摘要
针对不同降温时段的无应力计测值反演的热膨胀系数具有随机性这一问题,采用无应力计的温度作为温度变形因子,3个指数函数进行组合作为自生体积变形因子,建立了无应力计测值的统计模型,提出了基于无应力计测值统计模型反演混凝土热膨胀系数以及分离自生体积变形分量。实践表明,基于无应力计测值统计模型反演的混凝土热膨胀系数稳定性较好。
To solve the problem of the random of thermal expansion coefficient inversion of no-stress measuring value during different cooling periods, the no-stress measuring value statistical model has been set up, in which, the no-stress temperature is taken as temperature deformation factor and the combination of three index functions is taken as self-grown volume deformation factor. The concrete thermal expansion coefficient inversion and the separation of coefficient self-grown volume deformation can be put forward based on the statistical model. The practice shows that the concrete thermal expansion coefficient based on the statistical model is stable.
出处
《水力发电》
北大核心
2012年第10期33-35,共3页
Water Power
基金
国家自然科学基金(51079079)
国家自然科学青年基金(51209124)
湖北省教育厅科学技术项目(D20101207)
关键词
热膨胀系数
无应力计
自生体积变形
统计模型
thermal expansion coefficient
no-stress meter, self-grown volume deformation
statistical model
