正确区分和计算滑坡抗滑力与下滑力的重要性

The Importance of Correctly Distinguishing and Calculating the Anti-sliding Force and Down-sliding Force of Landslide

针对包括现行规范在内的将滑坡抗滑力与下滑力不加严格区分和计算的普遍现象,首先从力学角度阐述了抗滑力与下滑力的界定标准是与滑动方向相反还是相同,再用稳定系数计算公式说明抗滑力和下滑力是比值关系、下滑力不能与抗滑力进行加减运算,并用简单的算例证明了正确区分和计算抗滑力与下滑力的重要性,同时也证明了基于强度储备或强度折减的计算方法在原理上是不严谨的,只有原始的传递系数法是比较正确的,为滑坡稳定性和推力的正确计算提供了参考,也弥补了目前规范对传递系数法的一些误解和解释不足.

According to the phenomenon,including the current specifications,which can not strictly distinguish and calculate the anti-sliding force and down-sliding force,first of all,the definition of the anti-sliding force and down-sliding force standard,which is the opposite or the same with the sliding direction,is elaborated from the perspective of mechanics,then the ratio between the antisliding force and down-sliding force is illustrated by the stability coefficient formula,and the down-sliding force can not be added and subtracted with anti-sliding force.Finally,the importance of correctly distinguishing and calculating the anti-sliding and down-sliding force of landslide is demonstrated by a simple calculation.Meanwhile,it is proved that the calculation method based on the strength reserve or strength reduction is wrong in principle,and only the original transfer coefficient method is correct.And it provides a reference for the correct calculation of stability and thrust of landslide and also makes up for the lack of some misunderstandings and insufficient explanations of transfer coefficient method in current specifications.