Preserving Egypt's Cultural Heritage from Earthquake Damage through Vibrating Barriers (ViBa)

通过振动屏障 (ViBa) 保护埃及文化遗产免受地震破坏

• 批准号: AH/R007934/1
• 负责人: Ashraf Ayoub
• 金额: $ 26.37万
• 依托单位: City, University of London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2019
• 资助国家: 英国
• 起止时间: 2019 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=AH%2FR007934%2F1
• 关键词: Preserving; Egypt; Cultural; Heritage; Earthquake

The historical sites and monuments in Egypt are among the most important in the world and conserving this heritage is crucial. The large damage observed in hundreds of monuments after the Cairo Earthquake in 1992 unveiled the fragility of the Egyptian heritage asset to seismic hazards. More than 12 years and a huge investment were needed to reopen some of the damaged sites. Unfortunately, the current knowledge on the strengthening and mitigation of the seismic risk in heritage buildings is focused on invasive solutions that require the alteration of the historical structure and, with it, the modification of its essence. In addition, these precursor works are not focused on the specific case of the Egyptian monuments and the seismic activity in the region. As a result, the cultural asset of Egypt is threatened by the seismic hazard.This research aims to apply an innovative concept in earthquake engineering to the control of whole heritage sites without the need for alteration in the ancient structures. The idea is to introduce a vibrating barrier (ViBa) in the ground (completely external to the protected structures) that is able to interact with the soil and the earthquake in order to mitigate the seismic risk in the entire site. The project combines the expertise of academic teams in Egypt and UK towards the application of this novel idea. The team at Cairo University will implement an advanced numerical technique with Boundary Elements to solve the soil-structure interaction problem with ViBa. This barrier will be designed and tested experimentally in scaled models by the team at the University of Brighton, the original developers of the ViBa. Finally, the expertise of the team at City, University of London, in nonlinear dynamic analyses will be applied to the study of the site with the ViBa in large Finite Element models that consider the particular seismic, geotechnical and structural conditions in Egypt. The successful development of this project will result in the generation of new and fundamental knowledge on the control of structures with protection barriers, ultimately preserving the Egyptian heritage and the lives of the persons in these sites. It will also result in the development of design guidelines that will facilitate the application of the project outcomes by engineering practitioners and industry.

埃及的历史遗迹和古迹是世界上最重要的古迹之一，保护这些遗产至关重要。1992年开罗地震后，在数百座古迹中观察到的巨大破坏揭示了埃及遗产资产在地震灾害中的脆弱性。需要12年以上的时间和巨额投资才能重新开放一些受损的遗址。不幸的是，目前关于加强和减轻遗产建筑地震风险的知识主要集中在侵入性解决方案上，这些解决方案需要改变历史结构，并随之改变其本质。此外，这些前期工作并不侧重于埃及古迹和该地区地震活动的具体情况。因此，埃及的文化资产受到地震灾害的威胁。本研究旨在将地震工程中的创新概念应用于整个遗产遗址的控制，而不需要改变古老的结构。其想法是在地面（完全在受保护结构外部）引入振动屏障（ViBa），该屏障能够与土壤和地震相互作用，以减轻整个场地的地震风险。该项目结合了埃及和英国学术团队的专业知识，以应用这一新颖的想法。开罗大学的团队将采用边界元的先进数值技术来解决ViBa的土壤-结构相互作用问题。这个屏障将由ViBa的原始开发者布莱顿大学的团队在比例模型中进行设计和实验测试。最后，伦敦大学城市学院团队在非线性动力分析方面的专业知识将应用于在大型有限元模型中使用ViBa对场地进行研究，该模型考虑了埃及特定的地震、岩土工程和结构条件。该项目的成功开发将产生关于控制具有保护屏障的结构的新的基本知识，最终保护埃及遗产和这些遗址中的人的生活。它还将导致制定设计准则，以促进工程从业人员和工业界应用项目成果。

项目成果

A fully non-stationary stochastic ground motion model for the seismic analysis of the Zoser pyramid

用于佐塞尔金字塔地震分析的完全非平稳随机地震动模型

• 发表时间: 2021
• 作者: Cacciola, P.

Exploring the performances of the vibrating barriers for the seismic protection of the Zoser pyramid.

• DOI: 10.1038/s41598-022-09444-x
• 发表时间: 2022-04-01
• 期刊: Scientific reports
• 影响因子: 4.6
• 作者: Cacciola P;Shadlou M;Ayoub A;Rashed YF;Tombari A
• 通讯作者: Tombari A

NON-INVASIVE VIBRATING CONTROL OF THE ZOSER PYRAMID

ZOSER 金字塔的无创振动控制

• DOI: 10.7712/120121.8596.18909
• 发表时间: 2021
• 作者: Shadlou M