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以郑西高速铁路客运专线路堑段铁路黄土边坡工程实例为背景,经过适当简化处理,利用数值模拟软件FLAC建立了轨道-路基-黄土边坡系统动力分析计算模型,并对不同列车运行速度下黄土边坡的扰动程度及边坡稳定性进行了分析。结果表明,黄土边坡的扰动程度随列车运行速度的增大而增大,稳定性随列车速度的增大而减小。
Taking the engineering example of railway loess slopes on the railway cutting section of Zhengzhou-Xi’an high-speed railway for passenger dedicated line as the background, the dynamic analysis and calculation model of the rail-embankment-loess slope system is established by using numerical simulation software FLAC after proper simplification. Loess slope disturbance and slope stability are analyzed. The results show that the disturbance degree of loess slopes increases with the increase of train running speed, and the stability decreases with the increase of train speed.