Vibration isolation using open or filled trenches

Beskos, D.E.; Dasgupta, B.; Vardoulakis, I.

doi:10.1007/bf00298637

Cited by 235 publications

(84 citation statements)

References 33 publications

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“…Secondly, when the depth of the wall is sufficiently large compared to the Rayleigh wavelength, waves impinging at normal incidence are also blocked. This reduction is also observed for open trenches [6,17,33,35] and is almost independent of the angle of incidence.…”

Section: Results For a Homogeneous Halfspacesupporting

confidence: 54%

“…In addition, interventions on the propagation path between source and receiver have the advantage that no modifications of the track are required. These measures include open and in-filled trenches [6,7], wave impeding blocks [8,9] and heavy masses on the soil's surface [1,10,11].…”

Section: Introductionmentioning

confidence: 99%

“…In the case of a homogeneous halfspace, an open trench proves effective when the depth is at least 0.6 times the Rayleigh wavelength in the soil [6,17]. The location and width of the trench are of secondary importance [17].…”

Section: Introductionmentioning

confidence: 99%

“…In general, in-filled trenches are less effective than open trenches [8,16,17,20]. While the efficacy of open trenches is mainly determined by their depth, the ratio between the bending stiffness of the barrier and the soil proves crucial for stiff wave barriers [6,7,22,23,24]. Therefore, stiff wave barriers are mostly effective at soft soil sites.…”

Section: Introductionmentioning

confidence: 99%

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Efficacy of a sheet pile wall as a wave barrier for railway induced ground vibration

Dijckmans

Ekblad

Smekal

et al. 2016

Soil Dynamics and Earthquake Engineering

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This paper investigates the effectiveness of a sheet pile wall to reduce railway induced vibration transmission by means of field measurements and numerical simulations. At Furet, Sweden, a sheet pile wall has been installed in the soil near the track to reduce train induced vibrations in houses close to the track. The depth of the sheet piles is 12 m with every fourth pile extended to 18 m. The efficacy of the wall is determined from in situ measurements of free field vibrations during train passages before and after installation of the sheet pile wall. The field test shows that the sheet pile wall reduces vibrations from 4 Hz upwards. Up till 16 − 20 Hz, the performance generally increases with frequency and typically decreases with increasing distance behind the wall. The performance is further studied by means of two-and-a-half-dimensional coupled finite element -boundary element models. The sheet pile wall is modeled as an orthotropic plate using finite elements, while the soil is modeled as a layered halfspace using boundary elements. The sheet pile wall acts as a stiff wave barrier and the efficacy is determined by the depth and the stiffness contrast with soil. The reduction of vibration levels is entirely due to the relatively high axial stiffness and plate bending stiffness with respect to the horizontal axis of the sheet pile wall; the plate bending stiffness with respect to the vertical axis is too low to affect the transmission of vibrations. Therefore, it is important to take into account the orthotropic behaviour of the sheet pile wall. It is concluded that a sheet pile wall can effectively act as a wave barrier in soft soil conditions provided that the wall is sufficiently deep.

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Section: Results For a Homogeneous Halfspacesupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Efficacy of a sheet pile wall as a wave barrier for railway induced ground vibration

Dijckmans

Ekblad

Smekal

et al. 2016

Soil Dynamics and Earthquake Engineering

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show abstract

“…Fuyuki and Matsumoto [15] studied the scattering of a Rayleigh wavelet by a rectangular open trench by using the finite difference technique. Klein et al [8], Beskos et al [16] and Dasgupta et al [17] investigated the isolation efficiency of countermeasures to incident waves or harmonic point loads by using the boundary element method. Kattis et al [1] developed a three-dimensional boundary element method and studied vibration isolation by a row of piles in the frequency domain.…”

Section: Introductionmentioning

confidence: 99%

Efficiency of Trenches on Vibration Isolation under Time Dependent Loads

Düzgün

2015

Period. Polytech. Civil Eng.

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A parametric study of wave barriers for reduction of train-induced vibrations

Yang

Hung

1997

Int. J. Numer. Meth. Engng.

139

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In this paper, a finite/infinite element scheme developed previously by the authors is employed to investigate the effectiveness of three different wave barriers, i.e., the open trench, in‐filled trench, and elastic foundation, in reducing the ground vibrations caused by the passage of trains. The mathematical model adopted herein is the two‐dimensional profile that contains the cross‐section of the railway, barrier and underlying soils, with the moving train loads simulated as a vertical harmonic line load. Concerning the effect of isolation, the geometric and material parameters of the three barriers investigated include the distance to rail, depth, width and thickness, damping ratio, shear modulus, mass density, Poisson's ratio, elastic modulus, etc. Also examined is the effectiveness of the three barriers with respect to different exciting frequencies. Conclusions are made regarding the selection of optimal parameter values for the three barriers in isolating the train‐induced ground vibrations. © 1997 John Wiley & Sons, Ltd.

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Vibration isolation using open or filled trenches

Cited by 235 publications

References 33 publications

Efficacy of a sheet pile wall as a wave barrier for railway induced ground vibration

Efficacy of a sheet pile wall as a wave barrier for railway induced ground vibration

Efficiency of Trenches on Vibration Isolation under Time Dependent Loads

A parametric study of wave barriers for reduction of train-induced vibrations

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