Journal Article10.1016/J.SOILDYN.2004.05.001
Characterization of forward-directivity ground motions in the near-fault region
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TL;DR: In this article, a simplified parameterization is proposed based on a representative amplitude, pulse period, and number of significant pulses in the velocity-time history to estimate the peak ground velocity and period of the velocity pulse (Tv) of available forward-directivity motions.
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About: This article is published in Soil Dynamics and Earthquake Engineering. The article was published on 01 Dec 2004. The article focuses on the topics: Moment magnitude scale & Magnitude (mathematics).
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Citations
Examining the Effect of Structural Characteristics of Antakya Building Stock on the Damage Level After the Kahramanmaraş Earthquakes
Anıl Özdemir
TL;DR: This study examines the structural characteristics of 2790 Antakya buildings post-Kahramanmaraş earthquakes, identifying how building typologies, age, and load-bearing systems affect damage status, highlighting vulnerability and risk factors for future earthquake mitigation.
4
Simplified Performance-Based Analysis for Seismic Slope Displacements
Astorga Mejia,Marlem Lucia +1 more
- 01 Jan 2016
TL;DR: Mejia et al. as mentioned in this paper proposed a performance-based approach to estimate seismic slope displacements using the Rathje & Saygili (2009) and the Bray and Travasarou (2007) simplified Newmark sliding block models.
Quantitative Modeling of Pulse-Like Ground Motions Using Imperialist Competitive Optimization Algorithm
TL;DR: In this paper , a mathematical model and the imperialist competitive algorithm (ICA) are used to overcome the limitations of the previous studies, and an objective function is defined as the norm deviation of the time history and response spectrum of the actual record and simulated pulse.
4
Critical Characterization and Modeling of Pulse-Like Near-Field Strong Ground Motion
Izuru Takewaki,Abbas Moustafa,Kohei Fujita +2 more
- 01 Jan 2013
TL;DR: Pulse-like ground motion has been observed in near-field (also near-fault or near-source) records with directivity focusing or fling effects as mentioned in this paper, which can be characterized by the following features: (1) long period and large amplitudes, (2) high peak ground velocity (PGV)/peak ground acceleration (PGA) and peak ground displacement (PGD)/PGA ratios, (3) unusual response spectra shapes, and (4) concentration of energy in one or very few pulses.
4
Centrifuge shaking table tests on tiered reinforced soil retaining walls subjected to the excitations of near-field ground motions
Cheng Fan,Xuejun Liu,Yuting Zhang,Xiaoyu An,Huabei Liu +4 more
TL;DR: Centrifuge shaking table tests on tiered GRS walls revealed significant deformation and altered soil properties under bidirectional and pulse-like excitations, highlighting the need for seismic design considerations, particularly for reinforcement connections.
4
References
Modification of Empirical Strong Ground Motion Attenuation Relations to Include the Amplitude and Duration Effects of Rupture Directivity
TL;DR: In this article, the authors developed modifications to empirical strong ground motion attenuation relations to account for the effects of rupture directivity on strong motion amplitudes and durations, based on an empirical analysis of near-fault data.
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Empirical Response Spectral Attenuation Relations for Shallow Crustal Earthquakes
TL;DR: In this article, empirical response spectral attenuation relations for the average horizontal and vertical component for shallow earthquakes in active tectonic regions were derived using a database of 655 recordings from 58 earthquakes.
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Characterizing Crustal Earthquake Slip Models for the Prediction of Strong Ground Motion
Paul Somerville,Kojiro Irikura,Robert W. Graves,Sumio Sawada,David J. Wald,Norman A. Abrahamson,Yoshinori Iwasaki,Takao Kagawa,Nancy F. Smith,Akira Kowada +9 more
TL;DR: A large amount of work has been done in recent years to estimate the distribution of slip on the fault surface during earthquakes as mentioned in this paper, and these slip models are derived from longer period ground motions: strong-motion velocity and displacement, and teleseismic velocity seismograms.
A Mathematical Representation of Near-Fault Ground Motions
TL;DR: In this paper, a simple, yet effective, analytical model is proposed for the representation of near-field strong ground motions, which can be used to analyze empirical observations that are based on available near-source records.
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Near‐source ground motion and its effects on flexible buildings
TL;DR: In this article, the authors simulated a Mw7.0 earthquake on a blind-thrust fault and found that flexible frame and base-isolated buildings would experience severe nonlinear behavior including the possibility of collapse at some locations.