ABSTRACT

There are many available studies on the reinforcement of columns by confinement with composite materials. However, in the particular case of stone elements, there is a lack of information regarding the performance of this solution under adverse conditions, which may occur during the life service of the structure. In this research, the confinement of calcarenite samples with a Fiber Reinforced Polymer (FRP) jacket has been studied in different scenarios, which simulate real conditions of structural retrofitting works. Specifically, the FRP’s efficiency was assessed in water saturation specimens, in damaged samples due to previous load, or the FRP jacket was casted directly in preloaded stone columns. As a general conclusion, FRP could improve notably the compressive strength of the unconfined material. In addition, the mechanical behavior seemed to depend on the FRP properties rather than the actual damage suffered by the rock core.

摘要

有许多关于用复合材料约束柱加固的研究。然而，在石构件的特殊情况下，缺乏关于这种解决方案在不利条件下的性能的信息，这种情况可能发生在结构的使用寿命期间。在这项研究中，研究了在不同场景下使用纤维增强聚合物 (FRP) 护套对钙石样品的限制，模拟了结构改造工程的真实情况。具体来说，FRP 的效率在水饱和试样、由于先前载荷而损坏的试样中进行评估，或者 FRP 护套直接浇注在预加载的石柱中。作为一般结论，FRP 可以显着提高无侧限材料的抗压强度。此外，