Experimental assessment of the in-plane lateral capacity of autoclaved aerated concrete (AAC) masonry walls with flat-truss bed-joint reinforcement
Experimental assessment of the in-plane lateral capacity of autoclaved aerated concrete (AAC) masonry walls with flat-truss bed-joint reinforcement
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DOI：
10.1016/j.conbuildmat.2015.02.057
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发表时间：
2015-05
影响因子：
7.4
通讯作者：
A. Penna;M. Mandirola;M. Rota;G. Magenes
中科院分区：
文献类型：
--
作者：
A. Penna;M. Mandirola;M. Rota;G. Magenes
在过去进行的实验活动表明，桁架床接头钢筋的存在下提供了一个普遍的改善性能的砌体面板受到水平的行动。桁架式单元能有效地提高结构的抗力，减少结构的损伤，从而提高结构的位移能力。文献中的实验测试，在不同规模的原型上进行，或与细长、轴向荷载和边界条件的可能组合相比，数量较少，很难得出关于水平钢筋对特定砌体类型性能改善的真实的益处的定量结论。本文提出的实验活动包括一组在平面内循环试验蒸压加气混凝土（AAC）砌体板与薄的水平和垂直缝填充薄层砂浆，无论是在无筋和底缝配筋砌体平桁架底缝钢筋。结果的直接比较，沿着与具体的测试进行的钱包与两种不同的施工技术，允许评估的有效性的水平钢筋在提高平面内的抗震性能的AAC砌体。
Experimental campaigns carried out in the past showed that the presence of truss bed-joint reinforcement provides a general improvement to the performance of masonry panels subjected to horizontal actions. The truss-like elements are effective in improving resistance and reducing damage and, therefore, they enhance the displacement capacity. The experimental tests available in the literature, performed on prototypes in different scale or in small number compared to the possible combinations of slenderness, axial load and boundary conditions, hardly allow drawing quantitative conclusions on the real benefit of the presence of horizontal reinforcement to the performance improvement for a specific masonry type. The experimental campaign presented in this paper includes a set of in-plane cyclic tests on Autoclaved Aerated Concrete (AAC) masonry panels with thin horizontal and vertical joints filled with thin layer mortar, made both in unreinforced and bed-joint reinforced masonry with flat-truss bed-joint reinforcement. The direct comparison of the results, along with specific tests performed on wallettes made with the two different construction technologies, allows the assessment of the effectiveness of the horizontal reinforcement in enhancing the in-plane seismic performance of AAC masonry.