Masonry is one of the most widely used construction materials in the world. Despite numerous advantages of masonry, a significant drawback is its seismic vulnerability of masonry structures. These structures exhibit low tensile strength, making them susceptible to damage from horizontal forces. This vulnerability is unsurprising, given that many of these buildings were constructed before the implementation of seismic standards. The most vulnerable areas of these buildings are typically masonry piers. Consequently, the strengthening of masonry piers must be executed with a high degree of precision. Strengthening methods for masonry elements are divided into two categories: traditional methods and modern methods. One of the most used methods is a modern method called Fabric-Reinforced Cementitious Matrix (FRCM) method. FRCMs can be installed under unfavorable conditions and exhibit excellent performance under high temperatures due to the properties of the inorganic matrix. Additionally, this method is suitable for application in both brick masonry and stone masonry. To better understand the behavior of FRCM strengthened piers, a proper evaluation is provided in this paper. First, an experimental campaign is conducted with three full scale samples of FRCM piers and three samples of URM piers for the comparison of results. The main results of the experimental campaign are the maximum displacement, maximum in-plane horizontal force and ductility. To check the quality of the results, numerical models are developed in DIANA FEA software. From the comparison of results, it is concluded that the FRCM strengthening method is adequate for URM piers.

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Seismic Strengthening of Masonry Piers with the FRCM System – Comparison of Experimental and Numerical Results

  • Ivan Hafner,
  • Tomislav Kišiček,
  • Matija Gams

摘要

Masonry is one of the most widely used construction materials in the world. Despite numerous advantages of masonry, a significant drawback is its seismic vulnerability of masonry structures. These structures exhibit low tensile strength, making them susceptible to damage from horizontal forces. This vulnerability is unsurprising, given that many of these buildings were constructed before the implementation of seismic standards. The most vulnerable areas of these buildings are typically masonry piers. Consequently, the strengthening of masonry piers must be executed with a high degree of precision. Strengthening methods for masonry elements are divided into two categories: traditional methods and modern methods. One of the most used methods is a modern method called Fabric-Reinforced Cementitious Matrix (FRCM) method. FRCMs can be installed under unfavorable conditions and exhibit excellent performance under high temperatures due to the properties of the inorganic matrix. Additionally, this method is suitable for application in both brick masonry and stone masonry. To better understand the behavior of FRCM strengthened piers, a proper evaluation is provided in this paper. First, an experimental campaign is conducted with three full scale samples of FRCM piers and three samples of URM piers for the comparison of results. The main results of the experimental campaign are the maximum displacement, maximum in-plane horizontal force and ductility. To check the quality of the results, numerical models are developed in DIANA FEA software. From the comparison of results, it is concluded that the FRCM strengthening method is adequate for URM piers.