Abstract：In order to study the effect of temperature control measures when pouring concrete dams at high temperature and find suitable temperature control measures for high-temperature construction environments, combined with the actual project, using finite element method, we simulate the temperature stress during the construction and operation phases of a RCC gravity dam and analyze the temperature and stress field of the dam at different cooling water temperatures and pouring temperature. Results show that the dam temperature stress is greatly influenced by pouring temperature and cooling water temperature: in basic restraint areas, while the pouring temperature reduced from 25℃ to 23℃ and the cooling water temperature reduced from 20℃ to 15℃, the highest temperature in dam body reduced from 36.9℃ to 34.6℃ and the maximum temperature stress reduced from 1.64MPa to 1.40MPa. The result meets the requirement of temperature control and crack prevention of the dam. It can be seen that when concrete dams are built in high-temperature areas, the temperature and temperature stress of the dam can be effectively controlled at relatively high pouring temperature and cooling water temperature. The present result is of important value in simplifying temperature control measures, shortening the construction period and reducing the investment.
张晓飞,王晓平*,张昕,刘茜,黄宇,李守义. 热带高温地区碾压混凝土重力坝温控措施[J]. 排灌机械工程学报, 2019, 37(10): 863-869.
ZHANG Xiaofei, WANG Xiaoping*, ZHANG Xin, LIU Qian, HUANG Yu, LI Shouyi. Temperature control of RCC gravity dam in tropical high-temperature area. Journal of Drainage and Irrigation Machinery Engin, 2019, 37(10): 863-869.
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