论文部分内容阅读
本文分析了夹层坝基的破坏机理,并以库伦—莫尔准则为屈服条件,用刚塑性极限平衡理论分析了夹层坝基临界破坏的极限平衡状态。分析得到抗力体的破坏范围和滑动面的形状、计算均质或有平行节理系的抗力体极限抗力和夹层坝基抗滑稳定安全系数的公式。 本文用刚体极限平衡分析法、有限元法与本文提供的刚塑性法三种方法对一例题作了对比计算分析。计算证明:本方法是比较合理和比较准确的。
In this paper, the failure mechanism of the sandwich dam foundation is analyzed, and the Coulomb-Mohr criterion is used as the yield condition. The limit equilibrium state of the critical failure of the sandwich dam foundation is analyzed using the rigid-plastic limit equilibrium theory. The damage range of the anti-force body and the shape of the sliding surface were calculated, and the formulae for calculating the ultimate resistance of the anti-friction body and the anti-sliding stability safety coefficient of the sandwich dam foundation were calculated. In this paper, the comparison and analysis of one case is made by using rigid body limit equilibrium analysis method, finite element method and rigid plasticity method provided in this paper. Calculations prove that this method is reasonable and accurate.