3D coupled scaled boundary finite-element/finite-element analysis of ground vibrations induced by underground train movement

Yaseri, Alireza; Bazyar, Mohammad Hossein; Hataf, Nader

doi:10.1016/j.compgeo.2014.03.013

Cited by 59 publications

(17 citation statements)

References 22 publications

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“…In the theoretical analyses, the ground vibrations induced by moving train loads were mainly analyzed through trackÀ foundation models [1][2][3][4]. In the numerical simulation, the finite element method (FEM) [5][6][7][8], the boundary element method (BEM) [9,10], the combined FEMÀ BEM [11][12][13][14][15], and the combined FEMÀ IFEM (infinite element method) [16,17] were used to investigate the environmental vibration due to railway traffic. In the authors' previous study [18], highspeed train induced ground vibration was predicted with a trainÀ trackÀ ground system model, in which the vehicleÀ track coupled dynamics model [19] was applied to obtain the wheelÀrail dynamic forces and these forces were then used as the exciting loads inputted to the trackÀ ground system.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation into ground vibrations induced by very high speed trains on a non-ballasted track

Zhai

Wei

Song

et al. 2015

Soil Dynamics and Earthquake Engineering

199

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a b s t r a c tA field measurement of ground vibration was performed on the Beijing À Shanghai high-speed railway in China. In this paper, the experimental results of vertical ground vibration accelerations induced by very high speed trains running over a non-ballasted track on embankment with speeds from 300 to 410 km/h are reported and analyzed in detail for the first time. Characteristics of ground vibration accelerations in both time and frequency domains are analyzed based on the test data. It is shown that the periodic exciting action of high-speed train bogies can be identified in time histories of vertical accelerations of the ground within the range of 50 m from the track centerline. The first dominant sensitive frequency of the ground vibration acceleration results from the wheelbase of the bogie, and the center distance of two neighboring cars plays an important role in the significant frequencies of the ground vibration acceleration. Variations of time-response peak value and frequency-weighted vertical acceleration level of ground vibration in relation with train speed as well as the distance from the track centerline are also investigated. Results show that the time-domain peak value of ground vibration acceleration exhibits an approximately linear upward tendency with the increase of train speed. With the increasing distance from the track centerline, the frequency-weighted vertical acceleration level of the ground vibration attenuates more slowly than the time-domain peak value of the ground vibration acceleration does. Severe impact of high-speed railway ground vibration on human body comfort on the ground occurs at the speed of 380-400 km/h. The results given in the paper are also valuable for validating the numerical prediction of train induced ground vibrations.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation into ground vibrations induced by very high speed trains on a non-ballasted track

Zhai

Wei

Song

et al. 2015

Soil Dynamics and Earthquake Engineering

199

View full text Add to dashboard Cite

show abstract

“…The first one is equivalent finite element approach in which the boundary element region is treated as a large finite element and its stiffness is computed and assembled into the global stiffness matrix. The second one is equivalent boundary element approach in which the finite element region are treated as an equivalent boundary element region and their stiffness matrix is determined and assembled [12,24]. The choice of coupling method depends mainly on the software available for the implementation, i.e., if boundary element capabilities are to be added to a finite element program, or finite element capabilities to a boundary element one.…”

Section: Coupling Finite-boundary Element Methodsmentioning

confidence: 99%

“…A three-dimensional finite element model with viscous boundary was developed to investigate the seismic response of the cantilever wall by Cakir [23]. Yaseri et al [24] studied the application of the scaled boundary finite-element method to the threedimensional analysis of ground vibrations induced by underground trains. The surrounding medium around the tunnel was simulated by the scaled boundary finite element method.…”

Section: Introductionmentioning

confidence: 99%

The coupling finite-boundary element method for soil-structure interaction under spatially varying ground motion

Tonyali¹,

Ateş²

2018

JSEAM

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In this study, a coupled model based on the boundary element and the finite element methods is used to analyze the dynamic responses of two-dimensional model resting on layered soil medium under spatially varying ground motion effects. The dynamic response of the soil-structure systems is obtained in the frequency domain. The results of the finite element and the coupling finite-boundary element models are compared with each local soil conditions. In the seismic analysis of the system, the substructure method is employed. In the standard finite element model, both the structure and semi-infinitive soil medium are modeled by the finite elements, however, in the coupling finite-boundary element model, the structure and the soil medium are modeled respectively by the finite and boundary elements, both. In the last method, the special features and advantages of two methodologies are considered. In the coupling of finite-boundary element method, the equivalent finite element approach is used in which the boundary element region is transformed as an equivalent finite element and the final system is solved as a stiffness problem. Results of the study show that the coupling finite-boundary element method can provide realistic and effective modeling of soil-structure interaction problems as compared with standard finite element method results.

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“…1. The rail with UIC60 sectional properties [16] was modeled by Timoshenko beam elements [17] in a 2-dimensional plane. The beam elements for the rail were completely tied to the surface of the solid elements representing the 0.65 m-spaced discrete sleepers.…”

Section: Finite Element Model Of the Track And Vehiclementioning

confidence: 99%

Dynamic subsoil responses of a stiff concrete slab track subjected to various train speeds: A critical velocity perspective

Nsabimana

Jung

2015

Computers and Geotechnics

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3D coupled scaled boundary finite-element/finite-element analysis of ground vibrations induced by underground train movement

Cited by 59 publications

References 22 publications

Experimental investigation into ground vibrations induced by very high speed trains on a non-ballasted track

Experimental investigation into ground vibrations induced by very high speed trains on a non-ballasted track

The coupling finite-boundary element method for soil-structure interaction under spatially varying ground motion

Dynamic subsoil responses of a stiff concrete slab track subjected to various train speeds: A critical velocity perspective

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