Results 301 to 310 of about 187,410 (322)
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Near-fault fling-step ground motions: Characteristics and simulation
Soil Dynamics and Earthquake Engineering, 2017Abstract The presence of long-period pulses in the near-fault pulse-type ground motions increases the damage potential of such ground motions, particularly for the flexible structures like bridges. It is necessary to carry out nonlinear analyses of structural systems for ensuring their safety in the near-source regions.
Kshitij K. Yadav, Vinay K. Gupta
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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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Automated parameterization of velocity pulses in near‐fault ground motions
Earthquake Engineering & Structural Dynamics, 2023AbstractProper parameterization of near‐fault ground motions is of critical importance in earthquake engineering, and this process is traditionally performed by directly fitting an analytical pulse model to the original motion. Yet such a process is usually limited by the trial‐and‐error procedure, which is strongly dependent on the initial guesses and
Zhiwang Chang +2 more
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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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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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Residual slip of sliding blocks induced by near‐fault ground motions
Earthquake Engineering & Structural Dynamics, 2016SummaryThe response of a rigid block supported on a horizontally moving foundation through a dry‐friction contact is investigated to near‐fault ground motions. Such motions can be thought of as consisting of a coherent component (‘pulse’) and an incoherent component, which can be described as a band‐limited ‘random noise’.
Meza Fajardo, Kristel Carolina +1 more
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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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Near-Fault Ground Motion Effects on Reinforced Concrete Bridge Columns
Journal of Structural Engineering, 2007Characteristics of near-fault ground motions warrant special consideration due to their severe and impulsive effects on structures. These characteristics are unique compared to far-field ground motions, upon which nearly all seismic design criteria are based.
Vu Phan +3 more
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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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Estimating Permanent Ground Displacement from Near-Fault Strong-Motion Accelerograms
Bulletin of the Seismological Society of America, 2007This study presents a three-phase algorithm that uses the discrete wavelet transform (dwt) to make the baseline correction to near-fault ground-motion accelerogram and to estimate permanent ground displacement. The developed algorithm is applied to the near-fault ground-motion data collected from the 1999 Chi- Chi, Taiwan, earthquake.
S.-M. Chen, C.-H. Loh
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