The models of moment-rotation relationship of flush end-plate composite connections were put forward for the monotonic loading and cyclic loading.
目的研究半刚性连接弯矩-转角关系，为半刚性组合框架设计提供依据。
It is proved by calculation that the model can describe well the performance of concrete under uniaxial and multiaxial monotonic loading and fatigue loading.
计算结果表明，该模型能较好地描述混凝土在单轴及多轴单调加载和疲劳加载下的性质。
Although many experimental results in failure criterion and constitutive relation of concrete have been reported, most of them were only applicable to simple proportional monotonic loading.
混凝土在多轴应力下的破坏准则和本构关系的试验研究已有许多成果，但大多仅适用于单调比例加载的情况。
Based on the plastic flow theory of soils, an elastoplastic constitutive model for describing the stress-strain behavior of the saturated sands under the action of monotonic loading is developed.
利用土体的塑性流动理论，提出了用于描述饱和砂土在单调荷载作用下的应力—应变反应性质的弹塑性本构模型。
Based on the plastic flow theory of soils, an elastoplastic constitutive model for describing the stress-strain behavior of the saturated sands under the action of monotonic loading is developed.
利用土体的塑性流动理论，提出了用于描述饱和砂土在单调荷载作用下的应力—应变反应性质的弹塑性本构模型。
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