摘要
Abstract
MIDAS finite element analysis software was used to simulate and analyze the influence of different factors on the embankment de-formation when the rail transit line underpasses the railway station in Guiyang,Guizhou province.The results show that the theoretical value of vertical settlement of railway subgrade is basically consistent with the simulated value,which confirms the accuracy of the model.The settle-ment of railway subgrade under clay layer is 150%higher than that under pebble layer.When the tunnel buried depth is 25 m,the maximum settlement of the railway roadbed is 15.2%lower than that when the tunnel buried depth is 11 m.When the tunnel two-way horizontal distance is 25 m,the settlement of railway roadbed is 56.9%lower than that when the tunnel two-way horizontal distance is 8 m.The higher the bear-ing capacity of the underlying soil layer,the greater the tunnel buried depth and the greater the two-way horizontal distance,the better the set-tlement control effect of the railway roadbed.关键词
盾构隧道/下穿铁路路基/施工过程/路基变形Key words
Shield tunnel/Underpass the railway roadbed/Construction process/Subgrade deformation分类
交通工程
