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IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century


IASS Symposium 2016

SESSION: Seismic Analysis, Behavior & Design

Formulation of release conditions for TMDs with initial displacement and its application to an arch model

< Table of Contents for Seismic Analysis, Behavior & Design
  • Proceedings Name: IASS 2016 Tokyo Symposium: Spatial Structures in the 21st Century
  • ISSN: (Electronic Version) 2518-6582
  • Session: Seismic Analysis, Behavior & Design
  • Pages: 10
  • Title: Formulation of release conditions for TMDs with initial displacement and its application to an arch model
  • Author(s): Susumu Yoshinaka, Riki Yoshida, Yoshiya Taniguchi
  • Keywords: earthquake design, vibration control, tuned mass damper, initial displacement, arch model
Abstract
TMDs show high control performance for harmonic responses, but have limited capacity under transient responses. To control transient responses effectively, we propose a TMD with initial displacement. In our previous study, we proposed design formulas for impulse loading. These formulas are based on the principle that under restricted structural initial conditions giving a specific TMD initial displacement, the first modal response is eliminated while the the second modal response with high modal damping is only oscillated. In this paper, we formulate an equation for initial conditions to release initial TMD displacement, and show that by dividing one TMD into multiple TMDs with different natural frequencies, the restricted initial conditions to release a TMD can be altered. Then, to confirm the applicability of the proposed method to spatial structures, we study the control effect of TMDs with initial displacement attached to an arch model.

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