This　study　established　a　Couple　Eulerian–Lagrange　model　to　simulate　monopile　vibratory　penetration　for　the　investigation　of　soil　plugging　effect　during　high-frequency　penetration　of　monopiles　for　wind　turbine.　Simulation　analysis　is　focused　particularly　on　soil　plugging　effect　of　a　large　diameter　monopile　during　vibratory　penetration　into　sand,　clay,　or　layered　soil.　The　results　of　the　numerical　simulation　show　that　soil　plugging　effect　is　unlikely　to　occur　during　monopile　penetration　into　the　clay　soil,　while　partial　soil　plugging　may　occur　during　the　sand　penetration.　Penetration　resistance　at　the　pile　toe　is　transferred　to　the　radial　stress　around　the　pile　wall.　At　a　critical　point　penetration　process,　internal　shaft　friction　becomes　larger　than　external　shaft　friction.　Moreover,　radial　pressure　factors　increase　during　partial　soil　plugging　effect.　For　layered　soil,　the　topsoil　not　only　has　great　influence　on　the　soil　plugging　effect,　but　also　affects　shaft　friction　in　the　subsoil　during　monopile　penetration.　©　2018,　©　2018　Informa　UK　Limited,　trading　as　Taylor　&　Francis　Group.