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.

摘要

阻尼研究是结构振动研究中一个重要而紧迫的课题。混凝土材料是土木工程中主要的散装材料之一。本研究的目的是研究混凝土掺杂纳米材料的阻尼增强和框架结构的阻尼模型。研究基于实验测试法、实例法和变量比较法，结合阻尼运动和能量公式，开展了混凝土纳米材料配合比设计与成型试验。结果表明，0%纳米SiO _{2 的}0.0197继续上升至4%纳米SiO ²的0.0672，增幅为241.11%。阻尼增强效果显着，其次是Nano-SiO ₂的添加量增加，但又回落。因此得出，当Nano-SiO ₂含量为4%左右时，混凝土的最佳阻尼增强效果是素混凝土的2.94倍。该研究对提高阻尼钢筋梯度结构混凝土的整体性能起到了重要作用。