摘要
为了分析微细观非均质结构对土体宏观力学特性的影响,本文基于有关局部非均质土波动理论的最新研究成果,推导了不考虑固体颗粒压缩性时,能描述局部结构对孔压增长和消散过程影响的动力学模型。针对周期荷载作用下的一维饱和土层,获得了孔隙水压分布的解析解。分别以松弛时间和荷载频率为变量,定量分析了这两参数对孔隙水压发展的影响趋势,并确定这两者影响孔压发展的敏感区间。
For analyzing the influence of the micro-mesoscopic inhomogeneous structures on the macroscopic mechanical property, based on the latest wave motion theory about the local inhomogeneous soil , the dynamic modelof which could describe the influence of the local structure on the pore pressure dynamic response as the solid grain is incompressible. By using this model, the analytical solution of the pore pressure is achieved in theone-dimensional saturated soil layer bearing periodic load. Treating the relaxation time and the load frequency as variables, the influence trends of which in the pore pressure are analysed quantitatively, and the sensitive range ofthem are determined.
出处
《地震工程与工程振动》
CSCD
北大核心
2013年第1期178-183,共6页
Earthquake Engineering and Engineering Dynamics
基金
中科院"百人计划"择优支持项目
中科院重要方向性项目的支持(No.kzcxz-yw-150)
关键词
局部非均匀土
固体颗粒不可压缩
孔隙水压力
松弛时间
荷载频率
saturated local inhomogeneous soil
incompressible solid grain
pore pressure
the relaxation time
loading frequency
