The efficiency of vibration reduction of Triple Friction Pendulum together with Magneto Rheological damper connected adjacent buildings under earthquake

Abstract

This paper studies the efficiency of vibration reduction of Triple Friction Pendulum (TFP) at the bottom of column combine with Magneto-Rheological (MR) damper between two structures due to ground motion in earthquake. The MR damper is modelled by springs and viscous dampers, the damping force of MR damper depends on the voltage and other typical parameters. TFP consists of 3 independent pendulums, 4 curved sliding surfaces with various friction coefficients and radii. The equation of motion is derived and solved by Newmark method in the time domain. The numerical results including displacement, acceleration and internal forces show the effectiveness of TFP combine with MR damper in structures.

Keywords

• gối trượt ma sát
• hệ cản lưu biến từ
• gia tốc nền