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针对三维边坡稳定分析中的滑裂面构造问题,提出使用双二次Bezier曲面构造三维滑裂面的思路,以控制平面加控制点的构造方式进行实现,并详细推导了其计算方法。该类滑裂面比椭球面增加了两个控制参数,其自由度较高,实际应用证明要比目前广泛使用的椭球面更加贴近真实滑裂面。
Aiming at the problem of slip surface structure in 3D slope stability analysis, the idea of using double quadratic Bezier surface to construct three-dimensional sliding surface is proposed. The control plane and control point are constructed and the calculation method is deduced in detail. This kind of slip surface increases two control parameters than the ellipsoid, which has higher degree of freedom. The practical application proves that it is closer to the real slip surface than the widely used ellipsoid.