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首页> 外文期刊>Bulletin of earthquake engineering >Review of experimental tests and numerical study on masonry vaults reinforced through fiber-reinforced mortar coating
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Review of experimental tests and numerical study on masonry vaults reinforced through fiber-reinforced mortar coating

机译：纤维增强砂浆涂层加固砌体拱顶实验试验及数值研究的综述

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摘要

The paper deals with the seismic vulnerability of masonry vaults: a review of the results of an experimental campaign recently performed by the authors and a numerical study are presented. In particular, the effectiveness of a strengthening technique based on the application, at the vault extrados or intrados, of a 30mm thick mortar coating with glass fiber-reinforced polymer meshes embedded is discussed, referring to vaults carrying their self-weight and subjected to a lateral transversal load. The role of the connection of the vault with its abutments is particularly emphasised in this review of the experimental results, evidencing how slides and/or uplifts at the spring sections can reduce the strengthening effectiveness. The numerical study, based on non-linear static analysis, allowed to investigate in depth into the effects of an inadequate skewback configuration: it was found that a ductile connection, which allows plastic rotation at the spring section while maintaining the bending resistance and avoiding shear slip and uplift, is the optimal solution. Moreover, the results of a sensitivity study are also presented, as this permits to evaluate the incidence of the different mechanical and geometrical parameters on the behavior of the vaults and provides useful indications towards a proper design and optimization of the strengthening intervention.
机译：本文涉及砌体拱顶的地震脆弱性：审查了作者最近进行的实验活动和数值研究的结果。特别地，讨论了基于嵌入玻璃纤维增​​强聚合物网状物的30mm厚的砂浆涂层的基于应用的强化技术的有效性，包括嵌入玻璃纤维增​​强聚合物网状物，参考携带其自重并经受a的拱顶横向横向载荷。在对实验结果的综述中，特别强调了拱顶的连接的作用，证明了弹簧部分在弹簧部分的载玻片和/或隆起的升高可以降低强化效果。基于非线性静态分析的数值研究允许深入研究散氏配置不足的影响：发现延展性连接，这允许在弹簧部分处塑性旋转，同时保持弯曲电阻和避免剪切滑动和隆起，是最佳解决方案。此外，还提出了敏感性研究的结果，因为这允许评估不同机械和几何参数的发生率对拱顶的行为，并为适当的设计和优化的加强干预提供有用的指示。

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