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 publicationWIT Transactions on the Built Environment
Pages191-202
Number of pages12
Volume132
DOIs
Publication statusPublished - 2013
Event9th World Conference on Earthquake Resistant Engineering Structures, ERES 2013 - A Coruna, Spain
Duration: 2013 Jul 82013 Jul 10

Other

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

Fingerprint

Stiffness
Seismic response
White noise
Structural design
Frequency response
Damping
Genetic algorithms
Optimal design

Keywords

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

ASJC Scopus subject areas

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

Cite this

Optimal stiffness distribution of mid-storeyisolated buildings considering storey drift and floor acceleration response. / Kohiyama, Masayuki; Takano, Ken'ichi.

WIT Transactions on the Built Environment. Vol. 132 2013. p. 191-202.

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

Kohiyama, M & Takano, K 2013, Optimal stiffness distribution of mid-storeyisolated buildings considering storey drift and floor acceleration response. in WIT Transactions on the Built Environment. vol. 132, pp. 191-202, 9th World Conference on Earthquake Resistant Engineering Structures, ERES 2013, A Coruna, Spain, 13/7/8. https://doi.org/10.2495/ERES130161
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