Masonry building aggregates are complex historical structures comprising interconnected buildings. The safety of each building depends not only on its structural integrity but also on the interactions with neighbouring structures and their collective performance. The structural assessment of such complex constructions can benefit from BIM methodology. The latter eases modelling complicated solid geometries and assigning mechanical properties information essential for developing a reliable finite element model. Thus far, BIM to finite element analysis procedures applied to historic constructions have remained laborious, semi-automatic, and based on proprietary software. This paper introduces an open-source automated solid finite element analysis method using OpenBIM data (IFC). The tool implemented automatically creates tetrahedron mesh and assigns mechanical properties, self-weights, and fixities at the structure's base. The methodology is applied to an actual masonry building aggregate to validate its capability of working with complex geometries and scalability.

中文翻译：

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基于可扩展 BIM 的开放式工作流程，用于砖石建筑骨料的结构分析

砖石建筑群是由相互连接的建筑物组成的复杂历史结构。每座建筑物的安全不仅取决于其结构的完整性，还取决于与邻近结构的相互作用及其集体性能。此类复杂建筑的结构评估可以受益于 BIM 方法。后者简化了复杂实体几何形状的建模，并分配了开发可靠的有限元模型所必需的机械属性信息。迄今为止，应用于历史建筑的 BIM 到有限元分析程序仍然是费力的、半自动的，并且基于专有软件。本文介绍了一种使用 OpenBIM 数据 (IFC) 的开源自动化实体有限元分析方法。实现的工具会自动创建四面体网格并分配结构底部的机械属性、自重和固定性。该方法应用于实际的砖石建筑骨料，以验证其处理复杂几何形状和可扩展性的能力。