Based　on　the　opinion　that　the　collapse　of　the　Daikai　station　is　caused　by　insufficient　deformation　capacity　of　the　middle　column,　the　failure　mode　of　the　middle　column　is　optimized,　and　a　new　segmental　cored　column　is　proposed.　3D　nonlinear　finite　element　simulations　are　established　by　using　ABAQUS.　The　horizontal　ultimate　deformation　capacity　and　actual　working　state　are　obtained　through　the　static　analysis.　The　seismic　simulation　is　carried　out　for　the　Daikai　station　with　and　without　segmental　cored　column.　Then　differences　in　seismic　performance　are　analyzed　considering　the　deformation　of　the　structure　at　typical　time,　horizontal　and　vertical　seismic　responses　of　the　middle　column　and　sidewalls.　The　results　show　that　the　segmental　cored　column　has　excellent　horizontal　deformation　capacity.　The　deformation　of　the　Daikai　station　with　segmental　cored　column　is　reduced　obviously,　the　whole　structure　is　well　preserved　and　no　collapse　occurs.　The　middle　columns　are　in　safe　working　condition.　The　horizontal　seismic　responses　of　sidewalls　are　reduced,　and　the　vertical　settlement　of　the　structure　is　also　greatly　reduced.　The　concept　of　failure　mode　control　makes　a　significant　active　effect　on　the　seismic　performance　of　the　underground　structures.　©　2019,　Editorial　Office　of　Chinese　Journal　of　Geotechnical　Engineering.　All　right　reserved.