边界元法在非直立坝面动水压力分析中的应用

Application of boundary element method to hydrodynamic pressure on non-vertical surface of dams

基于边界元法理论,建立了非直立坝面动水压力计算模型。通过算例验证了模型的正确性。计算结果表明,倾斜坝面动水压力小于直立坝面,坡面越缓,动水压力越小,最大值出现在距坝锺0.2倍坝高处,模型解答与Chwang解析解非常吻合,计算精度不受坝面倾角影响。

Based on the boundary element method theory,a calculation model for hydrodynamic pressure on non-vertical surface of rigid dams was established.Numerical example was given for the verification of its correctness.The results show that the hydrodynamic pressure on sloping dams is smaller than that on vertical dam,The smaller the angle of upstream face of dam with horizontal level,the smaller the hydrodynamic pressure is.The maximum hydrodynamic pressure point is about one fifth of dam height far from the dam heel.The hydrodynamic pressure coefficients obtained agree very well with those by Chwang.The angle of upstream face of dam has not influence on the convergence of the model.