In-plane lateral cyclic behaviour of lime-mortar and clay-brick masonry walls in dry and wet conditions
In-plane lateral cyclic behaviour of lime-mortar and clay-brick masonry walls in dry and wet conditions
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干湿条件下石灰砂浆和粘土砖砌体墙的面内横向循环行为
DOI：
10.1007/s10518-021-01170-5
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发表时间：
2021
影响因子：
4.6
通讯作者：
Elghazouli A
中科院分区：
文献类型：
--
作者：
Elghazouli A
本文介绍了一个实验研究的结构和材料的反应环境干燥和潮湿的粘土砖/石灰砂浆砌体元件。除了对四个大型砌体墙进行面内侧向位移和共同存在的压缩重力荷载的循环试验外，本研究还包括对方形砌体板在对角受压下和圆柱形砌体芯在受压下的补充试验。在描述了试样的细节、润湿方法和测试安排之后，提供并讨论了主要结果和观察结果。从全场数字图像相关测量获得的结果，使材料的剪切压缩强度信封的详细评估，并允许直接比较与结构墙的强度特性。还评估了大型墙体的全荷载-变形行为，包括其延性和破坏模式，并与现有评估模型的预测进行了比较。结果表明，水分对主要材料性能，包括剪切和压缩强度，砖-砂浆相互作用参数，弹性模量和剪切模量有显着的影响。水分影响的程度是一个函数的管理行为和材料特性，以及剪切和预压应力之间的相互作用，并可能导致超过三分之一的刚度和强度的损失。对于大型墙试件进行横向加载和共存的压缩，湿干减少被发现是高达20%和11%的刚度和横向强度，分别，而延性比减少了高达12%。总体而言，只要关键的水分依赖性材料的性能进行适当的评估，它表明，分析评估方法可以可靠地适应预测的响应，在横向刚度，强度和整体载荷变形方面，干和湿砌体墙。
This paper presents an experimental investigation into the structural and material response of ambient-dry and wet clay-brick/lime-mortar masonry elements. In addition to cyclic tests on four large-scale masonry walls subjected to lateral in-plane displacement and co-existing compressive gravity load, the study also includes complementary tests on square masonry panels under diagonal compression and cylindrical masonry cores in compression. After describing the specimen details, wetting method and testing arrangements, the main results and observations are provided and discussed. The results obtained from full-field digital image correlation measurements enable a detailed assessment of the material shear-compression strength envelope, and permit a direct comparison with the strength characteristics of structural walls. The full load-deformation behaviour of the large-scale walls is also evaluated, including their ductility and failure modes, and compared with the predictions of available assessment models. It is shown that moisture has a notable effect on the main material properties, including the shear and compression strengths, brick–mortar interaction parameters, and the elastic and shear moduli. The extent of the moisture effects is a function of the governing behaviour and material characteristics as well as the interaction between shear and precompression stresses, and can lead to a loss of more than a third of the stiffness and strength. For the large scale wall specimens subjected to lateral loading and co-existing compression, the wet-to-dry reduction was found to be up to 20% and 11% in terms of stiffness and lateral strength, respectively, whilst the ductility ratio diminished by up to 12%. Overall, provided that the key moisture-dependent material properties are appropriately evaluated, it is shown that analytical assessment methods can be reliably adapted for predicting the response, in terms of the lateral stiffness, strength and overall load-deformation, for both dry and wet masonry walls.
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DOI：
10.1061/(asce)st.1943-541x.0000053
发表时间：
2009-10
期刊：
Journal of Structural Engineering-asce
影响因子：
--
作者：
G. Vasconcelos;P. Lourenço
通讯作者：
G. Vasconcelos;P. Lourenço
DOI：
--
发表时间：
2019
期刊：
Numerical Modeling of Masonry and Historical Structures
影响因子：
--
作者：
B. Ghiassi;AT Ad Vermeltfoort;P. Lourenço
通讯作者：
P. Lourenço
平面横向荷载下砌体静力循环性能试验结果
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
G. Magenes;P. Morandi;A. Penna
通讯作者：
A. Penna
小砖砌体试样的面内剪切和拉伸强度测试
DOI：
--
发表时间：
2016
期刊：
影响因子：
--
作者：
L.
通讯作者：
L.
砖砌体的抗剪强度标准及相关测试
影响因子：
2.6
作者：
A. Hendry
通讯作者：
A. Hendry