In this study, dynamic triaxial tests of natural sand soils and fiber reinforced soils were conducted. The influence of loading frequency, water content, and compaction degree on the dynamic shear modulus and damping ratio of natural soils were identified. Different fiber length, confining pressure, and fiber content were studied to gain the dynamic characteristics of fiber reinforced soils. The results show that the water content and compaction degree has a significant effect on the dynamic behavior of natural soils, and confining pressure and fiber content has a visible reinforcement effect on the dynamic characteristic of fiber reinforced soils. The empirical formulas of maximum dynamic shear modulus (G_{d max}), ultimate shear stress (τ_dult), and damping ratio ($\lambda$) were generate, which can provide references for fiber reinforced soil design.

在这项研究中，进行了天然砂土和纤维增强土的动态三轴试验。确定了加载频率，含水量和压实度对天然土动力剪切模量和阻尼比的影响。研究了不同的纤维长度，围压和纤维含量，以获取纤维增强土的动力特性。结果表明，含水量和压实度对天然土的动力特性具有显着影响，围压和纤维含量对纤维增强土的动力特性具有明显的增强作用。最大动态剪切模量（的经验公式ģ _d最大），极限剪切应力（τ _dult），阻尼比（$\lambda$）生成，可为纤维增强土壤设计提供参考。