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首页> 外文会议>Forth International Symposium on Roller Compacted Concrete (RCC) Dams; Nov 17-19, 2003; Madrid, Spain >Thermal measurement and analysis of large Roller Compacted Concrete dam
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Thermal measurement and analysis of large Roller Compacted Concrete dam

机译：大型碾压混凝土坝温度测量与分析。

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摘要

A case of temperature control of an actual large RCD dam is investigated in this paper. The dam that has a volume of approximately 2 million cubic meters is designed to prevent thermal stress cracking in detail. Temperature of concrete in the dam has been monitored by optical fiber sensor system since construction time. According to the thermal data, temperature of concrete placed in summer was higher than that of in winter. The difference of temperatures had been remained for many years. The temperature of internal concrete rose for a longer time and reached higher than expected from adiabatic data of laboratory tests. Changing of temperatures in the dam can be simulated by two-dimension FEM. The simulation shows vertical tensile stresses on surface concrete during construction time and the stresses decrease by time and by reserving water.
机译：本文研究了一个实际的大型RCD大坝的温度控制情况。大坝的体积约为200万立方米，旨在防止热应力的产生。自施工以来，大坝中的混凝土温度已通过光纤传感器系统进行了监控。根据热数据，夏季放置的混凝土温度高于冬季。温差已经保持了多年。内部混凝土的温度上升的时间更长，达到的温度高于实验室测试的绝热数据。大坝中温度的变化可以通过二维有限元模拟。模拟显示了在施工过程中表面混凝土的垂直拉应力，应力随时间和蓄水量而减小。

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