Effects of open trench siding on vibration-screening effectiveness using the two-dimensional boundary element method

Tsai, Pei-Hsun; Chang, Tzyy-Shiou

doi:10.1016/j.soildyn.2008.09.005

Cited by 38 publications

(16 citation statements)

References 9 publications

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“…Hence, these problems are defined by their geometry: d , w , l , h and t ; by the properties of their regions: poroelastic soil (φ, ρ f , ρ s , µ s , λ s , ξ s , Q, R, ρ a , b) and wall (ρ b , E b , ν b , ξ b ); and by the frequency ω. For elastic soils, the open trench and the simple wall problems have been extensively studied, whereas the open trench-wall system has been rarely studied [34]. In these cases, each problem is easily nondimensionalized to a small set of parameters of general applicability.…”

Section: Wave Barriers In Poroelastic Soilsmentioning

confidence: 99%

“…The vibration isolation produced by rows of piles have been studied by Avilés et al [4] analytically, and by Kattis et al [25] using a three-dimensional BEM model. The open trench-wall systems have been rarely studied, to the authors' knowledge only Tsai et al [34] using a two-dimensional multidomain BEM model. When compared with elastic soils, much less works dealing with the efficiency of wave barriers in poroelastic soils exist.…”

Section: Introductionmentioning

confidence: 99%

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Two-dimensional numerical approach for the vibration isolation analysis of thin walled wave barriers in poroelastic soils

Bordón

Aznárez

Maeso

2016

Computers and Geotechnics

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Section: Wave Barriers In Poroelastic Soilsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Two-dimensional numerical approach for the vibration isolation analysis of thin walled wave barriers in poroelastic soils

Bordón

Aznárez

Maeso

2016

Computers and Geotechnics

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“…The practical application of vertical open trenches is limited to shallow depths, however, for stability reasons and the presence of groundwater. More practical realisations of trenches with sloping sides or a retaining structure have been investigated as well [18,21]. These studies indicate that the retaining structure can significantly reduce the efficacy.…”

Section: Introductionmentioning

confidence: 99%

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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“…Hwang and Tu (2006) experimentally studied the effectiveness of several shallow open trenches in the context of ground vibration caused by dynamic compaction. Tsai and Chang (2009) investigated the effects of open trench sidings (with sheet piles and diaphragm walls on both sides of an open trench) on vibration screening effectiveness using 2-D BEM. This work, although, seems out of context, yet provides a basis of comparison since all the geometric features are made dimensionless with respect to the Rayleigh wavelength and few specifi c cases are studied without sidings.…”

Section: Introductionmentioning

confidence: 99%

Analysis and design of open trench barriers in screening steady-state surface vibrations

Saikia

Das

2014

Earthq. Eng. Eng. Vib.

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The problem of vibration isolation by rectangular open trenches in a plane strain context is numerically studied using a fi nite element code, PLAXIS. The soil media is assumed to be linear elastic, isotropic, and homogeneous subjected to a vertical harmonic load producing steady-state vibration. The present model is validated by comparing it with previously published works. The key geometrical features of a trench, i.e., its depth, width, and distance from the source of excitation, are normalized with respect to the Rayleigh wavelength. The attenuation of vertical and horizontal components of vibration is studied for various trench dimensions against trench locations varied from an active to a passive case. Results are depicted in non-dimensional forms and conclusions are drawn regarding the effects of geometrical parameters in attenuating vertical and horizontal vibration components. The screening effi ciency is primarily governed by the normalized depth of the barrier. The effect of width has little signifi cance except in some specifi c cases. Simplifi ed regression models are developed to estimate average amplitude reduction factors. The models applicable to vertical vibration cases are found to be in excellent agreement with previously published results.

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Effects of open trench siding on vibration-screening effectiveness using the two-dimensional boundary element method

Cited by 38 publications

References 9 publications

Two-dimensional numerical approach for the vibration isolation analysis of thin walled wave barriers in poroelastic soils

Two-dimensional numerical approach for the vibration isolation analysis of thin walled wave barriers in poroelastic soils

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

Analysis and design of open trench barriers in screening steady-state surface vibrations

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