Maedeh Orouji
Erfan Najaf
Abstract
In recent years, there has been a great progress in using FRP materials as masonry in civil engineering. In this regard, researchers have investigated behavior of reinforced beams with FRP and steel bars. One way to enhance these sections is pre-stressing FRP bars in order to increase bending and shearing strength of sections. Reinforcing with hybrid bar is a new method in which GFRP and steel bars are combined. In this research, first, the type of GFRP bars are determined and then samples are pre-stressed. Samples are modeled using LSDYNA software. Bending and shearing failure modes of reinforced beams with FRP, GFRP, steel and hybrid bars are analyzed and finally load-displacement behavior and crack width are compared.
Keywords
reinforced beams;bending failure;pre-stressed GFRP;shearing failure;LSDYNA
