What question did this study set out to answer?

This study aims to address inconsistencies in spectral acceleration caused by combining deterministic low-frequency and stochastic high-frequency simulations.

July 28, 2026Earthquake Engineering & Structural Dynamics

Towards Phase Consistent Hybrid Broadband Ground Motion Simulations: A Disentangling Formulation of Spectral Acceleration Accounting for the Contributions of Fourier Phase and Amplitude Spectra

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Authors

ZXZhinan Xie TZTianyu Zhou SWS Q Wang

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Overview

Randomized trial investigates a new method to enhance phase consistency in ground motion simulations, suggesting improved structural analyses.

Key Points

This study aims to address inconsistencies in spectral acceleration caused by combining deterministic low-frequency and stochastic high-frequency simulations.
Developed a disentangling formulation of spectral acceleration that incorporates Fourier phase and amplitude contributions.
Validated the formulation against NGA-West2 and KiK-net databases.
Proposed a new hybrid simulation method using deterministic long-period and stochastic short-period approaches.
Validation demonstrates the robustness of the disentangling formulation for spectral acceleration.
Reconstruction of short-period spectral acceleration using high-frequency simulated amplitudes with low-frequency phases ensures phase consistency.
The proposed method successfully simulates ground motion for the Noto earthquake.

Cite This Study

Xie et al. (2026) studied this question.

synapsesocial.com/papers/6a685d012845b684d16f084a https://doi.org/10.1002/eqe.70261

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July 28, 2026Earthquake Engineering & Structural Dynamics

Towards Phase Consistent Hybrid Broadband Ground Motion Simulations: A Disentangling Formulation of Spectral Acceleration Accounting for the Contributions of Fourier Phase and Amplitude Spectra

View Full Paper

Ask AI

Bookmark

Authors

ZXZhinan Xie TZTianyu Zhou SWS Q Wang

Discussion

Member takes

Overview

Randomized trial investigates a new method to enhance phase consistency in ground motion simulations, suggesting improved structural analyses.

Key Points

This study aims to address inconsistencies in spectral acceleration caused by combining deterministic low-frequency and stochastic high-frequency simulations.
Developed a disentangling formulation of spectral acceleration that incorporates Fourier phase and amplitude contributions.
Validated the formulation against NGA-West2 and KiK-net databases.
Proposed a new hybrid simulation method using deterministic long-period and stochastic short-period approaches.
Validation demonstrates the robustness of the disentangling formulation for spectral acceleration.
Reconstruction of short-period spectral acceleration using high-frequency simulated amplitudes with low-frequency phases ensures phase consistency.
The proposed method successfully simulates ground motion for the Noto earthquake.

Cite This Study

Xie et al. (2026) studied this question.

synapsesocial.com/papers/6a685d012845b684d16f084a https://doi.org/10.1002/eqe.70261

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