中文摘要：

为解决混凝土损伤参数的尺寸效应问题,通过试验获得几组混凝土压缩试件的损伤参数。基于灰色理论进行混凝土压缩损伤参数的尺寸效应研究,建立预测方程,以试验测得的小试件初始损伤和峰值损伤数据为基础,预测大试件的初始损伤和峰值损伤。结果表明,大体积混凝土的初始损伤和峰值损伤均随混凝土尺寸的增大而增大,但最终均趋近于一个固定值,初始损伤趋近于0.182 7,峰值损伤趋近于0.352 6。

英文摘要：

To solve the size effect problems of damage parameters of concrete,several sets of damage parameters of concrete compressive specimens were obtained through experiments.Based on the gray theory,the size effect of compressive damage parameters of concrete was studied.Relevant equations based on the initial and peak damages of small specimens were established to predict those of large specimens.The results show that the initial and peak damages of large specimens increase with the increase of concrete size.They tend to certain values to the end,that is,0.182 7 and 0.352 6 for the initial and peak damages,respectively.