| 混凝土板温度收缩钢筋配筋建议 |
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| 引用本文： | 李磊. 混凝土板温度收缩钢筋配筋建议[J]. 土木建筑与环境工程, 2004, 26(4): 45-50 |
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| 作者姓名： | 李磊 |
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| 作者单位： | 华东理工大学,高等技术学院,上海,200237 |
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| 摘 要： | 通过两端嵌固板的简单模型讨论了由混凝土干缩引起的受拉裂缝形成机理以及平均裂缝宽度、间距和数量的计算方法。利用该模型，通过算例比较中国GB50010-2002、美国ACl318-02、澳大利亚AS3600-1988三国规范关于混凝土板温度收缩钢筋的最小配筋率要求，并对此提出了设计建议。
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| 关 键 词： | 钢筋混凝土 预应力混凝土 板 受拉裂缝 温度收缩钢筋 |
| 修稿时间： | 2004-03-20 |
Recommendations on Shrinkage and Temperature Reinforcements in Concrete Slabs |
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| LI Lei. Recommendations on Shrinkage and Temperature Reinforcements in Concrete Slabs[J]. Journal of Civil,Architectrual & Environment Engineering, 2004, 26(4): 45-50 |
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| Authors: | LI Lei |
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| Abstract: | The mechanism of shrinkage cracking is discussed with a simple member, which is fully restrained and subjected only to an axial restraining force caused by shrinkage, while a simple procedure is presented for the determination of the number and spacing of the cracks and the average crack width. With the simple model, some examples are shown to compare the provisions for minimum shrinkage and temperature reinforcement in GB 50010-2002 Code, ACI 318-02 Code and AS 3600-1988 Code. The results show that the provisions in GB 50010-2002 Code are too weak in comparison with the others. Finally, some recommendations are proposed. |
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| Keywords: | reinforced concrete post-tensioned concrete slabs direct tension cracking shrinkage and temperature reinforcement |
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