This paper aims at comparing the use of different software environments for the study of a simple unreinforced masonry building through nonlinear static analyses. The presented results are part of a wider research project conducted within the ReLUIS consortium, and specifically within a research task whose purpose is providing practitioners with results and tools for an aware employment of commercial software packages for modelling masonry structures. In this study one of the benchmark structures of the research program is analysed; a two-story building characterized by rigid horizontal diaphragms, considering different configurations in terms of openings arrangements and effectiveness of ring beams, is subjected to seismic load conditions. Software packages considering two- and three- dimensional structural models are employed, and the obtained results are compared in terms of capacity curves and collapse mechanisms. One of the critical aspects on the basic assumptions made by software in terms of way to apply the horizontal loads is further investigated. In addition, the role of the shear strength is analysed correlating the mechanical properties to be adopted with micro- and macro- models. The considered models present very different features, and the analogies and differences obtained in the results are critically interpreted in view of the different hypotheses made by the software tools in terms of modelling strategies and adopted constitutive laws.

本文旨在通过非线性静力分析，比较不同软件环境在研究简单的无钢筋砌体建筑时的使用情况。所呈现的结果是 ReLUIS 联盟内进行的更广泛研究项目的一部分，特别是在一项研究任务中，其目的是为从业者提供结果和工具，以便有意识地使用商业软件包来建模砖石结构。在这项研究中，分析了研究计划的基准结构之一；一座以刚性水平隔板为特征的两层建筑，在开口布置和圈梁有效性方面考虑了不同的配置，受到地震荷载条件的影响。采用考虑二维和三维结构模型的软件包，并在容量曲线和坍塌机制方面对所得结果进行了比较。进一步研究了软件在应用水平载荷的方式方面所做的基本假设的关键方面之一。此外，还分析了剪切强度的作用，将采用的力学性能与微观和宏观模型相关联。考虑的模型呈现出非常不同的特征，并且鉴于软件工具在建模策略和采用的本构法则方面做出的不同假设，对结果中获得的类比和差异进行了批判性解释。此外，还分析了剪切强度的作用，将采用的力学性能与微观和宏观模型相关联。考虑的模型呈现出非常不同的特征，并且鉴于软件工具在建模策略和采用的本构法则方面做出的不同假设，对结果中获得的类比和差异进行了批判性解释。此外，还分析了剪切强度的作用，将采用的力学性能与微观和宏观模型相关联。考虑的模型呈现出非常不同的特征，并且鉴于软件工具在建模策略和采用的本构法则方面做出的不同假设，对结果中获得的类比和差异进行了批判性解释。