stress-rupture strength limit

Test results show that two discontinuity points could be found in tensile stress-amplitude attenuation curve, they correspond to long time strength and creep failure limit respectively.

结果表明，拉伸过程中混凝土内部结构存在2个不连续点，它们分别与持续高技应力下的持久强度和徐变破坏极限较好地吻合。

The limit equilibrium method and finite element analysis method are currently the main method of slope stability analysis. Finite element method includes finite element strength reduction and FE slope method based on slip stress.

极限平衡法和有限元分析方法是目前进行边坡稳定分析的主要方法，其中有限元法包括有限元强度折减法和滑面应力分析法。

Concrete behavior under the biaxial state of stress is represented by a nonlinear constitutive relationship, which incorporates tensile cracking at a limit stress, tension stiffening and shear retention effects for cracked concrete, and the strain-softening phenomenon beyond the maximum compressive strength.

混凝土的非线性本构关系，则考虑受拉开裂、开裂后的拉伸加强效应和剪切折减系数以及屈服后的应变软化现象。