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传递系数法假定条块作用力方向与上一条块底滑面平行。相关文献指出基于这样的假设可能导致计算结果偏大,偏于不安全。基于此,对条间作用力方向角进行修正:假定条间力方向角为上一条块底滑面倾角与未知常数λ(推力方向修正系数)的乘积,通过考虑边坡整体力矩平衡求解修正系数,进而求得边坡稳定系数,对传递系数法进行改进。通过经典算例及工程实例验算,结果表明,改进法计算结果较传统传递系数法更精确,物理过程更合理,能够满足工程精度要求。
The transfer coefficient method assumes that the direction of the force of the bar is parallel to the slip of the last bar. Relevant literature points out that based on such assumptions may lead to large calculation results, biased to unsafe. Based on this, the force angle between the bars is corrected: Suppose the angle between the bars is the product of the slip angle of the last block and the unknown constant λ (thrust direction correction coefficient), and the correction coefficient is calculated by considering the overall moment balance of the slope , And then find the slope stability coefficient, to improve the transfer coefficient method. The results of classical calculation and engineering example show that the result of the improved method is more accurate than the traditional method of transfer coefficient, the physical process is more reasonable and can meet the requirements of engineering accuracy.