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利用传统极限平衡法分析路堤稳定性时需要预先假定路堤的潜在滑动面。为确定粉煤灰路堤的破坏形式,首先以平面滑动面为假设,在此假设下求出路堤安全系数的一般解,再结合依托工程对特定粉煤灰路堤进行分析计算,并和同济曙光、SLOPE、PLAXIS、FLAC等基于平衡理论或数值模拟的岩土软件的计算结果进行对比,结果表明粉煤灰路堤的破坏形式为近似圆弧滑动破坏,进行稳定性分析时采用简化毕肖普法是合适的,而用平面滑动面作为稳定性分析的假设,分析结果的误差很大。
When analyzing the stability of embankment using the traditional limit equilibrium method, the potential sliding surface of the embankment needs to be pre-assumed. In order to determine the form of damage of fly ash embankment, the plane sliding surface is first assumed. Under this assumption, the general solution of embankment safety factor is obtained. Combined with the engineering calculation, the fly ash embankment is analyzed and calculated. And with the dawn of Tongji, SLOPE, PLAXIS and FLAC. The results show that the damage form of fly ash embankment is approximate circular arc sliding failure, and the simplified Bishop method is suitable for stability analysis , But using the plane sliding surface as the assumption of stability analysis, the error of the analysis result is very large.