Study of Risk-Based Design Methodology to TMD for Industrial Plants

Abstract

Suppressing earthquake damage to tall structures such as distillation columns in chemical plants, Tuned Mass Damper (TMD) is added to control the vibration of the structures. In order to design parameters of TMD efficiently, this paper propose a risk-based design method to determine parameters and installation position of TMD. Specifically, based on the probability of earthquake occurrence by the seismic hazard curve at the location of the structure, the seismic response analysis and fragility curve indicating the probability of damage to the target structure are calculated. From these results, the mean annual frequency of exceeding a certain damage state of the target structure for each parameter of TMD is calculated. comparing the damping performance and the cost of the equipment, risk-based design method is helpful when considering the adaptation of the equipment.