【摘要】 采用灰色系统模型以及灰色动态拓广模型考虑荷载持续时间对混凝土徐变的影响对6根自密实混凝土梁的长期变形进行预测研究。结果表明:采用灰色动态拓广模型所得结果与试验结果较吻合,该法具有计算简单、预测精度高且不需要大量的试验数据等特点,能方便地用于实际。更多还原

【Abstract】 The grey model and extended grey dynamic model considering the influence of loading time on creep of concrete were used to predict the long-term deformation of 6 self-compacting concrete beams on the basis of short-term experimental data.The results show that the predicted values by extended grey dynamic model are in good agreement with the tested ones,and this method is simple,feasible and has high precision.更多还原