Novel periodic pile barriers in saturated soil and applications to propagation attenuation of shear plane waves

Zhou, Peng; Wan, Shui; Wang, Xiao; Fu, Jundong; Shen, Jiwei

doi:10.1016/j.compgeo.2022.104925

Cited by 19 publications

(8 citation statements)

References 37 publications

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“…Ûjk tsk (6) where I jk is the identity matrix and Ûjk (ω) and Tjk (ω) are boundary element matrices [11].…”

Section: D Fe-be Modelmentioning

confidence: 99%

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Design and optimization of seismic metamaterials to mitigate ground vibration

Kabirian,

Carneiro,

Reumers

et al. 2024

J. Phys.: Conf. Ser.

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This paper presents a first step towards developing an optimization method to improve the vibration mitigation performance of seismic metasurfaces. Two alternative objective functions are considered in the optimization problem. First, the vibration at a single receiver due to a harmonic source is minimized. Second, the energy dissipated by the metasurface during harmonic excitation is maximized. The dynamic properties of the resonators are the design variables. Forward modelling relies on a 3D coupled finite element-boundary element method, where the resonators are modeled as single-degree-of-freedom systems on top of square concrete foundations that are positioned on a homogeneous halfspace. A local optimization method with a gradient-based algorithm is used. In both cases, significant vibration reduction is obtained at the target frequency. When the vibration amplitude is minimized, resonators with a mass equal to the maximum allowed mass are obtained, whereas resonators with a lower mass are found when the energy dissipation is maximized. Dynamic soil-structure interaction requires the natural frequency of the resonators to be slightly higher than the excitation frequency. The optimization formulation needs to be further adapted to target vibration reduction over a larger area and in a wider frequency range.

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“…Ûjk tsk (6) where I jk is the identity matrix and Ûjk (ω) and Tjk (ω) are boundary element matrices [11].…”

Section: D Fe-be Modelmentioning

confidence: 99%

“…Zhou et al [6] present a topology optimization problem of periodic piles in saturated soil, using a genetic algorithm to maximize the frequency band gap. Colombi et al [7] investigate the impact of forests on the attenuation of Rayleigh waves in soft sedimentary soil at frequencies below 150 Hz.…”

Section: Introductionmentioning

confidence: 99%

Design and optimization of seismic metamaterials to mitigate ground vibration

Kabirian,

Carneiro,

Reumers

et al. 2024

J. Phys.: Conf. Ser.

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“…The filtering method is not adopted in tasks 1-2, whereas it is adopted in tasks 3-6. The design domains for the five tasks are discretized by a 10 10  grid according to previous studies [29,30,33]. The parameters used in the GA are as follows: .…”

Section: Validation Of the Topology Optimization Framework With A Fil...mentioning

confidence: 99%

“…Wang et al [29] performed topology optimization on the relative widths of bandgaps in periodic pile barriers, and the advantage of optimized pile barriers over traditional ones (square and circular piles) was investigated. Zhou et al [30][31][32] designed novel periodic pile barriers in dry and saturated soils by topology optimization and studied the topologies of periodic pile barriers considering initial stresses. Based on the GA, Amanat et al [33] investigated the optimal designs of periodic pile barriers that can provide wide bandgaps for plane waves in saturated soil.…”

Section: Introductionmentioning

confidence: 99%

Maximizing the decay of anti-plane shear waves in periodic pile barriers by topology optimization and its application in barrier design considering a moving load

Wang,

Wan

2023

Mechanics of Advanced Materials and Structures

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Mitigating ambient vibrations using periodic pile barriers has gained significant attention in the past decade. The width of the bandgap and the attenuation coefficient are two important factors that determine the vibration reduction capabilities of periodic pile barriers. In certain situations, significant vertical anti-plane vibrations may occur, such as those generated by subways. Therefore, the focus of this paper is to optimize the attenuation coefficients of anti-frequency range is defined to design periodic pile barriers. Finally, numerical simulations are conducted to validate the effectiveness of periodic pile barriers in mitigating vibrations when a finite number of pile rows is used.

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“…Another concept related to geotechnical engineering was the periodic piles barrier. The attenuation of the shear plane waves in saturated soil due to the presence of periodic piles barriers was verified [21][22][23], along with their filtering property under moving loads [24] and the Rayleigh wave isolation they can provide in a poroelastic half-space [25]. Regarding the field of transportation geotechnics, concepts, like meta-barrier for the attenuation of plane waves [26], periodic layered slab track for reduction in vibrations caused by rail transit [27], periodic trench barriers [28,29] and periodic piles barriers [30] for ground vibration mitigation and isolation, were developed also.…”

Section: Introductionmentioning

confidence: 97%

Meta-Material Layout for the Blast Protection of Above-Ground Steel Pipes

Kontogeorgos

Fuggini

2023

Geotechnics

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The current study investigates the capacity of the proposed meta-material layout for the blast protection of above-ground steel pipes against explosions. The philosophy of the meta-material layout’s design is described adequately, and the 1D periodic structures’ theory is adopted for the analytical prediction of the layout’s band-gaps. The special characteristics of the blast loading are explained, and specific time-related parameters are calculated. The layout is tested numerically for nine explosion scenarios of various magnitude via the finite element program ABAQUS, and the CONWEP model is selected for the simulation of the explosions. The results demonstrate a significant reduction in the maximum displacements developed on the pipe’s spring line and crown within a blast loading. This study composes an extension of the author’s previous research on buried steel pipes and surface explosion, advancing now the applicability of the meta-material layouts for the cases of above-ground steel pipes towards explosions and blast hazards. The outer goal is the investigation and the further spreading of the beneficial exploitation of meta-materials concepts for the scope of the pipelines’ effective blast protection, readdressing that this way is a major hazard for this type of structure and a gap in the current literature.

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Novel periodic pile barriers in saturated soil and applications to propagation attenuation of shear plane waves

Cited by 19 publications

References 37 publications

Design and optimization of seismic metamaterials to mitigate ground vibration

Design and optimization of seismic metamaterials to mitigate ground vibration

Maximizing the decay of anti-plane shear waves in periodic pile barriers by topology optimization and its application in barrier design considering a moving load

Meta-Material Layout for the Blast Protection of Above-Ground Steel Pipes

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