A new tiecolumn such as corecolumn

named as coretiecolumn

for the substitution of castinplace tiecolumn was used to improve seismic performance of mansonry structures. Pseudostatic testes of 11 wall specimens including 6 walls constrained by coretiecolumns

2 walls constrained by castinplace tiecolumns

and 3 walls without constraints were carried out to study the seismic deformation capacity of mansonry walls with coretiecolumns. The skeleton loaddisplacement curves and the normalized skeleton curves

displacement ductility factors，drift angels of the specimens were analyzed and compared. The effects of the level of vertical compress load

aspect ratio and the wall style on the deformation capacity of the wall with coretiecolumns were distinguished. It is shown that the constraints effects of coretiecolumns on masonry wall are effective and the walls with coretiecolumns have good deformation capacity as those with castinplace tiecolumns.