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Towards Seismic Vulnerability Assessment of the Building Stock in Egypt

机译:走向埃及建筑房屋的地震易损性评估

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Despite the fact that it does not lie in a highly active seismic zone, Egypt suffers, from time to time, from devastating earthquakes. The building stock in Egypt is highly vulnerable to damage from earthquakes due to the rapid and uncontrollable increase of population, coupled with low quality of construction work and lack of laws that enforce seismic design regulation. The need to assess the vulnerability of the building stock to damage due to seismic loads will always be a demand. During the past two decades, the building environment in Egypt had extensively utilized medium rise R.C. buildings having 12 storeys, i.e., the maximum height allowed by the local authorities in most districts. These building are built with different configurations and structural systems having varying stiffness parameters that may have great influence on their seismic behavior. The seismic behavior of this built environment need to be thoroughly assessed. The main objective of this study was to assess the effects of varying stiffness coefficients, of columns and steel ratios of connecting beams, of this built environment, on its seismic behavior. The study aimed to improve the assessment of seismic hazard through investigating the vulnerability of this category of R.C. buildings; the seismic vulnerability will be quantified by reviewing damage indices, drift ratios and capacity curves of these buildings. The study combines the results to elaborate risk scenarios as the first fundamental step in the mitigation process. The study was carried out on a 2-dimensional model of a 12-storey building. Nonlinear dynamic analysis was performed using the computer program IDARC-6.1 (IDARC2D 2006).
机译:尽管事实并非位于活跃度很高的地震带,但埃及仍不时遭受破坏性地震的困扰。由于人口的快速增长和不可控制的增长,再加上建筑工程质量低下以及缺乏强制执行抗震设计法规的法律,埃及的建筑群极易遭受地震破坏。始终需要评估建筑物的易损性,以防止其受到地震载荷的破坏。在过去的二十年中,埃及的建筑环境广泛使用了中等高度的R.C.具有12层的建筑物,即大多数地区的地方政府允许的最大高度。这些建筑物以不同的构型和结构系统建造,这些系统和结构系统的刚度参数可能会对其地震行为产生重大影响。需要对该建筑环境的抗震性能进行彻底评估。这项研究的主要目的是评估在这种建筑环境下,刚度系数,柱的刚度和连接梁的钢比率对其地震行为的影响。该研究旨在通过调查此类钢筋混凝土的脆弱性来改善对地震危害的评估。建筑物;地震脆弱性将通过查看这些建筑物的破坏指数,漂移率和承载力曲线来量化。该研究将结果结合起来,以详细阐述风险情景,将其作为缓解流程的第一步。该研究是在12层建筑的二维模型上进行的。使用计算机程序IDARC-6.1(IDARC2D 2006)进行非线性动力学分析。

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