½éÉÜ£º This paper focuses on the investigation of a hybrid seismic isolation system with passive variable friction dampers for protection of structures against near fault earthquakes£®The seism ic isolation can be implemented by replacing the conventional columns fixed to the foundations by seismic jsolating ones£®These columns allow horizonta1 displacement betw een the superstructure and the foundations and decouple the building from the damaging earthquake motion As a result£® the forces in the structura1 elem ents decrease and damage that may be caused to the building by the earthquake significantly decreases£®However,this positive effect is achieved on account of displacements occurring in the isolating columns£®These displacements become very 1arge when the structure is subjected to fl strong earthquake£®hi this case£®impact may OCCUI¡£ between the parts ofthe isolating column yielding their dam age or collapse£®In order to 1imit the displacements in the isolating columns£¬it is proposed to add variable friction dampers£®A method for selecting the dampers¡¯properties is proposed£®It is carried out using an artificia1 ground motion record and optima1 active control algorithm£®Numerical simulation of a seven¡ª story structure shows that the proposed method allows emcient reduction in structural response and Iimits the displacements at the seismic isolating columns.....