结果表明，该数值模型及计算方法能够较好地反映混凝土在单轴荷载作用下的力学特性。

It is shown that that numerical mode and calculation means are used to simulate the mechanical behaviors of concrete in uniaxial load.

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模拟结果表明，该模型可以用来研究单轴荷载作用下混凝土结构的破坏机理和多种尺寸试样尺寸效应律。

The result shows that the model can be used to study the mechanism of concrete failure and size effect of concrete structures under uniaxial loads.

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本文采用随机骨料模型和双折线损伤模型相结合，在细观层次上对混凝土在单轴荷载作用下的力学特性和破坏机理进行了数值研究。

In this paper, the random particle model and double lines damage model are used, and uniaxial mechanical properties of concrete and the damage mechanism are integrated on meso-level.

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