利用塑性分析上限定理，考虑岩土介质本身的非线性破坏准则，对各种不同破裂面边坡稳定性分析进行研究。
The slope stability analysis is studied with the nonlinear failure criterion based on the plastic upper limit theorem.
应用井眼稳定力学理论和H - B非线性准则，建立了井眼围岩力学滑移破坏方程。
The mechanics theory of the borehole stability and H-B's nonlinear criterion are used to establish the equations for slip failure of the rock mechanics around borehole.
建立了混凝土非线性疲劳损伤方程和变幅荷载下的疲劳破坏准则，分析了加载次序效应对总疲劳寿命的影响；
Found non-linear fatigue damage equation and fatigue failure criterion of concrete under variable amplitude load, and analyze the influence of loading sequence on total fatigue life;
建立了混凝土非线性疲劳损伤方程和变幅荷载下的疲劳破坏准则，分析了加载次序效应对总疲劳寿命的影响；
Found non-linear fatigue damage equation and fatigue failure criterion of concrete under variable amplitude load, and analyze the influence of loading sequence on total fatigue life;
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