自密实混凝土梁长期变形的灰色动态拓广模型预测  

Application of extended grey dynamic model to prediction of long-term deformation of self-compacting concrete beams

作　　者：刘小洁[1] 余志武[1] 

机构地区：[1]中南大学土木建筑学院,湖南长沙410075

出　　处：《铁道科学与工程学报》2006年第5期36-40,共5页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(50278097)

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。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.

关 键 词：自密实混凝土梁 变形 灰色动态拓广模型 

分 类 号：TU375.1[建筑科学—结构工程]