Control1990; 112: 83–87.
38.
HamidAYangTL. Analytical description of track-geometry variations. Transp Res Rec1981; 838: 19–26.
