局部与整体水压法在水下饱和边坡稳定分析中的应用

APPLICATION OF THE PARTIAL AND WHOLE HYDRAULIC PRESSURE METHODS IN THE ANALYSIS OF SATURATED SLOPE STABILITY

针对以考虑土条侧向条间力来提高瑞典条分法的计算精度方法,作者基于物理学思想,提出了局部与整体水压法以进行水下饱和边坡稳定分析,并采用该法对瑞典条分法中一对相互矛盾的"真假李逵"式进行了辨析.指出李鬼式精度低的原因在于直接提取土条顶面和底面水压力沿着竖向的分量来建立平衡,而忽略了其沿着水平方向分力的影响,并证明了局部与整体水压法在提高有水边坡计算精度和便捷度时具有的普适性.

To improve the calculation accuracy of the Swedish slice method, the interaction forces are usually to be considered. Based on the physical nature, this paper proposes the partial and whole hydraulic pressure methods to analyze the stability of the saturated underwater slope. These methods are used to discriminate two conflicting formulas in the Swedish slice method. It is pointed out that one formula has a lower accuracy because the vertical components of the soil slice's top surface and the bottom water pressure are directly taken to build the equations of equilibrium, and the impact of the horizontal components is ignored. It is also pointed out that these two methods can be universally used to improve the calculation accuracy of the analysis of the saturated slope.