中文摘要：

介绍了混凝土宏细观力学性能及细观力学机理研究现状,总结了混凝土细观力学机理研究的不足之处,提出了混凝土力学性能与力学机理的＂宏细统一,拉压同质,压拱拉裂＂的研究思路与力学模型。此研究思路与力学模型,有可能较好地统一混凝土宏观非线性力学行为与细观损伤演化过程,较好地解释混凝土在拉压应力、拉压循环应力等状态下力学行为的细观损伤机理（本质）。

英文摘要：

The review of mechanical behavior and micro mechanism of concrete is gained,the inadequacies of the presented study on which were summarized. And we proposed the research idea and mechanism the unity of the macro mechanism and micro mechanism, the same nature of both damages under tensile and compression,and the tensile cracks from the compression stress flow arch are pro-posed,in the field of the nonlinear macro-mechanical behavior and the micro damage evolution of concrete. The mechanics mode may unify nonlinear macro-mechanical behavior and micro-damage evolution of concrete better,give a better description of the micro damage mechanisms（essence）of mechanical behavior of concrete under tension and（or）compression stress or under cyclic tension-compression.