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论文类型：会议论文

发表时间：2010-01-01

收录刊物：CPCI-S

页面范围：558-563

关键字：life-cycle design; freeze-thaw cycle; action spectrum; life predication

摘要：For the needs of life-cycle structure design, the prediction of concrete life under freeze-thaw action is analyzed by using the weather data of Harbin from 1963 to 2002, and the impact of freezing temperature to freeze-thaw damage was taken into account herein. By fitting the data with the (left) half-normal-distribution, weather data of Harbin was analyzed under an, occurrence condition of freeze-thaw cycle that the daily maximum temperature was higher than 0 degrees C and the minimum temperature was lower than -3 degrees C. Results showed that the freeze-thaw action could well obey the half normal distribution under different occurrence conditions of freeze-thaw cycle. Based on quantitative analysis on the frost-resistance of concrete and its damage equivalence, freezing-thaw life of a common concrete in water-saturated state in Harbin was predicted to be only 6 years.