Response estimation for high-rise base-isolated buildings with active structural control along wind direction

Abstract

The number of passive-base-isolation (PBI) structures increased rapidly in Japan after the Great Hanshin earthquake of 1995. In recent years, PBIs has also been installed in high-rise buildings, and the combination of a PBI and active structural control (ASC) has been employed in many buildings globally to improve control performance. However, conventional approaches need numerical simulations to calculate the maximum response, thereby making complicate the design of control systems that satisfy design limitations. This paper presents a new method that theoretically estimates the mean control force and mean displacement response under along-wind force using only the static equilibrium. Moreover, the gust factors for PBI buildings with ASC, which estimate the maximum displacement and control force are devised. Our method makes it possible to estimate the mean and maximum control force and the displacement of the structure without using simulation.