摘要
针对斜坡平面滑动失稳问题 ,运用突变理论方法 ,给出了快速滑坡和慢速滑坡发生的判据 ,提出了刚度效应失稳新理论 ,指出刚体极限平衡稳定性评价方法有较大缺陷 ;根据建立的斜坡演化非线性动力学模型 ,发现外部环境因素的作用与斜坡系统的响应有复杂的非线性关系 ,当斜坡本身的非线性作用与外部环境因素的作用能力相当时 ,斜坡演化过程会出现混沌现象 ,其通向混沌之路是通过倍周期分叉实现的。
The judgement formula for high and low speed landslide and a new theory of stiffness\|effectinstability are presented for the instability of planar\|sliding slope by the catastrophe theory.It is pointed out that the limit equilibrium stability analysis method of rigidity body has a lot of defects. The relationship between the action of outside environment and the response of slope system is complicatedly nonlinearaccording to the nonlinear dynamics model of slope evolution built.When the nonlinear action of slope itself is equivalent to the action of outside environment,the evolution process of slope is of chaos phenomenon andits road to chaos is realized with bifurcation of period doublings.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2000年第4期486-492,共7页
Chinese Journal of Rock Mechanics and Engineering
基金
中国科学院"百人计划"基金支持项目! (5 5 5 )
关键词
突变
混沌
非线性
演化
斜坡
滑坡
catastrophe,chaos,nonlinear,evolution,slope
