混凝土的三参数破坏准则

Three-Parameters Failure Criterion for Plain Concrete

本文提出一种三向应力状态下混凝土的破坏准则,该准则表示为三个应力不变量的函数,其中仅包含三个参数,且可方便地由实验标定.通过与实验数据的比较,表明该准则能很好地描述混凝土材料在各种受力状态下的破坏特性.

A general three-dimensional failure criterion for plain concrete is proposed.The criterion has been formulated in terms of three stress invari- ants and it only includes three parameters which may be obtained from experimental data.The application of the criterion has been demonstrated by comparison with available experimental results.From the results of this comparison,it can be seen that the criterion may be applied throughout the stress range from tensile stresses to high compressive stresses.