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混凝土结构,尤其是水工混凝土结构经常处于环境温度的影响下。但是,环境温度的变化是随机的,并在结构内引起随机温度应力。本文将随机过程的数学理论运用于结构温度应力分析,提出了一种分析随机温度应力的新方法——直接法。干缩问题与温度问题性质类似,并都服从相同的方程。因此,对随机收缩应力问题也一并加以探讨,文中通过实例阐明了随机温度或干缩应力随时间而波动的特性。
Concrete structures, especially hydraulic concrete structures, are often under the influence of ambient temperature. However, the change in ambient temperature is random and causes random temperature stress within the structure. In this paper, the mathematical theory of stochastic process is applied to the structural temperature stress analysis, and a new method of analyzing the random temperature stress is proposed. The shrinkage problem is similar in nature to the temperature problem and all obey the same equation. Therefore, the problem of stochastic shrinkage stress is also discussed. The characteristics of random temperature or dry-shrinkage stress fluctuate with time are illustrated by examples.