Corradi Marco, Borri Antonio, Castori Giulio, Coventry Kathryn
Department of Mechanical and Construction Engineering, Northumbria University, Wynne-Jones Building, Newcastle upon Tyne NE1 8ST, UK.
Department of Engineering, University of Perugia, 92 Via Duranti, Perugia 06125, Italy.
Materials (Basel). 2015 Nov 27;8(12):8059-8071. doi: 10.3390/ma8125445.
An increasing interest in the preservation of historic structures has produced a need for new methods for reinforcing curved masonry structures, such as arches and vaults. These structures are generally very ancient, have geometries and materials which are poorly defined and have been exposed to long-term historical movements and actions. Consequently, they are often in need of repair or reinforcement. This article presents the results of an experimental study carried out in the laboratory and during on-site testing to investigate the behaviour of brick masonry vaults under dynamic loading strengthened with FRPs (Fiber Reinforced Polymers). For the laboratory tests, the brick vaults were built with solid sanded clay bricks and weak mortar and were tested under dynamic loading. The experimental tests were designed to facilitate analysis of the dynamic behaviour of undamaged, damaged and reinforced vaulted structures. On-site tests were carried out on an earthquake-damaged thin brick vault of an 18th century aristocratic residence in the city of L'Aquila, Italy. The provision of FRP reinforcement is shown to re-establish elastic behavior previously compromised by time induced damage in the vaults.
对历史建筑保护的兴趣日益浓厚，这就产生了对加固诸如拱和穹顶等弧形砖石结构的新方法的需求。这些结构通常非常古老，其几何形状和材料界定不清，并且长期受到历史变迁和作用的影响。因此，它们常常需要修复或加固。本文介绍了在实验室和现场测试中进行的一项实验研究的结果，该研究旨在调查用纤维增强聚合物（FRP）加固的砖砌穹顶在动态荷载作用下的性能。对于实验室测试，砖砌穹顶采用实心磨砂粘土砖和强度较低的砂浆建造，并在动态荷载下进行测试。实验测试旨在便于分析未受损、受损和加固后的拱形结构的动态性能。现场测试是在意大利拉奎拉市一座18世纪贵族住宅的地震受损薄砖穹顶上进行的。结果表明，提供FRP加固可重新建立先前因穹顶中时间导致的损伤而受损的弹性行为。
