Results 251 to 260 of about 5,195 (300)

A vector‐valued intensity measure for near‐fault ground motions

Earthquake Engineering and Structural Dynamics, 2020
SummaryNear‐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
exaly   +2 more sources

Multifractal characteristic analysis of near-fault earthquake ground motions

Soil Dynamics and Earthquake Engineering, 2015
Abstract 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
exaly   +2 more sources

Effects of near-fault pulse-like ground motions on seismically isolated buildings

Journal of Building Engineering, 2022
Forward-directivity effects create distinct velocity pulse in the fault-normal direction of near-fault ground motions. It has been shown that this pulse period governs the structural response of fixed base buildings.
Necmettin Günes
exaly   +2 more sources

Spatial distribution of near-fault ground motion

Acta Seismologica Sinica, 2004
Near-fault strong ground motion of strike-slip and dip-slip of vertical and inclined rectangular fault in half-space and layered half-space is analyzed by dislocation source model. The Fourier spectra ratio of ground motion is adopted to study the characteristics of near-fault ground motion.
Liu Qi-fang, Yuan Yi-fan, Jin Xing
openaire   +1 more source

Shear Plastic Constitutive Behavior for Near-Fault Ground Motion

Journal of Engineering Mechanics, 2017
AbstractThe analysis of structures subjected to earthquake actions can be carried out by means of several methods with different levels of accuracy, among which the nonlinear dynamics is generally ...
CENNAMO, Claudia, Gesualdo, A., MONACO, Michelina   +2 more
openaire   +2 more sources

Multi-pulse characteristics of near-fault ground motions

Soil Dynamics and Earthquake Engineering, 2020
Abstract 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
openaire   +1 more source

The Vertical and Horizontal Spectra of Near-Fault Ground Motions

Applied Mechanics and Materials, 2012
Based 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
openaire   +1 more source

Near-Fault Ground Motion Effects on Simple Structures

Journal of Structural Engineering, 2001
Ground 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, Daniel V. Morrow, Charles W. Roeder   +2 more
openaire   +1 more source

Dominant pulse simulation of near fault ground motions

Earthquake Engineering and Engineering Vibration, 2013
In 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, M. K. Sharbatdar, G. Ghodrati Amiri, H. Naderpour, A. Kheyroddin   +4 more
openaire   +1 more source

Representation of near-fault pulse-type ground motions

Earthquake Engineering and Engineering Vibration, 2005
Near-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, Longjun Xu, Rodriguez-Marek Adrian   +2 more
openaire   +1 more source