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首页> 外文期刊>Bulletin of earthquake engineering >Seismic floor isolation using recycled tires for essential buildings in developing countries
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Seismic floor isolation using recycled tires for essential buildings in developing countries

机译：地震楼层隔离使用发展中国家的基本建筑物的回收轮胎

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Historical earthquakes in developing countries, particularly in South America, have caused devastating effects in essential buildings, such as hospitals. As a result, some structural retrofits and new designs of essential facilities in South American countries have concentrated on increasing the seismic design forces beyond what is normally required by building codes. This increased-strength approach can lead to quasi-elastic structural response during earthquakes with much larger induced floor accelerations than expected from code-designed structures. In critical structures, sub-par performance of critical non-structural elements, such as medical equipment in a hospital, due to high-induced floor accelerations can have consequences as devastating as structural failures. Passive seismic protection systems, such as seismic isolation, provide a practical means of controlling seismic demand and are now common in developed countries. However, the applications of protection systems have been far fewer in developing countries due to economic considerations and lack of technical expertise. This paper presents the experimental and numerical studies supporting the development of a novel low-cost sustainable protection system incorporating recycled automobile tires for isolating designated floors or rooms in essential buildings in developing countries. The main innovation of the proposed floor isolation system is the geometric arrangement of the rubber tires that allows isolation from both, horizontal and vertical floor accelerations. Horizontal and vertical cyclic testing conducted on tire specimens are first described followed by the development of a numerical model able to reproduce the experimental results. Finally, an existing case-study hospital in Ecuador is considered for evaluating numerically the seismic performance of the proposed floor isolation system.
机译：历史地震在发展中国家，特别是在南美洲，在基本建筑物中造成破坏性影响，如医院。因此，南美国家的一些结构改造和新的基本设施设计集中在增加建筑规范通常需要的地震设计力量上。这种增加的强度方法可以导致地震过程中的准弹性结构响应，其诱导的地板加速度大于代码设计的结构。在临界结构中，由于高诱导的地板加速度，医院医疗设备的临界非结构元素的临界性能可能会导致作为结构故障的破坏性。被动地震保护系统，如地震隔离，提供了控制地震需求的实用手段，现在是发达国家的常见方法。然而，由于经济考虑和缺乏技术专业知识，保护系统的应用在发展中国家的应用程度越来越少。本文介绍了支持开发新的低成本可持续保护系统的实验和数值研究，该系统采用回收的汽车轮胎，用于隔离发展中国家基本建筑物的指定地板或房间。所提出的楼层隔离系统的主要创新是橡胶轮胎的几何布置，允许隔离水平和垂直地板加速度。首先描述在轮胎样本上进行的水平和垂直循环测试，然后开发能够再现实验结果的数值模型。最后，考虑了厄瓜多尔现有的案例研究院，以评估建议地板隔离系统的地震性能。

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