Research on Inspection Index and Standard of Compaction Quality in Special Parts of Railway Subgrade
Special parts of railway subgrade(abutment cone,cable trough and gutter base,foundation treatment cushion,backstop structure filter layer)are the weak points of subgrade engineering.At present,the detection methods and compaction standards of the above special parts of the subgrade are not perfect or their operability needs to be improved.Based on the relevant technical research and theoretical analysis methods at home and abroad,this paper analyzes and studies the compaction quality control parameters for the special parts of the railway subgrade,and puts forward the dynamic deformation modulus Evd index to control the compaction quality of the special parts of the railway subgrade.Based on field comparative test analysis,the standard value of dynamic deformation modulus Evdcontrol for special parts of subgrade is proposed.
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