Results 291 to 300 of about 3,570,160 (355)

Parametric Study of SMA-based Friction Pendulum System for Response Control of Bridges under Near-Fault Ground Motions

Journal of earthquake engineering, 2019
This article presents a sensitivity study on shape memory alloy (SMA)-based friction pendulum bearings (FPBs) for response control of a three-span continuous isolated bridge.
Wenzhi Zheng, Hao Wang, Jian Li, Huijun Shen   +3 more
semanticscholar   +1 more source

Seismic performance quantification of buckling-restrained braced RC frame structures under near-fault ground motions

, 2020
The near-fault ground motion records with forward directivity (FS) and fling-step (FS) effects are characterized by the obvious velocity-pulses which will impose high seismic energy input to the building structures.
K. Du, Cheng Feng, Jiulin Bai, Shuangshuang Jin   +3 more
semanticscholar   +1 more source

Displacement-based seismic design of bridge bents retrofitted with various bracing devices and their seismic fragility assessment under near-fault and far-field ground motions

Soil Dynamics and Earthquake Engineering, 2019
Implementing energy dissipation braces can be an effective option for mitigating the seismic damage of double- or multi-column bridge bents. This study compares the relative effectiveness of different braces in seismically retrofitting a reinforced ...
N. Xiang, M. Alam
semanticscholar   +1 more source

Joint development in perturbed stress fields near faults

Journal of Structural Geology, 1992
Abstract Field evidence is presented for complex spatial and temporal perturbations of an otherwise systematic joint pattern around faults from well exposed faulted rock platforms. Joints propagating in perturbed stress fields will curve to follow the directions of the stress field trajectories.
K.D. Rawnsley, T. Rives, J.-P. Petti, S.R. Hencher, A.C. Lumsden   +4 more
openaire   +1 more source

SIMULATION OF NEAR-FAULT GROUND MOTIONS USING FREQUENCY-DOMAIN DISCRETIZATION

2014
In 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.
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

Ground Motion Selection in the Near-Fault Region considering Directivity-Induced Pulse Effects

Earthquake spectra, 2019
This paper focuses on the selection of ground motions for seismic response analysis in the near-fault region, where directivity effects are significant.
K. Tarbali, B. Bradley, J. Baker
semanticscholar   +1 more source

Quantifying near fault pulses using generalized Morse wavelets

Journal of Seismology, 2019
Recently, a family of analytic wavelets known as generalized Morse wavelets (GMW) has been established in the literature. This versatile wavelet family uses two parameters (γ and β) to adjust its frequency or time domain properties. By varying these two parameters, this wavelet family includes many commonly used analytic wavelets.
openaire   +1 more source

Analysis of near-fault pulse-like seismic signals through Variational Mode Decomposition technique

Engineering structures, 2019
The present work illustrates the results obtained from the application of the Variational Mode Decomposition technique for processing near-fault pulse-like seismic signals.
G. Quaranta, F. Mollaioli
semanticscholar   +1 more source