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基于传统的剩余推力法思路 ,推导了包括地表水、地下水、地震力、锚固力等外荷载综合作用下的边坡稳定性和剩余推力计算公式 ,以实例给出了剩余推力法在MicrosoftExcel中的实现方法 ,从中可以清晰看出剩余推力法的实质。比较了用同一安全系数但采用不同的折减方法所获得的剩余推力变化趋势。通过上述 4类荷载的敏感性分析 ,指出了剩余推力法应用中应注意的基本问题。运用Excel中加载宏“规划求解”工具 ,可以方便实现确定性框架下临界滑动面的随机搜索
Based on the traditional idea of residual thrust method, the formula of slope stability and residual thrust under the combined effect of surface water, groundwater, seismic force and anchorage force is deduced. The residual thrust method is given in the example Realize the method, from which you can clearly see the essence of the remaining thrust method. Compared with the same safety factor but using different reduction methods obtained residual thrust change trend. Through the sensitivity analysis of the above four kinds of loads, the basic problems that should be noticed in the application of residual thrust method are pointed out. Using the Excel Macro “Solver” tool to facilitate the random search of the critical slip surface under a deterministic framework