Optimal stiffness distribution of mid-storeyisolated buildings considering storey drift and floor acceleration response

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper formulates a response prediction formula based on complex modal superposition and frequency response functions of single-degree-of-freedom systems for both storey drift and floor acceleration of a mid-storey-isolated building under the assumption of white noise input. This study verifies that the proposed formula can estimate the seismic response of a building accurately, even if a system includes the overdamped mode, by comparing the same with the results of a time-history analysis. To support the structural design of a midstorey-isolated building, the proposed formula is applied to an optimal design problem, which considers the objective function of acceleration response in a superstructure and constraints on storey drifts. A genetic algorithm is employed to obtain the optimal stiffness distribution and damping coefficient of the isolation layer. This study confirms that the acceleration response of the optimal design is successfully reduced, with other responses remaining within acceptable ranges.

Original languageEnglish
Title of host publicationEarthquake Resistant Engineering Structures IX
Pages191-202
Number of pages12
DOIs
Publication statusPublished - 2013 Nov 22
Event9th World Conference on Earthquake Resistant Engineering Structures, ERES 2013 - A Coruna, Spain
Duration: 2013 Jul 82013 Jul 10

Publication series

NameWIT Transactions on the Built Environment
Volume132
ISSN (Print)1743-3509

Other

Other9th World Conference on Earthquake Resistant Engineering Structures, ERES 2013
CountrySpain
CityA Coruna
Period13/7/813/7/10

Keywords

  • Complex complete quadratic combination method
  • Floor acceleration response
  • Mid-storey-isolated buildings
  • Overdamped vibration
  • Performance-based design

ASJC Scopus subject areas

  • Architecture
  • Civil and Structural Engineering
  • Building and Construction
  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Arts and Humanities (miscellaneous)
  • Transportation
  • Safety Research
  • Computer Science Applications

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  • Cite this

    Kohiyama, M., & Takano, K. (2013). Optimal stiffness distribution of mid-storeyisolated buildings considering storey drift and floor acceleration response. In Earthquake Resistant Engineering Structures IX (pp. 191-202). (WIT Transactions on the Built Environment; Vol. 132). https://doi.org/10.2495/ERES130161