混凝土重力坝稳定渗流场数值模拟研究

利用热传导与水渗流的相似性，运用大型通用软件ANSYS的热分析模块对混凝土重力坝稳定渗流场进行模拟计算。以青海省某混凝土重力坝非溢流坝坝段为算例，在ANSYS计算过程中，采用死活单元技术，并对过渡区的单元进行传导矩阵修正，运用自由面适应网格方法，得到渗流场分布。为验证计算结果的准确性，将ANSYS结果与传统渗流分析软件Seep／W结果进行比较，结果表明ANSYS热分析模块对混凝土重力坝稳定渗流场进行数值模拟计算的可用性。

NUMERICAL SIMULATION ANALYSIS OF STABLE SEEPAGE FLOW OF CONCRETE GRAVITY DAM

Owing to the similarity between the thermal conduction and water seepage flowing , the large-scale general finite element software ANSYS acting as the platform, the computation of the stable seep flow field of concrete gravity dam is simulated by the ANSYS funcdon of temperature field analysis. This paper takes some concrete gravity dam located on Qinghai province as an example. In the process of ANSYS calculation, by applying the element birth or death technique, amending conductance matrix of the units in transition zone, and the method of Water Free Surface Adapting Grid System,we get the distribution of seepage field. A comparison between the ANSYS results and Seep/W results is made to conform the accuracy of the ANSYS calculation results. In conclusion,it is feasible to apply the ANSYS function of temperature field analysis in the computation of the stable seepage of concrete gravity dam.