Hitherto, considerable research has been developed on the city scale to estimate the seismic hazard in terms of peak ground acceleration (PGA), which could be a valuable tool for the assessment of the building vulnerability using mechanical approaches. However, as material properties and dynamic characteristics are commonly unavailable to define detailed models for large-scale analysis, mechanical methods cannot be applied building-by-building. The only way to perform this task is by correlating the mechanical method with a macroseismic approach, which can be highly useful when only structural and geometrical surveys are available. In this context, this research aims to develop a simplified mechanical approach to assess the seismic vulnerability and the probability of damage of the Algerian masonry buildings at a large scale using a general structural data survey and in the presence of the seismic hazard in terms of PGA or spectral values. Accordingly, an existing macroseismic method derived from the GNDT II approach was correlated with the mechanical N2 method, which is herein adapted and applied to fit the features of the Algerian masonry buildings. This nonlinear method identifies the performance of buildings by means of “performance point,” referred to as the intersection between the earthquake demand curve, built here according to the Algerian seismic code (RPA 99/version 2003), and the capacity curve of an equivalent nonlinear S.D.O.F. system. For the implementation of the proposed approach, a total of 380 masonry buildings located in Annaba City (North-east in Algeria) were assessed. The fragility and the probability of damage results of the building stock were obtained through a comparison between the application of the vulnerability index method and the simplified mechanical approach for different seismic scenarios.

迄今为止，已经在城市规模上进行了大量研究，以根据峰值地面加速度（PGA）估算地震危险，这可能是使用机械方法评估建筑物易损性的宝贵工具。但是，由于通常无法使用材料属性和动态特性来定义用于大规模分析的详细模型，因此无法逐个建筑物地应用机械方法。执行此任务的唯一方法是将机械方法与宏观地震方法关联起来，这在只有结构和几何勘测可用时非常有用。在这种情况下，这项研究的目的是开发一种简化的机械方法，通过使用常规结构数据调查以及在存在PGA或频谱值方面的地震危险的情况下，大规模评估阿尔及利亚砖石建筑的地震易损性和损坏的可能性。因此，现有的源自GNDT II方法的宏观地震方法与机械N2方法相关联，在此将其修改并应用于适应阿尔及利亚砖石建筑的特征。这种非线性方法通过“性能点”（即根据阿尔及利亚地震法规（RPA 99 / version 2003）在此处建立的地震需求曲线）之间的交点来识别建筑物的性能。非线性SDOF系统。为了实施建议的方法，评估了安纳巴市（阿尔及利亚东北部）的380座砖石建筑。通过比较脆弱性指数法和简化机械法在不同地震情况下的应用，得出了房屋建筑材料的易损性和破坏结果的可能性。