Simplified FEM modelling for the collapse assessment of a masonry vault
Simplified FEM modelling for the collapse assessment of a masonry vault
复制标题
用于砖石拱顶倒塌评估的简化 FEM 建模
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
F. Bontempi
中科院分区：
文献类型：
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作者：
Pierluigi Olmati;K. Gkoumas;F. Bontempi
这项研究的动机是意大利南部一座旧砖石建筑的倒塌。有限元分析的重点是对比墙对拱顶稳定性的影响。在分析中，由于拆除项目，该结构在对比墙上遭受了损坏场景，并使用 Ls-Dyna® 进行的显式动态模拟来评估损坏的后果。采用微观建模技术（离散 FEM 模型）对砌体进行建模：通过砌体单元之间的接触面对砂浆进行建模，并通过网格块进行显式建模。事实证明，这种建模技术可以有效预测结构的倒塌行为。
This study is motivated from the collapse of an old masonry building in the Southern Italy. FEM analyses are carried out focusing on the influence of the contrasting wall on the stability of the vault. In the analyses, the structure is subjected to a damage scenario on the contrasting wall due to a demolition project, and the consequence of the damage is evaluated using the explicit dynamic simulation made by Ls-Dyna®. A micro modelling technique (discrete FEM model) is adopted to model the masonry: the mortar is modelled by contact surfaces between the masonry units, which are explicitly modelled by blocks of meshes. This modelling technique is proven to be effective to predict the collapse behavior of the structure.