基于地层生死技术的条分法在路基稳定分析中的应用

条分法作为一种成熟、有效且简便的稳定性分析方法，在工程中得到了广泛的应用。对此，在经典条分法的基础上，采用地层生死技术，可以便捷地在模型中"杀死"所开挖的地层，进而模拟开挖工程对路基稳定性的影响。分析结果表明:基于地层生死技术的条分法，能够满足工程精度的要求，且其效率得到较大程度的提高，特别是对于需要进行开挖过程稳定性分析的工程，分析效率提升极为显著；此外对于一些复杂工况，比如在开挖工程和路基加固方案的耦合工况，采用地层生死技术进行稳定分析能够得到可靠的分析结果。

Application of Slices Method in Subgrade Stability Analysis Based on Element Birth and Death Technology of Stratum

Slices method, as a mature, effective and simple method for stability analysis, is widely used in engineering. Based on classical slices method, element birth and death technology of stratum was used to allow the excavated stratum to be ‘killed’ easily in the model so as to simulate the effect of excavation on the subgrade stability. The result of analysis shows that the slices method, based on technology of element birth and death, may meet the engineering accuracy requirement with the efficiency improved to a relatively great extent, especially for the engineering requiring excavation stability analysis, the analysis efficiency is improved dramatically; in addition, for some complex cases, such as coupling case in excavation and subgrade reinforcement scheme, the element birth and death technology of stratum may obtain reliable result in stability analysis.