Earthquakes and Structures

  • 제4권4호
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  • Pages.341-363
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  • 2013
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Modified complex mode superposition design response spectrum method and parameters optimization for linear seismic base-isolation structures

  • Huang, Dong-Mei (School of Civil Engineering, Central South University) ;
  • Ren, Wei-Xin (School of Civil Engineering, Central South University) ;
  • Mao, Yun (Department of Civil Engineering, Hubei University of Technology)
  • 투고 : 2012.03.12
  • 심사 : 2012.07.11
  • 발행 : 2013.04.25
⟨ 이전 논문 다음 논문 ⟩

초록

Earthquake response calculation, parametric analysis and seismic parameter optimization of base-isolated structures are some critical issues for seismic design of base-isolated structures. To calculate the earthquake responses for such non-symmetric and non-classical damping linear systems and to implement the earthquake resistant design codes, a modified complex mode superposition design response spectrum method is put forward. Furthermore, to do parameter optimization for base-isolation structures, a graphical approach is proposed by analyzing the relationship between the base shear ratio of a seismic base-isolation floor to non-seismic base-isolation one and frequency ratio-damping ratio, as well as the relationship between the seismic base-isolation floor displacement and frequency ratio-damping ratio. In addition, the influences of mode number and site classification on the seismic base-isolation structure and corresponding optimum parameters are investigated. It is demonstrated that the modified complex mode superposition design response spectrum method is more precise and more convenient to engineering applications for utilizing the damping reduction factors and the design response spectrum, and the proposed graphical approach for parameter optimization of seismic base-isolation structures is compendious and feasible.

키워드

참고문헌

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  1. Completeness Verification of Complex Response Spectrum Method for Underdamped and Overdamped Multiple-Support Systems Regarding the Decoupled Damping as Mathematical Parameter without Physical Meaning vol.20, pp.7, 2016, https://doi.org/10.1080/13632469.2016.1138165
  2. Algorithm design of an hybrid system embedding influence of soil for dynamic vibration control vol.74, 2015, https://doi.org/10.1016/j.soildyn.2015.03.011
  3. An Efficient Approach for Seismic Analysis of Multi-Support Structures Equipped with Coupled Dampers using Spectral Moments Instead of Cross-Correlation Coefficients vol.21, pp.5, 2017, https://doi.org/10.1080/13632469.2016.1185053
  4. The effect of base isolation and tuned mass dampers on the seismic response of RC high-rise buildings considering soil-structure interaction vol.17, pp.4, 2013, https://doi.org/10.12989/eas.2019.17.4.425