Ultimate in-plane shear behaviour of clay brick masonry elements strengthened with TRM overlays
Ultimate in-plane shear behaviour of clay brick masonry elements strengthened with TRM overlays
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TRM 覆盖层加固粘土砖砌体元件的最终面内剪切性能
DOI：
10.1007/s10518-023-01775-y
复制
发表时间：
2023
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
本文研究了用纺织增强砂浆（TRM）覆盖层进行加固的传统建筑中常见的由水工石灰砂浆和烧制粘土砖组成的无加筋砌体（URM）构件的响应。研究包括在方形板上进行URM和trm加强的对角压缩试验，以及在重力和侧向循环荷载联合作用下相对大型的墙体试件。还进行了互补压缩、拉伸和界面材料试验。对角线面板测试表明，TRM的有效性以非比例的方式取决于覆盖层，渲染厚度和基材强度。在每侧使用一到四个网格层，刚度、强度和极限剪切应变的增强分别在49-132%、102-536%和300-556%的范围内变化。结果表明，受TRM覆盖层约束的这种低强度URM砌体单元的响应通常由支柱破碎控制。在较大壁面上的循环试验表明，TRM是有效的，将响应从URM对角拉伸转变为摇摆，刚度、强度和极限漂移能力分别提高了160%、30%和130%以上。结果表明，采用分析评价方法预测trm加固和URM加固构件的刚度、强度和荷载-变形响应是可靠的。URM和TRM组分的累积贡献，加上合适的纤维纺织品应变，也被发现提供了一个改进的剪切强度预测与编纂的程序相比。研究结果有助于评估和改进确定trm加固砌体主要非弹性响应参数的分析模型，并为验证未来详细的非线性数值模拟提供信息。
This paper studies the response of unreinforced masonry (URM) members made of hydraulic lime mortar and fired clay bricks, commonly found in heritage structures, strengthened with textile reinforced mortar (TRM) overlays. The investigation includes URM and TRM-strengthened diagonal compression tests on square panels, and relatively large-scale wall specimens subjected to combined gravity and lateral cyclic loads. Complementary compression, tension, and interface material tests are also carried out. The diagonal panel tests show that the TRM effectiveness depends in a non-proportional manner on the overlays, render thickness, and substrate strength. The enhancement in stiffness, strength, and ultimate shear strain, using one to four mesh layers on each side, is shown to vary in the range of 49–132%, 102–536%, and 300–556% respectively. It is shown that strut crushing typically governs the response of such low-strength URM masonry elements confined by TRM overlays. The cyclic tests on the comparatively larger walls show that the TRM is effective, shifting the response from URM diagonal tension to rocking, and enhancing the stiffness, strength, and ultimate drift capacity by more than 160%, 30%, and 130%, respectively. It is shown that analytical assessment methods for predicting the response of TRM-strengthened and URM members in terms of stiffness, strength and load-deformation can be reliably adapted. The cumulative contribution of the URM and TRM components, in conjunction with a suitable fibre textile strain, is also found to offer an improved prediction of the shear strength compared to codified procedures. The findings enable the evaluation and improvement of analytical models for determining the main inelastic response parameters of TRM-strengthened masonry and provide information for validating future detailed nonlinear numerical simulations.
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DOI：
10.3390/ma9070603
发表时间：
2016-07-21
期刊：
Materials (Basel, Switzerland)
影响因子：
--
作者：
Righetti L;Edmondson V;Corradi M;Borri A
通讯作者：
Borri A
用玄武岩纤维增强砂浆（TRM）加固的砌石墙的剪切压缩试验
影响因子：
7.4
作者：
P. Meriggi;C. Caggegi;A. Gabor;G. de Felice
通讯作者：
G. de Felice
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
影响因子：
7.4
作者：
Papanicolaou, Catherine;Triantafillou, Thanasis;Lekka, Maria
通讯作者：
Lekka, Maria
用于修复和加固砌体结构的外部粘结织物增强水泥基体 (FRCM) 和钢筋灌浆 (SRG) 系统的设计和施工指南
影响因子：
3.8
作者：
G. Felice;C. Carloni;Nanni Antonio;Aldea Corina;Banthia Nemkumar;D. Bentz;Casadei Paolo;Michael E. Driver;Dubey Ashish;U. Ebead;Ekenel Mahmut;Brad Erickson;G. Fallis;Mobasher Barzin;H. Nassif;J. Patterson;B. Pekmezci;P. Alva;R. Larry;Surendra P. Shah;Shao Yixin;L. Sneed;J. G. Tumialan;G. Batson;J. I. Daniel;Jones John;A. Naaman;Nedwell Paul;P. Paramasivam;Soroushian Parviz;M. Aiello;Corradi Marco;D’Antino Tommaso;S. Santis;Ferrier Emmanuel;Kwiecień Arkadiusz;G. Lignola;P. Lourenço;Malena Marialaura;C. Mazzotti;O. Daniel;Andrea Prota Thanasis C. Triantafillou Maria Rosa Valluzzi
通讯作者：
Andrea Prota Thanasis C. Triantafillou Maria Rosa Valluzzi