Damping enhancement of concrete doped nano materials and damping model of frame structure

Abstract

The research of damping is an important and urgent topic in the research of structural vibration. Concrete material is one of the main bulk materials in civil engineering. The purpose of this study is to study the damping enhancement of concrete doped nano materials and the damping model of frame structure. Based on the experimental test method, the example method and the variable comparison method, combined with the damping motion and energy formula, the research carried out the concrete nano material mix proportion design and forming experiment. The results show that 0.0197 of 0% nano-SiO₂ continues to rise to 0.0672 of 4% nano-SiO², with an increase of 241.11%. The effect of damping enhancement is significant, and then the amount of Nano-SiO₂ increases, but it falls back. Therefore, it is concluded that the optimal effect of damping enhancement of concrete is 2.94 times of that of plain concrete when the content of Nano-SiO₂ is about 4%. This study has played an important role in improving the overall performance of the damping reinforced gradient structure concrete.