| 砼收缩与徐变的实用数学表达式 |
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| 引用本文： | 龚洛书,惠满印,杨蓓.砼收缩与徐变的实用数学表达式[J].建筑结构学报,1988,9(5):37-42. |
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| 作者姓名： | 龚洛书 惠满印 杨蓓 |
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| 作者单位： | 中国建筑科学研究院混凝土研究所
,中国建筑科学研究院混凝土研究所
,中国建筑科学研究院混凝土研究所 |
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| 摘 要： | 本文利用我国的原材料,通过系统的大量试验研究,运用数理统计的方法,和系数叠加原理,提出普通砼和轻骨料砼收缩与徐变的多系数表达式。其中包括在标准状态下砼收缩与徐变的基本方程与环境相对湿度,构件截而尺寸、养护方法、加荷龄期、粉煤灰掺量及砼强度等级一系列影响系数。可用它来确定普通砼及轻骨料砼的收缩值、徐变系数或徐变度等结构计算参数,有实用价值,可供从事砼材料研究、结构设计计算的科技人员参考。
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| 收稿时间： | 1988-10-05 |
| 修稿时间： | 1988-10-05 |
Practical Mathematical Expressions for Creep and Shrinkage of Concrete |
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| Gong Lueshu,Hui manyin,Yang bei.Practical Mathematical Expressions for Creep and Shrinkage of Concrete[J].Journal of Building Structures,1988,9(5):37-42. |
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| Authors: | Gong Lueshu Hui manyin Yang bei |
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| Affiliation: | Gong Lueshu,Hui manyin,Yang bei (Institute of Concrete,China Academy of Building Research) |
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| Abstract: | This paper presents expressions for estimating creep and shrinkage of concrete and lightweight aggregate concrete using mathematical statistics and superposition of influential factors based on Chinese law materials and through tests. The expressions include mainly the basic formulas of creep and shrinkage of concrete and their influential factors due to relative hamidity, size of member, curing method, age of loading, percentage of fly ash and concrete strength. They can be used to predict the values of shrinkage, specific creep, creep coefficient and other structural parameters for conventional and lightweight aggregate concrete. The expressions given in the paper have a practical availability for engineers in the field of concrete research, structural design and construction. |
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