摘要
从Biot理论和孔隙流体均一性的概念出发,研究了单层土中饱和度、土的性质、土层厚度和加载频率对竖向振动放大系数函数的影响,得出了在不同条件下的数值解。给出了数值算例并进一步研究了饱和度、粘弹性系数、土层厚度以及频率对放大系数的影响。从研究结果中可以看出,饱和度、粘弹性系数、土层厚度等对粘弹性土层中竖向振动的放大系数影响程度各不相同,有一定的工程意义。
Based on Biot＇s theory and the concept of homogeneous porous fluid, the function of vertical vibration amplification is described as a function of degree of saturation, soil properties, layer thickness and loading frequency. Numerical examples are given to illustrate the influence of saturation, soil properties, layer thickness, coefficient of viscoelasticity, and frequency on the motion amplification. The achieved results indicate that the influence of saturation, coefficient of viscoelasticity and layer thickness on the vertical vibration amplification are different. Some valuable conclusions are drawn.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第24期4534-4539,共6页
Chinese Journal of Rock Mechanics and Engineering
关键词
土力学
动力学
振动
准饱和
粘弹性
竖向振动放大系数
soil mechanics
dynamics
vibration： quasi-saturation
viscoelasticity
vertical vibration amplification
