Environmental Noise Control Strategies

Garg, Naveen

doi:10.1007/978-3-030-87828-3_7

Cited by 4 publications

(2 citation statements)

References 105 publications

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“…Pu et al (Pu and Shi, 2018) investigated the effectiveness of periodic barriers and developed a better method for reducing elastic surface wave propagation and damping in soil. New methods for dramatically reducing the propagation of EWs (Sang et al, 2018;Mandal and Somala, 2020;Huang et al, 2021;Li G. et al, 2022), mitigating SWs (Jia and Shi, 2010;Colombi et al, 2020;Daradkeh et al, 2022), controlling ground vibrations (Dijckmans et al, 2015;Gao et al, 2015;Jiang et al, 2015;Schevenels and Lombaert, 2017;Thompson et al, 2019;An, 2022), utilizing seismic clocks (Sens-Schönfelder, 2008;Aravantinos-Zafiris and Sigalas, 2015;Gahlmann and Tassin, 2022), using sound sensors (Dong, 2021;Yang et al, 2021), and guiding waves (Prati, 2006;Li et al, 2021;Thomes et al, 2022) based on periodic structure theory have emerged. For attenuation purposes, locally resonant structures have been used as periodic structures in the frequency of interest to mitigate EWs (Wang M. Y. and Wang X., 2013).…”

Section: Introductionmentioning

confidence: 99%

“…The use of vegetation as an environmental solution to ground vibration problems has gained popularity (Lombi and Susini, 2009). Environmental solutions for noise and ground vibration reduction in the low frequency range are achieved through the interplay between periodic structures and ground reflections, which occurs in a roundabout way (Garg, 2022).…”

Section: Introductionmentioning

confidence: 99%

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Efficient numerical simulations on the forest barrier for seismic wave attenuation: engineering safe constructions

Al-Shami,

Huang,

Amran

et al. 2024

Front. Built Environ.

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This paper aims to elucidate the clear visibility of attenuating seismic waves (SWs) with forest trees as natural metamaterials known as forest metamaterials (FMs) arranged in a periodic pattern around the protected area. In analyzing the changeability of the FM models, five distinct cases of “metawall” configurations were considered. Numerical simulations were conducted to study the characteristics of bandgaps (BGs) and vibration modes for each model. The finite element method (FEM) was used to illustrate the generation of BGs in low frequency ranges. The commercial finite element code COMSOL Multiphysics 5.4a was adopted to carry out the numerical analysis, utilizing the sound cone method and the strain energy method. Wide BGs were generated for the Bragg scattering BGs and local resonance BGs owing to the gradual variations in tree height and the addition of a vertical load in the form of mass to simulate the tree foliage. The results were promising and confirmed the applicability of FEM based on the parametric design language ANSYS 17.2 software to apply the boundary conditions of the proposed models at frequencies below 100 Hz. The effects of the mechanical properties of the six layers of soil and the geometric parameters of FMs were studied intensively. Unit cell layouts and an engineered configuration for arranging FMs based on periodic theory to achieve significant results in controlling ground vibrations, which are valuable for protecting a large number of structures or an entire city, are recommended. Prior to construction, protecting a region and exerting control over FM characteristics are advantageous. The results exhibited the effect of the ‘trees’ upper portion (e.g., leaves, crown, and lateral bulky branches) and the gradual change in tree height on the width and position of BGs, which refers to the attenuation mechanism. Low frequency ranges of less than 100 Hz were particularly well suited for attenuating SWs with FMs. However, an engineering method for a safe city construction should be proposed on the basis of the arrangement of urban trees to allow for the shielding of SWs in specific frequency ranges.

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