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作者:

Zhang, Haizhong (Zhang, Haizhong.) | Zhang, Rui (Zhang, Rui.) | Zhao, Yan-Gang (Zhao, Yan-Gang.)

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摘要:

With the rapid development of energy-based seismic design, probabilistic seismic hazard analysis (PSHA) in terms of the input energy spectrum, EI, has become increasingly important. Generally, implementing EI-based PSHA requires a ground-motion prediction equation (GMPE) for EI. However, although a GMPE for EI can be constructed in regions with abundant earthquake data based on regression analyses, it is difficult to obtain in regions lacking strong ground-motion records. Therefore, this study proposes a new approach for performing EI-based PSHA in regions with limited earthquake data. Instead of using a GMPE for EI directly, a model of Fourier amplitude spectrum (FAS) is adopted, which can be determined using a small number of earthquake data with small-to-moderate magnitudes. Then, the EI of the ground motion is obtained from FAS based on the relationship between EI and FAS. Furthermore, to calculate the annual intensity exceedance rate within the proposed framework of adopting the FAS model, a highly efficient method, namely, the moment method, is applied. Several numerical examples indicate that the proposed approach not only is suitable for regions lacking strong ground-motion records but also performs very efficiently in calculating the annual intensity exceedance rate.

关键词:

Energy-based seismic design probabilistic seismic hazard analysis input energy spectrum moment method Fourier amplitude spectrum

作者机构:

  • [ 1 ] [Zhang, Haizhong]Yamagata Univ, Fac Agr, Ecosci, Tsuruoka, Japan
  • [ 2 ] [Zhang, Rui]Qilu Normal Univ, Sch Geog & Tourism, Jinan, Peoples R China
  • [ 3 ] [Zhao, Yan-Gang]Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn, Minist Educ, Beijing 100124, Peoples R China

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来源 :

EARTHQUAKE SPECTRA

ISSN: 8755-2930

年份: 2024

期: 4

卷: 40

页码: 2692-2711

5 . 0 0 0

JCR@2022

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