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Multi-pulse characteristics of near-fault ground motions
Soil Dynamics and Earthquake Engineering, 2020Abstract Multi-pulse characteristics of near-fault ground motions, such as the number of inherent pulses, pulse periods, and amplitudes, have notable influences on the response of structures. To investigate these important parameters, an automatic detection procedure, which is conducted on the rough pulse signal that is extracted by the HHT method ...
Xiaoyu Chen, Dongsheng Wang
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The Vertical and Horizontal Spectra of Near-Fault Ground Motions
Applied Mechanics and Materials, 2012Based on the horizontal and vertical components of a set of 30 acceleration records obtained from 10 near-fault earthquakes, the horizontal and the vertical response spectra are established, and have been compared with each other in this study. Statistical analyses show that, for the selected 30 acceleration records, the maximum mean of vertical ...
Jiang Yin, Xian Yan Zhou, Guo Jing He
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Near-Fault Ground Motion Effects on Simple Structures
Journal of Structural Engineering, 2001Ground motion records obtained from sites at known locations relative to earthquake faults were used to study near-fault (NF) ground shaking effects on the inelastic response of simple structures. The structures were idealized as single-degree-of-freedom oscillators with periods ranging from 0.05 to 3.0 s, a damping ratio of 2%, and target ductilities ...
Gregory A. MacRae +2 more
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Dominant pulse simulation of near fault ground motions
Earthquake Engineering and Engineering Vibration, 2013In this study, a new mathematical model is developed composed of two parts, including harmonic and polynomial expressions for simulating the dominant velocity pulse of near fault ground motions. Based on a proposed velocity function, the corresponding expressions for the ground acceleration and displacement time histories are also derived. The proposed
S. R. Hoseini Vaez +4 more
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Representation of near-fault pulse-type ground motions
Earthquake Engineering and Engineering Vibration, 2005Near-fault ground motions with long-period pulses have been identified as critical in the design of structures. To aid in the representation of this special type of motion, eight simple pulses that characterize the effects of either the fling-step or forward-directivity are considered.
Lili Xie +2 more
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A Mathematical Representation of Near-Fault Ground Motions
Bulletin of the Seismological Society of America, 2003A simple, yet effective, analytical model is proposed for the representation of near-field strong ground motions. The model adequately describes the impulsive character of near-fault ground motions both qualitatively and quantitatively. In addition, it can be used to analytically reproduce empirical observations that are based on available near-source ...
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SIMULATION OF NEAR-FAULT GROUND MOTIONS USING FREQUENCY-DOMAIN DISCRETIZATION
2014In 2008, S. Rezaeian and A. Der Kiureghian introduced a new fully nonstationary stochastic model for strong earthquake ground motions. The model employs a parameterized stochastic model, which is based on a modulated Gaussian white noise. In 2010, the same authors used this work as a base for developing a new method for generating a family of synthetic
Broccardo M., Der Kiureghian A.
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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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Damping coefficients for near-fault ground motion response spectra
Soil Dynamics and Earthquake Engineering, 2011Abstract Damping coefficients are frequently used in earthquake engineering as a simple way to adjust the pseudo-acceleration or displacement response spectra associated with a viscous damping ratio of 5% to the higher values of viscous damping needed for design of structures equipped with base isolation and/or supplemental energy dissipation devices.
Derek T. Hubbard, George P. Mavroeidis
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Characteristics of near-fault ground motion containing velocity pulses
Acta Seismologica Sinica, 2006There are many reports about the research on near-fault velocity pulses, which focus on the generation of velocity pulse and simplify the velocity pulse so as to be used in the seismic design of structure. However few researches have put emphasis on the characteristics of near-fault ground motions containing velocity pulses, especially the ...
Tao Wei, Feng-xin Zhao, Yu-shan Zhang
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