摘要
应用基于稳健估计和基于最小二乘法的三次多项式曲线模型,分析混凝土在养护28d期间抗压强度的变化规律,相比传统最小二乘法,稳健估计能够减小数据误差对拟合曲线的影响,从而达到与实际测量相吻合的效果,较准确地预测出混凝土在不同养护时期的抗压强度值。
Based on robust estimation and cubic polynomial curve model with least squares,the variation pattern is analyzed for concrete compressive strength during the 28 d curing period.Compared with traditional least squares method,robust estimation can reduce the influence of data error on the fitted curve so that it accords with the actual measurement.This can accurately predict the compressive strength of the concrete during different curing periods.
作者
张博
贾敏
吴兵
张恒嘉
ZHANG Bo;JIA Min;WU Bing;ZHANG Heng-jia(School of Mining Engineering,North China University of Science and Technology,Tangshan 063210,China)
出处
《唐山学院学报》
2019年第3期40-43,共4页
Journal of Tangshan University
关键词
混凝土
抗压强度
稳健估计
最小二乘法
concrete
compressive strength
robust estimation
least squares
