| 大体积混凝土水化热分析与处理方法探讨 |
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| 引用本文： | 王月华.大体积混凝土水化热分析与处理方法探讨[J].泰州职业技术学院学报,2012,12(4):45-48. |
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| 作者姓名： | 王月华 |
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| 作者单位： | 泰州职业技术学院建筑工程系,江苏泰州,225300 |
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| 摘 要： | 文章以60×40×4大体积混凝土采用整体一次性浇筑方案为基础,以一维差分法计算了混凝土的温度场,并用建筑工程中常用的拉应力计算公式计算了最大拉应力,结果显示一次整体浇筑方案有产生贯穿性裂缝的风险,没有达到安全系数k=1.15的要求,需要采取措施控制温升产生的拉应力。因此,在降低混凝土水泥用量的基础上,采用了外径为1.25cm钢管、水平间距为1.70m、铅直间距为1.60m（两层）的方案,通过循环水降低大体积混凝土凝结过程中水化热产生的温升,并提出温度应力监控措施,以便及时采取温控措施,实现信息化施工。
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| 关 键 词： | 大体积混凝土 水化热 温度场 冷却水管 |
Analysis and Treatment of Big Volume Concrete Heat of Hydration |
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| WANG Yue-hua.Analysis and Treatment of Big Volume Concrete Heat of Hydration[J].Journal of Taizhou Polytechnical Institute,2012,12(4):45-48. |
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| Authors: | WANG Yue-hua |
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| Institution: | WANG Yue-hua(Taizhou Polytechnic College,Taizhou Jiangsu 225300,China) |
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| Abstract: | The paper,taking a 60×40×4 volume concrete as example,calculates the temperature field using one dimensional finite difference method.Max tensile stress is calculated with tensile stress equation,which shows the potential of penetrating crack——not meeting the safety factor k=1.15.Measures should be taken to control the tensile stress related to temperature rise.Steel tubes（with circulating water） of 1.25 dia were employed with1.7m horizontal distance and 1.6m vertical distance（2 layers） in concrete to reduce temperature rise caused by heat of hydration,with temperature stress control to online check it. |
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| Keywords: | big volume concrete heat of hydration temperature field cooling pipe |
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