基于细观随机模型的混凝土抗拉强度模拟研究

Numerical Research on Concrete Tensile Strength Based on Micro-Random Aggregate Model

基于细观随机骨料模型的"数字混凝土"数值仿真是目前研究混凝土力学性能的重要手段之一。该方法可真实描述混凝土材料的非均质性,并直观反映混凝土试件内部应力、裂缝等分布状况。基于随机骨料模型,模拟了不同骨料分布下的混凝土圆柱体试件抗拉强度变化规律,探讨了混凝土非均质性对混凝土宏观力学性能的影响。

Numerical analysis on ＂numerical concrete＂ with micro-random aggregate model is one of the important methods to study the mechanical properties of concrete. This method can be used to simulate the heterogeneous concrete model accurately, and describe the stress and cracks inside concrete. In this paper, the tensile strength of different concrete prism was simulated and analyzed based on the micro-random aggregate model. Further, the effect of heterogeneity on concrete macro-mechanical properties was discussed.