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Case Study of the Structural Behavior of a Catalan Bricks Masonry Vault

机译：加泰罗尼亚砖砌金库的结构行为的案例研究

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Catalan vaults are a peculiar type of low thickness vaulted brick masonry structure. Knowledge of load-deflection response and load bearing capacity are important aspects to consider with the aim of preserving these structural members as part of the cultural heritage. In order to investigate these aspects, complete knowledge of the constituent materials and geometry (dimension, thickness, constructive section) is necessary in such a way as to predict the load-deflection response and the effective load-carrying capacity; the latter can be determined utilizing simplified models (limit analysis) or by means of a numerical analysis (finite element method). With this aim, the structural behaviour of a Catalan vault found in an ancient building in Palermo (Italy) is studied, through an experimental investigation including material characterization and loading test on a full-scale vault. A numerical structural analysis is carried out utilizing an appropriate nonlinear finite element model. The experimental program consisted of on compressive and flexural tests on masonry units and single blocks. From the theoretical point of view, after the identification of an appropriate constitutive model based on the experimental results, a numerical analysis of the vault is performed to study the serviceability condition and the impending collapse one. The obtained results confirm the remarkable structural features of such vaults representing an important step related to the restoration of ancient structures as well as to the design of new ones.
机译：加泰罗尼亚语的穹顶是一种特殊类型的低厚度拱形砖石结构。为了将这些结构构件保留为文化遗产的一部分，了解荷载－挠度响应和荷载能力是重要的方面。为了研究这些方面，必须全面了解构成材料和几何形状（尺寸，厚度，构造截面），以便预测载荷-挠度响应和有效的承载能力。后者可以使用简化模型（极限分析）或通过数值分析（有限元方法）确定。为此，通过包括材料表征和满负荷拱顶的试验在内的实验研究，研究了在意大利巴勒莫的一栋古建筑中发现的加泰罗尼亚拱顶的结构行为。利用适当的非线性有限元模型进行了数值结构分析。实验程序包括对砌体单元和单个砌块的压缩和弯曲测试。从理论上讲，在根据实验结果确定了合适的本构模型之后，对拱顶进行了数值分析，以研究其使用寿命和即将发生的坍塌状况。所得结果证实了这种穹顶的显着结构特征，代表了与古代结构的修复以及新结构的设计有关的重要一步。

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