Optimal Damper Slip Force for Vibration Control Structures Incorporating Friction Device with Sway‐Rocking Motion Obtained Using Shaking Table Tests

Abstract

In this study, a series of shaking table tests were conducted using a specimen that consisted of a superstructure, incorporating a friction device and a sway-rocking mechanism under the superstructure to determine the optimal damper slip force of a passive vibration control system considering the effects of sway-rocking motion. The adopted simple friction device, composed of rubber bands and stainless steel plates, allowed the magnitude of the slip force to be easily set. The optimal slip force of the friction device, which minimizes the peak and root-mean-square response of the superstructure subjected to earthquakes, was determined from the shaking table tests. Based on the results, the optimal slip force of the friction device was found to vary according to the input level of the ground motions and the sway-rocking conditions. The obtained results suggest that the effect of sway-rocking motion should be considered in the design of passive control structures and the determination of their optimal damper slip force.

Energy response of a passive variable friction damper and numerical simulation on the control effects for high‐rise buildings

“…Various research has been conducted on passive friction devices of category (1) and their response control effects 1–15 . However, this type of friction device cannot alter the sliding force during an earthquake and thus may introduce challenges in dealing with advanced structural vibration control problems that require the friction force to vary with the device displacement.…”

“…Various research has been conducted on passive friction devices of category (1) and their response control effects. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] However, this type of friction device cannot alter the sliding force during an earthquake and thus may introduce challenges in dealing with advanced structural vibration control problems that require the friction force to vary with the device displacement. As for category (2), active and semi-active variable friction devices and control systems have been studied both experimentally and numerically.…”

Experimental Study on Influence of Temperature to Control Performance for Viscoelastic Materials Pounding Tuned Mass Damper

“…It is nearly impossible for the engineers to fully predict the excitations of structures throughout their entire service lives (Shirai et al, 2019;Cai et al, 2020). Overdesigning the structure against all possible disturbances is often impractical and prohibitively expensive (Li et al, 2007;Ou et al, 2007;Zhang and Ou, 2008).…”