Abstract This paper presents the experimental results obtained from tests on two masonry vaults reinforced by Textile Reinforced Mortar (TRM) materials subjected to monotonic and cyclic vertical settlements in one of their supports. Two full-scale square masonry timbrel vaults were built in one of ICITECH’s laboratories at the Universitat Politecnica de Valencia (Valencia, Spain) using the traditional Catalan layered-construction technique, with various layers of clay tiles arranged in two perpendicular masonry textures joined by lime and cement mortar joints. Due to their peculiar geometric and mechanical features, i.e. their high slenderness ratio, low tensile strength and high material heterogeneity, these structures are especially prone to damage from high-risk events such as soil settlement or seismic excitation. To evaluate their response to vertical support displacements, both vaults were pre-damaged by either vertical monotonic or cyclic settlements. They were then strengthened by a radial TRM strengthening configuration and re-tested until failure. A complex network of traditional and optical sensors was used to monitor displacements, deformation and the development of the cracking mechanism under both settlement conditions. The results obtained show that TRM materials can be used to effectively repair severely damaged masonry timbrel vaults, helping to partially restore the initial elastic stiffness, as well as doubling the vaults’ elastic phase and ultimate displacements. In addition, TRM materials did not alter the stiffness degradation trend, although they had a strong effect on peak reaction degradation and failure modes. This investigation represents a valuable and unique source of information about the efficacy of TRM materials to repair full-scale pre-damaged masonry timbrel vaults.

中文翻译：

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纺织增强砂浆 (TRM) 材料修复全尺寸鼓式砌体交叉拱顶的有效性

摘要 本文介绍了对两个由纺织增强砂浆 (TRM) 材料加固的砖石拱顶进行的试验结果，这些拱顶在其一个支架上经受单调和循环垂直沉降。在瓦伦西亚理工大学（西班牙巴伦西亚）的 ICITECH 实验室之一建造了两个全尺寸的方形砖石拱顶，使用传统的加泰罗尼亚分层施工技术，将不同层的粘土砖排列成两个垂直的砖石纹理，并用石灰连接和水泥砂浆接缝。由于其特殊的几何和力学特征，即高长细比、低抗拉强度和高材料异质性，这些结构特别容易受到土壤沉降或地震激发等高风险事件的破坏。为了评估它们对垂直支撑位移的反应，两个拱顶都被垂直单调或循环沉降预先损坏。然后通过径向 TRM 加强配置对它们进行加强，并重新测试直至失效。传统和光学传感器的复杂网络用于监测两种沉降条件下的位移、变形和开裂机制的发展。获得的结果表明，TRM 材料可用于有效修复严重损坏的砌体鼓形拱顶，有助于部分恢复初始弹性刚度，并使拱顶的弹性相位和最终位移加倍。此外，TRM 材料没有改变刚度退化趋势，尽管它们对峰值反应退化和失效模式有很强的影响。