摘要
建立了循环荷载作用下软土地基中孔压发展的经验模型,通过回归分析得到了模型计算参数,采用动态弹塑性有限元法分析了飞机滑行荷载作用下机场道面与软土地基共同作用的变形特性,考虑了孔压对软土变形特性的影响.通过计算实例分析,得到飞机滑行荷载在软土地基中的有效影响深度约为16m.
An empirical pore pressure model of soft clay under cyclic loading is established.Its form is simple and could be easily used in practical engineering .With dynamical elasto-plastic FEM, the paper analyzed the deformation characteristics of pavement and soft subsoil under cyclic loading .Considering the effect of pore pressure generated during the cyclic loading, the effective stress path(ESP) is used. For the case studied, the depth significantly influenced by moving aircraft load is about 16m in the soft subsoil.
出处
《科技通报》
北大核心
2004年第6期534-538,共5页
Bulletin of Science and Technology
关键词
土力学
飞机荷载
孔压模型
软土地基
动态弹塑性有限元
geotechnigue
aircraft load
pore pressure model
soft subsoil
dynamical elasto-plastic FEM
