为提高边坡安全系数的计算精度,降低其计算复杂度并考虑孔隙水压力的影响,对应用较为广泛的极限平衡理论——瑞典条分法进行了优化和改进,即考虑土体孔隙水压力的作用,得到其优化模型,然后转化加法为积分,得到其积分计算模型.在此基础上,通过实例对比验证了考虑孔隙水压力的积分计算模型的优越性和实用性,并导出边坡安全系数计算的通用计算模型.结果表明:积分计算模型是通用计算模型的一个特例,在五个假定的前提下,无需进行土条划分和提前预估滑动面的形式,并考虑了孔隙水压力,解决了边坡安全系数计算精度低且复杂度高的问题;通用计算模型在四个假定的前提下,进一步解决了“异形坡面”边坡的安全系数计算;这些研究内容为边坡稳定性分析提供了一定的参考.
Aiming at improving the calculation accuracy and reducing the complexity of slope stability coefficient, optimization and improvement on the popularly used Sweden Slice Method were studied, namely considering the pore water pressure and transforming superposition into integral, thus obtaining the Integrated Calculation Model. Finally, the excellence and feasibility of the model was verified, and the General Calculation Model was also exported. The results show: the Integrated Calculation Model is one special example for General Calculation Model, there's no soil slice and prediction of sliding face, and the pore water pressure was also considered, thus solving problems on calculation of slope stability; the General Calculation Model helps settle the stability coefficient for shape-special slope further under the four preconditions.