The model and arithmetic of IEM is introduced in the paper.The strength and process of crack propagation for tensile compression and three-point-bend are simulated by numerical analysis.

• 本文介绍了混凝土细观结构的界面元离散仿真模型计算方法，论述并验证了细观模型的正确性，对混凝土单轴抗拉试验、单轴抗压试验、劈裂试验、三点弯曲及裂纹扩展破坏过程进行了数值模拟。