典型土体材料动力参数测试数据集

针对“一带一路”沿线铁路边坡粘土现场力学参数，制作重塑土，通过以下三轴试验：①不同压力下（25kPa、50kPa、100kPa、200kPa、400kPa、800kPa）的三轴等向压缩、回弹试验；② 不同围压下（50kPa、100kPa、200kPa、400kPa）静力三轴不排水剪切试验；③不同围压（50kPa、100kPa、200kPa）、不同振动频率（1Hz、2Hz）的动力三轴不排水剪切试验，分析土体动力变形特性，并依据考虑振动频率的边界面本构模型，确定出模型中的各参数，模型可用于不同振动频率下黏性土的动力特性模拟。Aimed at the in-situ mechanical parameters of clay in railway slopes along the Belt and Road, remolded soil samples were prepared. The following triaxial tests were conducted: ① Triaxial isotropic compression and rebound tests under different pressures (25kPa, 50kPa, 100kPa, 200kPa, 400kPa, 800kPa); ② Static triaxial undrained shear tests under different confining pressures (50kPa, 100kPa, 200kPa, 400kPa); ③ Dynamic triaxial undrained shear tests under different confining pressures (50kPa, 100kPa, 200kPa) and different vibration frequencies (1Hz, 2Hz). The dynamic deformation characteristics of the soil were analyzed, and all parameters in the bounding surface constitutive model that accounts for vibration frequency were determined. This model can be used to simulate the dynamic properties of cohesive soils under different vibration frequencies.

搜集汇总

背景与挑战

背景概述

该数据集针对'一带一路'沿线铁路边坡粘土，通过一系列三轴试验（包括不同压力和围压下的等向压缩、回弹及静动力剪切测试），分析土体的动力变形特性。基于考虑振动频率的边界面本构模型确定参数，用于模拟黏性土在不同振动频率下的动力行为。