本文選題：碾壓混凝土 + 干熱河谷　； 參考：《水力發(fā)電》2017年01期

【摘要】：通過研究觀音巖水電站夏季高溫時(shí)段和低溫時(shí)段不同氣候條件對碾壓混凝土溫控的影響,探討混凝土施工過程的精細(xì)化控制。首先,采用解析法研究機(jī)口到入倉過程低溫和高溫時(shí)段溫度回升情況;然后通過精細(xì)化的仿真計(jì)算,模擬碾壓施工的過程,考慮日氣溫變化,研究入倉到澆筑過程氣候差異對混凝土最高溫度的影響。結(jié)果表明,相同澆筑溫度下,澆筑過程的日氣溫變化對混凝土內(nèi)部最高溫度的影響僅有0.4℃,而運(yùn)輸過程高溫和低溫時(shí)段混凝土溫度回升值可相差6℃。因此高溫季節(jié)重點(diǎn)是通過優(yōu)化控制運(yùn)輸環(huán)節(jié)輔以改善倉面小氣候等措施,混凝土溫度回升最大可以改善6℃左右,最高溫度最多能降低2~3℃。
[Abstract]:By studying the influence of different climatic conditions on RCC temperature control in summer high temperature period and low temperature period of Guanyinyan Hydropower Station, the fine control of concrete construction process is discussed. First of all, the analytical method is used to study the rise of temperature during the period of low temperature and high temperature in the process from machine entrance to silo, and then through fine simulation calculation, the process of roller compaction construction is simulated, and the daily temperature change is taken into account. The effect of climate difference on the maximum temperature of concrete during the period from silo to pouring was studied. The results show that under the same pouring temperature, the influence of daily air temperature during pouring process on the maximum temperature of concrete is only 0.4 鈩，

本文編號：1893016