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工程力学  2015 

早龄期水泥混凝土拉伸徐变实测与模型

, PP. 104-109

Keywords: 早龄期,拉伸徐变,直接拉伸强度,拉伸弹性模量,松弛模量,混凝土

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Abstract:

该研究研发了混凝土早龄期拉伸徐变测量装置,并能够测量直接拉伸强度和拉伸弹性模量。对测得的拉伸徐变进行模拟,采用现存模型对数据进行验证,认为现存模型不能够精确预测混凝土早龄期拉伸徐变。根据实测拉伸徐变数据对现存模型进行修正,建立了更能代表实际工程情况、用于混凝土结构物应力计算的拉伸徐变模型,提供了可用于结构物应力计算的松弛模量。

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