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Numerical investigation of the behaviour of the church of Agia Triada, Drakotrypa, Greece

机译：希腊Drakotrypa Agia Triada教堂行为的数值研究

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This paper includes the most important findings of a series of both linear elastic and non-linear analyses focusing on the development of failure developing on the masonry structural elements, identified through different failure criteria, of a post-Byzantine church. The historic monument which was selected for this investigation is the church of Agia Triada, at the District of Karditsa, Greece. The numerical simulation of the behaviour of the structural system for this church includes all parts of the super-structure and load combinations of the gravitational loads and/or earthquake forces. A first objective of this study is to assess the importance of various structural elements, such as the tympana, apses, secondary vaulting and openings in the peripheral walls and the dome. A second objective is to predict the initiation and propagation of failure at various structural elements considering (a) a Mohr-Coulomb failure criterion with a limit on tension strength and (b) three alternative modified Von-Misses failure envelopes. These distinct failure criteria are applied for the same structure and for the same load combinations. The Mohr-Coulomb failure criterion is combined with stress fields as they result from a linear elastic analysis whereas the three alternative modified Von-Misses failure envelopes are incorporated in a non-linear, step-by-step incremental analysis. The initiation and propagation of failure, predicted by all these criteria, and the corresponding failure areas are compared and discussed.
机译：本文包括一系列线性弹性和非线性分析中最重要的发现，这些分析着重于后拜占庭式教堂在砖石结构元件上的破坏发展，并通过不同的破坏标准加以识别。这次调查选择的历史古迹是希腊Karditsa区的Agia Triada教堂。该教堂结构系统行为的数值模拟包括超结构的所有部分以及重力荷载和/或地震力的荷载组合。这项研究的第一个目的是评估各种结构元素的重要性，例如鼓膜，近视，次级穹顶以及外围壁和圆顶的开口。第二个目标是考虑（a）受拉强度限制的莫尔-库仑破坏准则和（b）三个替代的改进的Von-Misses破坏包络来预测各种结构元件的破坏发生和传播。这些不同的破坏准则适用于相同的结构和相同的荷载组合。 Mohr-Coulomb破坏准则与线性弹性分析产生的应力场相结合，而三个替代的改进的Von-Misses破坏包络则纳入非线性的逐步增量分析中。比较和讨论了由所有这些标准预测的故障的引发和传播，以及相应的故障区域。

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