Abstract：Research purposes: As intercity rail transit and passenger dedicated line pass through the developed areas，the land resource in these areas becomes less and less，so the track requires higher standard for the post － construction settlement of the subgrade． In this paper，an embankment U － shaped structure is presented． By using it，the land resource can be saved，the embankment stability can be enhanced and the post － construction settlement of the subgrade can be cut． It can provide the reference to the subgrades of the intercity rail transit and passenger dedicated line built in the plain area with bad geological conditions．
Research conclusions: The load bearing and deformation laws of the embankment U － shaped structure are analyzed to obtain the change law of the stress － strain of the bottom plate and side － wall corresponding to the structure height and thickness． The moments of X axial direction of the bottom plate and side － wall are the control moments． The max moment of bottom plate is on the side － wall，and the max moment of side － wall is on bottom． The embankment U － shaped structure has features of higher whole stability and less deformation and it can control the subgrade deformation effectively．
张劲松 郭 超. 路堤式 U 型结构有限元分析[J]. 铁道工程学报, 2012, 29(2): 13-18.
ZHANG Jin － song，GUO Chao. Analysis of Embankment U － shaped Structure with Finite Element Method. 铁道工程学报, 2012, 29(2): 13-18.
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2012, Vol. 29 
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