Exploring the performances of the vibrating barriers for the seismic protection of the Zoser pyramid.
Exploring the performances of the vibrating barriers for the seismic protection of the Zoser pyramid.
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DOI：
10.1038/s41598-022-09444-x
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发表时间：
2022-04-01
影响因子：
4.6
通讯作者：
Tombari A
中科院分区：
文献类型：
--
作者：
Cacciola P;Shadlou M;Ayoub A;Rashed YF;Tombari A
在这篇文章中，我们的目的是研究使用振动屏障(VIBA)作为一种潜在的策略来减轻地震作用对佐瑟金字塔的影响。振动屏障是一种埋藏在土壤中的结构，它能够吸收地面运动产生的很大一部分动力能量。其工作原理是利用柔性半无限空间上振动结构之间的动力相互作用，即结构-土-结构相互作用。本文给出了佐色尔金字塔及其周围土体在随机地震动作用下的可靠数值模拟，代表了萨卡拉地区的地震活动性。由于独特的结构形式，在此通过自组织过程对VIBA进行优化，以最小化用作综合性能参数的响应应变能谱密度。文中对VIBA的各种布局进行了考虑和介绍。通过对可控震源-土壤-金字塔系统有限元模型的数值模拟和室内试验，对可控震源的有效性进行了评估。蒙特卡罗相关研究的结果表明，金字塔内的应力明显降低，表明这种新的策略在保护历史建筑免受地震地面运动影响方面是可行的。在金字塔及其周围1：500凝胶模型上的实验结果突出了所提出的方法的有效性和有效性。
In this paper we aim to investigate the use of the Vibrating Barrier (ViBa) as a potential strategy to mitigate the effects of the seismic action on the Zoser Pyramid. The Vibrating Barrier is a structure buried in the soil that is able to absorb a significant portion of the dynamic energy arising from the ground motion. The working principle exploits the dynamic interaction among vibrating structures resting on a compliant semi-infinite space, namely the structure–soil–structure interaction. A reliable numerical simulation of the Zoser Pyramid and the surrounding soil undergoing stochastic ground motion excitations representing the seismicity in Saqqara is presented. Due to the unique structural form, the ViBa is herein optimized through an ad-hoc procedure to minimize a response strain energy spectral density used as a synthetic performance parameter. Various layouts of the ViBa have been considered and presented in the paper. The efficiency of the ViBa is assessed by numerical simulation of the finite element model of the ViBa-Soil-Pyramid system and by laboratory testing. Results from a pertinent Monte Carlo study show an evident reduction of the stresses in the Pyramid manifesting the feasibility of this novel strategy to protect historic structures from earthquake-induced ground motion. Experimental results on a 1:500 gelatine model of the pyramid and the surrounding area highlighted the efficiency and efficacy of the proposed approach.
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影响因子：
2
作者：
Boore, DM
通讯作者：
Boore, DM
影响因子：
8.4
作者：
Tombari, A.;Espinosa, M. Garcia;Cacciola, P.
通讯作者：
Cacciola, P.
影响因子：
4
作者：
Herbut, Aneta
通讯作者：
Herbut, Aneta
影响因子：
1.6
作者：
Miniaci, Marco;Kherraz, Nesrine;Pugno, Nicola Maria
通讯作者：
Pugno, Nicola Maria
影响因子：
3.7
作者：
Herbut A
通讯作者：
Herbut A