Based on the earthquake damage investigation results of reinforced concrete frame in the Wenchuan earthquake

the corner column area of the first floor including frame column and adjacent joint is chosen as the key component.The finite element analysis software ABAQUS is used.The displacement at the removed position and axial load of the adjacent column are selected as reference data

and the collapse resistant capability of the steel reinforced ultra high strength concrete（SRUHSC）frame after key component failure is analyzed.At the same time

effects of building height

earthquake wave direction

infilled wall

and strength grade of column concrete on the collapse resistant capability of residual structure are discussed.The results show that:（1）Vertical displacement at the removed position falls slightly

axial load of the adjacent column increases significantly

and frame structure collapse will happen easily with the increase of building height.（2）The shake of the residual structure becomes more obvious

seismic performance reduces

and the collapse will appear easily under the Y direction earthquake ground motion after the corner column area failures.（3）Vertical displacement at the removed position is small

the shake becomes insignificant

axial load of the adjacent column grows slowly

and the collapse resistant capability can be improved after the infilled wall is installed in the frame structure.（4）The vertical displacement at the removed position can be decreased and the collapse resistant capability can be increased after higher strength concrete column is used in frame structure

especially when the steel reinforces the ultra high strength concrete column.