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考虑超孔隙水压和滑动面几何形状改变对地震滑坡滑动过程的影响,推导纽马克法与瑞典条分法结合起来的滑距计算方法(即改进的NS法)。该方法可计算沿软弱夹层滑动的大滑距地震滑坡。通过对比改进的NS法和改进的NJ法所得计算结果的异同,分析2种计算方法的特点。此外,还分析地下水位、内摩擦角和土条宽度对计算结果的影响。
Considering the effect of excess pore water pressure and geometry change of the sliding surface on the landslide sliding process, the calculation method of the sliding distance (that is, improved NS method) combining the Newmark method with the Swedish striping method is derived. The method can be used to calculate the large sliding landslide along the weak interbeds. By comparing the results of the improved NS method and the improved NJ method, the similarities and differences between the two methods are analyzed. In addition, the effect of groundwater level, internal friction angle and soil width on the calculation results is also analyzed.