| 预测全级配大坝混凝土弹性模量的三相模型 |
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| 引用本文： | 郑丹,李文伟.预测全级配大坝混凝土弹性模量的三相模型[J].水利水电科技进展,2009,29(4):14-17. |
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| 作者姓名： | 郑丹 李文伟 |
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| 作者单位： | 1. 中国长江三峡工程开发总公司,湖北,宜昌,433002;清华大学水利水电工程系,北京,100084;重庆交通大学河海学院,重庆,400074
2. 中国长江三峡工程开发总公司,湖北,宜昌,433002 |
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| 基金项目： | 国家自然科学基金，中国博士后科学基金 |
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| 摘 要： | 在分析传统混凝土两相复合材料弹性模量计算模型不足的基础上,考虑混凝土中界面过渡区的影响,分析界面过渡区的体积与骨料体积分数、骨料颗粒级配和界面过渡区厚度之间的关系,建立预测混凝土弹性模量的三相复合材料模型,并在此基础上计算全级配混凝土与湿筛混凝土的弹性模量,并与已有试验结果进行比较,吻合良好。分析全级配与湿筛混凝土弹性模量比值与骨料及水泥基体弹性模量比值的关系,给出了随龄期变化时两者弹性模量比值的变化规律。
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| 关 键 词： | 水工混凝土 全级配 湿筛 弹性模量 |
| 修稿时间： | 2009/9/2 0:00:00 |
Three-phase model for predicting elastic modulus of full-grade dam concrete |
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| ZHENG Dan,LI Wen-wei.Three-phase model for predicting elastic modulus of full-grade dam concrete[J].Advances in Science and Technology of Water Resources,2009,29(4):14-17. |
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| Authors: | ZHENG Dan LI Wen-wei |
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| Affiliation: | ZHENG Dan1,2,3,LI Wen-wei1(1.China Three Gorges Project Corporation,Yichang 443002,China,2.Department of Hydraulic and Hydropower Engineering,Tsinghua University,Beijing 100084,3.School of River and Ocean Engineering,Chongqing Jiaotong University,Chongqing 400074,China) |
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| Abstract: | Based on the shortcomings of the existing traditional two-phase model of elastic modulus for two-phase composites,and considering the influence of the interface transition zone(ITZ) in concrete,the relationships between volume percent of ITZ and aggregate and the thickness of ITZ and aggregate grading are analyzed.A three-phase model for predicting the elastic modulus is established. The elastic modulus of full-grade and wet sieving concrete were calculated with this model,and the results are in good agreem... |
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| Keywords: | hydraulic concrete full grade wet sieving elastic modulus |
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