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


IASS Symposium 2016

SESSION: Seismic Analysis, Behavior & Design

The total seismic loss ratio of a power plant with equivalent pendulum tuned mass damper system

< 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: The total seismic loss ratio of a power plant with equivalent pendulum tuned mass damper system
  • Author(s): Xiaofeng Sun, Zhan Shu, Minjuan He
  • Keywords: performance-based analysis and design, pendulum-type tuned mass damper, optimal design, total loss ratio, fragility function
Abstract
The presented study implements the performance-based analysis and design methodology to assess the seismic vulnerability of a coal-fired power plant and to optimally design its equivalent pendulum-type tuned mass damper (PTMD) system such that the direct losses due to earthquake damages are minimized. A full scale numerical model of the tested specimen is developed and its vibration characteristics are validated against previous shaking table test results. In order to quantify the system level damage states of the structure, a total loss ratio (TLR) is proposed to link the component level losses with the total repair cost of the original structure. Based on the fragility functions derived for the structure when subject to near-field and far-field ground motions, the TLRs are computed for various PTMD designs. The optimal PTMD design could refer to the derived cases with the minimum TLR.

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