Validation of Simplified Micro-models for the Static Analysis of Masonry Arches and Vaults
Validation of Simplified Micro-models for the Static Analysis of Masonry Arches and Vaults
复制标题
砖石拱门和拱顶静态分析的简化微观模型的验证
DOI：
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发表时间：
2020
期刊：
影响因子：
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通讯作者：
C. Calderini
中科院分区：
文献类型：
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作者：
M. Alforno;A. Monaco;F. Venuti;C. Calderini
摘要与简单的砌体墙相比，砌体拱结构的数值模拟特别复杂，因为它们的三维曲线几何形状和铰接砌体模式。此外，实验数据的稀缺性使得难以验证这些类型的结构的数值模型。最近，简化的微观建模方法已被不同的作者，尽管有一些内在的限制，如巨大的数值工作和采用特设的书面数字代码。本研究的目的是克服这些困难，通过使用一个商业软件与内置的摩擦界面模型，并验证所提出的简化的微观模型，通过实验测试的规模标本的拱和十字拱顶。所提出的方法已显示出有前途的功能：实验结果已被数值再现具有很高的精度，无论是在平面和空间结构的情况下，干和砂浆接头。研究的最终结果是一个有效的建模策略，可以放心地应用到真实的砌体拱形结构。
ABSTRACT Compared to simple masonry walls, numerical modelling of masonry vaulted structures is particularly complex due to their three-dimensional curved geometry and articulated masonry pattern. Moreover, the scarce availability of experimental data makes it difficult to validate numerical models for these types of structures. Recently, the simplified micro-modelling approach has been applied by different authors, despite some intrinsic limits, such as huge numerical effort and adoption of ad-hoc written numerical codes. The aim of this study is to overcome these difficulties by using a commercial software with built-in friction interface models and to validate the proposed simplified-micro model through experimental tests on in-scale specimens of arch and cross vault. The proposed approach has shown promising features: experimental results have been numerically reproduced with a high degree of accuracy, both in case of planar and space structures, with both dry and mortar joints. The final result of the study is a validated modelling strategy that could be confidently applied to real masonry vaulted structures.