L型墙对邻近铁路沉降影响分析方法对比研究

Comparative study of analytical method about the influence of L-shaped wall on the settlement of adjacent railway

为研究解析法与数值模拟方法计算桩基L型墙路基对邻近运营铁路路基沉降影响结果的差异,以某新建高速铁路引入既有高铁车站为例,采用解析法(L/3法)和三维数值模拟方法(Midas GTS),分析研究了不同工况下,桩基L型墙对邻近既有高铁车站路基沉降的影响和分布规律。结果表明,采用桩基L型墙路基方案在减小地基沉降和消除路基放坡对既有路基附加荷载影响等方面具有明显的效果。

In order to study the difference between the analytical method and the numerical simulation method to calculate the impact of the pile foundation L-shaped wall embankment on the settlement of the adjacent railway embankment. This article takes the introduction of a new high-speed railway into an existing high-speed railway station as an example, using analytical method(L/3 method) and three-dimensional numerical simulation method(Midas GTS) to analyze and study the influence and distribution law of the pile foundation L-shaped wall on the settlement of the adjacent existing high-speed railway station subgrade under different working conditions. The result shows that the use of the pile foundation L-shaped wall subgrade scheme has obvious effects in reducing the settlement of the foundation and eliminating the influence of the subgrade grading on the additional load of the existing subgrade.