渗流影响下坝体和岩基应力场的分析模型研究

用等效面力和体力代替渗流影响下引起的湿胀效应的计算表达式，提出了数值分析法模拟湿胀效应的加载方法．此外，还提出了考虑坝体湿胀影响下的坝基应力场与渗流场的耦合分析模型，研制了相应的有限元分析程序．由实例分析了不同方法计算渗流影响时对岩基稳定的效应，并得出了在考虑应力场与渗流场耦合作用下，其计算成果更接近实际的结论．

An Analytical Model for the Stress Field of Dam Body and Rock Foundation under the Action of the Seepage Field

The calculating formulae using the equivalent surface and body force are derived to deal with the effect of seepage and the loading method using numerical analysis to simulate the swelling is developed. In addition, the corresponding coupled analysis model for the stress field and seepage field is proposed and the computer program is developed. The results of caluclation of an example show that the model proposed is more agreeable with actual conditions.