摘要
利用参变量变分原理，建立了块体-夹层模型的弹塑性分析和接触分析方法，将岩土结构的弹塑性问题和接触问题转化为泛函在屈服条件和接触条件约束下的极值问题，并将岩土结构的弹塑性问题与接触问题统一处理，用以模拟边坡、地基等岩土结构的破坏、失稳、滑移、接触等非线性力学行为，可以很方便地处理岩土材料的非法向流动和软化等行为，避免了传统方法在处理弹塑性问题和接触问题时的迭代过程。
In this paper, usingparametic variational principle the elastoplastic analysis and contact analysis and analysis method for block-seams Model is established to simulate the nonlnear behavior(e. g.failure, sliding and contacting) of rock and soil structure such as slope and foundation.The elastoplastic analysis and contact analysis of rock and soil structure are deduced to find the minimum of functional with the constraint of yield and contact conditions so that only a linear complementary problem is to be finally solved.Thus the elastoplastic analysisand contact analysis all contact analysis of rock and soil structures are treated in the same way.Turthrmore,the non-associate flow and strain softening problem can be solved easily by this method,the iterations, which are essential in the traditional elastoplastic analyis and contact analaysis method,are avoided and the computational effort is significantly reduced.
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
1998年第3期1-5,共5页
Chinese Journal of Geotechnical Engineering
基金
国家自然科学基金!59509002
关键词
块体-夹层模型
边坡稳定性
有限元
岩土工程
block-seams model, slope stability ,nonlinear finite elementm rock and soil engineering
