Externally bonded grids as strengthening and seismic retrofitting materials of masonry panels
Externally bonded grids as strengthening and seismic retrofitting materials of masonry panels
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DOI：
10.1016/j.conbuildmat.2010.07.018
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发表时间：
2011-02-01
影响因子：
7.4
通讯作者：
Lekka, Maria
中科院分区：
文献类型：
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作者：
Papanicolaou, Catherine;Triantafillou, Thanasis;Lekka, Maria
在本研究中，外粘结网格被用作增加循环荷载作用下无筋砌体（URM）墙体的承载和变形能力的手段。实验研究是在两组中等规模的单向度钱包上进行的，这些钱包要么由穿孔的烧制粘土砖组成，要么由实心石块组成。试件经受了轴力作用下的面内挠曲、面外挠曲和轴力作用下的面内剪切的循环加载。考虑的参数包括强化层的数量（一层或两层，两侧应用）、网格类型（由碳、玻璃或玄武岩纤维和聚丙烯或聚酯组成的开放式网格结构）、粘结剂类型（不同成分的砂浆或环氧树脂）以及施加于平面加载的试件上的压应力水平。基于这项工作的发现，外部粘合网格的使用为现有砌体结构的结构升级提供了一个有前途的解决方案。(C) 2010 Elsevier Ltd.版权所有。
Externally bonded grids are used in this study as a means of increasing the load-carrying and deformation capacity of unreinforced masonry (URM) walls subjected to cyclic loading. The experimental investigation was carried out on two groups of medium-scale, single-wythe wallettes consisting of either perforated fired clay bricks, or solid stone blocks. The specimens were subjected to cyclic loading which induced in-plane flexure combined with axial force, out-of-plane flexure and in-plane shear with axial force. The parameters considered were the number of strengthening layers (one or two layers, applied on both sides), the type of grid (open mesh structures comprising carbon, glass or basalt fibers and polypropylene or polyester), the type of bonding agent (mortars of different compositions or epoxy resin) and the compressive stress level applied to specimens undergoing in-plane loading. Based on the findings of this work the use of externally bonded grids comprises a promising solution for the structural upgrade of existing masonry structures. (C) 2010 Elsevier Ltd. All rights reserved.