重载铁路高路堤沉降预测及影响因素分析

With the increase in the volume and the delivery times of heavy-haul railway, the settlement of embankment developes rapidly, thus the method of the settlement prediction of heavy-haul embankment is essential. According to the typicle conditions of Ba-Zhun Railway, a settlement prediction model which is based on empirical formulae and Abaqus nonlinear dynamic finite element method is proposed. And the parameter analyses on yearly settlement volume of embankment are carried out. The results show that the settlement of heavy-haul railway embankment rises rapidly in the first year, the total settlement of embankment is approximately linear because of the linear increase of the settlement of the ballast; the effect of ballast parameters on embankment settlement is greater than that of embankment surface layer; decreasing ballast thickness and increasing its modulus can promote the drop in embankment settlement.