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在计算坝体温度应力时,要用到坝体温度场及其变化情况,它可由两种方法获得,一是由埋设在坝内的测温仪器测绘温度场,二是根据热传导原理计算温度场。当使用理论方法计算时,不仅需要坝区气温资料,库水温度资料,还需要坝体混凝土的热性能参数,如导温系数、导热系数、比热等。对于重要的混凝土工程,导温系数一般要进行实地测量。本文通过介绍石门拱坝导温系数的测量与计算,对导温系数的计算方法进行探讨。
In the calculation of dam temperature stress, the dam body temperature field and its changes to be used, it can be obtained by two methods, one is measured by the thermometer buried in the dam mapping temperature field, the second is based on the principle of heat transfer temperature field calculation . When using the theoretical method, not only the dam temperature data, the reservoir water temperature data but also the thermal performance parameters of dam concrete, such as thermal conductivity coefficient, thermal conductivity, specific heat and so on. For important concrete works, the temperature coefficient is generally measured on the spot. This paper introduces the measurement and calculation of the thermal conductivity coefficient of Shimen arch dam, and discusses the calculation method of the thermal conductivity coefficient.