SH wave propagation in a periodic cement-based piezoelectric layered barrier

Jiang, Haozhe; Cai, Zhan-hua; Yuan, Lili; Ma, Tingfeng; Du, Jianke; Wang, Ji

doi:10.1080/15376494.2021.1942598

Cited by 7 publications

(1 citation statement)

References 36 publications

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“…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. Recently, machine learning methods were exploited for the more accurate design of meta-materials concepts, including neural networks for a more precise calculation of the attenuation zones [31] and deep learning for the topology design of periodic barriers [32].…”

Section: Introductionmentioning

confidence: 96%

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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