混凝土力学参数与声发射参数之关系研究

Research on Relationship between Mechanics Parameter and Acoustic Emission Parameter of Concrete Material

通过对混凝土和钢纤维混凝土进行单轴压缩试验和声发射试验研究,首先应用Dai公式分析了声发射事件数与应力之间的关系,验证了其适用性和有效性;其次提出了声发射概率密度函数的概念,并且将其应用到混凝土材料的损伤评估,分析了不同荷载水平的损伤过程。

Uniaxial compress experiment and acoustic emission （AE） experiment were studied on concrete and steel fiber reinforced concrete. Firstly, relationship between mechanics parameter and acoustic emission parameter of concrete material were analyzed by using Dai formula, then the applicability and validity were proved. Secondly, conception of AE probability density function （PDF） was put forward, which was applied to evaluated damage of material, and the damage process was analyzed during the different load ratio.