Experimental And Numerical Study OfMulti-leaf Masonry Walls
Experimental And Numerical Study OfMulti-leaf Masonry Walls
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多层砌体墙的实验与数值研究
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
E. Papa
中科院分区：
文献类型：
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作者：
M. Ramalho;A. Taliercio;A. Anzani;L. Binda;E. Papa
开展了一项研究计划，旨在调查多层石砌墙的机械性能。对三叶样本进行了许多实验测试，该样本由两个由石砖和砂浆接缝制成的外部叶子和一个由砂浆和石骨料制成的内部叶子组成。这些样本在界面几何形状、石材性质和加载条件方面各不相同。开发了一个数值模型来预测样本的非线性响应。该模型的特征是损伤张量，它允许描述伴随裂纹过程的损伤引起的各向异性。在大多数研究案例中，预测失效载荷与测量失效载荷之间的比较非常令人满意。数值程序仍需要改进，以通过避免与材料应变软化行为相关的网格依赖性效应来准确描述峰后行为。
A research programme was carried out with the aim of investigating the mechanical behaviour of multiple-leaf stone masonry walls. A number of experimental tests were performed on three-leaf specimens, consisting of two external leaves made of stone bricks and mortar joints, and an internal leaf in mortar and stone aggregate. The specimens differed from each other in terms of interface geometry, stone nature, and loading conditions. A numerical model was developed to predict the nonlinear response of the specimens. The model is characterized by a damage tensor, which allows one to describe the damage-induced anisotropy accompanying the cracking process. Comparisons between the predicted and measured failure loads are quite satisfactory in most of the studied cases. The numerical procedure still needs to be improved to accurately describe the post-peak behaviour, by avoiding mesh-dependency effects related to the strain-softening behaviour of the material.