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When analyzing a single line-to-ground fault from phase A to ground at a three-phase bus, it is important to consider the fault impedance. This impedance is zero for a bolted fault, equal to the arc impedance for an arcing fault, and represents the total fault impedance for a transmission-line insulator flashover. To derive sequence and phase currents, fault conditions are translated from the phase domain to the sequence domain.
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Updated: Dec 12, 2025

Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
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A Multi Record Based Artificial Near Fault Ground Motion Generation Method.

Zhen Liu1, Shibo Zhang1, Zhe Zhang2

  • 1School of Management Science and Engineering, Shandong technology and business University, Yantai 264005 China.

Methodsx
|August 11, 2020
PubMed
Summary
This summary is machine-generated.

Generating realistic near-fault ground motions is challenging. This new method uses multiple seismic records to simulate near-fault ground motions, improving accuracy and addressing data limitations.

Keywords:
ArtificialChi-Chi earthquakeNear-faultVelocity pulseWaveletground motion

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Area of Science:

  • Earthquake Engineering
  • Seismology
  • Computational Mechanics

Background:

  • Near-fault ground motions are highly damaging and difficult to simulate accurately due to their complex temporal variations.
  • Using single ground motion records for simulation can lead to significant errors.

Purpose of the Study:

  • To present a novel method for generating near-fault ground motions using a set of actual seismic records.
  • To improve the simulation accuracy and efficiency of near-fault ground motions.

Main Methods:

  • A group of near-fault ground motions from the same earthquake with similar site characteristics were used as samples.
  • The method incorporates multi-ground motion samples to account for variability while preserving earthquake characteristics.
  • Wavelet technique and random vibration theory were applied for analysis and simulation.

Main Results:

  • Artificial near-fault ground motions were generated and validated against natural ground motions using finite element analysis.
  • The generated ground motions demonstrated good simulation accuracy, closely matching actual seismic events.
  • The approach effectively addresses the scarcity of near-fault ground motion data.

Conclusions:

  • The proposed method provides a robust approach for generating realistic near-fault ground motions.
  • This technique enhances the reliability of structural response analysis under seismic loading.
  • The integration of wavelet transform and random vibration theory significantly improves simulation performance.