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A vector‐valued intensity measure for near‐fault ground motions
Earthquake Engineering & Structural Dynamics, 2020SummaryNear‐fault ground motions containing high energy and large amplitude velocity pulses may cause severe damage to structures. The most widely used intensity measure (IM) is the elastic spectral acceleration at the fundamental period of the structure (Sa(T1)); however, Sa(T1) is not a sufficient IM with respect to the effects of the pulse‐like ...
Esra Zengin, Norman A. Abrahamson
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Simulation of Near Fault Ground Motion in Delhi Region
2014Ground motions in the vicinity of the source caused severe damage to structures as evidenced during the past earthquakes (Loma Prieta 1989; Kobe 1995; Chi-Chi 1999). Near fault ground motions are characterized by long period velocity pulse as reported in literature (Somerville, 2005).
Hemant Shrivastava +2 more
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Multifractal characteristic analysis of near-fault earthquake ground motions
Soil Dynamics and Earthquake Engineering, 2015Abstract This study aims to reveal the multi-scaling behavior and quantify the irregularity of near-fault earthquake ground motions from a new perspective of multifractal theory. Based on multifractal detrended fluctuation analysis, the multifractal characteristic parameters of acceleration time series for typical near-fault ground motions are ...
Dixiong Yang, Changgeng Zhang, Yunhe Liu
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Characterization of forward-directivity ground motions in the near-fault region
Soil Dynamics and Earthquake Engineering, 2004Abstract Ground motions close to a ruptured fault resulting from forward-directivity are significantly different than other ground motions. These pulse-type motions can place severe demands on structures in the near-fault region. To aid in the characterization of these special type of ground motions, a simplified parameterization is proposed based on
Jonathan D. Bray, Adrian Rodriguez-Marek
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A stochastic model and synthesis for near‐fault impulsive ground motions
Earthquake Engineering & Structural Dynamics, 2014SummaryThe orientations of ground motions are paramount when the pulse‐like motions and their unfavorable seismic responses are considered. This paper addresses the stochastic modeling and synthesizing of near‐fault impulsive ground motions with forward directivity effect taking the orientation of the strongest pulses into account. First, a statistical
Dixiong Yang, Jilei Zhou
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Fractal characterization and frequency properties of near-fault ground motions
Earthquake Engineering and Engineering Vibration, 2013This study explores the irregularity and complexity of strong earthquake ground motions from the perspective of fractal geometry, and constructs a relation with the frequency content of the ground motions. The box-counting fractal dimensions and five representative period parameters of near-fault ground motions from the Chi-Chi and Northridge ...
Dixiong Yang, Changgeng Zhang
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Simulation method of near-fault pulse-type ground motion
Acta Seismologica Sinica, 2007The two characteristics of near-fault ground motions, i.e., the forward directivity effect and permanent displacement effect, result in long period and large velocity pulse in the velocity time history and large step pulse in the displacement time history.
Yu-ji Tian, Qing-shan Yang, Ming-qi Lu
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Correlation of Near-Fault Ground Motions for Western United States
Volume 8: Seismic Engineering, 2012Design standards for safety-related nuclear facilities such as ASCE Standard 4-98 and ASCE Standard 43-05 require the correlation coefficient for two orthogonal components of ground motion for response-history analysis to be less than 0.3. The technical basis of this requirement was developed by Hadjian three decades ago using 50 pairs of recorded ...
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Seismic Assessment of Tunnels in Near Fault Ground Motion
2023Bhavesh Banjare, Swetha Veeraraghavan
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