滑坡稳定性传递系数计算法的改进

对目前普遍采用的基于强度储备法及超载法推导的应用于滑坡稳定性及滑坡推力计算的两种传递系数法进行了讨论，认为基于强度储备法的传递系数法方法对稳定性计算是适合的，但其计算的滑坡推力偏小，与目前在考虑防治工程可靠度的基础上采用超载法原则不相符，不利于防治工程的稳定；基于超载法的传递系数法方法在进行稳定性计算时，允许条块间出现的拉应力，某些情况下所计算的稳定系数偏大，由此带来安全隐患。基于此，本文以超载法为基础对上述两种方法进行了改进，推导了改进的传递系数法，并采用两个实例进行了验证。

IMPROVING ON TRANSFER COEFFICIENT METHOD APPLIED TO LANDSLIDE STABILITY ANALYSE AND LANDSLIDE THRUST VALUE CALCULATION

In this paper, two transfer coefficient methods, based on deriving from strength reserve method and overloading method, which are commonly applied to landslide stability and landslide thrust calculating at present, are discussed. Strength-reserve-method-based transfer coefficient method is appropriate for landslide stability calculation, but the landslide thrust value calculated using this method is lower comparing with overloading method. Also the method can be not used to determine the stability of control project. However, the stability factor values calculated from over-loading-method-based transfer coefficient in certain cases are higher, which would bring about potential safety hazards. For the above-mentioned reasons, the improvement based on the over loading method is carried out, and advanced transfer coefficient methods were developed. Finally we present two examples to demonstrate that.