Simulation Analysis of Temperature Field of Longtan Hydropower Station RCC Gravity Dam

摘要

In this paper, the chemical reaction rate is used to describe the combined effects of placement temperature and time on the adiabatic temperature rise. A concrete analytic test model is built and computed at different placement temperatures and different boundary con-ditions by FEM, and the rises of temperature of centre point in the model are studied. Then the non-linear heat conduction equation based on the equivalent time theory is applied to sim-ulate and analyze the temperature fields of LongTan RCC Gravity Darn. The conclusions are summarized as followings: (1) The maximum temperatures and adiabatic rise curves of con-crete are remarkably influenced by the placement temperatures; (2) The new theory and the non-linear heat conduction equation are more eongruent with engineering practice when ap-plied to calculate temperature fields, with an average increase of 6.7% of temperature results compared with the traditional theory; (3) The maximum temperature fields within the dam are correlated with the air temperature, and some necessary thermal control measures are re-quired, when the RCC dam is constructed in summer.