[提要]  主要研究在三轴应力状态下高强混凝土的强度性能。进行了高强混凝土在三轴受压、三轴拉压和三轴受拉应力状态下共101个试件的试验。为了对比，还开展了普通混凝土在相应应力状态下共85个试件的试验。通过对不同强度等级混凝土三轴强度试验结果的分析和对比，总结了高强混凝土的三轴强度规律，建立了高强混凝土参数形式的破坏准则模型，并给出破坏准则模型中参数标定点的选取。
[关键词]  高强混凝土  三轴应力状态  破坏准则

Strength property of high strength concrete( HSC) under triaxial stress states is studied. Test of the triaxial strength of HSC and normal concrete( NC) reveals the regularities and difference of triaxial strength behavior exist between concrete with different uniaxial compressive strength. Moreover, based on the experimental data of HSC, a three-parameter model of failure criterion is suggested.
Keywords: high strength concrete( HSC); triaxial stress states; failure criterion; meridian plane; deviatoric plane